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Priglinger CS, Rudolph G, Schmid I, Mazzola P, Haack TB, Reith M, Stingl K, Weisschuh N. Characterization of a novel non-canonical splice site variant (c.886-5T>A) in NBAS and description of the associated phenotype. Mol Genet Genomic Med 2023; 11:e2120. [PMID: 36479642 PMCID: PMC10009903 DOI: 10.1002/mgg3.2120] [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: 09/02/2022] [Revised: 10/28/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Biallelic pathogenic variants in the neuroblastoma-amplified sequence (NBAS) gene manifest in a broad spectrum of disorders, including, but not limited to recurrent acute liver failure, skeletal dysmorphism, susceptibility to infections, and SOPH syndrome with its cardinal symptoms of short stature, optic atrophy, and Pelger-Huët anomaly. We aimed to present clinical and genetic characteristics of two sisters (20 and 15 years old) who were diagnosed with optic atrophy and cone dystrophy in childhood. Genome sequencing revealed two novel variants in NBAS in compound heterozygous state in both sisters, namely a 1-bp deletion predicted to result in a premature termination codon (c.5104del; p.(Met1702*)), and a non-canonical splice site variant of unclear significance (c.886-5T>A; p.?). RESULTS Clinical examination and history revealed cone dystrophy, optic atrophy, and Pelger-Huët anomaly, but no short stature, recurrent acute liver failure, or susceptibility to infections. RNA analysis revealed that the c.886-5T>A variant results in two aberrant transcripts that are predicted to lead to in frame amino acid changes in the β-propeller region of the protein. CONCLUSION We hypothesize that the phenotype of our subjects, which appears to be at the end of the spectrum of NBAS-related disorders, could be explained by residual protein function mediated by the non-canonical splice site variant c.886-5T>A. Our study contributes to the existing knowledge on the genotypic and phenotypic spectrum of NBAS-related disorders.
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Affiliation(s)
- Claudia S Priglinger
- University Eye Hospital, Ludwig Maximilians University of Munich, Munich, Germany
| | - Günter Rudolph
- University Eye Hospital, Ludwig Maximilians University of Munich, Munich, Germany
| | - Irene Schmid
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, Dr. von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Pascale Mazzola
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Tobias B Haack
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany.,Centre for Rare Diseases, University of Tübingen, Tübingen, Germany
| | - Milda Reith
- Centre for Ophthalmology, University Eye Hospital, University of Tübingen, Tübingen, Germany
| | - Katarina Stingl
- Centre for Ophthalmology, University Eye Hospital, University of Tübingen, Tübingen, Germany
| | - Nicole Weisschuh
- Centre for Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
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Fedets OM, Dmytruk KV, Adaszek L, Kurlyak IM, Dmytruk OV, Lisiecka U, Winiarczyk S. Polymorphism of glutathione S-transferase P1 of dogs with mammary tumours. Vet Comp Oncol 2023; 21:270-278. [PMID: 36808425 DOI: 10.1111/vco.12885] [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: 07/15/2022] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 02/23/2023]
Abstract
Mammary tumours constitute more than half of neoplasms in female dogs from different countries. Genome sequences are associated with cancer susceptibility but there is little information available about genetic polymorphisms of glutathione S-transferase P1 (GSTP1) in canine cancers. The aim of this study was to find single nucleotide polymorphisms (SNPs) in GSTP1 of dogs (Canis lupus familiaris) with mammary tumours compared to healthy dogs and to determine the association between GSTP1 polymorphisms and the occurrence of these tumours. The study population included 36 client-owned female dogs with mammary tumours and 12 healthy female dogs, with no previous diagnosis of cancer. DNA was extracted from blood and amplified by PCR assay. PCR-products were sequenced by Sanger method and analysed manually. The 33 polymorphisms were found in GSTP1: 1 coding SNP (exon 4), 24 non-coding SNPs (9 in exon 1), 7 deletions and 1 insertion. The 17 polymorphisms have been found in introns 1, 4, 5 and 6. The dogs with mammary tumours have significant difference from healthy in SNPs I4 c.1018 + 123 T > C (OR 13.412, 95%CI 1.574-114.267, P = .001), I5 c.1487 + 27 T > C (OR 10.737, 95%CI 1.260-91.477, P = .004), I5 c.1487 + 842 G > C (OR 4.714, 95% CI 1.086-20.472, P = .046) and I6 c.2481 + 50 A > G (OR 12.000, 95% CI 1.409-102.207, P = .002). SNP E5 c.1487 T > C and I5 c.1487 + 829 delG also differed significantly (P = .03) but not to the confidence interval. The study, for the first time, showed a positive association of SNPs in GSTP1 with mammary tumours of dogs, that can possibly be used to predict the occurrence of this pathology.
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Affiliation(s)
- Oleh M Fedets
- Department of Biological and General Chemistry, Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Lviv, Ukraine
| | - Kostyantyn V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - Lukasz Adaszek
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Iryna M Kurlyak
- Department of Biological and General Chemistry, Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Lviv, Ukraine
| | - Olena V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology National Academy of Sciences of Ukraine, Lviv, Ukraine
- Department of Biotechnology and Microbiology, University of Rzeszow, Rzeszów, Poland
| | - Urszula Lisiecka
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Stanislaw Winiarczyk
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
- National Veterinary Research Institute, Pulawy, Poland
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Ahmad Z, Liaqat R, Palander O, Bilal M, Zeb S, Ahmad F, Jawad Khan M, Umair M. Genetic overview of postaxial polydactyly: Updated classification. Clin Genet 2023; 103:3-15. [PMID: 36071556 DOI: 10.1111/cge.14224] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/26/2022] [Accepted: 09/01/2022] [Indexed: 12/13/2022]
Abstract
Polydactyly or polydactylism, also known as a hyperdactyly, is a congenital limb defect with various morphologic phenotypes. Apart from physical and functional impairments, the presence of polydactyly is an indication of an underlying syndrome in the newborn. Usually, it follows as an autosomal dominant/recessive inheritance pattern with defects in the limb development's anteroposterior patterning. Although mutations in several genes have been associated with polydactyly; however, the exact underlying cause, pathways, and disease mechanisms are still unexplored, thus making it of multi-factorial origin. Polydactyly is divided into three subtypes; radial, ulnar, and central polydactyly. So far, 11 loci (PAPA1-PAPA11) and seven human genes have been reported to cause non-syndromic postaxial polydactyly in humans, including the ZNF141, GLI3, IQCE, GLI1, FAM92A1, KIAA0825, and DACH1. In this review, we discuss emerging evidences of clinical and molecular characterization of polydactyly types in term of the involvement of newly associated genes and loci for non-syndromic postaxial polydactyly, and how these might impact our understanding of the genetic mechanisms and molecular etiology involved in the cause of polydactyly.
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Affiliation(s)
- Zaheer Ahmad
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Romana Liaqat
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan
| | - Oliva Palander
- Faculty of Medicine, Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada.,Cell Biology Program, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Muhammad Bilal
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shah Zeb
- Institute for Advanced Study, Shenzhen University, Shenzhen, People's Republic of China.,College of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Farooq Ahmad
- Department of Biochemistry, Women University Swabi, Swabi, Pakistan
| | - Muhammad Jawad Khan
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs (MNGH), Riyadh, Saudi Arabia.,Department of Life Sciences, School of Science, University of Management and Technology (UMT), Lahore, Pakistan
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Niu Z, Lai Y, Zhou W, Liu L, Tan S, He G, Li J, Tang F, Su Y, Xu Y, Liu L, Xie L, Fang Q, Tang A. Analysis of the clinical and genetic characteristics of a Chinese family with osteogenesis imperfecta type I. Mol Genet Genomic Med 2022; 10:e2019. [PMID: 35855543 PMCID: PMC9482389 DOI: 10.1002/mgg3.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/02/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Osteogenesis imperfecta type I (OI-I) is a rare genetic disorder characterized by skeletal deformity, bone fragility, blue sclerae, dentinogenesis imperfecta, and hearing loss. The current study aimed to confirm the clinical diagnosis and genetic cause of OI-I in a four-generation Chinese family. METHODS Clinical investigation and pedigree analysis were conducted to characterize the phenotypic manifestations of a Chinese family with OI-I. Follow-up audiometry and imaging tests were used to evaluate the postoperative outcomes of stapes surgery in the proband with otosclerosis. Whole-exome sequencing (WES) and Sanger sequencing were used to identify the pathogenic gene variants and for cosegregating analysis. RESULTS We described in detail the clinical features of the collected family with autosomal dominant OI-I, and firstly identified a pathogenic splicing variant (c.2344-1G>T) in intron 33 of COL1A1 in a Chinese family. The molecular analysis suggested that the mutation might cause splice site changes that result in a loss of gene function. The proband, who suffered from otosclerosis and presented two-side middle-severe conductive hearing loss, benefitted significantly from successive bilateral middle ear surgery. CONCLUSIONS The diagnosis of OI-I in a Chinese family was established by clinical and genetic investigation. A heterozygous pathogenic splicing variant in COL1A1 was directly responsible for the bone fragility and hearing loss of this family. Otosclerosis surgery should be suggested to rehabilitate conductive hearing impairment in OI patients.
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Affiliation(s)
- Zhijie Niu
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Yongjing Lai
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Wenwen Zhou
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Lingyuan Liu
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Songhua Tan
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Guangyao He
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Jingyu Li
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Fen Tang
- Department of OphthalmologyThe People's Hospital of Guangxi Zhuang Autonomous regionNanningChina
| | - Yupei Su
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Yanglong Xu
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Lei Liu
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Lihong Xie
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Qin Fang
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Anzhou Tang
- Department of Otolaryngology‐Head and Neck SurgeryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
- Regional Key Laboratory of Early Prevention and Treatment of High‐Rise TumorsNanningChina
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Cerón-Rodríguez M, Castillo-García D, Acosta-Rodríguez-Bueno CP, Aguirre-Hernández J, Murillo-Eliosa JR, Valencia-Mayoral P, Escobar-Sánchez A, Salgado-Loza JL. Classic infantile-onset Pompe disease with histopathological neurologic findings linked to a novel GAA gene 4 bp deletion: A case study. Mol Genet Genomic Med 2022; 10:e1957. [PMID: 35532199 PMCID: PMC9266604 DOI: 10.1002/mgg3.1957] [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: 11/15/2021] [Revised: 02/24/2022] [Accepted: 03/23/2022] [Indexed: 11/12/2022] Open
Abstract
Pompe disease (PD) is an autosomal recessive disorder by a deficiency of acid α‐glucosidase (GAA) with intralysosomal glycogen accumulation in multiple tissues. We present the case of a 5‐month‐old male with hypertrophic cardiomyopathy, hypotony, feeding difficulties, and oxygen requirement since birth. At 3 months of age, he develops heart failure, respiratory impairment, and neurological deterioration. The echocardiogram revealed concentric hypertrophic cardiomyopathy with left‐diastolic dysfunction. We found increased creatine‐phosphokinase, lactate dehydrogenase, and urinary glucose tetrasaccharide levels, 50% of PAS‐positive vacuolated lymphocytes in the peripheral blood smear, and low GAA activity. Sequencing of coding exons and flanking intronic sequences revealed a novel homozygous 4 bp deletion in exon 15 of the GAA gene (c.2066_2069delAGCC/p.Glu689Glyfs*6). IOPD was diagnosed. At 5 months old, we started enzyme replacement therapy with an alpha‐alglucosidase of 20 mg/kg weekly and immunomodulation with intravenous immunoglobulin. He developed two cardiorespiratory arrests with subsequent neurologic deterioration, convulsive crisis, and respiratory failure and died at 9 months old. We found the usual PD hallmarks in the heart, striated muscle, and liver but also we found neuronal lesions characterized by cytoplasm vacuolization with PAS‐positive granules in the central nervous system and myenteric plexus. We describe a novel GAA gene pathogenic variant with a particular phenotype characterized by classic IOPD and neurologic histopathological findings. Enhancing the knowledge of lysosomal diseases is critical to improving the diagnosis and treatment of these patients.
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Affiliation(s)
- Magdalena Cerón-Rodríguez
- Department of Lysosomal Diseases, Hospital Infantil de México Federico Gómez, Ciudad de México, Mexico
| | - Daniela Castillo-García
- Department of Lysosomal Diseases, Hospital Infantil de México Federico Gómez, Ciudad de México, Mexico
| | | | - Jesús Aguirre-Hernández
- Laboratory of Genomics, Genetics and Bioinformatics, Department of Genetics, Hospital Infantil de México Federico Gómez, Ciudad de México, Mexico
| | | | - Pedro Valencia-Mayoral
- Department of Pathology, Hospital Infantil de México Federico Gómez, Ciudad de México, Mexico
| | - Argelia Escobar-Sánchez
- Department of Pathology, Hospital Infantil de México Federico Gómez, Ciudad de México, Mexico
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Badura-Stronka M, Hirschfeld AS, Winczewska-Wiktor A, Budzyńska E, Jakubiuk-Tomaszuk A, Piontek A, Steinborn B, Kozubski W. First case series of Polish patients with cerebrotendinous xanthomatosis and systematic review of cases from the 21st century. Clin Genet 2021; 101:190-207. [PMID: 34689324 DOI: 10.1111/cge.14079] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 12/27/2022]
Abstract
Cerebrotendinous xanthomatosis (CTX) is an inborn error of metabolism caused by recessive variants in the cytochrome P450 CYP27A1 gene. CTX is said to manifest with childhood-onset chronic diarrhea and the classic triad of juvenile-onset cataracts, Achilles tendons xanthomas, and progressive ataxia. It is currently one of the few inherited neurometabolic disorders amenable to a specific treatment. The diagnosis may be significantly delayed resulting in permanent neurological impairment. A retrospective review of the clinical characteristics and diagnostic findings in case series of six Polish patients with CTX. Additional retrospective review of symptoms and pathogenic variants of 568 CTX available cases and case series from the past 20 years. To the best of our knowledge, this is the widest review of CTX cases reported in years 2000-2021. We report the largest cohort of Polish patients ever published, with the identification of two hot-spot mutations. During the review of available 568 cases, we found significant differences in the clinical phenotypes and the localization of variants within the gene between Asian and non-Asian populations. These findings may facilitate molecular testing in the Polish and Asian populations. Invariably better screening for CTX and wider awareness is needed.
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Affiliation(s)
- Magdalena Badura-Stronka
- Department of Medical Genetics, Poznan University of Medical Sciences, Poznan, Poland.,Centers for Medical Genetics GENESIS, Poznan, Poland
| | | | | | - Edyta Budzyńska
- Central Teaching Hospital, The Medical University of Lodz, Poland
| | - Anna Jakubiuk-Tomaszuk
- Department of Pediatric Neurology and Rehabilitation, Medical University of Bialystok, Poland.,Medical Genetics Unit, Mastermed Medical Center, Poland
| | - Anita Piontek
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Barbara Steinborn
- Department of Child Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Wojciech Kozubski
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
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