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Zhang B, Zhang Y, Wu N, Li J, Liu H, Wang J. Integrated analysis of COL2A1 variant data and classification of type II collagenopathies. Clin Genet 2019; 97:383-395. [PMID: 31758797 DOI: 10.1111/cge.13680] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 11/29/2022]
Abstract
The COL2A1 gene encodes the alpha-1 chain of type II procollagen. Type II collagen, comprised of three identical alpha-1 chains, is the major component of cartilage. COL2A1 gene variants are the etiologies of genetic diseases, termed type II collagenopathies, with a wide spectrum of clinical presentations. To date, at least 460 distinct COL2A1 mutations, identified in 663 independent probands, and 21 definite disorders have been reported. Nevertheless, a well-defined genotype-phenotype correlation has not been established, and few hot spots of mutation have been reported. In this study, we analyzed data of COL2A1 variants and clinical information of patients obtained from the Leiden Open Variation Database 3.0, as well as the currently available relevant literature. We determined the characteristics of the COL2A1 variants and distributions of the clinical manifestations in patients, and identified four likely genotype-phenotype correlations. Moreover, we classified 21 COL2A1-related disorders into five categories, which may assist clinicians in understanding the essence of these complex phenotypes and prompt genetic screening in clinical practice.
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Affiliation(s)
- Boyan Zhang
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Yue Zhang
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, Changchun, China
| | - Naichao Wu
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Jianing Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, China
| | - He Liu
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Jincheng Wang
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
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Wang S, Niu Z, Wang H, Ma M, Zhang W, Fang Wang S, Wang J, Yan H, Liu Y, Duan N, Zhang X, Yao Y. De Novo Paternal FBN1 Mutation Detected in Embryos Before Implantation. Med Sci Monit 2017. [PMID: 28650953 PMCID: PMC5498129 DOI: 10.12659/msm.904546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Marfan syndrome (MFS) is an autosomal dominant disease caused by mutations in the Fibrillin (FBN)1 gene and characterized by disorders in the cardiovascular, skeletal, and visual systems. The diversity of mutations and phenotypic heterogeneity of MFS make prenatal molecular diagnoses difficult. In this study, we used pre-implantation genetic diagnosis (PGD) to identify the pathogenic mutation in a male patient with MFS and to determine whether his offspring would be free of the disease. Material/Methods The history and pedigree of the proband were analyzed. Mutation analysis was performed on the couple and immediate family members. The couple chose IVF treatment and 4 blastocysts were biopsied. PGD was carried out by targeted high-throughput sequencing of the FBN1 gene in the embryos, along with single-nucleotide polymorphism haplotyping. Sanger sequencing was used to confirm the causative mutation. Results c.2647T>C (p.Trp883Arg) was identified as the de novo likely pathogenic mutation in the proband. Whole-genome amplification and sequencing of the 3 embryos revealed that they did not carry the mutation, and 1 blastocyst was transferred back to the uterus. The amniocentesis test result analyzed by Sanger sequencing confirmed the PGD. A premature but healthy infant free of heart malformations was born. Conclusions The de novo mutation c.2647T>C (p.Trp883Arg) in FBN1 was identified in a Chinese patient with MFS. Embryos without the mutation were identified by PGD and resulted in a successful pregnancy.
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Affiliation(s)
- Shuling Wang
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland).,Medical College, Nankai University, Tianjin, China (mainland)
| | - Ziru Niu
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Hui Wang
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Minyue Ma
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Wei Zhang
- Beijing Genomics Institute Shenzhen (BGI-Shenzhen), Shenzhen, Guangdong, China (mainland)
| | - Shu Fang Wang
- Department of Blood Transfusion, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Jun Wang
- Clinical Laboratory of Beijing Genomics Institute Health, BGI-Shenzhen, Shenzhen, Guangdong, China (mainland)
| | - Hong Yan
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Yifan Liu
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Na Duan
- Medical College, Nankai University, Tianjin, China (mainland)
| | - Xiandong Zhang
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
| | - Yuanqing Yao
- Reproductive Center, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China (mainland)
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Barat-Houari M, Sarrabay G, Gatinois V, Fabre A, Dumont B, Genevieve D, Touitou I. Mutation Update for COL2A1 Gene Variants Associated with Type II Collagenopathies. Hum Mutat 2015; 37:7-15. [PMID: 26443184 DOI: 10.1002/humu.22915] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/23/2015] [Indexed: 12/19/2022]
Abstract
Mutations in the COL2A1 gene cause a spectrum of rare autosomal-dominant conditions characterized by skeletal dysplasia, short stature, and sensorial defects. An early diagnosis is critical to providing relevant patient care and follow-up, and genetic counseling to affected families. There are no recent exhaustive descriptions of the causal mutations in the literature. Here, we provide a review of COL2A1 mutations extracted from the Leiden Open Variation Database (LOVD) that we updated with data from PubMed and our own patients. Over 700 patients were recorded, harboring 415 different mutations. One-third of the mutations are dominant-negative mutations that affect the glycine residue in the G-X-Y repeats of the alpha 1 chain. These mutations disrupt the collagen triple helix and are common in achondrogenesis type II and hypochondrogenesis. The mutations resulting in a premature stop codon are found in less severe phenotypes such as Stickler syndrome. The p.(Arg275Cys) substitution is found in all patients with COL2A1-associated Czech dysplasia. LOVD-COL2A1 provides support and potential collaborative material for scientific and clinical projects aimed at elucidating phenotype-genotype correlation and differential diagnosis in patients with type II collagenopathies.
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Affiliation(s)
- Mouna Barat-Houari
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France.,Genetics & Immunopathology of Inflammatory Osteoarticular Diseases, INSERM UMR1183, Montpellier, France
| | - Guillaume Sarrabay
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France.,Genetics & Immunopathology of Inflammatory Osteoarticular Diseases, INSERM UMR1183, Montpellier, France
| | - Vincent Gatinois
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France.,University of Montpellier, Montpellier, France
| | - Aurélie Fabre
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France
| | - Bruno Dumont
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France
| | - David Genevieve
- Genetics & Immunopathology of Inflammatory Osteoarticular Diseases, INSERM UMR1183, Montpellier, France.,University of Montpellier, Montpellier, France.,Department of Medical Genetics, Reference Center for Developmental Abnormalities and Constitutional Bone Diseases, CHRU, Montpellier, France
| | - Isabelle Touitou
- Laboratory of Rare and Autoinflammatory Diseases, CHRU, Montpellier, France.,Genetics & Immunopathology of Inflammatory Osteoarticular Diseases, INSERM UMR1183, Montpellier, France.,University of Montpellier, Montpellier, France
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