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Li X, Wang D, Li R, Yang F, Zhu R. Crigler Najjar syndrome type II with severe jaundice as a new subtype(?) : A rare case report. Clin Res Hepatol Gastroenterol 2024; 48:102395. [PMID: 38852845 DOI: 10.1016/j.clinre.2024.102395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/11/2024]
Affiliation(s)
- Xinqi Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Dechun Wang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ruobing Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Fumei Yang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Rong Zhu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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Okumura K, Dhand A, Misawa R, Sogawa H, Veillette G, Nishida S. Potential Association of Blood Transfusion in Deceased Donors With Outcomes of Liver Transplantation in the United States. J Surg Res 2024; 300:477-484. [PMID: 38875946 DOI: 10.1016/j.jss.2024.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Donor blood transfusion may potentially affect transplant outcomes through an inflammatory response, recipient sensitization, or transmission of infection. The aim of this study was to evaluate the association of donor blood transfusion with outcomes of liver transplantation (LT). METHODS From January 2004 to December 2022, donor blood transfusion information was available for 113,017 adult recipients of LT in the United Network for Organ Sharing database and was classified into 4 levels of transfusion: no-transfusion (N = 68,130), transfusion of 1-5 units (N = 33,629), 6-10 units (N = 8067), and >10 units (N = 5329). Recipient survival analysis was performed by Kaplan-Meier method and multivariable Cox-hazard model. RESULTS Among this cohort, 40.8% of donors (N = 46,261) received blood transfusion during the index hospitalization. Compared to no-blood transfusion donors, blood transfusion donors were younger (median age 37 versus 46 y P < 0.001) and were more brain death donors (94.5% versus 92.1%, P < 0.001). An increased risk of rejection at 6-mo (transfusion 10.3% versus no-transfusion 9.9%, P = 0.055) and 1 y (transfusion 12.5% versus no-transfusion 11.9%, P = 0.0036) post-LT was noted in this cohort. Multivariable Cox-hazard model showed blood transfusion was associated with increased 1-y mortality (transfusion 1.07; 95% CI 1.02-1.12, P = 0.007) and graft failure (transfusion 1.09; 95% CI 1.04-1.13, P < 0.001). CONCLUSIONS Donor blood transfusion was associated with an increased risk of rejection at 6 mo and 1 y among LT recipients and worse post-transplant graft and overall survival. Additional information regarding donor blood transfusion, along with other known factors, may be considered when deciding the optimization of overall immune suppression in LT recipients to decrease the risk of delayed rejection.
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Affiliation(s)
- Kenji Okumura
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York.
| | - Abhay Dhand
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York
| | - Ryosuke Misawa
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York
| | - Hiroshi Sogawa
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York
| | - Gregory Veillette
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York
| | - Seigo Nishida
- Department of Surgery, Westchester Medical Center and New York Medical College, Valhalla, New York
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Mobaraki S, Nissen PH, Donskov F, Wozniak A, Van Herck Y, Coosemans L, van Nieuwenhuyse T, Lambrechts D, Bechter O, Baldewijns M, Roussel E, Laenen A, Beuselinck B. Cabozantinib Induces Isolated Hyperbilirubinemia in Renal Cell Carcinoma Patients carrying the UGT1A1*28 Polymorphism. Clin Genitourin Cancer 2024:102180. [PMID: 39155162 DOI: 10.1016/j.clgc.2024.102180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Accepted: 07/24/2024] [Indexed: 08/20/2024]
Abstract
BACKGROUND Genetic variants of UGT1A1, involved in glucuronidation and clearance of bilirubin, are associated with reduced bilirubin metabolization and drug-induced isolated hyperbilirubinemia. We studied the impact of the UGT1A1*28 polymorphism on drug-induced isolated hyperbilirubinemia in metastatic renal cell carcinoma patients treated with pazopanib, cabozantinib, and axitinib. METHODS We genotyped the UGT1A1*28 TA6/TA6-TA6/TA7-TA7/TA7 polymorphism and correlated with median baseline, on-treatment and peak bilirubin levels during therapy, incidence of grade-1- or -2 (G1/2)-hyperbilirubinemia and time-to-G1-hyperbilirubinemia. RESULTS Of the 66 patients treated with pazopanib, 29 received axitinib and 28 cabozantinib upon progression. Median baseline bilirubin was higher in TA7/TA7-carriers versus TA6/TA6+TA6/TA7-carriers at start of pazopanib (P < .0001), cabozantinib (P < .0001), and axitinib (P = .007). During pazopanib therapy, median bilirubin increased 1.4-fold in TA7/TA7+TA6/TA7-carriers but not in TA6/TA6-carriers. On cabozantinib, bilirubin increased 1.5-fold in TA7/TA7-carriers but not in TA6/TA6+TA6/TA7-carriers. Axitinib did not increase bilirubin in any genotype. Peak bilirubin in TA7/TA7- versus TA6/TA6+TA6/TA7-carriers was higher on pazopanib (P < .0001) or cabozantinib (P < .0001). With pazopanib, G1-hyperbilirubinemia occurred in 57% of TA7/TA7- and 12% of TA6/TA6+TA6/TA7-carriers (P = .0009) and G2-hyperbilirubinemia in 36% and 6% of the patients, respectively (P = .004). On cabozantinib, G1-hyperbilirubinemia occurred in 100% of TA7/TA7- and 5% of TA6/TA6+TA6/TA7-carriers (P < .0001) and G2-hyperbilirubinemia in 33% and 0% of the patients, respectively (P = .04). On axitinib, no correlation between the genotypes and G1/2-hyperbilirubinemia was observed. CONCLUSION We validate the previously described impact of the UGT1A1*28 polymorphism on isolated bilirubin increase on pazopanib. We report for the first time that cabozantinib also interferes with UGT1A1 and causes isolated bilirubin increase.
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Affiliation(s)
- Sajedeh Mobaraki
- Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium
| | - Peter Henrik Nissen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Frede Donskov
- Department of Oncology, University Hospital of Southern Denmark, Esbjerg, Denmark
| | | | - Yannick Van Herck
- Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium
| | - Lina Coosemans
- Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium
| | | | - Diether Lambrechts
- Laboratory for Translational Genetics, Department of Human Genetics, VIB Center for Cancer Biology, KU Leuven, Leuven, Belgium
| | - Oliver Bechter
- Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium
| | | | - Eduard Roussel
- Department of Urology, University Hospitals Leuven, Leuven, Belgium
| | | | - Benoit Beuselinck
- Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium.
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Xu S, Lan H, Huang C, Ge X, Zhu J. Mechanisms and emerging strategies for irinotecan-induced diarrhea. Eur J Pharmacol 2024; 974:176614. [PMID: 38677535 DOI: 10.1016/j.ejphar.2024.176614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Irinotecan (also known as CPT-11) is a topoisomerase I inhibitor first approved for clinical use as an anticancer agent in 1996. Over the past more than two decades, it has been widely used for combination regimens to treat various malignancies, especially in gastrointestinal and lung cancers. However, severe dose-limiting toxicities, especially gastrointestinal toxicity such as late-onset diarrhea, were frequently observed in irinotecan-based therapy, thus largely limiting the clinical application of this agent. Current knowledge regarding the pathogenesis of irinotecan-induced diarrhea is characterized by the complicated metabolism of irinotecan to its active metabolite SN-38 and inactive metabolite SN-38G. A series of enzymes and transporters were involved in these metabolic processes, including UGT1A1 and CYP3A4. Genetic polymorphisms of these metabolizing enzymes were significantly associated with the occurrence of irinotecan-induced diarrhea. Recent discoveries and progress made on the detailed mechanisms enable the identification of potential biomarkers for predicting diarrhea and as such guiding the proper patient selection with a better range of tolerant dosages. In this review, we introduce the metabolic process of irinotecan and describe the pathogenic mechanisms underlying irinotecan-induced diarrhea. Based on the mechanisms, we further outline the potential biomarkers for predicting the severity of diarrhea. Finally, based on the current experimental evidence in preclinical and clinical studies, we discuss and prospect the current and emerging strategies for the prevention of irinotecan-induced diarrhea.
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Affiliation(s)
- Shengkun Xu
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China; Zhejiang Key Laboratory of Radiation Oncology, Hangzhou, Zhejiang 310022, China
| | - Huiyin Lan
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China; Zhejiang Key Laboratory of Radiation Oncology, Hangzhou, Zhejiang 310022, China
| | - Chengyi Huang
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China; Zhejiang Key Laboratory of Radiation Oncology, Hangzhou, Zhejiang 310022, China
| | - Xingnan Ge
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China; Zhejiang Key Laboratory of Radiation Oncology, Hangzhou, Zhejiang 310022, China
| | - Ji Zhu
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China; Zhejiang Key Laboratory of Radiation Oncology, Hangzhou, Zhejiang 310022, China.
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Ferrer Bolufer I, Galiana Vallés X, Izquierdo Álvarez S, Serrano Mira A, Guzmán Luján C, Safont Aguilera MJ, González Tarancón R, Bolaños Naranjo M, Carrasco Salas P, Santamaría González M, Rodríguez-López R. Diversity of oncopharmacogenetic profile within Spanish population. Pharmacogenet Genomics 2024; 34:166-169. [PMID: 38488402 DOI: 10.1097/fpc.0000000000000530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Consensus guidelines for genotype-guided fluoropyrimidine dosing based on variation in the dihydropyrimidine dehydrogenase (DPYD) gene before treatment have been firmly established. The prior pharmacogenetic report avoids the serious toxicity that inevitably occurred in a non-negligible percentage of the treated patients. The precise description of the allelic distribution of the variants of interest in our reference populations is information of great interest for the management of the prescription of these antineoplastic drugs. We characterized the allelic distribution of the UGT1A1*28 variant (rs3064744), as well as the DPYD*2A (rs3918290) variant, c.1679T>G (rs55886062), c.2846A>T (rs67376798) and c.1129-5923C>G (rs75017182; HapB3) in series of 5251 patients who are going to receive treatment with irinotecan and fluoropyrimidines, representative of Valencian, Aragonese and Western Andalusian populations.
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Affiliation(s)
- Irene Ferrer Bolufer
- Genetics Laboratory, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia
| | - Ximo Galiana Vallés
- Genetics Laboratory, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia
| | | | - Ana Serrano Mira
- Human Genetics Unit, Clinical Analysis Service, Juan Ramón Jiménez Hospital, Huelva
| | - Carola Guzmán Luján
- Genetics Laboratory, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia
| | | | | | | | - Pilar Carrasco Salas
- Human Genetics Unit, Clinical Analysis Service, Juan Ramón Jiménez Hospital, Huelva
- Genetics Commission, Spanish Society of Laboratory Medicine, Barcelona, Spain
| | - María Santamaría González
- Genetics Laboratory, Clinical Biochemistry Service, Miguel Servet University Hospital, Zaragoza
- Genetics Commission, Spanish Society of Laboratory Medicine, Barcelona, Spain
| | - Raquel Rodríguez-López
- Genetics Laboratory, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia
- Genetics Commission, Spanish Society of Laboratory Medicine, Barcelona, Spain
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Fujita K, Taguchi D, Fukuda K, Yoshida T, Shimazu K, Shinozaki H, Shibata H, Miura M. Association between albumin-bilirubin grade and plasma trough concentrations of regorafenib and its metabolites M-2 and M-5 at steady-state in Japanese patients. Invest New Drugs 2024; 42:252-260. [PMID: 38517650 PMCID: PMC11164767 DOI: 10.1007/s10637-024-01429-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/08/2024] [Indexed: 03/24/2024]
Abstract
The aim of the present study was to determine whether the trough plasma concentrations (C0) of regorafenib and its metabolites, the N-oxide metabolite (M-2) and the desmethyl N-oxide metabolite (M-5), in 21 patients receiving regorafenib therapy were affected by albumin-bilirubin (ALBI) grade. Regorafenib was administered at dosages ranging from 40 to 160 mg once daily on a 3-week-on, 1-week-off cycle. C0 values of regorafenib and its major metabolites were measured by high-performance liquid chromatography on day 8 after treatment initiation. The C0 values of regorafenib and metabolites M-2 and M-5 were significantly lower in patients with ALBI grade 2 as compared with grade 1 (P = 0.023, 0.003 and 0.017, respectively). The total C0 of regorafenib and its metabolites was significantly higher in ALBI grade 1 patients relative to grade 2 (3.489 μg/mL vs. 1.48 μg/mL; P = 0.009). The median relative dose intensity (RDI) of patients categorized as ALBI grade 2 was significantly lower than that of grade 1 patients (21.9% vs. 62.9%; P = 0.006). In 15 colorectal cancer patients among the total 21 patients, patients with ALBI grade 2 (n = 9) had a significantly shorter median overall survival time than patients with grade 1 (n = 6; P = 0.013). Administering a low dose of regorafenib to patients with ALBI grade 2 reduces the RDI of regorafenib and lowers treatment efficacy, as an appropriate C0 of regorafenib is not maintained. Monitoring the C0 of regorafenib regularly is necessary to guide dose adjustment.
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Affiliation(s)
- Kazuma Fujita
- Department of Pharmacy, Akita University Hospital, Akita, Japan
| | - Daiki Taguchi
- Department of Clinical Oncology, Akita University, Akita, Japan
| | - Koji Fukuda
- Department of Clinical Oncology, Akita University, Akita, Japan
| | - Taichi Yoshida
- Department of Clinical Oncology, Akita University, Akita, Japan
| | | | - Hanae Shinozaki
- Department of Clinical Oncology, Akita University, Akita, Japan
| | | | - Masatomo Miura
- Department of Pharmacy, Akita University Hospital, Akita, Japan.
- Department of Pharmacokinetics, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
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Miranda JP, Pereira A, Corvalán C, Miquel JF, Alberti G, Gana JC, Santos JL. Genetic determinants of serum bilirubin using inferred native American gene variants in Chilean adolescents. Front Genet 2024; 15:1382103. [PMID: 38826804 PMCID: PMC11140026 DOI: 10.3389/fgene.2024.1382103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/18/2024] [Indexed: 06/04/2024] Open
Abstract
Gene variants in the UGT1A1 gene are strongly associated with circulating bilirubin levels in several populations, as well as other variants of modest effect across the genome. However, the effects of such variants are unknown regarding the Native American ancestry of the admixed Latino population. Our objective was to assess the Native American genetic determinants of serum bilirubin in Chilean admixed adolescents using the local ancestry deconvolution approach. We measured total serum bilirubin levels in 707 adolescents of the Chilean Growth and Obesity Cohort Study (GOCS) and performed high-density genotyping using the Illumina-MEGA array (>1.7 million genotypes). We constructed a local ancestry reference panel with participants from the 1000 Genomes Project, the Human Genome Diversity Project, and our GOCS cohort. Then, we inferred and isolated haplotype tracts of Native American, European, or African origin to perform genome-wide association studies. In the whole cohort, the rs887829 variant and others near UGT1A1 were the unique signals achieving genome-wide statistical significance (b = 0.30; p = 3.34 × 10-57). After applying deconvolution methods, we found that significance is also maintained in Native American (b = 0.35; p = 3.29 × 10-17) and European (b = 0.28; p = 1.14 × 10-23) ancestry components. The rs887829 variant explained a higher percentage of the variance of bilirubin in the Native American (37.6%) compared to European ancestry (28.4%). In Native American ancestry, carriers of the TT genotype of this variant averaged 4-fold higher bilirubinemia compared to the CC genotype (p = 2.82 × 10-12). We showed for the first time that UGT1A1 variants are the primary determinant of bilirubin levels in Native American ancestry, confirming its pan-ethnic relevance. Our study illustrates the general value of the local ancestry deconvolution approach to assessing isolated ancestry effects in admixed populations.
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Affiliation(s)
- José P. Miranda
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- School of Medicine, PhD in Epidemiology Program, Pontificia Universidad Católica de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile and Universidad de Chile, Santiago, Chile
| | - Ana Pereira
- Instituto de Nutrición y Tecnología de los Alimentos INTA, Universidad de Chile, Santiago, Chile
| | - Camila Corvalán
- Instituto de Nutrición y Tecnología de los Alimentos INTA, Universidad de Chile, Santiago, Chile
| | - Juan F. Miquel
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gigliola Alberti
- Pediatrics Division, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Gastroenterology and Pediatric Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan C. Gana
- Pediatrics Division, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Gastroenterology and Pediatric Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José L. Santos
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- School of Medicine, PhD in Epidemiology Program, Pontificia Universidad Católica de Chile, Santiago, Chile
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He T, Geng X, Zhu L, Lin X, Wang L. Type II Crigler-Najjar syndrome: a case report and literature review. Front Med (Lausanne) 2024; 11:1354514. [PMID: 38784231 PMCID: PMC11112071 DOI: 10.3389/fmed.2024.1354514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/16/2024] [Indexed: 05/25/2024] Open
Abstract
Background Crigler-Najjar syndrome (CNS) is caused by mutations in uridine 5'-diphosphate glucuronyltransferase (UGT1A1) resulting in enzyme deficiency and hyperbilirubinemia. Type II CNS patients could respond to phenobarbital treatment and survive. This study presents a rare case of type II CNS. Case summary The proband was a 29-year-old male patient admitted with severe jaundice. A hepatic biopsy showed bullous steatosis of the peri-central veins of the hepatic lobule, sediment of bile pigment, and mild periportal inflammation with normal liver plate structure. The type II CNS was diagnosed by routine genomic sequencing which found that the proband with the Gry71Arg/Tyr486Asp compound heterozygous mutations in the UGT1A1 gene. After treatment with phenobarbital (180 mg/day), his bilirubin levels fluctuated between 100 and 200 μmol/L for 6 months and without severe icterus. Conclusion Type II CNS could be diagnosed by routine gene sequencing and treated by phenobarbital.
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Affiliation(s)
| | | | - Lei Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | | | - Lixia Wang
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
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Wang C, Li M, Liu Z, Guo Y, Liu H, Zhao P. Genetic evaluation in indeterminate acute liver failure: A post hoc analysis. Arab J Gastroenterol 2024; 25:125-128. [PMID: 38705812 DOI: 10.1016/j.ajg.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 01/28/2024] [Accepted: 03/20/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND AND STUDY AIMS There are limited data regarding indeterminate acute liver failure (ALF). The study aims to perform a post hoc analysis using genetic methods for the ALF cases with indeterminate etiology. PATIENTS AND METHODS Stored blood samples from these patients with indeterminate ALF were collected. Whole-exome sequencing (WES) was used to evaluate the pathogenesis of indeterminate ALF. RESULTS A total of 16 samples from 11 adult patients and 5 pediatric patients with indeterminate ALF were available. Among the adult patients, one female patient was identified with two heterozygous variants (c.2333G > T (p.Arg778Leu) and c.2310C > G (p.Leu770 = )) in the adenosine triphosphatase copper-transporting beta (ATP7B) gene, and two male patients were found to harbor heterozygous and homozygous variants (c.686C > A (p.Pro229Gln) plus homozygousvariantA(TA)6TAAinsTA (-), andc.1456 T > G (p.Tyr486Asp) plus c.211G > A (p.Gly71Arg)) in the uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) gene. For the pediatric patients, single heterozygous variant (c.2890C > T (p.Arg964Cys)) in the polymerase gamma (POLG) gene was found in 1 male child, and two heterozygous variants (c.1909A > G (p.Lys637Glu) and c.3646G > A (p.Val1216Ile)) in the tetratricopeptide repeat domain 37 (TTC37) gene were found in 1 female child. No variants clinically associated with known liver diseases were revealed in the remaining patients. CONCLUSION These results expand the knowledge of ALF with indeterminate etiology. WES is helpful to reveal possible candidate genes for indeterminate ALF, but incomplete consistency between the genotype and phenotype in some cases still challenge the accurate diagnosis.
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Affiliation(s)
- Chunya Wang
- Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Meina Li
- Faculty of Military Health Services, Second Military Medical University, Shanghai 200433,China
| | - Zhenhua Liu
- Department of Pathology, Seventh Medical Center, Chinese PLA General Hospital, Beijing 100010, China
| | - Yupeng Guo
- College of Public Health, Mudanjiang Medical University, Mudanjiang 157011, Heilongjiang, China
| | - Huijuan Liu
- Fifth Medical Center (formerly Beijing 302 Hospital), Chinese PLA General Hospital, Beijing 100039, China
| | - Pan Zhao
- Fifth Medical Center (formerly Beijing 302 Hospital), Chinese PLA General Hospital, Beijing 100039, China.
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Wei S, Li X, Wu H, Zhang Q, Wu Y, Zhao Z, Mei S, Feng W. UGT1A polymorphism rs4148324 associated with topiramate plasma concentration to dose ratio in children with epilepsy. Seizure 2024; 116:107-112. [PMID: 37858371 DOI: 10.1016/j.seizure.2023.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/23/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023] Open
Abstract
PURPOSE The objective of this study is to evaluate the association between genetic polymorphisms and the concentration to dose ratio of topiramate in children with epilepsy. METHODS A cohort of 163 pediatric patients with epilepsy receiving topiramate therapy were enrolled. The ultra-performance liquid chromatography-tandem mass spectrometry method was employed to measure the trough plasma concentration of topiramate at steady-state. These concentrations were normalized by dividing them by the ratio of total daily dose to body weight, yielding the concentration to dose ratio (CDR) of topiramate. MassArray system identified 30 single nucleotide polymorphisms associated with the pharmacokinetics and pharmacodynamics of topiramate. The CDR values were logarithmic transformed (lnCDR) for normal distribution. The association between the identified genetic polymorphisms and lnCDR was assessed using the PLINK software, employing linear regression analysis with adjustments by epilepsy types, estimated glomerular filtration rate, alanine aminotransferase, valproic acid, phenobarbital, and oxcarbazepine. RESULTS Variant rs4148324 (UGT1A1/3/4/5/6/7/8/9/10, BETA = 0.182, P = 0.010) was significantly associated with lnCDR of topiramate. Patients carrying the G allele exhibited higher normalized topiramate plasma concentrations. No other significant associations were found. CONCLUSIONS In pediatric patients receiving topiramate therapy, rs4148324 was associated with normalized topiramate plasma concentration. Further studies are warranted to validate and confirm the findings.
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Affiliation(s)
- Shifeng Wei
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, 119 Nansihuan West Road, Fengtai District, Beijing 100070, China; Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Xingmeng Li
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Han Wu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, 119 Nansihuan West Road, Fengtai District, Beijing 100070, China; Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Qiang Zhang
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, 119 Nansihuan West Road, Fengtai District, Beijing 100070, China; Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Yun Wu
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Zhigang Zhao
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, 119 Nansihuan West Road, Fengtai District, Beijing 100070, China; Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
| | - Shenghui Mei
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, 119 Nansihuan West Road, Fengtai District, Beijing 100070, China; Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
| | - Weixing Feng
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.
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11
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Akabane M, Bekki Y, Imaoka Y, Inaba Y, Kwong AJ, Esquivel CO, Melcher ML, Sasaki K. The short and long-term prognostic influences of liver grafts with high bilirubin levels at the time of organ recovery. Clin Transplant 2024; 38:e15155. [PMID: 37812571 DOI: 10.1111/ctr.15155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/25/2023] [Accepted: 09/17/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Donors with hyperbilirubinemia are often not utilized for liver transplantation (LT) due to concerns about potential liver dysfunction and graft survival. The potential to mitigate organ shortages using such donors remains unclear. METHODS This study analyzed adult deceased donor data from the United Network for Organ Sharing database (2002-2022). Hyperbilirubinemia was categorized as high total bilirubin (3.0-5.0 mg/dL) and very high bilirubin (≥5.0 mg/dL) in brain-dead donors. We assessed the impact of donor hyperbilirubinemia on 3-month and 3-year graft survival, comparing these outcomes to donors after circulatory death (DCD). RESULTS Of 138 622 donors, 3452 (2.5%) had high bilirubin and 1999 (1.4%) had very high bilirubin levels. Utilization rates for normal, high, and very high bilirubin groups were 73.5%, 56.4%, and 29.2%, respectively. No significant differences were found in 3-month and 3-year graft survival between groups. Donors with high bilirubin had superior 3-year graft survival compared to DCD (hazard ratio .83, p = .02). Factors associated with inferior short-term graft survival included recipient medical condition in intensive care unit (ICU) and longer cold ischemic time; factors associated with inferior long-term graft survival included older donor age, recipient medical condition in ICU, older recipient age, and longer cold ischemic time. Donors with ≥10% macrosteatosis in the very high bilirubin group were also associated with worse 3-year graft survival (p = .04). DISCUSSION The study suggests that despite many grafts with hyperbilirubinemia being non-utilized, acceptable post-LT outcomes can be achieved using donors with hyperbilirubinemia. Careful selection may increase utilization and expand the donor pool without negatively affecting graft outcome.
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Affiliation(s)
- Miho Akabane
- Division of Abdominal Transplant, Department of Surgery, Stanford University Medical Center, Stanford, California, USA
| | - Yuki Bekki
- Department of Surgery, Fukuoka City Hospital, Fukuoka, Japan
| | - Yuki Imaoka
- Division of Abdominal Transplant, Department of Surgery, Stanford University Medical Center, Stanford, California, USA
| | - Yosuke Inaba
- Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Allison J Kwong
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California, USA
| | - Carlos O Esquivel
- Division of Abdominal Transplant, Department of Surgery, Stanford University Medical Center, Stanford, California, USA
| | - Marc L Melcher
- Division of Abdominal Transplant, Department of Surgery, Stanford University Medical Center, Stanford, California, USA
| | - Kazunari Sasaki
- Division of Abdominal Transplant, Department of Surgery, Stanford University Medical Center, Stanford, California, USA
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12
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Omori H, Chikamoto J, Nagahara M, Hirata M, Otoi T. Evaluating variations in bilirubin glucuronidation activity by protease inhibitors in canine and human primary hepatocytes cultured in a 3D culture system. Toxicol In Vitro 2023; 93:105689. [PMID: 37660998 DOI: 10.1016/j.tiv.2023.105689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 07/18/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Bilirubin is excreted into the bile from hepatocytes, mainly as monoglucuronosyl and bisglucuronosyl conjugates, reflecting bilirubin glucuronidation activity. However, there is limited information on the in vitro evaluation of liver cell lines or primary hepatocytes. This study aimed to investigate variations in the bilirubin metabolic function of canine and human hepatocyte spheroids formed in a three-dimensional (3D) culture system indicated by the formation of bilirubin glucuronides when protease inhibitors such as atazanavir, indinavir, ritonavir, and nelfinavir were treated with bilirubin. The culture supernatant was collected for bilirubin glucuronidation assessment and the cells were used to evaluate viability. On day 8 of culture, both canine and human hepatocyte spheroids showed high albumin secretion and distinct spheroid formation, and their bilirubin glucuronidation activities were evaluated considering cell viability. Treatment with atazanavir and ritonavir remarkably inhibited bilirubin glucuronide formation, wherein atazanavir showed the highest inhibition, particularly in human hepatocyte spheroids. These results may reflect the effects on cellular uptake of bilirubin and its intracellular metabolic function. Thus, primary hepatocytes cultured in a 3D culture system may be a useful in vitro system for the comprehensive evaluation of bilirubin metabolic function and risk assessment in bilirubin metabolic disorders for drug development.
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Affiliation(s)
- Hisayoshi Omori
- Bio-Innovation Research Center, Tokushima University, Tokushima, Japan; Preclinical Basic Research, Taiho Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Junko Chikamoto
- Preclinical Basic Research, Taiho Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Megumi Nagahara
- Bio-Innovation Research Center, Tokushima University, Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Maki Hirata
- Bio-Innovation Research Center, Tokushima University, Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Takeshige Otoi
- Bio-Innovation Research Center, Tokushima University, Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan.
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13
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Rijal D, Rijal P, Bohare SM, Chaudhari AS, Dhungel M, Agarwal M, Bhatta P, Dhakal TR, Bishwokarma A, Kafle P. A rare case of Crigler-Najjar syndrome type 2: A case report and literature review. Clin Case Rep 2023; 11:e8176. [PMID: 38028034 PMCID: PMC10643321 DOI: 10.1002/ccr3.8176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/19/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
Key Clinical Message Crigler-Najjar syndrome type 2 should be suspected in any young patient presenting with isolated indirect hyperbilirubinemia where all other common etiologies have been excluded. It is a relatively benign condition that responds to phenobarbitone. Abstract Crigler-Najjar syndrome (CNS) type 2 is an inborn cause of isolated indirect hyperbilirubinemia characterized by a partial deficiency of the enzyme uridine 5'-diphosphate-glucuronosyltransferase (UGT) responsible for bilirubin conjugation. Typically, this condition is diagnosed based on clinical manifestations, supplemented by enzyme analysis if feasible, and exhibits a significant response to phenobarbitone, known for its enzyme-inducing properties. In this case, we present a young male patient who had experienced recurrent isolated indirect hyperbilirubinemia since early childhood, with negative results in the hemolytic workup. The patient exhibited a UGT1A1 gene defect and demonstrated a highly favorable response to phenobarbitone treatment. The purpose of this report is to raise awareness among physicians about this benign condition and underscore the importance of avoiding unnecessary investigations.
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Affiliation(s)
- Divas Rijal
- Department of Critical Care medicineTribhuvan University Teaching Hospital, Maharajgunj Medical CampusKathmanduNepal
| | - Prabhat Rijal
- Department of Internal MedicineAll India Institute of Medical SciencesRishikeshUttarakhandIndia
| | - Shyam Murti Bohare
- Department of Internal MedicineAll India Institute of Medical SciencesRishikeshUttarakhandIndia
| | - Ashish Sanjay Chaudhari
- Department of Internal MedicineAll India Institute of Medical SciencesRishikeshUttarakhandIndia
| | | | - Mayank Agarwal
- Department of Internal MedicineAll India Institute of Medical SciencesRishikeshUttarakhandIndia
| | - Pramish Bhatta
- Tribhuvan University Teaching Hospital, Maharajgunj Medical CampusKathmanduNepal
| | - Tulsi Ram Dhakal
- Tribhuvan University Teaching Hospital, Maharajgunj Medical CampusKathmanduNepal
| | - Anjali Bishwokarma
- Tribhuvan University Teaching Hospital, Maharajgunj Medical CampusKathmanduNepal
| | - Pooja Kafle
- Department of Critical Care medicineTribhuvan University Teaching Hospital, Maharajgunj Medical CampusKathmanduNepal
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14
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He Y, Zhu J, Xiao F, Luo Q, Wang P, Wang X, He Y, Xiong Z. Association of Different Total Bilirubin Levels with Prognosis of Peritoneal Dialysis-Associated Peritonitis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1837. [PMID: 37893555 PMCID: PMC10607946 DOI: 10.3390/medicina59101837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/24/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023]
Abstract
Background and Objectives: Peritoneal dialysis-associated peritonitis (PDAP) poses significant challenges in peritoneal dialysis (PD) patient management and outcomes. Total bilirubin has gained attention due to its antioxidant and immunomodulatory properties. However, its relationship with PDAP prognosis remains underexplored. Materials and Methods: We conducted a retrospective single-center study involving 243 PDAP patients stratified into tertile-based groups according to total bilirubin levels. The association between total bilirubin levels and treatment failure risk was investigated through statistical analyses and restricted cubic spline curve analysis. Results: Our analysis revealed a non-linear correlation between total bilirubin levels and PDAP treatment failure risk. At total bilirubin levels below 8.24 µmol/L, a protective effect was observed, while levels exceeding this threshold heightened the risk of treatment failure. Conclusions: This study unveils a dual role of total bilirubin in PDAP prognosis. Below a certain threshold, it confers protection, while higher levels exacerbate the risk of treatment failure. These findings emphasize the need for further investigation in larger, multicenter prospective studies to validate and elucidate the mechanisms behind bilirubin's impact on PDAP, potentially guiding the development of targeted therapeutic strategies.
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Affiliation(s)
- Yujian He
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shantou University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Jingjing Zhu
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Fei Xiao
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shantou University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Qingyun Luo
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Pengpeng Wang
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Xu Wang
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Yan He
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
| | - Zibo Xiong
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
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15
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Poynard T, Deckmyn O, Peta V, Sakka M, Lebray P, Moussalli J, Pais R, Housset C, Ratziu V, Pasmant E, Thabut D. Clinical and genetic definition of serum bilirubin levels for the diagnosis of Gilbert syndrome and hypobilirubinemia. Hepatol Commun 2023; 7:e0245. [PMID: 37738404 PMCID: PMC10519483 DOI: 10.1097/hc9.0000000000000245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 06/23/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND AND AIMS Gilbert syndrome (GS) is genotypically predetermined by UGT1A1*28 homozygosity in Europeans and is phenotypically defined by hyperbilirubinemia using total bilirubin (TB) cutoff ≥1mg/dL (17 μmol/L). The prevalence of illnesses associated with GS and hypobilirubinemia has never been studied prospectively. As TB varies with UGT1A1*28 genotyping, sex, and age, we propose stratified definitions of TB reference intervals and report the prevalence of illnesses and adjusted 15 years survival. METHODS UK Biobank with apparently healthy liver participants (middle-aged, n=138,125) were analyzed after the exclusion of of nonhealthy individuals. The stratified TB was classified as GS when TB >90th centile; <10th centile indicated hypobilirubinemia, and between the 10th and 90th centile was normobilirubinemia. We compared the prevalence and survival rates of 54 illnesses using odds ratio (OR), logistic regression, and Cox models adjusted for confounders, and causality by Mendelian randomizations. RESULTS In women, we identified 10% (7,741/76,809) of GS versus 3.7% (2,819/76,809) using the historical cutoff of ≥1 mg/dL (P<0.0001). When GS and hypobilirubinemia participants were compared with normobilirubinemia, after adjustment and Mendelian randomizations, only cholelithiasis prevalence was significantly higher (OR=1.50; 95% CI [1.3-1.7], P=0.001) in men with GS compared with normobilirubinemia and in causal association with bilirubin (P=0.04). No adjusted survival was significantly associated with GS or hypobilirubinemia. CONCLUSIONS In middle-aged Europeans, the stratified TB demonstrates a careless GS underestimation in women when using the standard unisex 1 mg/dL cutoff. The prevalence of illnesses is different in GS and hypobilirubinemia as well as survivals before adjusting for confounding factors. With the exception of cholelithiasis in men, these differences were no more significant after adjustment and Mendelian randomization.
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Affiliation(s)
- Thierry Poynard
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
- BioPredictive, Paris, France
| | | | | | - Mehdi Sakka
- Department of Biochemistry, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Pascal Lebray
- Department of Hepato-Gastroenterology, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Joseph Moussalli
- Department of Hepato-Gastroenterology, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Raluca Pais
- Department of Hepato-Gastroenterology, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Chantal Housset
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Vlad Ratziu
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
- Department of Hepato-Gastroenterology, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Eric Pasmant
- Department of Genetic, Assistance Publique-Hôpitaux de Paris (AP-HP), Cochin Hospital, Paris, France
| | - Dominique Thabut
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
- Department of Hepato-Gastroenterology, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
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16
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Shintani T, Imamura C, Ueyama-Toba Y, Inui J, Watanabe A, Mizuguchi H. Establishment of UGT1A1-knockout human iPS-derived hepatic organoids for UGT1A1-specific kinetics and toxicity evaluation. Mol Ther Methods Clin Dev 2023; 30:429-442. [PMID: 37663646 PMCID: PMC10471830 DOI: 10.1016/j.omtm.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 08/08/2023] [Indexed: 09/05/2023]
Abstract
Uridine diphosphate glucuronosyltransferases (UGTs) are highly expressed in the liver and are involved in the metabolism of many drugs. In particular, UGT1A1 has a genetic polymorphism that causes decreased activity, leading to drug-induced hepatotoxicity. Therefore, an in vitro evaluation system that accurately predicts the kinetics of drugs involving UGT1A1 is required. However, there is no such evaluation system because of the absence of the UGT1A1-selective inhibitor. Here, using human induced pluripotent stem (iPS) cells, genome editing technology, and organoid technology, we generated UGT1A1-knockout human iPS hepatocyte-derived liver organoids (UGT1A1-KO i-HOs) as a model for UGT1A1-specific kinetics and toxicity evaluation. i-HOs showed higher gene expression of many drug-metabolizing enzymes including UGT1A1 than human iPS cell-derived hepatocyte-like cells (iPS-HLCs), suggesting that hepatic organoid technology improves liver functions. Wild-type (WT) i-HOs showed similar levels of UGT1A1 activity to primary human (cryopreserved) hepatocytes, while UGT1A1-KO i-HOs completely lost the activity. Additionally, to evaluate whether this model can be used to predict drug-induced hepatotoxicity, UGT1A1-KO i-HOs were exposed to SN-38, the active metabolite of irinotecan, an anticancer drug, and acetaminophen and confirmed that these cells could predict UGT1A1-mediated toxicity. Thus, we succeeded in generating model cells that enable evaluation of UGT1A1-specific kinetics and toxicity.
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Affiliation(s)
- Tomohiro Shintani
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Chiharu Imamura
- Laboratory of Biochemistry and Molecular Biology, School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Yukiko Ueyama-Toba
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- Laboratory of Biochemistry and Molecular Biology, School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- Laboratory of Functional Organoid for Drug Discovery, National Institute of Biomedical Innovation, Health and Nutrition, Osaka 567-0085, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka 565-0871, Japan
| | - Jumpei Inui
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Akira Watanabe
- Laboratory of Biochemistry and Molecular Biology, School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- Laboratory of Biochemistry and Molecular Biology, School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- Laboratory of Functional Organoid for Drug Discovery, National Institute of Biomedical Innovation, Health and Nutrition, Osaka 567-0085, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka 565-0871, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Osaka 565-0871, Japan
- Center for Infectious Disease Education and Research, Osaka University, Osaka 565-0871, Japan
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17
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Hulshof EC, Deenen MJ, Nijenhuis M, Soree B, de Boer-Veger NJ, Buunk AM, Houwink EJF, Risselada A, Rongen GAPJM, van Schaik RHN, Touw DJ, van der Weide J, van Westrhenen R, Deneer VHM, Guchelaar HJ, Swen JJ. Dutch pharmacogenetics working group (DPWG) guideline for the gene-drug interaction between UGT1A1 and irinotecan. Eur J Hum Genet 2023; 31:982-987. [PMID: 36443464 PMCID: PMC10474017 DOI: 10.1038/s41431-022-01243-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/05/2022] [Accepted: 11/10/2022] [Indexed: 11/29/2022] Open
Abstract
The Dutch Pharmacogenetics Working Group (DPWG) aims to facilitate PGx implementation by developing evidence-based pharmacogenetics guidelines to optimize pharmacotherapy. This guideline describes the starting dose optimization of the anti-cancer drug irinotecan to decrease the risk of severe toxicity, such as (febrile) neutropenia or diarrhoea. Uridine diphosphate glucuronosyl transferase 1A1 (UGT1A1 encoded by the UGT1A1 gene) enzyme deficiency increases risk of irinotecan-induced toxicity. Gene variants leading to UGT1A1 enzyme deficiency (e.g. UGT1A1*6, *28 and *37) can be used to optimize an individual's starting dose thereby preventing carriers from toxicity. Homozygous or compound heterozygous carriers of these allele variants are defined as UGT1A1 poor metabolisers (PM). DPWG recommends a 70% starting dose in PM patients and no dose reduction in IM patients who start treatment with irinotecan. Based on the DPWG clinical implication score, UGT1A1 genotyping is considered "essential", indicating that UGT1A1 testing must be performed prior to initiating irinotecan treatment.
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Affiliation(s)
- Emma C Hulshof
- Department of Clinical Pharmacy, Catharina Hospital, Eindhoven, The Netherlands
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - Maarten J Deenen
- Department of Clinical Pharmacy, Catharina Hospital, Eindhoven, The Netherlands
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - Marga Nijenhuis
- Royal Dutch Pharmacists Association (KNMP), The Hague, The Netherlands.
| | - Bianca Soree
- Royal Dutch Pharmacists Association (KNMP), The Hague, The Netherlands
| | | | | | - Elisa J F Houwink
- Department of Public Health and Primary Care (PHEG), Leiden University Medical Centre, Leiden, The Netherlands
- National eHealth Living Lab (NELL), Leiden, The Netherlands
| | - Arne Risselada
- Department of Clinical Pharmacy, Wilhelmina Hospital, Assen, The Netherlands
| | - Gerard A P J M Rongen
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ron H N van Schaik
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Daan J Touw
- Department of Clinical Pharmacy & Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of PharmacoTherapy, -Epidemiology & -Economics, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Jan van der Weide
- Department of Clinical Chemistry, St. Jansdal Hospital, Harderwijk, The Netherlands
| | - Roos van Westrhenen
- Department of Psychiatry, Parnassia Group, Amsterdam, The Netherlands
- Department of Psychiatry and Neuropsychology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Institute of Psychiatry, Psychology & Neuroscience (IoPPN), King's College London, London, UK
| | - Vera H M Deneer
- Department of Clinical Pharmacy, Division Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Department of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Henk-Jan Guchelaar
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jesse J Swen
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
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18
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Ullah A, Stankevic E, Holm LA, Stinson SE, Juel HB, Fonvig CE, Lund MAV, Trier C, Engelbrechtsen L, Ängquist L, Jonsson AE, Pedersen O, Grarup N, Holm JC, Hansen T. Genetics of Plasma Bilirubin and Associations between Bilirubin and Cardiometabolic Risk Profiles in Danish Children and Adolescents. Antioxidants (Basel) 2023; 12:1613. [PMID: 37627608 PMCID: PMC10451688 DOI: 10.3390/antiox12081613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/27/2023] Open
Abstract
Bilirubin is the end product of heme catabolism, mainly produced by the breakdown of mature red blood cells. Due to its anti-inflammatory, antioxidant, antidiabetic, and antilipemic properties, circulating bilirubin concentrations are inversely associated with the risk of cardiovascular disease, type 2 diabetes, and all-cause mortality in adults. Some genetic loci associated with circulating bilirubin concentrations have been identified by genome-wide association studies in adults. We aimed to examine the relationship between circulating bilirubin, cardiometabolic risk factors, and inflammation in children and adolescents and the genetic architecture of plasma bilirubin concentrations. We measured fasting plasma bilirubin, cardiometabolic risk factors, and inflammatory markers in a sample of Danish children and adolescents with overweight or obesity (n = 1530) and in a population-based sample (n = 1820) of Danish children and adolescents. Linear and logistic regression analyses were performed to analyze the associations between bilirubin, cardiometabolic risk factors, and inflammatory markers. A genome-wide association study (GWAS) of fasting plasma concentrations of bilirubin was performed in children and adolescents with overweight or obesity and in a population-based sample. Bilirubin is associated inversely and significantly with a number of cardiometabolic risk factors, including body mass index (BMI) standard deviation scores (SDS), waist circumference, high-sensitivity C-reactive protein (hs-CRP), homeostatic model assessment for insulin resistance (HOMA-IR), hemoglobin A1c (HbA1c), low-density lipoprotein cholesterol (LDL-C), triglycerides, and the majority of measured inflammatory markers. In contrast, bilirubin was positively associated with fasting plasma concentrations of alanine transaminase (ALT), high-density lipoprotein cholesterol (HDL-C), systolic blood pressure (SDS), and the inflammatory markers GH, PTX3, THBS2, TNFRSF9, PGF, PAPPA, GT, CCL23, CX3CL1, SCF, and TRANCE. The GWAS showed that two loci were positively associated with plasma bilirubin concentrations at a p-value threshold of <5 × 10-8 (rs76999922: β = -0.65 SD; p = 4.3 × 10-8, and rs887829: β = 0.78 SD; p = 2.9 × 10-247). Approximately 25% of the variance in plasma bilirubin concentration was explained by rs887829. The rs887829 was not significantly associated with any of the mentioned cardiometabolic risk factors except for hs-CRP. Our findings suggest that plasma concentrations of bilirubin non-causally associates with cardiometabolic risk factors in children and adolescents.
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Affiliation(s)
- Asmat Ullah
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Evelina Stankevic
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Louise Aas Holm
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
- The Children’s Obesity Clinic, Accredited European Centre for Obesity Management, Department of Pediatrics, Holbæk Hospital, 4300 Holbæk, Denmark; (M.A.V.L.); (C.T.)
| | - Sara E. Stinson
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Helene Bæk Juel
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Cilius E. Fonvig
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
- The Children’s Obesity Clinic, Accredited European Centre for Obesity Management, Department of Pediatrics, Holbæk Hospital, 4300 Holbæk, Denmark; (M.A.V.L.); (C.T.)
- The Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Morten A. V. Lund
- The Children’s Obesity Clinic, Accredited European Centre for Obesity Management, Department of Pediatrics, Holbæk Hospital, 4300 Holbæk, Denmark; (M.A.V.L.); (C.T.)
| | - Cæcilie Trier
- The Children’s Obesity Clinic, Accredited European Centre for Obesity Management, Department of Pediatrics, Holbæk Hospital, 4300 Holbæk, Denmark; (M.A.V.L.); (C.T.)
| | - Line Engelbrechtsen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Lars Ängquist
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Anna E. Jonsson
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Oluf Pedersen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
- Clinical Center for Metabolic Research, Herlev-Gentofte University Hospital, 2900 Copenhagen, Denmark
| | - Niels Grarup
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
| | - Jens-Christian Holm
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
- The Children’s Obesity Clinic, Accredited European Centre for Obesity Management, Department of Pediatrics, Holbæk Hospital, 4300 Holbæk, Denmark; (M.A.V.L.); (C.T.)
- The Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Torben Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark or (A.U.); (E.S.); (L.A.H.); (S.E.S.); (H.B.J.); (C.E.F.); (L.E.); (L.Ä.); (A.E.J.); (O.P.); (N.G.)
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19
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Gilman A, Hatcher VR, Hefelfinger D. Incidental Scleral Icterus in an Adolescent Male With Nausea: Clinical Diagnosis of Gilbert Syndrome in the Pediatric Outpatient Setting. Cureus 2023; 15:e43298. [PMID: 37692716 PMCID: PMC10492650 DOI: 10.7759/cureus.43298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2023] [Indexed: 09/12/2023] Open
Abstract
Gilbert syndrome is a condition of non-hemolytic hyperbilirubinemia without further sequelae or primary laboratory abnormalities. Gilbert syndrome represents the most common hereditary disorder of bilirubin metabolism and is frequently identified as the etiology of familial jaundice in clinical medicine. This disorder typically manifests as mild unconjugated hyperbilirubinemia of benign nature. The diagnosis of Gilbert syndrome entails clinical assessment corroborated by the laboratory findings above in the absence of hemolysis or other organic liver diseases. We report a case of a 17-year-old boy who presented to a pediatric clinic with dyspepsia for the management of digestive symptoms, with clinical findings of mild scleral icterus and laboratory findings of isolated indirect hyperbilirubinemia. This case is unique in its subtlety of presentation. It highlights to trainees and experienced physicians the importance of the physical examination and targeted laboratory workup to arrive at the diagnosis of Gilbert syndrome.
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Affiliation(s)
- Alex Gilman
- Pediatrics, Wright State University Boonshoft School of Medicine, Dayton, USA
| | | | - Donald Hefelfinger
- Medicine, Wright State University Boonshoft School of Medicine, Dayton, USA
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20
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Baldomero AK, MacDonald DM, Kaplan A, Lock E, Cho MH, Bowler R, Gillenwater L, Kunisaki KM, Wendt CH. Bilirubin-associated single nucleotide polymorphism (SNP) and respiratory health outcomes: a mendelian randomization study. Respir Res 2023; 24:190. [PMID: 37474940 PMCID: PMC10357606 DOI: 10.1186/s12931-023-02471-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 06/07/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND Observational studies have shown an association between higher bilirubin levels and improved respiratory health outcomes. Targeting higher bilirubin levels has been proposed as a novel therapeutic strategy in COPD. However, bilirubin levels are influenced by multiple intrinsic and extrinsic factors, and these observational studies are prone to confounding. Genetic analyses are one approach to overcoming residual confounding in observational studies. OBJECTIVES To test associations between a genetic determinant of bilirubin levels and respiratory health outcomes. METHODS COPDGene participants underwent genotyping at the baseline visit. We confirmed established associations between homozygosity for rs6742078 and higher bilirubin, and between higher bilirubin and decreased risk of acute respiratory events within this cohort. For our primary analysis, we used negative binomial regression to test associations between homozygosity for rs6742078 and rate of acute respiratory events. RESULTS 8,727 participants (n = 6,228 non-Hispanic white and 2,499 African American) were included. Higher bilirubin was associated with decreased rate of acute respiratory events [incidence rate ratio (IRR) 0.85, 95% CI 0.75 to 0.96 per SD increase in bilirubin intensity]. We did not find significant associations between homozygosity for rs6742078 and acute respiratory events (IRR 0.94, 95% CI 0.70 to 1.25 for non-Hispanic white and 1.09, 95% CI 0.91 to 1.31 for African American participants). CONCLUSIONS A genetic determinant of higher bilirubin levels was not associated with better respiratory health outcomes. These results do not support targeting higher bilirubin levels as a therapeutic strategy in COPD.
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Affiliation(s)
- Arianne K Baldomero
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, Minneapolis Veterans Affairs Health Care System, One Veterans Drive, Minneapolis, MN, 55417, USA
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Minnesota, Minneapolis, MN, USA
| | - David M MacDonald
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, Minneapolis Veterans Affairs Health Care System, One Veterans Drive, Minneapolis, MN, 55417, USA.
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Minnesota, Minneapolis, MN, USA.
| | - Adam Kaplan
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Eric Lock
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Michael H Cho
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Russell Bowler
- Department of Medicine, National Jewish Health, Denver, CO, USA
| | - Lucas Gillenwater
- Computational Bioscience Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Ken M Kunisaki
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, Minneapolis Veterans Affairs Health Care System, One Veterans Drive, Minneapolis, MN, 55417, USA
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Chris H Wendt
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, Minneapolis Veterans Affairs Health Care System, One Veterans Drive, Minneapolis, MN, 55417, USA
- Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Minnesota, Minneapolis, MN, USA
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21
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Jirásková A, Škrha J, Vítek L. Association of Low Serum Bilirubin Concentrations and Promoter Variations in the UGT1A1 and HMOX1 Genes with Type 2 Diabetes Mellitus in the Czech Population. Int J Mol Sci 2023; 24:10614. [PMID: 37445792 PMCID: PMC10342136 DOI: 10.3390/ijms241310614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Bilirubin has potent biological beneficial effects, protecting against atherosclerosis, obesity, and metabolic syndrome. The aim of this study was to assess serum bilirubin concentrations and (TA)n and (GT)n microsatellite variations in the promoter regions of the UGT1A1 and HMOX1 genes, respectively, in patients with type 2 diabetes mellitus (T2DM). The study was carried out in 220 patients with T2DM and 231 healthy control subjects, in whom standard biochemical tests were performed. The (TA)n and (GT)n dinucleotide variations were determined by means of fragment (size-based) analysis using an automated capillary DNA sequencer. Compared to controls, both male and female patients with T2DM had lower serum bilirubin concentrations (9.9 vs. 12.9 μmol/L, and 9.0 vs. 10.6 μmol/L, in men and women, respectively, p < 0.001). Phenotypic Gilbert syndrome was much less prevalent in T2DM patients, as was the frequency of the (TA)7/7UGT1A1 genotype in male T2DM patients. (GT)nHMOX1 genetic variations did not differ between diabetic patients and controls. Our results demonstrate that the manifestation of T2DM is associated with lower serum bilirubin concentrations. Consumption of bilirubin due to increased oxidative stress associated with T2DM seems to be the main explanation, although (TA)n repeat variations in UGT1A1 partially contribute to this phenomenon.
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Affiliation(s)
- Alena Jirásková
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University, General University Hospital in Prague, Katerinska 32, 12000 Prague, Czech Republic;
| | - Jan Škrha
- 3rd Department of Internal Medicine, 1st Faculty of Medicine, Charles University, General University Hospital in Prague, Katerinska 32, 12000 Prague, Czech Republic;
| | - Libor Vítek
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University, General University Hospital in Prague, Katerinska 32, 12000 Prague, Czech Republic;
- 4th Department of Internal Medicine, 1st Faculty of Medicine, Charles University, General University Hospital in Prague, Katerinska 32, 12000 Prague, Czech Republic
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22
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Ray D, Loomis SJ, Venkataraghavan S, Tin A, Yu B, Chatterjee N, Selvin E, Duggal P. Characterizing common and rare variations in non-traditional glycemic biomarkers using multivariate approaches on multi-ancestry ARIC study. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.06.13.23289200. [PMID: 37398180 PMCID: PMC10312851 DOI: 10.1101/2023.06.13.23289200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Glycated hemoglobin, fasting glucose, glycated albumin, and fructosamine are biomarkers that reflect different aspects of the glycemic process. Genetic studies of these glycemic biomarkers can shed light on unknown aspects of type 2 diabetes genetics and biology. While there exists several GWAS of glycated hemoglobin and fasting glucose, very few GWAS have focused on glycated albumin or fructosamine. We performed a multi-phenotype GWAS of glycated albumin and fructosamine from 7,395 White and 2,016 Black participants in the Atherosclerosis Risk in Communities (ARIC) study on the common variants from genotyped/imputed data. We found 2 genome-wide significant loci, one mapping to known type 2 diabetes gene (ARAP1/STARD10, p = 2.8 × 10-8) and another mapping to a novel gene (UGT1A, p = 1.4 × 10-8) using multi-omics gene mapping strategies in diabetes-relevant tissues. We identified additional loci that were ancestry-specific (e.g., PRKCA from African ancestry individuals, p = 1.7 × 10-8) and sex-specific (TEX29 locus in males only, p = 3.0 × 10-8). Further, we implemented multi-phenotype gene-burden tests on whole-exome sequence data from 6,590 White and 2,309 Black ARIC participants. Eleven genes across different rare variant aggregation strategies were exome-wide significant only in multi-ancestry analysis. Four out of 11 genes had notable enrichment of rare predicted loss of function variants in African ancestry participants despite smaller sample size. Overall, 8 out of 15 loci/genes were implicated to influence these biomarkers via glycemic pathways. This study illustrates improved locus discovery and potential effector gene discovery by leveraging joint patterns of related biomarkers across entire allele frequency spectrum in multi-ancestry analyses. Most of the loci/genes we identified have not been previously implicated in studies of type 2 diabetes, and future investigation of the loci/genes potentially acting through glycemic pathways may help us better understand risk of developing type 2 diabetes.
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Affiliation(s)
- Debashree Ray
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
| | | | - Sowmya Venkataraghavan
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
| | - Adrienne Tin
- School of Medicine, University of Mississippi Medical Center, Jackson, MS
| | - Bing Yu
- Department of Epidemiology, UTHealth School of Public Health, Houston, TX
| | - Nilanjan Chatterjee
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
- Department of Oncology, School of Medicine, Johns Hopkins University, Baltimore, MD
| | - Elizabeth Selvin
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
- Welch Center for Prevention, Epidemiology, & Clinical Research, Johns Hopkins University, Baltimore, MD
| | - Priya Duggal
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
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23
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Miners JO, Polasek TM, Hulin JA, Rowland A, Meech R. Drug-drug interactions that alter the exposure of glucuronidated drugs: Scope, UDP-glucuronosyltransferase (UGT) enzyme selectivity, mechanisms (inhibition and induction), and clinical significance. Pharmacol Ther 2023:108459. [PMID: 37263383 DOI: 10.1016/j.pharmthera.2023.108459] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/03/2023]
Abstract
Drug-drug interactions (DDIs) arising from the perturbation of drug metabolising enzyme activities represent both a clinical problem and a potential economic loss for the pharmaceutical industry. DDIs involving glucuronidated drugs have historically attracted little attention and there is a perception that interactions are of minor clinical relevance. This review critically examines the scope and aetiology of DDIs that result in altered exposure of glucuronidated drugs. Interaction mechanisms, namely inhibition and induction of UDP-glucuronosyltransferase (UGT) enzymes and the potential interplay with drug transporters, are reviewed in detail, as is the clinical significance of known DDIs. Altered victim drug exposure arising from modulation of UGT enzyme activities is relatively common and, notably, the incidence and importance of UGT induction as a DDI mechanism is greater than generally believed. Numerous DDIs are clinically relevant, resulting in either loss of efficacy or an increased risk of adverse effects, necessitating dose individualisation. Several generalisations relating to the likelihood of DDIs can be drawn from the known substrate and inhibitor selectivities of UGT enzymes, highlighting the importance of comprehensive reaction phenotyping studies at an early stage of drug development. Further, rigorous assessment of the DDI liability of new chemical entities that undergo glucuronidation to a significant extent has been recommended recently by regulatory guidance. Although evidence-based approaches exist for the in vitro characterisation of UGT enzyme inhibition and induction, the availability of drugs considered appropriate for use as 'probe' substrates in clinical DDI studies is limited and this should be research priority.
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Affiliation(s)
- John O Miners
- Discipline of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders University, Adelaide, Australia.
| | - Thomas M Polasek
- Certara, Princeton, NJ, USA; Centre for Medicines Use and Safety, Monash University, Melbourne, Australia
| | - Julie-Ann Hulin
- Discipline of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Andrew Rowland
- Discipline of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Robyn Meech
- Discipline of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders University, Adelaide, Australia
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24
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Kartoun U, Fahed AC, Kany S, Singh P, Khurshid S, Patel AP, Batra P, Philippakis A, Khera AV, Lubitz SA, Ellinor PT, Anand V, Ng K. Exploring the link between Gilbert's syndrome and atherosclerotic cardiovascular disease: insights from a subpopulation-based analysis of over one million individuals. EUROPEAN HEART JOURNAL OPEN 2023; 3:oead059. [PMID: 37377635 PMCID: PMC10291878 DOI: 10.1093/ehjopen/oead059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/15/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023]
Affiliation(s)
| | - Akl C Fahed
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Cardiology, Massachusetts General Hospital, Boston, MA, USA
| | - Shinwan Kany
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Pulkit Singh
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Shaan Khurshid
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, MA, USA
| | - Aniruddh P Patel
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Cardiology, Massachusetts General Hospital, Boston, MA, USA
| | - Puneet Batra
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Anthony Philippakis
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Amit V Khera
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Cardiology, Massachusetts General Hospital, Boston, MA, USA
- Verve Therapeutics, Boston, MA, USA
| | - Steven A Lubitz
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, MA, USA
| | - Patrick T Ellinor
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, MA, USA
| | - Vibha Anand
- Center for Computational Health, IBM Research, 314 Main St., Cambridge, MA 02142, USA
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25
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Vitek L, Hinds TD, Stec DE, Tiribelli C. The physiology of bilirubin: health and disease equilibrium. Trends Mol Med 2023; 29:315-328. [PMID: 36828710 PMCID: PMC10023336 DOI: 10.1016/j.molmed.2023.01.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/24/2023]
Abstract
Bilirubin has several physiological functions, both beneficial and harmful. In addition to reactive oxygen species-scavenging activities, bilirubin has potent immunosuppressive effects associated with long-term pathophysiological sequelae. It has been recently recognized as a hormone with endocrine actions and interconnected effects on various cellular signaling pathways. Current studies show that bilirubin also decreases adiposity and prevents metabolic and cardiovascular diseases. All in all, the physiological importance of bilirubin is only now coming to light, and strategies for increasing plasma bilirubin levels to combat chronic diseases are starting to be considered. This review discusses the beneficial effects of increasing plasma bilirubin, incorporates emerging areas of bilirubin biology, and provides key concepts to advance the field.
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Affiliation(s)
- Libor Vitek
- Fourth Department of Internal Medicine and Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 120 00 Prague, Czech Republic
| | - Terry D Hinds
- Department of Pharmacology and Nutritional Sciences, Barnstable Brown Diabetes Center, Markey Cancer Center, University of Kentucky, Lexington, KY 40508, USA
| | - David E Stec
- Department of Physiology and Biophysics, Cardiorenal, and Metabolic Diseases Research Center, University of Mississippi Medical Center, Jackson, MS 39216, USA
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26
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Agarwal AM, McMurty V, Clayton AL, Bolia A, Reading NS, Mani C, Patel JL, Rets A. Clinical utility of targeted next-generation sequencing panel in routine diagnosis of hereditary hemolytic anemia: A national reference laboratory experience. Eur J Haematol 2023; 110:688-695. [PMID: 36825813 DOI: 10.1111/ejh.13951] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023]
Abstract
INTRODUCTION Hereditary hemolytic anemias (HHA) comprise a heterogeneous group of disorders resulting from defective red blood cell (RBC) cytoskeleton, RBC enzyme deficiencies, and hemoglobin (Hb) synthesis disorders such as thalassemia or sideroblastic anemia. MATERIALS AND METHODS Our hemolytic anemia diagnostic next-generation sequencing (NGS) panel includes 28 genes encoding RBC cytoskeletal proteins, membrane transporter, RBC enzymes, and certain bilirubin metabolism genes. The panel covers the complete coding region of these genes, splice junctions, and, wherever appropriate, deep intronic or regulatory regions are also included. Four hundred fifty-six patients with unexplained hemolytic anemia were evaluated using our NGS panel between 2015 and 2019. RESULTS We identified pathogenic/likely pathogenic variants in 111/456 (24%) patients that were responsible for the disease phenotype (e.g., moderate to severe hemolytic anemia and hyperbilirubinemia). Approximately 40% of the mutations were novel. As expected, 45/456 (10%) patients were homozygous for the promoter polymorphism in the UGT1A1 gene, A(TA)7 TAA (UGT1A1*28). 8/45 homozygous UGT1A1*28 cases were associated with additional pathogenic mutations causing hemolytic anemia, likely exacerbating hyperbilirubinemia. The most common mutated genes were membrane cytoskeleton genes SPTA1, and SPTB, followed by PKLR. Complex interactions between SPTA1 low expression alleles, alpha-LELY and alpha-LEPRA alleles, and intragenic SPTA1 variants were associated with hereditary pyropoikilocytosis and autosomal recessive hereditary spherocytosis in 23/111 patients. CONCLUSIONS Our results demonstrate that hemolytic anemia is underscored by complex molecular interactions of previously known and novel mutations in RBC cytoskeleton/enzyme genes, and therefore, NGS should be considered in all patients with clinically unexplained hemolytic anemia and in neonates with hyperbilirubinemia. Moreover, low expression alleles alpha-LELY and alpha-LEPRA should be included in all targeted HHA panels.
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Affiliation(s)
- Archana M Agarwal
- Department of Pathology, University of Utah Health and ARUP Laboratories, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Valarie McMurty
- Department of Pathology, University of Utah Health and ARUP Laboratories, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | | | | | - N Scott Reading
- Department of Pathology, University of Utah Health and ARUP Laboratories, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Internal Medicine, Hematology Division, University of Utah Health, Salt Lake City, Utah, USA
| | | | - Jay L Patel
- Department of Pathology, University of Utah Health and ARUP Laboratories, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Anton Rets
- Department of Pathology, University of Utah Health and ARUP Laboratories, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
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27
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Danilov SM, Jain MS, A. Petukhov P, Kurilova OV, Ilinsky VV, Trakhtman PE, Dadali EL, Samokhodskaya LM, Kamalov AA, Kost OA. Blood ACE Phenotyping for Personalized Medicine: Revelation of Patients with Conformationally Altered ACE. Biomedicines 2023; 11:biomedicines11020534. [PMID: 36831070 PMCID: PMC9953529 DOI: 10.3390/biomedicines11020534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Background: The angiotensin-converting enzyme (ACE) metabolizes a number of important peptides participating in blood pressure regulation and vascular remodeling. Elevated blood ACE is a marker for granulomatous diseases and elevated ACE expression in tissues is associated with increased risk of cardiovascular diseases. Objective and Methodology: We applied a novel approach -ACE phenotyping-to find a reason for conformationally impaired ACE in the blood of one particular donor. Similar conformationally altered ACEs were detected previously in 2-4% of the healthy population and in up to 20% of patients with uremia, and were characterized by significant increase in the rate of angiotensin I hydrolysis. Principal findings: This donor has (1) significantly increased level of endogenous ACE inhibitor in plasma with MW less than 1000; (2) increased activity toward angiotensin I; (3) M71V mutation in ABCG2 (membrane transporter for more than 200 compounds, including bilirubin). We hypothesize that this patient may also have the decreased level of free bilirubin in plasma, which normally binds to the N domain of ACE. Analysis of the local conformation of ACE in plasma of patients with Gilbert and Crigler-Najjar syndromes allowed us to speculate that binding of mAbs 1G12 and 6A12 to plasma ACE could be a natural sensor for estimation of free bilirubin level in plasma. Totally, 235 human plasma/sera samples were screened for conformational changes in soluble ACE. Conclusions/Significance: ACE phenotyping of plasma samples allows us to identify individuals with conformationally altered ACE. This type of screening has clinical significance because this conformationally altered ACE could not only result in the enhancement of the level of angiotensin II but could also serve as an indicator of free bilirubin levels.
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Affiliation(s)
- Sergei M. Danilov
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois, Chicago, IL 60607, USA
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ 85721, USA
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
- Correspondence:
| | - Mark S. Jain
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Pavel A. Petukhov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL 60612, USA
| | - Olga V. Kurilova
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | | | - Pavel E. Trakhtman
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117997 Moscow, Russia
| | | | | | - Armais A. Kamalov
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Olga A. Kost
- Chemistry Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia
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28
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Watchko JF. ABO hemolytic disease of the newborn: a need for clarity and consistency in diagnosis. J Perinatol 2023; 43:242-247. [PMID: 36344813 DOI: 10.1038/s41372-022-01556-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/11/2022]
Abstract
The diagnosis of ABO hemolytic disease of the newborn (ABO HDN) has been the subject of considerable debate and clinical confusion. Its use as an overarching default diagnosis for hyperbilirubinemia in all ABO incompatible neonates regardless of serological findings is problematic and lacks diagnostic precision. Data on hemolysis indexed by carbon monoxide (CO) levels in expired air (ETCOc) and blood (COHbc) support an essential role for a positive direct antiglobulin test (DAT) in making a more precise diagnosis of ABO HDN. A working definition that includes ABO incompatibility, significant neonatal hyperbilirubinemia, and a positive DAT is needed to gain clarity and consistency in the diagnosis of ABO HDN. Absent a positive DAT, the diagnosis of ABO HDN is suspect. Instead, a negative DAT in a severely hyperbilirubinemic ABO incompatible neonate should trigger an exhaustive search for an alternative cause, a search that may require the use of targeted gene panels.
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Affiliation(s)
- Jon F Watchko
- Professor Emeritus, Division of Newborn Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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29
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Junk SV, Schaeffeler E, Zimmermann M, Möricke A, Beier R, Schütte P, Fedders B, Alten J, Hinze L, Klein N, Kulozik A, Muckenthaler MU, Koehler R, Borkhardt A, Vijayakrishnan J, Ellinghaus D, Forster M, Franke A, Wintering A, Kratz CP, Schrappe M, Schwab M, Houlston RS, Cario G, Stanulla M. Chemotherapy-related hyperbilirubinemia in pediatric acute lymphoblastic leukemia: a genome-wide association study from the AIEOP-BFM ALL study group. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2023; 42:21. [PMID: 36639636 PMCID: PMC9838013 DOI: 10.1186/s13046-022-02585-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 12/26/2022] [Indexed: 01/15/2023]
Abstract
BACKGROUND Characterization of clinical phenotypes in context with tumor and host genomic information can aid in the development of more effective and less toxic risk-adapted and targeted treatment strategies. To analyze the impact of therapy-related hyperbilirubinemia on treatment outcome and to identify contributing genetic risk factors of this well-recognized adverse effect we evaluated serum bilirubin levels in 1547 pediatric patients with acute lymphoblastic leukemia (ALL) and conducted a genome-wide association study (GWAS). PATIENTS AND METHODS Patients were treated in multicenter trial AIEOP-BFM ALL 2000 for pediatric ALL. Bilirubin toxicity was graded 0 to 4 according to the Common Toxicity Criteria (CTC) of the National Cancer Institute. In the GWAS discovery cohort, including 650 of the 1547 individuals, genotype frequencies of 745,895 single nucleotide variants were compared between 435 patients with hyperbilirubinemia (CTC grades 1-4) during induction/consolidation treatment and 215 patients without it (grade 0). Replication analyses included 224 patients from the same trial. RESULTS Compared to patients with no (grade 0) or moderate hyperbilirubinemia (grades 1-2) during induction/consolidation, patients with grades 3-4 had a poorer 5-year event free survival (76.6 ± 3% versus 87.7 ± 1% for grades 1-2, P = 0.003; 85.2 ± 2% for grade 0, P < 0.001) and a higher cumulative incidence of relapse (15.6 ± 3% versus 9.0 ± 1% for grades 1-2, P = 0.08; 11.1 ± 1% for grade 0, P = 0.007). GWAS identified a strong association of the rs6744284 variant T allele in the UGT1A gene cluster with risk of hyperbilirubinemia (allelic odds ratio (OR) = 2.1, P = 7 × 10- 8). TT-homozygotes had a 6.5-fold increased risk of hyperbilirubinemia (grades 1-4; 95% confidence interval (CI) = 2.9-14.6, P = 7 × 10- 6) and a 16.4-fold higher risk of grade 3-4 hyperbilirubinemia (95% CI 6.1-43.8, P = 2 × 10- 8). Replication analyses confirmed these associations with joint analysis yielding genome-wide significance (allelic OR = 2.1, P = 6 × 10- 11; 95% CI 1.7-2.7). Moreover, rs6744284 genotypes were strongly linked to the Gilbert's syndrome-associated UGT1A1*28/*37 allele (r2 = 0.70), providing functional support for study findings. Of clinical importance, the rs6744284 TT genotype counterbalanced the adverse prognostic impact of high hyperbilirubinemia on therapy outcome. CONCLUSIONS Chemotherapy-related hyperbilirubinemia is a prognostic factor for treatment outcome in pediatric ALL and genetic variation in UGT1A aids in predicting the clinical impact of hyperbilirubinemia. TRIAL REGISTRATION http://www. CLINICALTRIALS gov ; #NCT00430118.
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Affiliation(s)
- Stefanie V. Junk
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Elke Schaeffeler
- Margarete-Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
| | - Martin Zimmermann
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Anja Möricke
- grid.412468.d0000 0004 0646 2097Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Rita Beier
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Peter Schütte
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Birthe Fedders
- grid.412468.d0000 0004 0646 2097Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Julia Alten
- grid.412468.d0000 0004 0646 2097Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Laura Hinze
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Norman Klein
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Andreas Kulozik
- grid.7700.00000 0001 2190 4373Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, Heidelberg, Germany
| | - Martina U. Muckenthaler
- grid.7700.00000 0001 2190 4373Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, Heidelberg, Germany
| | - Rolf Koehler
- grid.7700.00000 0001 2190 4373Department of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - Arndt Borkhardt
- grid.411327.20000 0001 2176 9917Clinic for Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Jayaram Vijayakrishnan
- grid.18886.3fDivision of Genetics and Epidemiology, The Institute of Cancer Research, Sutton, Surrey, UK
| | - David Ellinghaus
- grid.9764.c0000 0001 2153 9986Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Michael Forster
- grid.9764.c0000 0001 2153 9986Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Andre Franke
- grid.9764.c0000 0001 2153 9986Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Astrid Wintering
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Christian P. Kratz
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Martin Schrappe
- grid.412468.d0000 0004 0646 2097Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Matthias Schwab
- Margarete-Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany ,grid.10392.390000 0001 2190 1447Departments of Clinical Pharmacology, and of Biochemistry and Pharmacy, University of Tuebingen, Tuebingen, Germany ,grid.10392.390000 0001 2190 1447Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, Tuebingen, Germany ,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ) Partner Site Tübingen, Tübingen, Germany
| | - Richard S. Houlston
- grid.18886.3fDivision of Genetics and Epidemiology, The Institute of Cancer Research, Sutton, Surrey, UK
| | - Gunnar Cario
- grid.412468.d0000 0004 0646 2097Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Martin Stanulla
- grid.10423.340000 0000 9529 9877Department of Pediatric Hematology and Oncology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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30
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Gurjar R, Dickinson L, Carr D, Stöhr W, Bonora S, Owen A, D'Avolio A, Cursley A, De Castro N, Fätkenheuer G, Vandekerckhove L, Di Perri G, Pozniak A, Schwimmer C, Raffi F, Boffito M. Influence of UGT1A1 and SLC22A6 polymorphisms on the population pharmacokinetics and pharmacodynamics of raltegravir in HIV-infected adults: a NEAT001/ANRS143 sub-study. THE PHARMACOGENOMICS JOURNAL 2023; 23:14-20. [PMID: 36266537 PMCID: PMC9584256 DOI: 10.1038/s41397-022-00293-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 09/13/2022] [Accepted: 09/29/2022] [Indexed: 11/04/2022]
Abstract
Using concentration-time data from the NEAT001/ARNS143 study (single sample at week 4 and 24), we determined raltegravir pharmacokinetic parameters using nonlinear mixed effects modelling (NONMEM v.7.3; 602 samples from 349 patients) and investigated the influence of demographics and SNPs (SLC22A6 and UGT1A1) on raltegravir pharmacokinetics and pharmacodynamics. Demographics and SNPs did not influence raltegravir pharmacokinetics and no significant pharmacokinetic/pharmacodynamic relationships were observed. At week 96, UGT1A1*28/*28 was associated with lower virological failure (p = 0.012), even after adjusting for baseline CD4 count (p = 0.048), but not when adjusted for baseline HIV-1 viral load (p = 0.082) or both (p = 0.089). This is the first study to our knowledge to assess the influence of SNPs on raltegravir pharmacodynamics. The lack of a pharmacokinetic/pharmacodynamic relationship is potentially an artefact of raltegravir's characteristic high inter and intra-patient variability and also suggesting single time point sampling schedules are inadequate to thoroughly assess the influence of SNPs on raltegravir pharmacokinetics.
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Affiliation(s)
- Rohan Gurjar
- Department of Pharmacology & Therapeutics, University of Liverpool, Liverpool, UK
| | - Laura Dickinson
- Department of Pharmacology & Therapeutics, University of Liverpool, Liverpool, UK.
| | - Daniel Carr
- Department of Pharmacology & Therapeutics, University of Liverpool, Liverpool, UK
| | | | - Stefano Bonora
- Unit of Infectious Diseases, University of Turin, Turin, Italy
| | - Andrew Owen
- Department of Pharmacology & Therapeutics, University of Liverpool, Liverpool, UK
| | | | | | - Nathalie De Castro
- Infectious Diseases Department, AP-HP Hôpital Saint-Louis, Paris, France
| | | | - Linos Vandekerckhove
- HIV Translational Research Unit, Ghent University and Ghent University Hospital, Ghent, Belgium
| | | | | | - Christine Schwimmer
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR 1219, Bordeaux, France
| | - François Raffi
- Department of Infectious Diseases, Centre Hospitalier Universitaire de Nantes, and CIC 1413, INSERM, Nantes, France
| | - Marta Boffito
- Chelsea and Westminster NHS Trust, London, UK.,Imperial College, London, UK
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31
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Zhou TC, Li X, Li H, Liu FW, Zhang SH, Fan JH, Yang WX, Yang YL, Zhang L, Wei J. Concurrence of novel mutations causing Gilbert's and Dubin-Johnson syndrome with poor clinical outcomes in a Han Chinese family. J Hum Genet 2023; 68:17-23. [PMID: 36274106 DOI: 10.1038/s10038-022-01086-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/15/2022] [Accepted: 09/16/2022] [Indexed: 01/11/2023]
Abstract
Dual-hereditary jaundice (Dubin-Johnson syndrome (DJS) and Gilbert's syndrome (GS)) is a rare clinical entity resulting from defects of the ATP binding cassette subfamily C member 2 (ABCC2) and UDP glucuronosyltransferase family 1 member A1 (UGT1A1) genes with autosomal recessive inheritance. In this study, we aimed to investigate the mutation profiles and characterize the phenotypes in a Han Chinese family with DJS and GS. Genetic screening for variants in the ABCC2 and UGT1A1, immunohistochemistry for expression of ABCC2, and histopathological examination were carried out. The proband and his brother had unconjugated and conjugated hyperbilirubinemia after birth. The proband's sister had only conjugated hyperbilirubinemia after birth. The proband developed into pleural effusions and ascites, pericardial thickening, intrahepatic and extrahepatic biliary duct dilatation, and enlarged gallbladder at age 50. Hepatocellular carcinoma occurred in the proband's brother at age 46. Seven compound defects of the ABCC2 gene [c.2414delG, p.(Ile1489Gly), p.(Thr1490Pro), and p.(Ile1491Gln)] and the UGT1A1 gene (c.-3279T>G, p.(Gly71Arg), and p.(Pro451Leu)) were identified in family members. Accumulation of pigment in hepatocytes characteristic of that in DJS was present in the proband and his brother. Expression of ABCC2 protein was markedly diminished in the patient's liver. Our results show a different genetic profile of DJS and GS in a Han Chinese family, indicating a more complex pattern of dual-hereditary jaundice among different populations. The present study illuminates the underpinnings of DJS and GS and extends the mutation profiles and phenotypes of these two syndromes in dual-hereditary jaundice.
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Affiliation(s)
- Tai-Cheng Zhou
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Xiao Li
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Hui Li
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Feng-Wei Liu
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Si-Hang Zhang
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Jing-Hua Fan
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Wen-Xiu Yang
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Ya-Li Yang
- Pathology Department, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Liang Zhang
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China
| | - Jia Wei
- Central Lab, Liver Disease Research Center and Department of Infectious Disease, The Affiliated Hospital of Yunnan University (The Second People's Hospital of Yunnan Province), Kunming, China.
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32
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Yang H, Li H, Xia Q, Dai W, Li X, Liu Y, Nie J, Yang F, Sun Y, Feng L, Yang L. UGT1A1 variants in Chinese Uighur and Han newborns and its correlation with neonatal hyperbilirubinemia. PLoS One 2022; 17:e0279059. [PMID: 36520959 PMCID: PMC9754166 DOI: 10.1371/journal.pone.0279059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 11/17/2022] [Indexed: 12/23/2022] Open
Abstract
To explore the correlation between UGT1A1 variant and neonatal hyperbilirubinemia in Chinese Uighur and Han populations. We conducted this study in Urumqi, China. Umbilical cord blood specimens and clinical information of term infants born in the studied center were collected. Variation status of UGT1A1 was determined by direct sequencing or capillary electrophoresis analysis. 102 Uighur and 99 Han normal term neonates, together with 19 hospitalized term newborns (10 Uighur and 9 Han) due to significant hyperbilirubinemia were enrolled into the final analysis. The incidence of neonates with high-risk transcutaneous bilirubin level (TCB) were much higher in Han newborns than in Uighur newborns(P = 0.01). Also, there was statistically significant difference in (TA) 7 promoter mutation of UGT1A1 between Han and Uighur group(χ2 = 4.675, P = 0.03). Furthermore, exon mutation (c.211 and /or c.1091) in UGT1A1 gene was significantly associated with increased TCB level (ORadj = 1.41, 95%CI: 0.25-2.51, P = 0.002) and higher risk of hyperbilirubinemia in both Han and Uighur infants after adjusted for covariates (ORadj = 2.21, 95%CI: 1.09-4.49, P = 0.03). In conclusion, UGT1A1 promoter polymorphism seem to be an important genetic modulator of plasma bilirubin level and neonatal hyperbilirubinemia risk within ethnic groups. Genetic assessment of UGT1A1 coding variants may be useful for clinical diagnosis of neonatal jaundice.
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Affiliation(s)
- Hui Yang
- Department of Laboratory Medicine, School of Medicine, Yangtze University, Jingzhou, China
- * E-mail:
| | - Huijun Li
- Department of Gynecology and Obstetrics, Maternity and Child Health Care Hospital, Urumqi Municipality Xinjiang Uighur Autonomous Region, Xinjiang Province, China
| | - Qingyao Xia
- Department of Laboratory Medicine, Western China Women and Child’s Hospital, Sichuan University, Chengdu, China
| | - Wencheng Dai
- Department of Gynecology and Obstetrics, Maternity and Child Health Care Hospital, Urumqi Municipality Xinjiang Uighur Autonomous Region, Xinjiang Province, China
| | - Xin Li
- Department of Laboratory Medicine, School of Medicine, Yangtze University, Jingzhou, China
| | - Yan Liu
- Department of Laboratory Medicine, School of Medicine, Yangtze University, Jingzhou, China
| | - Jie Nie
- Department of Laboratory Medicine, School of Medicine, Yangtze University, Jingzhou, China
| | - Fei Yang
- Department of Laboratory Medicine, School of Medicine, Yangtze University, Jingzhou, China
| | - Yunfeng Sun
- Department of Rehabilitation, Affiliated Traditional Chinese Medicine Hospital of Xinjiang Medical University, Urumqi Municipality Xinjiang Uighur Autonomous Region, Xinjiang Province, China
| | - Lei Feng
- Department of Laboratory Medicine, People’s Hospital of Yuxi City, Yuxi, P. R. China
| | - Liye Yang
- Lab for Respiratory Disease, People’s Hospital of Yangjiang, Yangjiang, P. R. China
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33
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Herta T, Beuers U. A historical review of jaundice: May the golden oriole live forever. Clin Liver Dis (Hoboken) 2022; 20:45-56. [PMID: 36518790 PMCID: PMC9742756 DOI: 10.1002/cld.1267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/30/2022] [Indexed: 12/14/2022] Open
Abstract
Content available: Audio Recording.
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Affiliation(s)
- Toni Herta
- Department of Gastroenterology and Hepatology and Tytgat Institute for Liver and Intestinal ResearchAmsterdam University Medical Centers, University of AmsterdamAmsterdamThe Netherlands
| | - Ulrich Beuers
- Department of Gastroenterology and Hepatology and Tytgat Institute for Liver and Intestinal ResearchAmsterdam University Medical Centers, University of AmsterdamAmsterdamThe Netherlands
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34
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Peng S, Magdesian KG, Dowd J, Blea J, Carpenter R, Ho W, Finno CJ. Investigation of high gamma‐glutamyltransferase syndrome in California Thoroughbred racehorses. Vet Med (Auckl) 2022; 36:2203-2212. [DOI: 10.1111/jvim.16582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 10/21/2022] [Indexed: 11/16/2022]
Affiliation(s)
- Sichong Peng
- Department of Population Health and Reproduction University of California Davis California USA
| | - K. Gary Magdesian
- Department of Medicine and Epidemiology School of Veterinary Medicine, University of California Davis California USA
| | - Joseph Dowd
- Equine Medical and Surgical Group Arcadia California USA
| | - Jeffrey Blea
- Von Bleucher, Blea, Hunkin, DVM, Inc Sierra Madre California USA
| | | | - Wayne Ho
- Southern California Equine Foundation Arcadia California USA
| | - Carrie J. Finno
- Department of Population Health and Reproduction University of California Davis California USA
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Krawczyk M, Böhm M. The 50 shades of bilirubin. Letter regarding the article 'Liver tests and outcomes in heart failure with reduced ejection fraction: findings from DAPA-HF'. Eur J Heart Fail 2022; 24:2206. [PMID: 36065791 DOI: 10.1002/ejhf.2671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Marcin Krawczyk
- Department of Medicine II, Saarland University Medical Centre, Saarland University, Homburg, Germany.,Laboratory of Metabolic Liver Diseases, Department of General, Transplant and Liver Surgery, Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Michael Böhm
- Department of Internal Medicine III, Cardiology, Angiology and Intensive Care Medicine, Saarland University, Homburg, Germany
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Smeijer JD, Koomen JV, Kohan DE, McMurray JJV, Bakris GL, Correa‐Rotter R, Hou F, Kitzman DW, Makino H, Mayer G, Nowicki M, Perkovic V, Rossing P, Tobe S, Parving H, de Zeeuw D, Heerspink HJL. Organic Anion Transporter Gene Variants Associated With Plasma Exposure and Long-Term Response to Atrasentan in Patients With Diabetic Kidney Disease. Clin Pharmacol Ther 2022; 112:1098-1107. [PMID: 35892316 PMCID: PMC9804438 DOI: 10.1002/cpt.2721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 07/10/2022] [Indexed: 01/07/2023]
Abstract
Plasma exposure of the endothelin receptor antagonist atrasentan varies between individuals and is associated with nephroprotective effects and the risk of heart failure. We examined the influence of genetic polymorphisms on atrasentan plasma exposure and pharmacodynamic effects. We performed a substudy of the Study of Diabetic Nephropathy With Atrasentan (SONAR) trial which enrolled adults with type 2 diabetes and chronic kidney disease (estimated glomerular filtration rate: 25-75 mL/min/1.73 m2 , and a urine albumin-to-creatinine ratio of 300-5,000 mg/g). Single nucleotide polymorphisms (SNPs) were determined for prespecified membrane transporters, metabolizing enzymes, and the endothelin-1 peptide. The associations among genotype, atrasentan plasma exposure, and the effect of atrasentan on the prespecified kidney and heart failure hospitalization (HHF) outcomes was assessed with Cox proportional hazards regression models. Of 3,668 patients randomized, 2,329 (63.5%) consented to genotype analysis. Two SNPs in the SLCO1B1 gene (rs4149056 and rs2306283), encoding the hepatic organic anion transporter 1B1 (OATP1B1), showed the strongest association with atrasentan plasma exposure. Based on their SLCO1B1 genotype, patients were classified into normal (atrasentan area under the plasma-concentration time curve from zero to infinity (AUC0-inf ) 41.3 ng·h/mL) or slow (atrasentan AUC0-inf 49.7 ng·h/mL, P < 0.001) OATP1B1 transporter phenotypes. Among patients with a normal OATP1B1 phenotype, the hazard ratio (HR) with atrasentan for the primary kidney and HHF outcomes were 0.61 (95% confidence interval (CI): 0.45-0.81) and 1.35 (95% CI: 0.84-2.13), respectively. In the slow transporter phenotype, HRs for kidney and HHF outcomes were 1.95 (95% CI: 0.95-4.03, P-interaction normal phenotype = 0.004), and 4.18 (95% CI: 1.37-12.7, P-interaction normal phenotype = 0.060), respectively. OATP1B1 gene polymorphisms are associated with significant between-patient variability in atrasentan plasma exposure and long-term efficacy and safety.
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Affiliation(s)
- J. David Smeijer
- Department of Clinical Pharmacy and PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Jeroen V. Koomen
- Department of Clinical Pharmacy and PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Donald E. Kohan
- Division of NephrologyUniversity of Utah HealthSalt Lake CityUtahUSA
| | - John J. V. McMurray
- British Heart Foundation Cardiovascular Research CentreUniversity of GlasgowGlasgowUK
| | - George L. Bakris
- American Society of Hypertension Comprehensive Hypertension CenterUniversity of Chicago Medicine and Biological SciencesChicagoIllinoisUSA
| | | | - Fan‐Fan Hou
- Division of Nephrology, Nanfang HospitalSouthern Medical University, National Clinical Research Center for Kidney DiseaseGuangzhouChina
| | - Dalane W. Kitzman
- Sections on Cardiovascular Disease and GeriatricsWake Forest School of MedicineWinston‐SalemNorth CarolinaUSA
| | | | - Gert Mayer
- Department of Internal Medicine IV (Nephrology and Hypertension)Medical University of InnsbruckInnsbruckAustria
| | - Michal Nowicki
- Department of Nephrology, Hypertension and Kidney TransplantationMedical University of LodzLodzPoland
| | - Vlado Perkovic
- George Institute for Global HealthNewtownNew South WalesAustralia,University of New South WalesSydneyNew South WalesAustralia
| | - Peter Rossing
- Steno Diabetes CenterGentofteDenmark,Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
| | - Sheldon Tobe
- Division of Nephrology, Sunnybrook Health Sciences CentreUniversity of Toronto and the Northern Ontario School of MedicineTorontoOntarioCanada
| | - Hans‐Henrik Parving
- Department of Medical EndocrinologyRigshospitalet Copenhagen University HospitalCopenhagenDenmark
| | - Dick de Zeeuw
- Department of Clinical Pharmacy and PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Hiddo J. L. Heerspink
- Department of Clinical Pharmacy and PharmacologyUniversity of GroningenGroningenThe Netherlands,George Institute for Global HealthNewtownNew South WalesAustralia
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Hsu PWC, Liao PC, Kao YH, Lin XY, Chien RN, Yeh CT, Lai CC, Shyu YC, Lin CL. The Mutation Hotspots at UGT1A Locus May Be Associated with Gilbert's Syndrome Affecting the Taiwanese Population. Int J Mol Sci 2022; 23:ijms232012709. [PMID: 36293566 PMCID: PMC9603874 DOI: 10.3390/ijms232012709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 01/24/2023] Open
Abstract
Gilbert's syndrome is mainly diagnosed through genetic analysis and is primarily detected through a mutation in the promoter region of the UGT1A1 gene. However, most of the research has been conducted on Caucasian populations. In this study, we studied the Han population in Taiwan to investigate the possibility of other mutations that could cause Gilbert's syndrome. This study comprised a test group of 45 Taiwanese individuals with Gilbert's syndrome and 180 healthy Taiwanese individuals as a control group. We extracted DNA from the blood samples and then used Axiom Genome-Wide TWB 2.0 array plates for genotyping. Out of 302,771 single nucleotide polymorphisms (SNPs) from 225 subjects, we detected 57 SNPs with the most significant shift in allele frequency; 27 SNPs among them were located in the UGT1A region. Most of the detected SNPs highly correlated with each other and are located near the first exon of UGT1A1, UGT1A3, UGT1A6, and UGT1A7. We used these SNPs as an input for the machine learning algorithms and developed prediction models. Our study reveals a good association between the 27 SNPs detected and Gilbert's syndrome. Hence, this study provides a reference for diagnosing Gilbert's syndrome in the Taiwanese population in the future.
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Affiliation(s)
- Paul Wei-Che Hsu
- Institute of Molecular and Genomic Medicine, National Health Research Institute, Zhunan 350, Taiwan
| | - Po-Cheng Liao
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
| | - Yu-Hsiang Kao
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
| | - Xin-Yu Lin
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
| | - Rong-Nan Chien
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chau-Ting Yeh
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chi-Chun Lai
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
- Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Yu-Chiau Shyu
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
- Department of Nursing, Chang Gung University of Science and Technology, Taoyuan 259, Taiwan
- Correspondence: (Y.-C.S.); (C.-L.L.)
| | - Chih-Lang Lin
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Liver Research Unit, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Correspondence: (Y.-C.S.); (C.-L.L.)
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Daudon M, Lionnet F, Loi V, Amiot X, Boury A, Haymann JP, Bazin D. Features of gallstones in adult sickle cell patients. CR CHIM 2022. [DOI: 10.5802/crchim.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Comparative analysis of bilirubin glucuronidation activity in canine and human primary hepatocytes using a 3D culture system. In Vitro Cell Dev Biol Anim 2022; 58:712-718. [PMID: 35913527 DOI: 10.1007/s11626-022-00711-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/13/2022] [Indexed: 11/05/2022]
Abstract
Species differences in bilirubin glucuronidation activity are observed between humans and dogs through liver microsomes and recombinant UDP-glucuronosyltransferase 1A1. Humans exhibit higher activity than that of dogs. In this study, bilirubin glucuronidation activity was examined in canine and human primary hepatocyte spheroids formed using a 3D culture system. When spheroid development in canine and human primary hepatocytes was evaluated on days 7 and 14 after the start of culture, canine primary hepatocyte spheroids had a more distinct spherical shape than human hepatocyte spheroids, irrespective of the culture period. Furthermore, mono- and di-glucuronide generation detected in spheroids were significantly higher (P < 0.05) in human primary hepatocytes than in canine primary hepatocytes after 24 h of incubation with bilirubin for each culture period. These results suggest that there are species differences in the bilirubin glucuronidation activity of primary hepatocytes with spheroid formation between humans and dogs, with the activity being higher in humans than in dogs.
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Ahire D, Kruger L, Sharma S, Mettu VS, Basit A, Prasad B. Quantitative Proteomics in Translational Absorption, Distribution, Metabolism, and Excretion and Precision Medicine. Pharmacol Rev 2022; 74:769-796. [PMID: 35738681 DOI: 10.1124/pharmrev.121.000449] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A reliable translation of in vitro and preclinical data on drug absorption, distribution, metabolism, and excretion (ADME) to humans is important for safe and effective drug development. Precision medicine that is expected to provide the right clinical dose for the right patient at the right time requires a comprehensive understanding of population factors affecting drug disposition and response. Characterization of drug-metabolizing enzymes and transporters for the protein abundance and their interindividual as well as differential tissue and cross-species variabilities is important for translational ADME and precision medicine. This review first provides a brief overview of quantitative proteomics principles including liquid chromatography-tandem mass spectrometry tools, data acquisition approaches, proteomics sample preparation techniques, and quality controls for ensuring rigor and reproducibility in protein quantification data. Then, potential applications of quantitative proteomics in the translation of in vitro and preclinical data as well as prediction of interindividual variability are discussed in detail with tabulated examples. The applications of quantitative proteomics data in physiologically based pharmacokinetic modeling for ADME prediction are discussed with representative case examples. Finally, various considerations for reliable quantitative proteomics analysis for translational ADME and precision medicine and the future directions are discussed. SIGNIFICANCE STATEMENT: Quantitative proteomics analysis of drug-metabolizing enzymes and transporters in humans and preclinical species provides key physiological information that assists in the translation of in vitro and preclinical data to humans. This review provides the principles and applications of quantitative proteomics in characterizing in vitro, ex vivo, and preclinical models for translational research and interindividual variability prediction. Integration of these data into physiologically based pharmacokinetic modeling is proving to be critical for safe, effective, timely, and cost-effective drug development.
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Affiliation(s)
- Deepak Ahire
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Laken Kruger
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Sheena Sharma
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Vijaya Saradhi Mettu
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Abdul Basit
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Bhagwat Prasad
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
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Atasilp C, Biswas M, Jinda P, Nuntharadthanaphong N, Rachanakul J, Hongkaew Y, Vanwong N, Saokaew S, Sukasem C. Association of UGT1A1*6, UGT1A1*28, or ABCC2 c.3972C>T genetic polymorphisms with irinotecan-induced toxicity in Asian cancer patients: Meta-analysis. Clin Transl Sci 2022; 15:1613-1633. [PMID: 35506159 PMCID: PMC9283744 DOI: 10.1111/cts.13277] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/11/2022] [Accepted: 03/16/2022] [Indexed: 11/30/2022] Open
Abstract
Effects of UGT1A1*6 and UGT1A1*28 genetic polymorphisms on irinotecan-induced severe toxicities in Asian cancer patients are inconclusive. Also, ABCC2 c.3972C>T may affect toxicity of irinotecan. The aim was to assess the aggregated risk of neutropenia or diarrhea in Asian cancer patients taking irinotecan and inherited UGT1A1*6, UGT1A1*28, or ABCC2 c.3972C>T genetic variants. A PubMed literature search for eligible studies was conducted. Odds ratios (ORs) were measured using RevMan software where p values <0.05 were statistically significant. Patients that inherited both UGT1A1*6 and UGT1A1*28 genetic variants (heterozygous: UGT1A1*1/*6 + *1/*28 and homozygous: UGT1A1*6/*6 + *28/*28) were significantly associated with increased risk of neutropenia and diarrhea compared to patients with UGT1A1*1/*1 (neutropenia: OR 2.89; 95% CI 1.97-4.23; p < 0.00001; diarrhea: OR 2.26; 95% CI 1.71-2.99; p < 0.00001). Patients carrying homozygous variants had much stronger effects in developing toxicities (neutropenia: OR 6.23; 95% CI 3.11-12.47; p < 0.00001; diarrhea: OR 3.21; 95% CI 2.13-4.85; p < 0.00001) than those with heterozygous variants. However, patients carrying the ABCC2 c.3972C>T genetic variant were not significantly associated with neutropenia (OR 1.67; 95% CI 0.98-2.84; p = 0.06) and were significantly associated with a reduction in irinotecan-induced diarrhea (OR 0.31; 95% CI 0.11-0.81; p = 0.02). Asian cancer patients should undergo screening for both UGT1A1*6 and UGT1A1*28 genetic variants to reduce substantially irinotecan-induced severe toxicities.
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Affiliation(s)
- Chalirmporn Atasilp
- Chulabhorn International College of MedicineThammasat UniversityPathum ThaniThailand
| | - Mohitosh Biswas
- Division of Pharmacogenomics and Personalized Medicine, Department of PathologyFaculty of Medicine Ramathibodi Hospital, Mahidol UniversityBangkokThailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi HospitalBangkokThailand
- Department of PharmacyUniversity of RajshahiRajshahiBangladesh
| | - Pimonpan Jinda
- Division of Pharmacogenomics and Personalized Medicine, Department of PathologyFaculty of Medicine Ramathibodi Hospital, Mahidol UniversityBangkokThailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi HospitalBangkokThailand
| | - Nutthan Nuntharadthanaphong
- Division of Pharmacogenomics and Personalized Medicine, Department of PathologyFaculty of Medicine Ramathibodi Hospital, Mahidol UniversityBangkokThailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi HospitalBangkokThailand
| | - Jiratha Rachanakul
- Division of Pharmacogenomics and Personalized Medicine, Department of PathologyFaculty of Medicine Ramathibodi Hospital, Mahidol UniversityBangkokThailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi HospitalBangkokThailand
| | - Yaowaluck Hongkaew
- Advance Research and Development LaboratoryBumrungrad International HospitalBangkokThailand
| | - Natchaya Vanwong
- Department of Clinical Chemistry, Faculty of Allied Health SciencesChulalongkorn UniversityBangkokThailand
| | - Surasak Saokaew
- Division of Pharmacy Practice, Department of Pharmaceutical CareSchool of Pharmaceutical Sciences, University of PhayaoPhayaoThailand
- Center of Health Outcomes Research and Therapeutic Safety (COHORTS)School of Pharmaceutical Sciences, University of PhayaoPhayaoThailand
- Unit of Excellence on Clinical Outcomes Research and Integration (UNICORN)School of Pharmaceutical Sciences, University of PhayaoPhayaoThailand
| | - Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of PathologyFaculty of Medicine Ramathibodi Hospital, Mahidol UniversityBangkokThailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi HospitalBangkokThailand
- Pharmacogenomics and Precision Medicine, The Preventive Genomics & Family Check‐up Services CenterBumrungrad International HospitalBangkokThailand
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Kong X, Xu Y, Gao P, Liu Y, Wang X, Zhao M, Jiang Y, Yang H, Cao Y, Ma L. Rapid detection of the irinotecan-related UGT1A1*28 polymorphism by asymmetric PCR melting curve analysis using one fluorescent probe. J Clin Lab Anal 2022; 36:e24578. [PMID: 35766440 PMCID: PMC9396174 DOI: 10.1002/jcla.24578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 06/09/2022] [Accepted: 06/18/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Determination of UGT1A1 (TA)n polymorphism prior to irinotecan therapy is necessary to avoid severe adverse drug effects. Thus, accurate and reliable genotyping methods for (TA)n polymorphism are highly desired. Here, we present a new method for polymerase chain reaction (PCR) melting curve analysis using one fluorescent probe to discriminate the UGT1A1*1 [(TA)6 ] and *28 [(TA)7 ] genotypes. METHODS After protocol optimization, this technique was applied for genotyping of 64 patients (including 23 with UGT1A1*1/*1, 22 with *1/*28, and 19 with *28/*28) recruited between 2016 and 2021 in China-Japan Friendship Hospital. The accuracy of the method was evaluated by comparing the results with those of direct sequencing and fragment analysis. The intra- and inter-run precision of the melting temperatures (Tm s) were calculated to assess the reliability, and the limit of detection was examined to assess the sensitivity. RESULTS All genotypes were correctly identified with the new method, and its accuracy was higher than that of fragment analysis. The intra- and inter-run coefficients of variation for the Tm s were both ≤0.27%, with standard deviations ≤0.14°C. The limit of detection was 0.2 ng of input genomic DNA. CONCLUSION The developed PCR melting curve analysis using one fluorescent probe can provide accurate, reliable, rapid, simple, and low-cost detection of UGT1A1 (TA)n polymorphism, and its use can be easily generalized in clinical laboratories with a fluorescent PCR platform.
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Affiliation(s)
- Xiaomu Kong
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Ye Xu
- Engineering Research Centre of Molecular Diagnostics, Ministry of Education, State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Peng Gao
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Yi Liu
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Xuran Wang
- Engineering Research Centre of Molecular Diagnostics, Ministry of Education, State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - Meimei Zhao
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Yongwei Jiang
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Hui Yang
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Yongtong Cao
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Liang Ma
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
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Bancone G, Gornsawun G, Peerawaranun P, Penpitchaporn P, Paw MK, Poe DD, Win D, Cicelia N, Mukaka M, Archasuksan L, Thielemans L, Nosten F, White NJ, McGready R, Carrara VI. Contribution of genetic factors to high rates of neonatal hyperbilirubinaemia on the Thailand-Myanmar border. PLOS GLOBAL PUBLIC HEALTH 2022; 2:e0000475. [PMID: 36962413 PMCID: PMC10021142 DOI: 10.1371/journal.pgph.0000475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/04/2022] [Indexed: 11/19/2022]
Abstract
Very high unconjugated bilirubin plasma concentrations in neonates (neonatal hyperbilirubinaemia; NH) may cause neurologic damage (kernicterus). Both increased red blood cell turn-over and immaturity of hepatic glucuronidation contribute to neonatal hyperbilirubinaemia. The incidence of NH requiring phototherapy during the first week of life on the Thailand-Myanmar border is high (approximately 25%). On the Thailand-Myanmar border we investigated the contribution of genetic risk factors to high bilirubin levels in the first month of life in 1596 neonates enrolled in a prospective observational birth cohort study. Lower gestational age (<38 weeks), mutations in the genes encoding glucose-6-phosphate dehydrogenase (G6PD) and uridine 5'-diphospho-glucuronosyltransferase (UGT) 1A1 were identified as the main independent risk factors for NH in the first week, and for prolonged jaundice in the first month of life. Population attributable risks (PAR%) were 61.7% for lower gestational age, 22.9% for hemi or homozygous and 9.9% for heterozygous G6PD deficiency respectively, and 6.3% for UGT1A1*6 homozygosity. In neonates with an estimated gestational age ≥ 38 weeks, G6PD mutations contributed PARs of 38.1% and 23.6% for "early" (≤ 48 hours) and "late" (49-168 hours) NH respectively. For late NH, the PAR for UGT1A1*6 homozygosity was 7.7%. Maternal excess weight was also a significant risk factor for "early" NH while maternal mutations on the beta-globin gene, prolonged rupture of membranes, large haematomas and neonatal sepsis were risk factors for "late" NH. For prolonged jaundice during the first month of life, G6PD mutations and UGT1A1*6 mutation, together with lower gestational age at birth and presence of haematoma were significant risk factors. In this population, genetic factors contribute considerably to the high risk of NH. Diagnostic tools to identify G6PD deficiency at birth would facilitate early recognition of high risk cases.
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Affiliation(s)
- Germana Bancone
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Gornpan Gornsawun
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Pimnara Peerawaranun
- Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Penporn Penpitchaporn
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Moo Kho Paw
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Day Day Poe
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - December Win
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Naw Cicelia
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Mavuto Mukaka
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Laypaw Archasuksan
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Laurence Thielemans
- Neonatology-Pediatrics Department, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Francois Nosten
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Nicholas J. White
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Rose McGready
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Verena I. Carrara
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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Wang F, Li Y, Zhao S, Chen Z, Xu Z, Wang L, Zhang TJ, Yan J, Cao L, Wang P, Li A, Zhong Y, Wu Z, Qi X, Zhang M, Wu N. The utility of hierarchical genetic testing in paediatric liver disease. Liver Int 2022; 42:1097-1108. [PMID: 35257483 DOI: 10.1111/liv.15235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/20/2021] [Accepted: 11/01/2021] [Indexed: 02/13/2023]
Abstract
BACKGROUND & AIMS Genetic factors underlie a substantial proportion of paediatric liver diseases. Hereditary liver diseases have considerable genetic heterogeneity and variable clinical manifestations, which bring great challenges to clinical and molecular diagnoses. In this study, we investigated a group of paediatric patients with varying degrees of liver dysfunction using a hierarchical genetic testing strategy. METHODS We first applied a panel encompassing 166 known causal genes of liver disease. We then used exome sequencing (ES) in those patients whose cases remained undiagnosed to identify the genetic aetiology of their symptoms. RESULTS In total, we enrolled 131 unrelated paediatric patients with liver disease of Chinese Han ethnicity. We first applied targeted gene sequencing of 166 genes to all patients and yielded a diagnostic rate of 35.9% (47 of 131). Eighty-four patients who remained undiagnosed after target gene sequencing were subjected to ES. As a result, eight (8/84, 9.5%) of them obtained molecular diagnoses, including four patients suspected of abnormal bilirubin metabolism and four idiopathic cases. Non-typical genetic findings, including digenic inheritance and dual molecular diagnosis, were also identified. Through a comprehensive assessment of novel candidate variants of uncertain disease association, 11 patients of the remaining undiagnosed patients were able to obtain likely molecular diagnoses. CONCLUSIONS Our study presents evidence for the diagnostic utility of sequential genetic testing in a cohort of patients with paediatric liver disease. Our findings expand the understanding of the phenotypic and mutational spectrum underlying this heterogeneous group of diseases.
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Affiliation(s)
- Fuchuan Wang
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yaqi Li
- Department of Orthopedic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
| | - Sen Zhao
- Department of Orthopedic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
| | - Zefu Chen
- Department of Orthopedic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
| | - Zhiqiang Xu
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lianlei Wang
- Department of Orthopedic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, P. R. China
| | - Terry Jianguo Zhang
- Department of Orthopedic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
| | - Jianguo Yan
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lili Cao
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Pu Wang
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Aiqin Li
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yanwei Zhong
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhihong Wu
- Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaolong Qi
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou, China
| | - Min Zhang
- Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Nan Wu
- Department of Orthopedic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
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45
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Lin N, Damask A, Boyapati A, Hamilton JD, Hamon S, Ternes N, Nivens MC, Penn J, Lopez A, Reid JG, Overton J, Shuldiner AR, Abecasis G, Baras A, Paulding C. UGT1A1 genetic variants are associated with increases in bilirubin levels in rheumatoid arthritis patients treated with sarilumab. THE PHARMACOGENOMICS JOURNAL 2022; 22:160-165. [PMID: 35149777 PMCID: PMC9151390 DOI: 10.1038/s41397-022-00269-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 12/16/2021] [Accepted: 01/24/2022] [Indexed: 11/09/2022]
Abstract
Sarilumab is a human monoclonal antibody against interleukin (IL)-6Rα that has been approved for the treatment of adult patients with moderately to severely active rheumatoid arthritis (RA) and an inadequate response or intolerance to one or more disease-modifying antirheumatic drugs (DMARDs). Mild liver function test abnormalities have been observed in patients treated with sarilumab. We describe a genome-wide association study of bilirubin elevations in RA patients treated with sarilumab. Array genotyping and exome sequencing were performed on DNA samples from 1075 patients. Variants in the UGT1A1 gene were strongly associated with maximum bilirubin elevations in sarilumab-treated patients (rs4148325; p = 2.88 × 10−41) but were not associated with aminotransferase elevations. No other independent loci showed evidence of association with bilirubin elevations after sarilumab treatment. These findings suggest that most bilirubin increases during sarilumab treatment are related to genetic variation in UGT1A1 rather than underlying liver injury.
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46
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LI Q, SUN T, ZHANG H, LIU W, XIAO Y, SUN H, YIN W, YAO Y, GU Y, LIU Y, YI F, WANG Q, YU J, CAO B, LIANG L. Characteristics and Clinical Implication of UGT1A1 Heterozygous Mutation in Tumor. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2022; 25:137-146. [PMID: 35340156 PMCID: PMC8976199 DOI: 10.3779/j.issn.1009-3419.2022.101.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The literature recommends that reduced dosage of CPT-11 should be applied in patients with UGT1A1 homozygous mutations, but the impact of UGT1A1 heterozygous mutations on the adverse reactions of CPT-11 is still not fully clear. METHODS A total of 107 patients with UGT1A1 heterozygous mutation or wild-type, who were treated with CPT-11 from January 2018 to September 2021 in Peking University Third Hospital, were retrospectively enrolled. The adverse reaction spectra of patients with UGT1A1*6 and UGT1A1*28 mutations were analyzed. Adverse reactions were evaluated according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) 5.0. The efficacy was evaluated according to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. The genotypes of UGT1A1*6 and UGT1A1*28 were detected by digital fluorescence molecular hybridization. RESULTS There were 43 patients with UGT1A1*6 heterozygous mutation, 26 patients with UGT1A1*28 heterozygous mutation, 8 patients with UGT1A1*6 and UGT1A1*28 double heterozygous mutations, 61 patients with heterozygous mutation at any gene locus of UGT1A1*6 and UGT1A1*28. Logistic regression analysis showed that the presence or absence of vomiting (P=0.013) and mucositis (P=0.005) was significantly correlated with heterozygous mutation of UGT1A1*28, and the severity of vomiting (P<0.001) and neutropenia (P=0.021) were significantly correlated with heterozygous mutation of UGT1A1*6. In colorectal cancer, UGT1A1*6 was significantly correlated to diarrhea (P=0.005), and the other adverse reactions spectrum was similar to that of the whole patient cohort, and efficacy and prognosis were similar between patients with different genotypes and patients treated with reduced CPT-11 dosage or not. CONCLUSIONS In clinical use, heterozygous mutations of UGT1A1*6 and UGT1A1*28 are related to the risk and severity of vomiting, diarrhea, neutropenia and mucositis in patients with Pan-tumor and colorectal cancer post CPT-11 therpy. In colorectal cancer, UGT1A1*6 is significantly related to diarrhea post CPT-11 use, efficacy and prognosis is not affected by various genotypes or CPT-11 dosage reduction.
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Affiliation(s)
- Qian LI
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Tao SUN
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Hua ZHANG
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - Wei LIU
- Department of Pharmacy, Peking University Third Hospital, Beijing 100191, China
| | - Yu XIAO
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Hongqi SUN
- Department of Pharmacy, Peking University Third Hospital, Beijing 100191, China
| | - Wencheng YIN
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Yanhong YAO
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Yangchun GU
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Yan'e LIU
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Fumei YI
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Qiqi WANG
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Jinyu YU
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Baoshan CAO
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China
| | - Li LIANG
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing 100191, China,Li LIANG, E-mail:
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Sidorenko DV, Nazarov VD, Volnikova EG, Kondrasheva EA, Peshkova NG, Kovaleva IS, Kokorina OS, Svatkovskaya IB, Lapin SV. Dependence of blood biochemical parameters on various genotypes of the UGT1A1 gene associated with gilbert's syndrome. Klin Lab Diagn 2022; 67:69-75. [PMID: 35192750 DOI: 10.51620/0869-2084-2022-67-2-69-75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Diagnosis of Gilbert's syndrome is based on the detection of homozygous carriage of an additional TA-repeat in the promoter of the UGT1A1 gene, leading to a decrease in the activity of the UGT enzyme. No large studies have been done in the Russian Federation on the prevalence of carriage of Gilbert's syndrome, as well as the biochemical and molecular profile of such patients. The aim of the study is to evaluate biochemical and molecular genetic parameters in patients with Gilbert's syndrome in Russia. The study included 124 healthy volunteers (group 1) and 5650 patients with suspected Gilbert's syndrome (group 2). The number of TA-repeats of the promoter region of the UGT1A1 gene was determined by the method of fragment analysis for all participants. The following biochemical parameters were analyzed for 299 patients from group 2: the level of bilirubin and its fractions, AST, ALT, cholesterol and LDL. In group 1 the prevalence of genotype (TA)6/(TA)6 was 39,52%, (TA)6/(TA)7 - 53,23%, (TA)7/(TA)7 - 7,26%, no rare forms were found. In group 2 the prevalence of genotype (TA)6/(TA)6 was 6,04%, (TA)6/(TA)7 - 20,05%, (TA)7/(TA)7 - 73,7%, rare alleles - 0,2%. Rare alleles included (TA)5/(TA)6, (TA)5/(TA)7, (TA)6/(TA)8 and (TA)7/(TA)8, as well as a new genotype not described in the literature previously - (TA)7/(TA)9. When assessing the level of total bilirubin and its fractions, a difference was revealed between the genotype of Gilbert's syndrome (TA)7/(TA)7 and the reference genotype (TA)6/(TA)6, and between genotypes (TA)7/(TA)7 and (TA)6/(TA)7. A significant increase in total bilirubin was demonstrated in carriers of a larger number of TA-repeats. There was no significant difference in the concentration of ALT, AST, cholesterol or LDL between different genotypes.The number of TA-repeats of the UGT1A1 gene affects the increase of total bilirubin and its indirect fraction, including the cases of rare allelic variants (TA≤5, TA≥8), but not the activity of ALT and AST and the lipid profile.
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Affiliation(s)
| | - V D Nazarov
- Department of Molecular Medicine of First Pavlov State Medical University of St. Petersburg
| | - E G Volnikova
- Department of Molecular Medicine of First Pavlov State Medical University of St. Petersburg
| | | | - N G Peshkova
- Limited Liability Company «Independent laboratory INVITRO»
| | - I S Kovaleva
- Limited Liability Company «Independent laboratory INVITRO»
| | - O S Kokorina
- Limited Liability Company «Independent laboratory INVITRO»
| | | | - S V Lapin
- Department of Molecular Medicine of First Pavlov State Medical University of St. Petersburg
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48
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Kubba MA, Ali Marhoon A, Abbas Kadhum R. Study single nucleotide polymorphism in Promoter region of UGT1A1 Gene in Iraqi Patients with Gilbert's syndrome. BIONATURA 2022. [DOI: 10.21931/rb/2022.07.01.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This study aimed to detect genetic variants of the UGT1A1 gene in patients with Gilbert's syndrome. To detect this, primers were designed; PCR and direct sequencing were done for the promoter area of the gene as a diagnostic tool for the detection of any polymorphism. Variation and polymorphism were detected within the promoter mutants of the UDP glycosyltransferase _UGT1A1 gene that causes hyperbilirubinemia in a group of Iraqi patients compared with a group of the normal healthy individual as controls. The patients with hyperbilirubinemia in this study were 30 in which the total bilirubin level was more than 12 mg/dl serum; they included 25 males and 5 females, while the control group consisted of 20 healthy individuals. This study was carried out from September 2019 till April 2021. The result displayed high occurrence of Gilbert syndrome within male patients than in females, and regarding the analyses of mutation of bilirubin UDP glycosyltransferase _UGT1A1 gene, it is clear that the genotypic distribution of variation among the hyperbilirubinemia patients included all 30 patients, while SNP was detected in 18 patients out of 30 which indicate that the UGT1A1 gene mutation was a likely risk factor for the development of hyperbilirubinemia related Gilbert syndrome in Iraq. The homozygous and heterozygous polymorphisms A/G inside the promoter region of the UGT1A1 gene were effectively identified by sequencing. Our finding suggests that TA repeats and allele of UGT1A1 polymorphism A/G are associated with Gilbert's syndrome and act as genetic markers of this disease in Iraqi patients. To analyze data and sequence variation in gene, generous software was used after amplifying the gene. All processes include DNA extraction, PCR amplification, sequencing, and assembly.
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Affiliation(s)
- Marwa A. Kubba
- Department of Biology, Al-Rasheed University College, Baghdad, Iraq
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49
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Wang Z, Wang X, Wang Z, Fan X, Yan M, Jiang L, Xia Y, Cao J, Liu Y. Prediction of Drug-Drug Interaction Between Dabrafenib and Irinotecan via UGT1A1-Mediated Glucuronidation. Eur J Drug Metab Pharmacokinet 2022; 47:353-361. [PMID: 35147853 DOI: 10.1007/s13318-021-00740-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Dabrafenib and irinotecan are two drugs that can be utilized to treat melanoma. A previous in vivo study has shown that dabrafenib enhances the antitumor activity of irinotecan in a xenograft model with unclear mechanism. OBJECTIVES This study aims to investigate the inhibition of dabrafenib on SN-38 (the active metabolite of irinotecan) glucuronidation, trying to elucidate the possible mechanism underlying the synergistic effect and to provide a basis for further development and optimization of this combination in clinical research. METHODS Recombinant human uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) and human liver microsomes (HLMs) were employed to catalyze the glucuronidation of SN-38 in vitro. Inhibition kinetic analysis and quantitative prediction study were combined to predict drug-drug interaction (DDI) potential in vivo. RESULTS Dabrafenib noncompetitively inhibited SN-38 glucuronidation in pooled HLMs and recombinant UGT1A1 with unbound inhibitor constant (Ki,u) values of 12.43 ± 0.28 and 3.89 ± 0.40 μM, respectively. Based on the in vitro Ki,u value and estimation of kinetic parameters, dabrafenib administered at 150 mg twice daily may result in about a 1-2% increase in the area under the curve (AUC) of SN-38 in vivo. However, the ratios of intra-enterocyte concentration of dabrafenib to Ki,u ([I]gut/Ki,u) are 2.73 and 8.72 in HLMs and recombinant UGT1A1, respectively, indicating a high risk of intestinal DDI when dabrafenib was used in combination with irinotecan. CONCLUSION Dabrafenib is a potent noncompetitive inhibitor of UGT1A1 and may bring potential risk of DDI when combined with irinotecan.
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Affiliation(s)
- Zhe Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Xiaoyu Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Zhen Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Xiaoyu Fan
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Mingrui Yan
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Lili Jiang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Yangliu Xia
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China
| | - Jun Cao
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian, 116044, China.
| | - Yong Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin, 124221, China.
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50
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Aronica L, Ordovas JM, Volkov A, Lamb JJ, Stone PM, Minich D, Leary M, Class M, Metti D, Larson IA, Contractor N, Eck B, Bland JS. Genetic Biomarkers of Metabolic Detoxification for Personalized Lifestyle Medicine. Nutrients 2022; 14:nu14040768. [PMID: 35215417 PMCID: PMC8876337 DOI: 10.3390/nu14040768] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 01/19/2023] Open
Abstract
Metabolic detoxification (detox)—or biotransformation—is a physiological function that removes toxic substances from our body. Genetic variability and dietary factors may affect the function of detox enzymes, thus impacting the body’s sensitivity to toxic substances of endogenous and exogenous origin. From a genetic perspective, most of the current knowledge relies on observational studies in humans or experimental models in vivo and in vitro, with very limited proof of causality and clinical value. This review provides health practitioners with a list of single nucleotide polymorphisms (SNPs) located within genes involved in Phase I and Phase II detoxification reactions, for which evidence of clinical utility does exist. We have selected these SNPs based on their association with interindividual variability of detox metabolism in response to certain nutrients in the context of human clinical trials. In order to facilitate clinical interpretation and usage of these SNPs, we provide, for each of them, a strength of evidence score based on recent guidelines for genotype-based dietary advice. We also present the association of these SNPs with functional biomarkers of detox metabolism in a pragmatic clinical trial, the LIFEHOUSE study.
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Affiliation(s)
- Lucia Aronica
- Department of Nutrition Science, Metagenics, Inc., Aliso Viejo, CA 92656, USA; (I.A.L.); (B.E.)
- Stanford Prevention Research Center, Department of Medicine, Stanford University, California, CA 94305, USA
- Correspondence:
| | - Jose M. Ordovas
- Nutrition and Genomics Laboratory, Jean Mayer USDA Human Nutrition Center on Aging, Tufts University, Boston, MA 02111, USA;
- Nutritional Genomics and Epigenomics Group, IMDEA-Food, 28049 Madrid, Spain
- University Camilo José Cela, Villafranca del Castillo, 28692 Madrid, Spain
| | | | - Joseph J. Lamb
- Personalized Lifestyle Medicine Center, Gig Harbor, WA 98332, USA; (J.J.L.); (P.M.S.); (D.M.)
| | - Peter Michael Stone
- Personalized Lifestyle Medicine Center, Gig Harbor, WA 98332, USA; (J.J.L.); (P.M.S.); (D.M.)
- Institute for Functional Medicine Federal Way, Washington, DC 98003, USA; (D.M.); (M.C.)
- Ashland Comprehensive Family Medicine-Stone Medical, Ashland, OR 97520, USA
- Office of Personalized Health and Well-Being, Medical College of Georgia, AU/UGA Medical Partnership, Athens, GA 30606, USA
| | - Deanna Minich
- Institute for Functional Medicine Federal Way, Washington, DC 98003, USA; (D.M.); (M.C.)
- Human Nutrition and Functional Medicine, University of Western States, Portland, OR 97213, USA
| | | | - Monique Class
- Institute for Functional Medicine Federal Way, Washington, DC 98003, USA; (D.M.); (M.C.)
- The Center for Functional Medicine, Stamford, CT 06905, USA
| | - Dina Metti
- Personalized Lifestyle Medicine Center, Gig Harbor, WA 98332, USA; (J.J.L.); (P.M.S.); (D.M.)
| | - Ilona A. Larson
- Department of Nutrition Science, Metagenics, Inc., Aliso Viejo, CA 92656, USA; (I.A.L.); (B.E.)
| | | | - Brent Eck
- Department of Nutrition Science, Metagenics, Inc., Aliso Viejo, CA 92656, USA; (I.A.L.); (B.E.)
| | - Jeffrey S. Bland
- Personalized Lifestyle Medicine Institute, Bainbridge Island, WA 98110, USA;
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