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Chan TH, Zhang JE, Pirmohamed M. DPYD genetic polymorphisms in non-European patients with severe fluoropyrimidine-related toxicity: a systematic review. Br J Cancer 2024:10.1038/s41416-024-02754-z. [PMID: 38886557 DOI: 10.1038/s41416-024-02754-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 06/03/2024] [Accepted: 06/05/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Pre-treatment DPYD screening is mandated in the UK and EU to reduce the risk of severe and potentially fatal fluoropyrimidine-related toxicity. Four DPYD gene variants which are more prominently found in Europeans are tested. METHODS Our systematic review in patients of non-European ancestry followed PRISMA guidelines to identify relevant articles up to April 2023. Published in silico functional predictions and in vitro functional data were also extracted. We also undertook in silico prediction for all DPYD variants identified. RESULTS In 32 studies, published between 1998 and 2022, 53 DPYD variants were evaluated in patients from 12 countries encompassing 5 ethnic groups: African American, East Asian, Latin American, Middle Eastern, and South Asian. One of the 4 common European DPYD variants, c.1905+1G>A, is also present in South Asian, East Asian and Middle Eastern patients with severe fluoropyrimidine-related toxicity. There seems to be relatively strong evidence for the c.557A>G variant, which is found in individuals of African ancestry, but is not currently included in the UK genotyping panel. CONCLUSION Extending UK pre-treatment DPYD screening to include variants that are present in some non-European ancestry groups will improve patient safety and reduce race and health inequalities in ethnically diverse societies.
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Affiliation(s)
- Tsun Ho Chan
- Wolfson Centre for Personalised Medicine, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, 1-5 Brownlow Street, Liverpool, L69 3GL, UK
| | - J Eunice Zhang
- Wolfson Centre for Personalised Medicine, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, 1-5 Brownlow Street, Liverpool, L69 3GL, UK
| | - Munir Pirmohamed
- Wolfson Centre for Personalised Medicine, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, 1-5 Brownlow Street, Liverpool, L69 3GL, UK.
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2
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Chidiac L, Yazbeck H, Mahfouz R, Zgheib NK. Pharmacogenomics in Lebanon: current status, challenges and opportunities. THE PHARMACOGENOMICS JOURNAL 2024; 24:16. [PMID: 38778046 DOI: 10.1038/s41397-024-00336-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
Pharmacogenomics (PGx) research and applications are of utmost relevance in Lebanon considering its population genetic diversity. Moreover, as a country with regional leadership in medicine and higher education, Lebanon holds a strong potential in contributing to PGx research and clinical implementation. In this manuscript, we first review and evaluate the available PGx research conducted in Lebanon, then describe the current status of PGx practice in Lebanon while reflecting on the local and regional challenges, and highlighting areas for action, and opportunities to move forward. We specifically expand on the status of PGx at the American University of Beirut Faculty of Medicine and Medical Center as a case study and guide for the further development of local and regional comprehensive PGx research, teaching, and clinical implementation programs. We also delve into the status of PGx knowledge and education, and prospects for further advancement such as with online courses and certificates.
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Affiliation(s)
- Lorenzo Chidiac
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Hady Yazbeck
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Rami Mahfouz
- Department of Pathology and Laboratory Medicine, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Nathalie K Zgheib
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
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Azwar S, Seow HF, Abdullah M, Faisal Jabar M, Mohtarrudin N. Recent Updates on Mechanisms of Resistance to 5-Fluorouracil and Reversal Strategies in Colon Cancer Treatment. BIOLOGY 2021; 10:854. [PMID: 34571731 PMCID: PMC8466833 DOI: 10.3390/biology10090854] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/04/2020] [Accepted: 08/11/2020] [Indexed: 02/06/2023]
Abstract
5-Fluorouracil (5-FU) plus leucovorin (LV) remain as the mainstay standard adjuvant chemotherapy treatment for early stage colon cancer, and the preferred first-line option for metastatic colon cancer patients in combination with oxaliplatin in FOLFOX, or irinotecan in FOLFIRI regimens. Despite treatment success to a certain extent, the incidence of chemotherapy failure attributed to chemotherapy resistance is still reported in many patients. This resistance, which can be defined by tumor tolerance against chemotherapy, either intrinsic or acquired, is primarily driven by the dysregulation of various components in distinct pathways. In recent years, it has been established that the incidence of 5-FU resistance, akin to multidrug resistance, can be attributed to the alterations in drug transport, evasion of apoptosis, changes in the cell cycle and DNA-damage repair machinery, regulation of autophagy, epithelial-to-mesenchymal transition, cancer stem cell involvement, tumor microenvironment interactions, miRNA dysregulations, epigenetic alterations, as well as redox imbalances. Certain resistance mechanisms that are 5-FU-specific have also been ascertained to include the upregulation of thymidylate synthase, dihydropyrimidine dehydrogenase, methylenetetrahydrofolate reductase, and the downregulation of thymidine phosphorylase. Indeed, the successful modulation of these mechanisms have been the game plan of numerous studies that had employed small molecule inhibitors, plant-based small molecules, and non-coding RNA regulators to effectively reverse 5-FU resistance in colon cancer cells. It is hoped that these studies would provide fundamental knowledge to further our understanding prior developing novel drugs in the near future that would synergistically work with 5-FU to potentiate its antitumor effects and improve the patient's overall survival.
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Affiliation(s)
- Shamin Azwar
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.A.); (H.F.S.); (M.A.)
| | - Heng Fong Seow
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.A.); (H.F.S.); (M.A.)
| | - Maha Abdullah
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.A.); (H.F.S.); (M.A.)
| | - Mohd Faisal Jabar
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Norhafizah Mohtarrudin
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (S.A.); (H.F.S.); (M.A.)
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4
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Bukhari N, Alshangiti A, Tashkandi E, Algarni M, Al-Shamsi HO, Al-Khallaf H. Fluoropyrimidine-Induced Severe Toxicities Associated with Rare DPYD Polymorphisms: Case Series from Saudi Arabia and a Review of the Literature. Clin Pract 2021; 11:467-471. [PMID: 34449540 PMCID: PMC8395516 DOI: 10.3390/clinpract11030062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022] Open
Abstract
Dihydropyrimidine dehydrogenase (DPD) is the major enzyme in the catabolism of 5-Fluorouracil (5-FU) and its prodrug capecitabine. We report cases from our institute with colorectal cancer who experienced severe toxicities to standard dose 5-FU based chemotherapy. DPYD gene sequencing revealed rare different polymorphisms that prompted dose adjustments of administered 5-FU and capecitabine. To our knowledge, this is the first case series looking at DPYD polymorphisms in the Saudi Arabian population.
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Affiliation(s)
- Nedal Bukhari
- Department of Medical Oncology, King Fahad Specialist Hospital, Dammam 31444, Saudi Arabia;
- Department of Internal Medicine, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
| | - Abdulraheem Alshangiti
- Department of Medical Oncology, King Fahad Specialist Hospital, Dammam 31444, Saudi Arabia;
| | - Emad Tashkandi
- Oncology Centre, King Abdullah Medical City, Makkah 24246, Saudi Arabia;
- College of Medicine, Umm Al-Qura University, Makkah 24211, Saudi Arabia
| | - Mohammed Algarni
- Oncology Department, King Abdulaziz Medical City, Riyadh 11426, Saudi Arabia;
- King Saud bin Abdulaziz University for Health Sciences, Riyadh 11481, Saudi Arabia
| | - Humaid O. Al-Shamsi
- Department of Oncology, Burjeel Cancer Institute, Burjeel Medical City, Abu Dhabi 999041, United Arab Emirates;
- Emirates Oncology Society, Dubai 22107, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah 999041, United Arab Emirates
| | - Hamoud Al-Khallaf
- Department of Pathology and Laboratory Medicine, King Fahad Specialist Hospital, Dammam 31444, Saudi Arabia;
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Vogel WH, Minhas A, Baumrucker S. Dihydropyrimidine Dehydrogenase Deficiency: To Screen or Not to Screen? J Adv Pract Oncol 2021; 11:68-73. [PMID: 33542850 PMCID: PMC7517765 DOI: 10.6004/jadpro.2020.11.1.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
5-fluorouracil (5-FU) and its prodrug capecitabine are frequently prescribed in oncology. While usually well tolerated, toxicity can be severe, and even life-threatening. A dihydropyrimidine dehydrogenase (DPD) deficiency can cause severe toxicity. Current testing for DPD deficiency does not meet the criteria for a routine screening test prior to 5-FU therapy. A case study of a fatality secondary to capecitabine toxicity is reviewed and literature is examined regarding general screening for DPD deficiency.
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Affiliation(s)
| | - Ahmed Minhas
- East Tennessee State University, Johnson City, Tennessee
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Vivaldi C, Crucitta S, Catanese S, Cucchiara F, Arrigoni E, Pecora I, Rofi E, Fornaro L, Salani F, Massa V, Vasile E, Morganti R, Danesi R, Del Re M. Comprehensive pharmacogenetic analysis of DPYD, UGT, CDA, and ABCB1 polymorphisms in pancreatic cancer patients receiving mFOLFIRINOX or gemcitabine plus nab-paclitaxel. THE PHARMACOGENOMICS JOURNAL 2021; 21:233-242. [PMID: 33462346 DOI: 10.1038/s41397-020-00203-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 11/09/2020] [Accepted: 12/04/2020] [Indexed: 12/14/2022]
Abstract
Modified FOLFIRINOX (mFOLFIRINOX) and gemcitabine + nab-paclitaxel (GemNab) regimens represent a standard treatment in advanced pancreatic cancer (aPC). DPYD and UGT1A1 variants are relevant predictors of fluoropyrimidine and irinotecan-associated adverse events (AEs). Furthermore, data about the associations between polymorphisms in ABCB and CDA genes and GemNab-related toxicities are still controversial. The present study analyzes the association between DPYD, UGT, ABCB1, CDA variants, and AEs in aPC patients (pts) treated with mFOLFIRINOX or GemNab. Blood samples collected from 104 aPC pts treated with mFOLFIRINOX and 63 with GemNab were tested for DPYD c.1679T>G, IVS14+1G>A, c.2194G>A, c.2846A>T, UGT1A1*28, CDA c.79A>C, and ABCB1 c.1236C>T, c.2677G>T/A, c.3435C>T by real-time PCR and automatic sequencing. In mFOLFIRINOX cohort, DPYD IVS14+1GA genotype was associated with G4 hematological AEs, while the UGT1A1*28 significantly correlated with the risk of thrombocytopenia (p = 0.006). In the GemNab cohort, a significant association between CDA c.79CC and high-grade nausea was observed (p = 0.002). Moreover, the presence of at least a mutant allele in ABCB1 increased the risk of overall hematological AEs (p = 0.01), both further strengthened by the presence of CDA c.79CC (p = 0.0002). DPYD IVS14+1A allele is confirmed to be associated with fluoropyrimidine life-threatening toxicities, and UGT1A1*28 is related with a higher risk of hematologic AEs following irinotecan treatment. CDA c.79C and ABCB1 c.1236T, c.2677T/A, and c.3435T mutant alleles are predictive biomarkers of GemNab-related AEs. All these variants should be considered in aPC pts candidate to mFOLFIRINOX or GemNab treatments.
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Affiliation(s)
- Caterina Vivaldi
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Stefania Crucitta
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Silvia Catanese
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Federico Cucchiara
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Elena Arrigoni
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Irene Pecora
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Eleonora Rofi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Lorenzo Fornaro
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Francesca Salani
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Valentina Massa
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Enrico Vasile
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Riccardo Morganti
- Departmental Section of Statistical Support for Clinical Trials, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Romano Danesi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.
| | - Marzia Del Re
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Chemistry of Fluorinated Pyrimidines in the Era of Personalized Medicine. Molecules 2020; 25:molecules25153438. [PMID: 32751071 PMCID: PMC7435603 DOI: 10.3390/molecules25153438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 12/13/2022] Open
Abstract
We review developments in fluorine chemistry contributing to the more precise use of fluorinated pyrimidines (FPs) to treat cancer. 5-Fluorouracil (5-FU) is the most widely used FP and is used to treat > 2 million cancer patients each year. We review methods for 5-FU synthesis, including the incorporation of radioactive and stable isotopes to study 5-FU metabolism and biodistribution. We also review methods for preparing RNA and DNA substituted with FPs for biophysical and mechanistic studies. New insights into how FPs perturb nucleic acid structure and dynamics has resulted from both computational and experimental studies, and we summarize recent results. Beyond the well-established role for inhibiting thymidylate synthase (TS) by the 5-FU metabolite 5-fluoro-2′-deoxyuridine-5′-O-monophosphate (FdUMP), recent studies have implicated new roles for RNA modifying enzymes that are inhibited by 5-FU substitution including tRNA methyltransferase 2 homolog A (TRMT2A) and pseudouridylate synthase in 5-FU cytotoxicity. Furthermore, enzymes not previously implicated in FP activity, including DNA topoisomerase 1 (Top1), were established as mediating FP anti-tumor activity. We review recent literature summarizing the mechanisms by which 5-FU inhibits RNA- and DNA-modifying enzymes and describe the use of polymeric FPs that may enable the more precise use of FPs for cancer treatment in the era of personalized medicine.
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