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Moghadam AA, Manafzadeh AR, Dajliry K, Ramezan F, Nikoonia MR, Abdolkarimi B, Hamidpour M, Tabibian S. Genotype-phenotype analyses of Iranian patients with hemophilia B (Leyden -) and hemophilia B (Leyden +): A single-center study. Transfus Apher Sci 2024; 63:103962. [PMID: 38964254 DOI: 10.1016/j.transci.2024.103962] [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: 04/16/2024] [Revised: 06/15/2024] [Accepted: 06/19/2024] [Indexed: 07/06/2024]
Abstract
BACKGROUND There is a high prevalence of inherited bleeding disorders in Iran, such as hemophilia A (HA) and hemophilia B (HB). This study aimed to analyze the molecular and clinical profiles of patients with HB. METHODS A single-center study was conducted among patients with severe HB between March 20, 2000, and June 31, 2023. The polymerase chain reaction (PCR) amplification was used for all of the major regions, such as the promoter, the exons, the adjacent intronic regions, and the untranslated regions of the F9 gene. Finally, Sanger sequencing was performed on the PCR products. RESULTS A total of 111 HB patients (17 with HB [Leyden +] and 94 with HB [Leyden -]) were enrolled in this study. Among 94 patients with HB (Leyden -), 59 (62.8 %) had missense, 21 (22.3 %) had nonsense, and 8 (8.5 %) had frameshift mutations. Moreover, the most frequent pathogenic variant in HB (Leyden +) was c.-17 A>G in this study. CONCLUSION The results of this study confirm that HB is caused by a wide range of molecular defects in Iran. Thus, by knowing the genotypes and phenotypes, we would be able to stratify the patients which is important in terms of their management and outcome.
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Affiliation(s)
- Arash Ahmadfard Moghadam
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Reza Manafzadeh
- Department of Internal Medicine, Albert Szent-Györgyi Health Centre, University of Szeged, Szeged 6726, Hungary
| | - Khadijeh Dajliry
- Blood Disease Research Center (BDRC), Iranian Comprehensive Hemophilia Care Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Farahnaz Ramezan
- Blood Disease Research Center (BDRC), Iranian Comprehensive Hemophilia Care Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Mohammad Reza Nikoonia
- Blood Disease Research Center (BDRC), Iranian Comprehensive Hemophilia Care Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Babak Abdolkarimi
- Pediatric Hematology-Oncology, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mohsen Hamidpour
- Hematopoietic Stem Cell Research Centre-Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Shadi Tabibian
- Blood Disease Research Center (BDRC), Iranian Comprehensive Hemophilia Care Center, Iran University of Medical Sciences (IUMS), Tehran, Iran.
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Dubé E, Gauthier J, Merlen C, Bonnefoy A, Couture F, Lillicrap D, Rivard GE. The diagnosis of a haemophilia A carrier over 2 decades. Haemophilia 2020; 27:e133-e136. [PMID: 32526814 DOI: 10.1111/hae.14073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/08/2020] [Accepted: 05/20/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Evemie Dubé
- Division of Hematology-Oncology, Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Julie Gauthier
- Molecular Diagnostic Laboratory, CHU Sainte-Justine, Montreal, QC, Canada.,Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Clémence Merlen
- Division of Hematology-Oncology, Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Arnaud Bonnefoy
- Division of Hematology-Oncology, Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Francoise Couture
- Molecular Diagnostic Laboratory, CHU Sainte-Justine, Montreal, QC, Canada
| | - David Lillicrap
- Department of Medicine, Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - Georges-Etienne Rivard
- Division of Hematology-Oncology, Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
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van Luttikhuizen JL, Bublitz J, Schubert S, Schmidt G, Hofmann W, Morlot S, Buurman R, Auber B, Schlegelberger B, Steinemann D. From a variant of unknown significance to pathogenic: Reclassification of a large novel duplication in BRCA2 by high-throughput sequencing. Mol Genet Genomic Med 2019; 8:e1045. [PMID: 31724318 PMCID: PMC7506983 DOI: 10.1002/mgg3.1045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/06/2019] [Accepted: 10/22/2019] [Indexed: 12/14/2022] Open
Abstract
Background Germline mutations in BRCA1/2 significantly contribute to hereditary breast and/or ovarian cancer. Here, we report a novel BRCA2 duplication of exons 22–24 in a female patient with bilateral breast cancer at age 35 and 44. The duplicated region was initially detected by gene panel sequencing and multiplex ligation‐dependent probe amplification. However, the location and orientation of the duplicated region was unknown. Therefore, it was initially classified as a variant of unknown significance. Methods The spatial directional characterization of the BRCA2 duplication was achieved by targeted enrichment of the whole‐genomic BRCA2 locus including exons and introns, and subsequent high‐throughput sequencing. Subsequently, bioinformatics tools and a breakpoint‐spanning PCR were used for identification of location and orientation of the duplication. Results The duplicated region was arranged in tandem and direct orientation (Chr13(GRCh37):g.32951579_32960394dup; NM_000059.3 c.8754 + 651_9256+6112dup p.(Ala3088Phefs*3)). It is predicted to result in a frameshift and a premature stop codon likely triggering nonsense‐mediated mRNA decay. Consequently, it is regarded as pathogenic. Conclusion This case study demonstrates that a comprehensive characterization of a structural variant by breakpoint assessment is crucial for its correct classification. Therefore, sequencing strategies including non‐coding regions might be necessary to identify cancer predispositions in affected families.
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Affiliation(s)
| | - Janin Bublitz
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Stephanie Schubert
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Gunnar Schmidt
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Winfried Hofmann
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Susanne Morlot
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Reena Buurman
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Bernd Auber
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | | | - Doris Steinemann
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
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Lv X, Li T, Li H, Liu HY, Wang Z, Guo ZP. Genetic analysis of a hemophilia B family with a novel F9 gene mutation: A STROBE-compliant article. Medicine (Baltimore) 2019; 98:e15688. [PMID: 31124946 PMCID: PMC6571360 DOI: 10.1097/md.0000000000015688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
At present, there are no effective methods for the treatment of hemophilia B, and it has high mortality and disability. Therefore, it is very important for the carriers to carry out genetic counseling and make prenatal diagnosis. In this study, we made gene and prenatal diagnoses in a family with a novel F9 gene mutation, and report a novel F9 gene mutation.All exon sequences and flanking sequences of F9 gene were analyzed by Sanger sequencing in the proband; and then according to the F9 gene mutation in the proband, the F9 gene sequencing was performed on the family members. Based on the above results, the pathogenic mutation in F9 gene was finally identified, which was used for prenatal diagnosis.Sanger sequencing revealed c.1232G>C [p.Ser411Thr] mutation in F9 gene in the proband. c.1232G>C heterozygous mutation was also found in the proband's mother and grandmother, but male family members without hemophilia B had no this mutation. The analyses of amniotic fluid samples indicated positive sex-determining region on Y chromosome (SRY), and no c.1232G>C [p.Ser411Thr] mutation in F9 gene.We identified a pathogenic mutation in F9 gene in the family, made a prenatal diagnosis for the female carrier and reported a novel F9 gene mutation.
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Affiliation(s)
- Xue Lv
- Department of Health Management, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University
| | - Tao Li
- Medicine laboratory, Fuwai Central China Cardiovascular Hospital, the Heart Center of Henan Provincial People's Hospital
- Henan Provincial People's Hospital, Zhengzhou
| | - Hao Li
- Department of Plastic Surgery
| | | | - Zhen Wang
- Department of Hematology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University
| | - Zhi-ping Guo
- Henan Luoyang Orthopaedics Institute
- Fuwai Central China Cardiovascular Hospital, Zhengzhou, China
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He X, Xiong Z, Shen N, Lu Y, Wang X. Performance of next-generation sequencing in the detection of large exon deletion in patients of haemophilia A. Haemophilia 2018; 24:e296-e300. [PMID: 30004153 DOI: 10.1111/hae.13584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2018] [Indexed: 11/29/2022]
Affiliation(s)
- X. He
- Department of Laboratory Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan 430030 China
| | - Z. Xiong
- Department of Laboratory Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan 430030 China
| | - N. Shen
- Department of Laboratory Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan 430030 China
| | - Y. Lu
- Department of Laboratory Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan 430030 China
| | - X. Wang
- Department of Laboratory Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan 430030 China
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Gong XQ, Yang XH, Qiao LL, Cheng YJ, Zhou WJ. [Rapid detection of alpha-globin gene ααα anti-3.7 triplets with droplet digital PCR]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:1265-1269. [PMID: 28951374 PMCID: PMC6765481 DOI: 10.3969/j.issn.1673-4254.2017.09.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To establish a rapid method for detection of alpha-globin gene αααanti-3.7 based on droplet digital PCR (ddPCR) technique. METHODS The differential sequence between the X1 and Y1 box of α1 gene was selected as the amplicon of the target gene with β-actin as the reference gene. The specific primers and TaqMan probes were designed, and then a quantitative method for detecting the copy number was established based on ddPCR technique. The sensitivity and accuracy of the method were evaluated by detecting 28 samples of known genotypes and 60 clinical samples. RESULTS The ddPCR-based method accurately identified the genotypes of all the 28 samples with known genotypes and detected 5 cases of αα/αααanti-3.7 from the 60 clinical samples, and the results were verified by MLPA. The sensitivity and accuracy of this method were both 100% for detecting alpha-globin gene αααanti-3.7. CONCLUSION This ddPCR-based method for detecting αααanti-3.7 triplet can be applied for population screening and in routine clinical molecular diagnosis with simple operation, rapid analysis and accurate results.
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Affiliation(s)
- Xiao-Qian Gong
- Shaoguan Maternal and Child Healthcare Hospital, Shaoguan 512026, China.E-mail:
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