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Huston LA, Husain TS, Moore JC, Organ JM, Menegaz RA, Handler EK, Gonzales LA. Morphological variability in the inner ear of mice with osteogenesis imperfecta. Anat Rec (Hoboken) 2024; 307:592-599. [PMID: 37515586 DOI: 10.1002/ar.25298] [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: 05/09/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/31/2023]
Abstract
Osteogenesis imperfecta (OI) is known to cause hearing loss in ~60% of the affected human population. While OI-related pathologies have been studied in the middle ear, the development of cochlear pathologies is less well understood. In this study, we examine OI-related pathologies of the cochlea in a mouse model of OI to (1) document variation between OI and unaffected mice, and (2) assess the intrusion of the otic capsule onto the cochlea by analyzing differences in duct volumes. Juvenile and adult OIM C57BL/6mice were compared to unaffected wildtype (WT) mice using three-dimensional models of the cochlea generated from high resolution micro-CT scans. Two-tailed Mann-Whitney U tests were then used to investigate duct volume differences both within and between the OI and WT samples. Areas of higher ossification were observed at the cochlear base in the OI sample. OI mice also had significant intraindividual differences in duct volume between right and left ears (4%-15%), an effect not observed in WT mice. WT and OI duct volumes showed a large degree of overlap, although the OIM volumes were more variable. Our findings indicate that OIM mice are likely to exhibit more asymmetry and variation in cochlear volume despite minor differences in sample cochlear volumes, possibly due to bony capsule intrusion. This suggests a potential mechanism of hearing loss, and a high potential for cochlear and otic capsule alteration in OIM mice.
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Affiliation(s)
- Lila A Huston
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
- University of the Incarnate Word School of Medicine, San Antonio, Texas, USA
| | - Tooba S Husain
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
- Arkansas College of Osteopathic Medicine, Chad, Arkansas, USA
| | - Jacob C Moore
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
- Edward Via College of Osteopathic Medicine, Monroe, Louisiana, USA
| | - Jason M Organ
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Rachel A Menegaz
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Emma K Handler
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa, USA
| | - Lauren A Gonzales
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
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Sałacińska K, Pinkier I, Rutkowska L, Chlebna-Sokół D, Jakubowska-Pietkiewicz E, Michałus I, Kępczyński Ł, Salachna D, Wieczorek-Cichecka N, Piotrowicz M, Chilarska T, Jamsheer A, Matusik P, Wilk M, Petriczko E, Giżewska M, Stecewicz I, Walczak M, Rybak-Krzyszkowska M, Lewiński A, Gach A. NGS analysis of collagen type I genes in Polish patients with Osteogenesis imperfecta: a nationwide multicenter study. Front Endocrinol (Lausanne) 2023; 14:1149982. [PMID: 37810882 PMCID: PMC10556695 DOI: 10.3389/fendo.2023.1149982] [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: 01/23/2023] [Accepted: 08/18/2023] [Indexed: 10/10/2023] Open
Abstract
Osteogenesis imperfecta (OI) is a rare genetic disorder of the connective tissue. It presents with a wide spectrum of skeletal and extraskeletal features, and ranges in severity from mild to perinatal lethal. The disease is characterized by a heterogeneous genetic background, where approximately 85%-90% of cases have dominantly inherited heterozygous pathogenic variants located in the COL1A1 and COL1A2 genes. This paper presents the results of the first nationwide study, performed on a large cohort of 197 Polish OI patients. Variants were identified using a next-generation sequencing (NGS) custom gene panel and multiplex ligation probe amplification (MLPA) assay. The following OI types were observed: 1 (42%), 2 (3%), 3 (35%), and 4 (20%). Collagen type I pathogenic variants were reported in 108 families. Alterations were observed in α1 and α2 in 70% and 30% of cases, respectively. The presented paper reports 97 distinct causative variants and expands the OI database with 38 novel pathogenic changes. It also enabled the identification of the first glycine-to-tryptophan substitution in the COL1A1 gene and brought new insights into the clinical severity associated with variants localized in "lethal regions". Our results contribute to a better understanding of the clinical and genetic aspects of OI.
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Affiliation(s)
- Kinga Sałacińska
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Iwona Pinkier
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Lena Rutkowska
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Danuta Chlebna-Sokół
- Department of Bone Metabolic Diseases, University Centre of Paediatric, Medical University of Lodz, Lodz, Poland
| | | | - Izabela Michałus
- Department of Endocrinology and Metabolic Diseases, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Łukasz Kępczyński
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Dominik Salachna
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | | | - Małgorzata Piotrowicz
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Tatiana Chilarska
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Aleksander Jamsheer
- Department of Medical Genetics, Poznan University of Medical Sciences, Poznan, Poland
| | - Paweł Matusik
- Department of Pediatrics, Pediatric Obesity and Metabolic Bone Diseases, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Małgorzata Wilk
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Disorders and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland
| | - Elżbieta Petriczko
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Disorders and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland
| | - Maria Giżewska
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Disorders and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland
| | - Iwona Stecewicz
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Disorders and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland
| | - Mieczysław Walczak
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Disorders and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland
| | | | - Andrzej Lewiński
- Department of Endocrinology and Metabolic Diseases, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
| | - Agnieszka Gach
- Department of Genetics, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland
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Zhou W, van Rooij JGJ, van de Laarschot DM, Zervou Z, Bruggenwirth H, Appelman‐Dijkstra NM, Ebeling PR, Demirdas S, Verkerk AJMH, Zillikens MC. Prevalence of Monogenic Bone Disorders in a Dutch Cohort of Atypical Femur Fracture Patients. J Bone Miner Res 2023; 38:896-906. [PMID: 37076969 PMCID: PMC10946469 DOI: 10.1002/jbmr.4801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 02/12/2023] [Accepted: 03/07/2023] [Indexed: 04/21/2023]
Abstract
Atypical femur fractures (AFFs), considered rare associations of bisphosphonates, have also been reported in patients with monogenic bone disorders without bisphosphonate use. The exact association between AFFs and monogenic bone disorders remains unknown. Our aim was to determine the prevalence of monogenic bone disorders in a Dutch AFF cohort. AFF patients were recruited from two specialist bone centers in the Netherlands. Medical records of the AFF patients were reviewed for clinical features of monogenic bone disorders. Genetic variants identified by whole-exome sequencing in 37 candidate genes involved in monogenic bone disorders were classified based on the American College of Medical Genetics and Genomics (ACMG) classification guidelines. Copy number variations overlapping the candidate genes were also evaluated using DNA array genotyping data. The cohort comprises 60 AFF patients (including a pair of siblings), with 95% having received bisphosphonates. Fifteen AFF patients (25%) had clinical features of monogenic bone disorders. Eight of them (54%), including the pair of siblings, had a (likely) pathogenic variant in either PLS3, COL1A2, LRP5, or ALPL. One patient carried a likely pathogenic variant in TCIRG1 among patients not suspected of monogenic bone disorders (2%). In total, nine patients in this AFF cohort (15%) had a (likely) pathogenic variant. In one patient, we identified a 12.7 Mb deletion in chromosome 6, encompassing TENT5A. The findings indicate a strong relationship between AFFs and monogenic bone disorders, particularly osteogenesis imperfecta and hypophosphatasia, but mainly in individuals with symptoms of these disorders. The high yield of (likely) pathogenic variants in AFF patients with a clinical suspicion of these disorders stresses the importance of careful clinical evaluation of AFF patients. Although the relevance of bisphosphonate use in this relationship is currently unclear, clinicians should consider these findings in medical management of these patients. © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Wei Zhou
- Department of Internal MedicineErasmus MCRotterdamThe Netherlands
| | | | | | - Zografia Zervou
- Department of Internal MedicineErasmus MCRotterdamThe Netherlands
| | | | - Natasha M Appelman‐Dijkstra
- Department of Internal Medicine, Division of EndocrinologyLeiden University Medical CenterLeidenThe Netherlands
| | - Peter R Ebeling
- Department of MedicineSchool of Clinical Sciences, Monash UniversityClaytonAustralia
| | - Serwet Demirdas
- Department of Clinical GeneticsErasmus MCRotterdamThe Netherlands
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Kryukov AI, Garov EV, Zelikovich EI, Zagorskaya EE, Kaloshina AS, Garova EE, Panasova AS, Kovtun OV, Khublaryan AG. [Features and results of surgical rehabilitation of hearing loss in osteogenesis imperfecta]. Vestn Otorinolaringol 2023; 88:5-14. [PMID: 38153887 DOI: 10.17116/otorino2023880615] [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: 12/30/2023]
Abstract
Osteogenesis imperfecta (OI) is a form of congenital osteoporosis. Depending on the type of OI, patients experience various types of hearing loss. Depending on the type and degree of hearing loss, various methods of hearing rehabilitation are used in this category of patients. OBJECTIVE To evaluate the features and results of surgical rehabilitation of hearing loss in patients with osteogenesis imperfecta. MATERIAL AND METHODS During the period from 2009 to 2022, 2221 primary stapedoplasty was performed in the department, of which 23 (1.04%) in 21 patients were performed in patients with OI. There were 14 women and 7 men. According to TPA, bilateral hearing loss was detected in 19 patients and unilateral in 2. Conductive hearing loss was observed in 9 cases and mixed - in 14. The average thresholds for bone conduction (BC) were 22.7±8.04 dB, and the bone-air interval (ABG) - 36.1±5.3 dB. According to CT of the temporal bones, all patients showed a bilateral and symmetrical decrease in the density of the auditory ossicles, and in 7 patients there were extensive areas of non-uniform decrease in the density of the bone labyrinth up to +500 - +1000 HU.21 patients underwent 23 operations: in 21 cases stapedoplasty with laser assistance and in 2 cases ossiculoplasty. RESULTS BC thresholds 6 months after surgery averaged 24.6±8.2 dB, and ABG - 12.1±2.9 dB. Closing of ABG ≤10 dB at spoken frequencies was detected in 30.5%, ABG ≤20 dB - in 95%. After 12 months or more after the operation, no change in the audiological parameters was noted. CONCLUSIONS Stapes surgery for conductive and mixed hearing loss in OI patients is functionally effective. The best results are achieved after therapy with bisphosphonates with preparations of sodium fluoride, calcium and vitamin D, performing the operation when the density of demineralization zones reaches 1000 HU and using laser assistance. Taking into account the demineralization of the bone structures of the temporal bone, it is recommended to use autocartilaginous stirrup prostheses to restore sound conduction or to cover the attachment area of other prostheses with autologous tissues to prevent necrosis of the long stalk of the incus and stabilize long-term functional results.
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Affiliation(s)
- A I Kryukov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - E V Garov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - E I Zelikovich
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E E Zagorskaya
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - A S Kaloshina
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E E Garova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - A S Panasova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - O V Kovtun
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - A G Khublaryan
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
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Ugarteburu M, Cardoso L, Richter CP, Carriero A. Treatments for hearing loss in osteogenesis imperfecta: a systematic review and meta-analysis on their efficacy. Sci Rep 2022; 12:17125. [PMID: 36224204 PMCID: PMC9556526 DOI: 10.1038/s41598-022-20169-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 09/09/2022] [Indexed: 01/04/2023] Open
Abstract
About 70% of people with osteogenesis imperfecta (OI) experience hearing loss. There is no cure for OI, and therapies to ameliorate hearing loss rely on conventional treatments for auditory impairments in the general population. The success rate of these treatments in the OI population with poor collagenous tissues is still unclear. Here, we conduct a systematic review and meta-analysis on the efficacy of treatments addressing hearing loss in OI. This study conforms to the reporting standards of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA). Data sources include published articles in Medline via PubMed, Web of Science, Scopus, and Embase, from their inception to November 2020. Studies included individuals with OI undergoing a hearing loss treatment, having pre- and postoperative objective assessment of hearing function at a specified follow-up length. Our search identified 1144 articles, of which 67 were reviewed at full-text screening. A random-effects meta-analysis was conducted on the selected articles (n = 12) of people with OI that underwent stapes surgery. Success was assessed as the proportion of ears with a postoperative Air-Bone Gap (ABG) ≤ 10 dB. A systematic review was conducted on the remaining articles (n = 13) reporting on other treatments. No meta-analysis was conducted on the latter due to the low number of articles on the topic and the nature of single case studies. The meta-analysis shows that stapes surgeries have a low success rate of 59.08 (95% CI 45.87 to 71.66) in the OI population. The systematic review revealed that cochlear implants, bone-anchored hearing aids, and other implantable hearing aids proved to be feasible, although challenging, in the OI population, with only 2 unsuccessful cases among the 16 reviewed single cases. This analysis of published data on OI shows poor clinical outcomes for the procedures addressing hearing loss. Further studies on hearing loss treatments for OI people are needed. Notably, the mechanisms of hearing loss in OI need to be determined to develop successful and possibly non-invasive treatment strategies.
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Affiliation(s)
- Maialen Ugarteburu
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Luis Cardoso
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Claus-Peter Richter
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL, USA
- The Hugh Knowles Center, Northwestern University, Evanston, IL, USA
| | - Alessandra Carriero
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA.
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Tan W, Ji Y, Qian Y, Lin Y, Ye R, Wu W, Li Y, Sun Y, Pan J. Mutational Screening of Skeletal Genes in 14 Chinese Children with Osteogenesis Imperfecta Using Targeted Sequencing. J Immunol Res 2022; 2022:5068523. [PMID: 35647203 PMCID: PMC9135566 DOI: 10.1155/2022/5068523] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/28/2022] [Accepted: 05/03/2022] [Indexed: 11/28/2022] Open
Abstract
Background As a heterogeneous hereditary connective tissue disorder, osteogenesis imperfecta (OI) is clinically characterized by increased fracture susceptibility. Analysis of genetic pathogenic variants in patients with OI provides a basis for genetic counseling and prenatal diagnosis. Methods In this study, 14 diagnosed OI patients from sporadic Chinese families were enrolled to be screened for potential mutations from these patients by next-generation sequencing technology. Results 34 different variants were identified. 18 variants were from 4 OI-related genes including COL1A1, COL1A2, P3H1, and WNT1, and 10 variants are novel. Most OI patients (11 out of 14, 78%) harbor variants in type I collagen genes. Conclusions Our results support previously established estimates of the distribution and prevalence of OI mutations and highlight both phenotype and genetic heterogeneity among and within families. We report several novel variants of OI, which expands the clinical spectrum of OI. In summary, our data provides disease-causing genes information for genetic counseling towards OI patients and families and also provides a reference for clinicians in the diagnosis of OI, also in prenatal diagnosis of this disease.
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Affiliation(s)
- Wei Tan
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Yuelun Ji
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Yuepeng Qian
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Yongchang Lin
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Ruolian Ye
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Weiping Wu
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Yibin Li
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Yongjian Sun
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
| | - Jianyin Pan
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510515, China
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Ltaief-Boudrigua A, Lina-Granade G, Truy E, Hermann R, Chevrel G. High Heterogeneity of Temporal Bone CT Aspects in Osteogenesis Imperfecta Is Not Linked to Hearing Loss. J Clin Med 2022; 11:jcm11082171. [PMID: 35456264 PMCID: PMC9027494 DOI: 10.3390/jcm11082171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To determine whether temporal bone computed tomography (CT) features are linked to the presence and type of hearing loss in osteogenesis imperfecta (OI) when considering hearing-impaired OI patients and normally hearing (NH) OI ones. A secondary objective was to assess whether other factors influence CT features in a large sample: age, type of mutation, or bone mineral density (BMD). METHODS A total of 41 adults with OI underwent CTs and pure-tone audiometry in 82 ears. Hearing thresholds were normal in 64 out of 82 ears, and most had not been operated on for stapedectomy or stapedotomy. Ossicle density, footplates, oval and round windows, retrofenestral peri- and endolabyrinths, and temporal pneumatization were analyzed twice by an experienced radiologist. CT features were compared to hearing, age, collagen mutations, and bone mineral density. RESULTS Unexpectedly a high prevalence of footplate, ossicle, and otic capsule anomalies was observed, even in NH ears. Footplate hypodensity or thickening was mostly found in ears without conductive hearing loss. There were significantly more retrofenestral anomalies or window obstruction in ears with a sensorineural hearing loss component than in ears without. Age was significantly higher in ears with middle layer hypodensity than in ears without. Patients with mutations were expected to have reduced collagen quantity and had significantly more footplate or retrofenestral anomalies than those with qualitative mutations. BMD was significantly higher in ears without temporal hyperpneumatization. CONCLUSION Temporal bone CT features in OI are present in a large proportion of patients, had they hearing loss or not, and might be determined more by collagen mutation type than by age or BMD.
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Affiliation(s)
- Aïcha Ltaief-Boudrigua
- Department of Radiology, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France;
| | - Genevieve Lina-Granade
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France; (G.L.-G.); (E.T.); (R.H.)
- Centre de Compétence Maladies Rares en ORL, Hospices Civils de Lyon, 69003 Lyon, France
| | - Eric Truy
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France; (G.L.-G.); (E.T.); (R.H.)
- Centre de Compétence Maladies Rares en ORL, Hospices Civils de Lyon, 69003 Lyon, France
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, Equipe IMPACT, 69675 Bron, France
- Claude Bernard University Lyon 1, 69008 Lyon, France
| | - Ruben Hermann
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France; (G.L.-G.); (E.T.); (R.H.)
- Centre de Compétence Maladies Rares en ORL, Hospices Civils de Lyon, 69003 Lyon, France
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, Equipe IMPACT, 69675 Bron, France
- Claude Bernard University Lyon 1, 69008 Lyon, France
| | - Guillaume Chevrel
- Department of SAMU 69-Emergency, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France
- Department of Rheumatology and Bone Diseases, Edouard Herriot Hospital, Hospices Civils de Lyon, 69003 Lyon, France
- Correspondence:
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Osteogenesis Imperfecta/Ehlers-Danlos Overlap Syndrome and Neuroblastoma-Case Report and Review of Literature. Genes (Basel) 2022; 13:genes13040581. [PMID: 35456387 PMCID: PMC9024599 DOI: 10.3390/genes13040581] [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: 02/28/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 11/21/2022] Open
Abstract
Osteogenesis imperfecta/Ehlers−Danlos (OI/EDS) overlap syndrome is a recently described disorder of connective tissue, characterized by mutation of COL1A1 (17q21.33) or COL1A2 (7q21.3) genes, that are involved in α-1 and α-2 chains of type 1 collagen synthesis. The clinical spectrum of this new clinical entity is broad: patients could present a mixed phenotype that includes features of both osteogenesis imperfecta (bone fragility, long bone fractures, blue sclerae, short stature) and Ehlers−Danlos syndrome (joint hyperextensibility, soft and hyperextensible skin, abnormal wound healing, easy bruising, vascular fragility). We reported the case of a young Caucasian girl with severe short stature and a previous history of neuroblastoma, who displayed the compound phenotype of OI/EDS. Next generation sequencing was applied to the proband and her parent genome. Our patient presented a de novo heterozygous COL1A1 variant (c.3235G>A, p.Gly1079Ser), whose presence might be indicative of diagnosis of OI/EDS overlap syndrome. We also hypothesize that the association with the previous history of neuroblastoma could be influenced by the presence of COL1A1 mutation, whose role has been already described in the behavior and progression of some cancers.
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9
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Nadyrshina D, Zaripova A, Tyurin A, Minniakhmetov I, Zakharova E, Khusainova R. Osteogenesis Imperfecta: Search for Mutations in Patients from the Republic of Bashkortostan (Russia). Genes (Basel) 2022; 13:genes13010124. [PMID: 35052464 PMCID: PMC8774438 DOI: 10.3390/genes13010124] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/30/2021] [Accepted: 01/01/2022] [Indexed: 02/04/2023] Open
Abstract
Osteogenesis imperfecta (OI) is an inherited disease of bone characterized by increased bone fragility. Here, we report the results of the molecular architecture of osteogenesis imperfecta research in patients from Bashkortostan Republic, Russia. In total, 16 mutations in COL1A1, 11 mutations in COL1A2, and 1 mutation in P3H1 and IFIMT5 genes were found in isolated states; 11 of them were not previously reported in literature. We found mutations in CLCN7, ALOX12B, PLEKHM1, ERCC4, ARSB, PTH1R, and TGFB1 that were not associated with OI pathogenesis in patients with increased bone fragility. Additionally, we found combined mutations (c.2869C>T, p. Gln957* in COL1A1 and c.1197+5G>A in COL1A2; c.579delT, p. Gly194fs in COL1A1 and c.1197+5G>A in COL1A2; c.2971G>C, p. Gly991Arg in COL1A2 and c.212G>C, p.Ser71Thr in FGF23; c.-14C>T in IFITM5 and c.1903C>T, p. Arg635* in LAMB3) in 4 patients with typical OI clinic phenotypes.
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Affiliation(s)
- Dina Nadyrshina
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (A.Z.); (I.M.); (R.K.)
- Departament of Genetics and Fundamental Medicine, Bashkir State University, 450076 Ufa, Russia
- Correspondence: ; Tel.:+7-9033559907
| | - Aliya Zaripova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (A.Z.); (I.M.); (R.K.)
- Republican Medical Genetics Centre, 450076 Ufa, Russia
| | - Anton Tyurin
- Internal Medicine Department, Bashkir State Medical University, 450008 Ufa, Russia;
| | - Ildar Minniakhmetov
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (A.Z.); (I.M.); (R.K.)
- Republican Medical Genetics Centre, 450076 Ufa, Russia
- Internal Medicine Department, Bashkir State Medical University, 450008 Ufa, Russia;
| | | | - Rita Khusainova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (A.Z.); (I.M.); (R.K.)
- Republican Medical Genetics Centre, 450076 Ufa, Russia
- Internal Medicine Department, Bashkir State Medical University, 450008 Ufa, Russia;
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10
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De Paolis A, Miller BJ, Doube M, Bodey AJ, Rau C, Richter CP, Cardoso L, Carriero A. Increased cochlear otic capsule thickness and intracortical canal porosity in the oim mouse model of osteogenesis imperfecta. J Struct Biol 2021; 213:107708. [PMID: 33581284 DOI: 10.1016/j.jsb.2021.107708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 01/19/2023]
Abstract
Osteogenesis imperfecta (OI or brittle bone disease) is a group of genetic disorders of the connective tissues caused mainly by mutations in the genes encoding collagen type I. Clinical manifestations of OI include skeletal fragility, bone deformities, and severe functional disabilities, such as hearing loss. Progressive hearing loss, usually beginning in childhood, affects approximately 70% of people with OI with more than half of the cases involving the inner ear. There is no cure for OI nor a treatment to ameliorate its corresponding hearing loss, and very little is known about the properties of OI ears. In this study, we investigate the morphology of the otic capsule and the cochlea in the inner ear of the oim mouse model of OI. High-resolution 3D images of 8-week old oim and WT inner ears were acquired using synchrotron microtomography. Volumetric morphometric measurements were conducted for the otic capsule, its intracortical canal network and osteocyte lacunae, and for the cochlear spiral ducts. Our results show that the morphology of the cochlea is preserved in the oim ears at 8 weeks of age but the otic capsule has a greater cortical thickness and altered intracortical bone porosity, with a larger number and volume density of highly branched canals in the oim otic capsule. These results portray a state of compromised bone quality in the otic capsule of the oim mice that may contribute to their hearing loss.
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Affiliation(s)
- Annalisa De Paolis
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | | | - Michael Doube
- Department of Infectious Diseases and Public Health, City University of Hong Kong, HK
| | - Andrew John Bodey
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
| | - Christoph Rau
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK; Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; University of Manchester, Manchester, UK
| | - Claus-Peter Richter
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; The Hugh Knowles Center, Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL, USA
| | - Luis Cardoso
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Alessandra Carriero
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA.
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11
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Madhuri V, Selina A, Loganathan L, Kumar A, Kumar V, Raymond R, Ramesh S, Vincy N, Joel G, James D, Kandagaddala M, B A. Osteogenesis imperfecta: Novel genetic variants and clinical observations from a clinical exome study of 54 Indian patients. Ann Hum Genet 2020; 85:37-46. [PMID: 32770541 DOI: 10.1111/ahg.12403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 11/30/2022]
Abstract
Osteogenesis imperfecta (OI) is a group of inherited disorders with increased bone fragility and wide genetic heterogeneity. We report the outcome of clinical exome sequencing validated by Sanger sequencing in clinically diagnosed 54 OI patients in Indian population. In 52 patients, we report 20 new variants involving both dominant and recessive OI-specific genes and correlate these with phenotypes. COL1A1 and COL1A2 gene variants were identified in 44.23%, of which 28.84% were glycine substitution abnormalities. Two novel compound heterozygous variants in the FKBP10 gene were seen in two unrelated probands. A novel heterogeneous duplication of chromosomal region chr17: 48268168-48278884 from exons 1-33 of the COL1A1 gene was found in one proband. In five probands, there were additional variants in association with OI. These were ANO5 in association with CRTAP in two probands of the same family causing gnathodiaphyseal dysplasia, COL5A2 with LEPRE1 causing Ehlers Danlos syndrome, COL11A1 in addition to COL1A1 causing Stickler syndrome, and a previously unreported combination of SLC34A1 gene variant with FKBP10 leading to Fanconi renal tubular syndrome type II. Our findings demonstrate the efficacy of clinical exome sequencing in screening OI patients, classifying its subtypes, and identifying associated disorders in consanguineous populations.
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Affiliation(s)
- Vrisha Madhuri
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Agnes Selina
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Lakshmi Loganathan
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Ashis Kumar
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Vignesh Kumar
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Renita Raymond
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Sowmya Ramesh
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Nimmy Vincy
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Giftson Joel
- Paediatric Orthopaedic, Christian Medical College, Vellore, India.,Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Deeptiman James
- Paediatric Orthopaedic, Christian Medical College, Vellore, India
| | | | - Antonisamy B
- Biostatistics Department, Christian Medical College, Vellore, India
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12
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Machol K, Hadley TD, Schmidt J, Cuthbertson D, Traboulsi H, Silva RC, Citron C, Khan S, Citron K, Carter E, Brookler K, Shapiro JR, Steiner RD, Byers PH, Glorieux FH, Durigova M, Smith P, Bober MB, Sutton VR, Lee BH, Nagamani SCS, Raggio C. Hearing loss in individuals with osteogenesis imperfecta in North America: Results from a multicenter study. Am J Med Genet A 2020; 182:697-704. [PMID: 31876392 PMCID: PMC7385724 DOI: 10.1002/ajmg.a.61464] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 12/05/2019] [Indexed: 12/16/2022]
Abstract
Hearing loss (HL) is an extra-skeletal manifestation of the connective tissue disorder osteogenesis imperfecta (OI). Systematic evaluation of the prevalence and characteristics of HL in COL1A1/COL1A2-related OI will contribute to a better clinical management of individuals with OI. We collected and analyzed pure-tone audiometry data from 312 individuals with OI who were enrolled in the Linked Clinical Research Centers and the Brittle Bone Disorders Consortium. The prevalence, type, and severity of HL in COL1A1/COL1A2-related OI are reported. We show that the prevalence of HL in OI is 28% and increased with age in Type I OI but not in Types III and IV. Individuals with OI Types III and IV are at a higher risk to develop HL in the first decade of life when compared to OI Type I. We also show that the prevalence of SNHL is higher in females with OI compared to males. This study reveals new insights regarding prevalence of HL in OI including a lower general prevalence of HL in COL1A1/COL1A2-related OI than previously reported (28.3 vs. 65%) and high prevalence of SNHL in females. Our data support the need in early routine hearing evaluation in all types of OI that can be adjusted to the severity of the skeletal disease.
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Affiliation(s)
- Keren Machol
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Trevor D Hadley
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Jake Schmidt
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Henri Traboulsi
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Rodrigo C Silva
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Chloe Citron
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Sobiah Khan
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Kate Citron
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Erin Carter
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Kenneth Brookler
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Jay R Shapiro
- Department of Bone and Osteogenesis Imperfecta, Kennedy Krieger Institute, Baltimore, Maryland
- Department of Medicine at Uniformed Services, University of the Health Sciences, Bethesda, Maryland
| | - Robert D Steiner
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
- Pediatrics and Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon
| | - Peter H Byers
- Department of Medicine, Division of Medical Genetics, University of Washington, Seattle
- Department of Pathology, Division of Medical Genetics, University of Washington, Seattle
| | - Francis H Glorieux
- Shriner's Hospital for Children and McGill University, Montreal, Quebec, Canada
| | - Michaela Durigova
- Shriner's Hospital for Children and McGill University, Montreal, Quebec, Canada
| | - Peter Smith
- Motion Analysis Laboratory, Shriners Hospitals for Children, Chicago, Illinois
| | - Michael B Bober
- Division of Orthogenetics, Alfred I. duPont Hospital for Children, Wilmington, Delaware
| | - Vernon R Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Brendan H Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Sandesh C S Nagamani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Cathleen Raggio
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
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13
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Carré F, Achard S, Rouillon I, Parodi M, Loundon N. Hearing impairment and osteogenesis imperfecta: Literature review. Eur Ann Otorhinolaryngol Head Neck Dis 2019; 136:379-383. [DOI: 10.1016/j.anorl.2019.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Zhytnik L, Maasalu K, Pashenko A, Khmyzov S, Reimann E, Prans E, Kõks S, Märtson A. COL1A1/2 Pathogenic Variants and Phenotype Characteristics in Ukrainian Osteogenesis Imperfecta Patients. Front Genet 2019; 10:722. [PMID: 31447884 PMCID: PMC6696896 DOI: 10.3389/fgene.2019.00722] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 07/10/2019] [Indexed: 11/25/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a hereditary bone disorder caused by defects of type I collagen. Although up to 90% of patients harbor pathogenic variants in the COL1A1/2 gene, which codes for collagen α1/2 chains, the spectrum of OI genotypes may differ between populations, and there is academic controversy around OI genotype-phenotype correlations. In the current study, 94 Ukrainian OI families were interviewed. Clinical and genealogical information was collected from patients in spoken form, and their phenotypes were described. To identify the spectrum of collagen I pathogenic variants, COL1A1/2 mutational analysis with Sanger sequencing was performed on the youngest affected individual of every family. Of the 143 patients investigated, 67 (46.85%) had type I OI, 24 (16.78%) had type III, 49 (34.27%) had type IV, and III (2.10%) had type V. The mean number of fractures suffered per patient per year was 1.32 ± 2.88 (type I 0.50 ± 0.43; type III 3.51 ± 6.18; type IV 1.44 ± 1.77; and type 5 0.77 ± 0.23). 87.23% of patients had skeletal deformations of different severity. Blue sclera, dentinogenesis imperfecta, and hearing loss were present in 87%, 55%, and 22% of patients, respectively. COL1A1/2 pathogenic variants were harbored by 60 patients (63.83%). 27 pathogenic variants are described herein for the first time. The majority of the pathogenic variants were located in the COL1A1 gene (76.19%). Half (49.21%) of the pathogenic variants were represented by structural variants. OI phenotype severity was highly correlated with type of collagen I defect. The current article presents an analysis of the clinical manifestations and COL1A1/2 mutational spectrum of 94 Ukrainian OI families with 27 novel COL1A1/2 pathogenic variants. It is hoped that this data and its analysis will contribute toward the increased understanding of the phenotype development and genetics of the disorder.
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Affiliation(s)
- Lidiia Zhytnik
- Department of Traumatology and Orthopedics, University of Tartu, Tartu, Estonia
| | - Katre Maasalu
- Department of Traumatology and Orthopedics, University of Tartu, Tartu, Estonia.,Clinic of Traumatology and Orthopedics, Tartu University Hospital, Tartu, Estonia
| | - Andrey Pashenko
- Department of Pediatric Orthopedics, Sytenko Institute of Spine and Joint Pathology, AMS Ukraine, Kharkiv, Ukraine
| | - Sergey Khmyzov
- Department of Pediatric Orthopedics, Sytenko Institute of Spine and Joint Pathology, AMS Ukraine, Kharkiv, Ukraine
| | - Ene Reimann
- Centre of Translational Medicine, University of Tartu, Tartu, Estonia.,Department of Pathophysiology, University of Tartu, Tartu, Estonia
| | - Ele Prans
- Department of Pathophysiology, University of Tartu, Tartu, Estonia
| | - Sulev Kõks
- Perron Institute for Neurological and Translational Science, QEII Medical Centre, Nedlands, WA, Australia
| | - Aare Märtson
- Department of Traumatology and Orthopedics, University of Tartu, Tartu, Estonia.,Clinic of Traumatology and Orthopedics, Tartu University Hospital, Tartu, Estonia
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15
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Zhai N, Lu Y, Wang Y, Zhang S, Peng C, Zhang S, Li T, Chen M, Liu J, Fang F, Ren X, Han J. Splice receptor-site mutation c.697-2A>G of the COL1A1 gene in a Chinese family with osteogenesis imperfecta. Intractable Rare Dis Res 2019; 8:150-153. [PMID: 31218168 PMCID: PMC6557241 DOI: 10.5582/irdr.2019.01046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a genetic disorder characterized by bone fragility and blue sclerae, which are mainly caused by a mutation of the COL1A1 or COL1A2 genes that encode type I procollagen. Mutations in the splice site of type I collagen genes are one of the mutations that cause OI and usually lead to a mild or moderate OI phenotype. A heterozygous A to G point mutation in intron 9 at the -2 position of the splice receptor site of COL1A1 was identified in a family with type I or IV OI. Three affected individuals in four generations of one family all presented with several clinical symptoms. They all had pectus carinatum, flat feet, gray-blue sclerae, and normal stature, teeth, hearing, and vision. Forearm fractures, small joint dislocations, and muscle weakness were all present in the patient's father and grandmother, who presented with a moderate type IV phenotype. The 10-year-old proband with type I OI had suffered a fracture twice, but had no history of joint dislocation or skin hyperextensibility. Charting the family helped to identify clinical symptoms in patients with mutations at the N-terminal of type I collagen genes.
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Affiliation(s)
- Naixiang Zhai
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yanqin Lu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yanzhou Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, China
| | - Shie Zhang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Chuanming Peng
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Shanshan Zhang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Tianyou Li
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, China
| | - Mei Chen
- Department of Orthopaedic Surgery, The People's Hospital of Wuqing District, Tianjin, China
| | - Junlong Liu
- Department of Orthopaedic Surgery, The People's Hospital of Wuqing District, Tianjin, China
| | - Fengling Fang
- Department of Orthopaedic Surgery, The People's Hospital of Wuqing District, Tianjin, China
| | - Xiuzhi Ren
- Department of Orthopaedic Surgery, The People's Hospital of Wuqing District, Tianjin, China
- Address correspondence to:Dr. Jinxiang Han, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Ji'nan 250062, China. E-mail:
| | - Jinxiang Han
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
- Address correspondence to:Dr. Jinxiang Han, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Ji'nan 250062, China. E-mail:
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16
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Genotype-phenotype relationship in a large cohort of osteogenesis imperfecta patients with COL1A1 mutations revealed by a new scoring system. Chin Med J (Engl) 2019; 132:145-153. [PMID: 30614853 PMCID: PMC6365277 DOI: 10.1097/cm9.0000000000000013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Osteogenesis imperfecta (OI), a heritable bone fragility disorder, is mainly caused by mutations in COL1A1 gene encoding α1 chain of type I collagen. This study aimed to investigate the COL1A1 mutation spectrum and quantitatively assess the genotype-phenotype relationship in a large cohort of Chinese patients with OI. METHODS A total of 161 patients who were diagnosed as OI in Department of Endocrinology of Peking Union Medical College Hospital from January 2010 to December 2017 were included in the study. The COL1A1 mutation spectrum was identified by next generation sequencing and confirmed by Sanger sequencing. A new clinical scoring system was developed to quantitatively assess the clinical severity of OI and the genotype-phenotype relationship was analyzed. The independent sample t-test, analysis of variance, Mann-Whitney U-test, Chi-squared test, Pearson correlation, and multiple linear regression were applied for statistical analyses. RESULTS Among 161 patients with OI, 32.9% missense mutations, 16.8% non-sense mutations, 24.2% splice-site mutations, 24.8% frameshift mutations, and 1.2% whole-gene deletions were identified, of which 38 variations were novel. These mutations led to 53 patients carrying qualitative defects and 67 patients carrying quantitative defects in type I collagen. Compared to patients with quantitative mutations, patients with qualitative mutations had lower alkaline phosphatase level (296 [132, 346] U/L vs. 218 [136, 284] U/L, P = 0.009) and higher clinical score (12.2 ± 5.3 vs. 7.4 ± 2.4, P < 0.001), denoting more severe phenotypes including shorter stature, lower bone mineral density, higher fracture frequency, more bone deformity, vertebral compressive fractures, limited movement, and dentinogenesis imperfecta (DI). Patients would not present with DI if the glycine substitutions happened before the 79th amino acid in triple helix of α1 chains. CONCLUSIONS This presented distinctive COL1A1 mutation spectrum in a large cohort of Chinese patients with OI. This new quantitative analysis of genotype-phenotype correlation would be helpful to predict the prognosis of OI and genetic counseling.
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17
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Skarzynski H, Osinska K, Skarzynski PH. Osteogenesis Imperfecta: Phenotypic and Intraoperative Findings Observed in Patients Treated Surgically at the World Hearing Centre. J Int Adv Otol 2019; 14:478-483. [PMID: 30644382 DOI: 10.5152/iao.2018.5643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Osteogenesis imperfecta (OI) is a systemic connective tissue disease that affects many systems and organs. Features of the disease are bone deformities, blue sclerae, and changes in the teeth, all of which may be accompanied by hearing loss. Bone fragility also affects structures of the ear, with half the patients developing changes in the auditory ossicles, which manifest as hearing loss. The most typical malformation affects the stapes, although the site of malformation within the middle ear varies. This study aims to characterize patients with OI who underwent surgery due to hearing loss and to find factors that affect the hearing results. MATERIALS AND METHODS This study presents an analysis of phenotypic and intraoperative changes among 20 patients with OI, treated surgically for hearing loss. RESULTS Hearing loss typically affects type I patients with OI. The most common changes concern stapes footplate, arms, and tympanic cavity lining. During reoperations, osseous regrowth was typically detected. CONCLUSION The greater the changes induced systemically by OI, the greater the risk of significant malformations in the middle ear. Patients with OI are at an increased risk of needing revision surgery and of suffering intraoperative complications such as bleeding, which hinders safe completion of the procedure.
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Affiliation(s)
- Henryk Skarzynski
- Institute of Physiology and Pathology of Hearing, World Hearing Center, Warsaw, Poland
| | - Kamila Osinska
- Institute of Physiology and Pathology of Hearing, World Hearing Center, Warsaw, Poland
| | - Piotr Henryk Skarzynski
- Institute of Physiology and Pathology of Hearing, World Hearing Center, Warsaw, Poland; Institute of Sensory Organs, Nadarzyn, Poland
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18
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Genotype-phenotype correlation among Malaysian patients with osteogenesis imperfecta. Clin Chim Acta 2018; 484:141-147. [DOI: 10.1016/j.cca.2018.05.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/24/2018] [Indexed: 12/23/2022]
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19
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Longitudinal analysis of the audiological phenotype in osteogenesis imperfecta: a follow-up study. The Journal of Laryngology & Otology 2018; 132:703-710. [DOI: 10.1017/s0022215118000956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractObjectiveThis prospective study involved a longitudinal analysis of the progression of hearing thresholds in patients with osteogenesis imperfecta.MethodsAudiometric results from 36 osteogenesis imperfecta patients (age range, 6–79 years) were compared between two test times with an average interval of 4 years. Audiometric evaluation included acoustic admittance measurements, acoustic stapedial reflex measurements, pure tone audiometry and otoacoustic emissions testing.ResultsAir conduction pure tone average, corrected for sex and age, and bone conduction pure tone average increased significantly in the study population (p < 0.05 and p < 0.001, respectively). In 14.3 per cent of the evaluated ears, an alteration in type and/or severity of hearing loss was observed.ConclusionAfter an average time interval of four years, significant changes in hearing status occurred in a population of osteogenesis imperfecta patients. These findings highlight the importance of regular audiological follow up in osteogenesis imperfecta patients, including audiometry, and measurements of acoustic admittance, acoustic stapedial reflexes and otoacoustic emissions.
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20
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Fiscaletti M, Biggin A, Bennetts B, Wong K, Briody J, Pacey V, Birman C, Munns CF. Novel variant in Sp7/Osx associated with recessive osteogenesis imperfecta with bone fragility and hearing impairment. Bone 2018; 110:66-75. [PMID: 29382611 DOI: 10.1016/j.bone.2018.01.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 01/26/2023]
Abstract
Osteogenesis imperfecta (OI) is a connective tissue disorder characterized by low bone density and recurrent fractures with a wide genotypic and phenotypic spectrum. Common features include short stature, opalescent teeth, blue sclerae and hearing impairment. The majority (>90%) of patients with OI have autosomal dominant variants in COL1A1/COL1A2, which lead to defects in type 1 collagen. More recently, numerous recessive variants involving other genes have also been identified. Sp7/Osx gene, is a protein coding gene that encodes a zinc finger transcription factor, osterix, which is a member of the Sp subfamily of sequence-specific DNA-binding proteins. Osterix is expressed primarily by osteoblasts and has been shown to be vital for bone formation and bone homeostasis by promoting osteoblast differentiation and maturation. In animal models, Sp7/Osx has also been shown to regulate biomineralization of otoliths, calcium carbonate structures found in the inner ear of vertebrates. Until recently, only one report of a boy with an Sp7/Osx pathogenic variant presenting with bone fragility, limb deformities and normal hearing has been described in the literature. We have identified a novel Sp7/Osx variant in another sibship that presented with osteoporosis, low-trauma fractures and short stature. Progressive moderate-to-severe and severe-to-profound hearing loss secondary to otospongiosis and poor mineralization of ossicles and petrous temporal bone was also noted in two of the siblings. A homozygous pathogenic variant in exon 2 of the Sp7/Osx gene was found in all affected relatives; c.946C>T (p.Arg316Cys). Bone biopsies in the proband and his male sibling revealed significant cortical porosity and high trabecular bone turnover. This is the second report to describe children with OI associated with an Sp7/Osx variant. However, it is the first to describe the bone histomorphometry associated with this disorder and identifies a significant hearing loss as a potential feature in this OI subtype. Early audiology screening in these children is therefore warranted.
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Affiliation(s)
- Melissa Fiscaletti
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia.
| | - Andrew Biggin
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia; Discipline of Child & Adolescent Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Bruce Bennetts
- Discipline of Child & Adolescent Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia; Molecular Genetics Department, Western Sydney Genetics Program, The Children's Hospital at Westmead, Sydney, NSW, Australia; Discipline of Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Karen Wong
- Molecular Genetics Department, Western Sydney Genetics Program, The Children's Hospital at Westmead, Sydney, NSW, Australia; Discipline of Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Julie Briody
- Department of Nuclear Medicine, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Verity Pacey
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia; Department of Health Professions, Macquarie University, Sydney, NSW, Australia
| | - Catherine Birman
- Department of ENT and Discipline of Paediatrics and Child health, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Craig F Munns
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia; Discipline of Child & Adolescent Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
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21
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Yang Q, Xu H, Luo J, Zhang Q, Xie B, Yi S, Rong X, Wang J, Qin Z, Jiang T, Lin L, Zuo Y, Fan X. A novel variant of osteogenesis imperfecta type IV and low serum phosphorus level caused by a Val94Asp mutation in COL1A1. Mol Med Rep 2018; 17:4433-4439. [PMID: 29344653 PMCID: PMC5802218 DOI: 10.3892/mmr.2018.8436] [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: 06/21/2017] [Accepted: 11/22/2017] [Indexed: 11/08/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a rare congenital disorder characterized by bone fragility and fractures, and associated with bone deformity, short stature, dentin, ligament and blue-gray eye sclera. OI is caused by a heterozygous mutation in collagen α-1(I) chain (COL1A1) or collagen α-2(I) chain (COL1A2) genes that encode α chains of type I collagen. Collagen α chain peptide contains an N-propeptide, which has a role in assembly and processing of collagen. Point mutations in the N-propeptide domain appear to trigger OI. In the present study, a novel heterozygous missense mutation, c.281T>A (p.Val94Asp), was identified in the von Willebrand C domain of N-terminal of type I collagen in an individual with type IV OI. The majority of N-terminal mutations are associated with OI/Ehlers-Danlos syndrome (EDS); however, in the present study, the affected individual did not suffer from EDS and the level of serum phosphorus of the patient was low (0.67 mmol/l). A number of clinical phenotypes were observed at the same variation site or in the same region on the polypeptide chain of COL1A, which suggests that additional genetic and environmental factors may influence the severity of OI. The present study may provide insight into the phenotype-genotype association in collagen-associated diseases and improve clinical diagnosis of OI.
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Affiliation(s)
- Qi Yang
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Hong Xu
- Nanning Region Center for Disease Prevention and Control, Nanning, Guangxi 530023, P.R. China
| | - Jinsi Luo
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Qinle Zhang
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Bobo Xie
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Sheng Yi
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Xiuliang Rong
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Jin Wang
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Zailong Qin
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Tingting Jiang
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Li Lin
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Yangjin Zuo
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
| | - Xin Fan
- Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
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Abstract
Skeletal deformity and bone fragility are the hallmarks of the brittle bone dysplasia osteogenesis imperfecta. The diagnosis of osteogenesis imperfecta usually depends on family history and clinical presentation characterized by a fracture (or fractures) during the prenatal period, at birth or in early childhood; genetic tests can confirm diagnosis. Osteogenesis imperfecta is caused by dominant autosomal mutations in the type I collagen coding genes (COL1A1 and COL1A2) in about 85% of individuals, affecting collagen quantity or structure. In the past decade, (mostly) recessive, dominant and X-linked defects in a wide variety of genes encoding proteins involved in type I collagen synthesis, processing, secretion and post-translational modification, as well as in proteins that regulate the differentiation and activity of bone-forming cells have been shown to cause osteogenesis imperfecta. The large number of causative genes has complicated the classic classification of the disease, and although a new genetic classification system is widely used, it is still debated. Phenotypic manifestations in many organs, in addition to bone, are reported, such as abnormalities in the cardiovascular and pulmonary systems, skin fragility, muscle weakness, hearing loss and dentinogenesis imperfecta. Management involves surgical and medical treatment of skeletal abnormalities, and treatment of other complications. More innovative approaches based on gene and cell therapy, and signalling pathway alterations, are under investigation.
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Zhytnik L, Maasalu K, Reimann E, Prans E, Kõks S, Märtson A. Mutational analysis of COL1A1 and COL1A2 genes among Estonian osteogenesis imperfecta patients. Hum Genomics 2017; 11:19. [PMID: 28810924 PMCID: PMC5558703 DOI: 10.1186/s40246-017-0115-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/31/2017] [Indexed: 12/15/2022] Open
Abstract
Background Osteogenesis imperfecta (OI) is a rare bone disorder. In 90% of cases, OI is caused by mutations in the COL1A1/2 genes, which code procollagen α1 and α2 chains. The main aim of the current research was to identify the mutational spectrum of COL1A1/2 genes in Estonian patients. The small population size of Estonia provides a unique chance to explore the collagen I mutational profile of 100% of OI families in the country. Methods We performed mutational analysis of peripheral blood gDNA of 30 unrelated Estonian OI patients using Sanger sequencing of COL1A1 and COL1A2 genes, including all intron-exon junctions and 5′UTR and 3′UTR regions, to identify causative OI mutations. Results We identified COL1A1/2 mutations in 86.67% of patients (26/30). 76.92% of discovered mutations were located in the COL1A1 (n = 20) and 23.08% in the COL1A2 (n = 6) gene. Half of the COL1A1/2 mutations appeared to be novel. The percentage of quantitative COL1A1/2 mutations was 69.23%. Glycine substitution with serine was the most prevalent among missense mutations. All qualitative mutations were situated in the chain domain of pro-α1/2 chains. Conclusion Our study shows that among the Estonian OI population, the range of collagen I mutations is quite high, which agrees with other described OI cohorts of Northern Europe. The Estonian OI cohort differs due to the high number of quantitative variants and simple missense variants, which are mostly Gly to Ser substitutions and do not extend the chain domain of COL1A1/2 products.
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Affiliation(s)
- Lidiia Zhytnik
- Department of Traumatology and Orthopedics, University of Tartu, Puusepa 8, 51014, Tartu, Estonia.
| | - Katre Maasalu
- Department of Traumatology and Orthopedics, University of Tartu, Puusepa 8, 51014, Tartu, Estonia.,Clinic of Traumatology and Orthopedics, Tartu University Hospital, Puusepa 8, 51014, Tartu, Estonia
| | - Ene Reimann
- Centre of Translational Medicine, University of Tartu, Ravila 14a, 50411, Tartu, Estonia.,Department of Pathophysiology, University of Tartu, Ravila 19, 50411, Tartu, Estonia
| | - Ele Prans
- Department of Pathophysiology, University of Tartu, Ravila 19, 50411, Tartu, Estonia
| | - Sulev Kõks
- Centre of Translational Medicine, University of Tartu, Ravila 14a, 50411, Tartu, Estonia.,Department of Pathophysiology, University of Tartu, Ravila 19, 50411, Tartu, Estonia
| | - Aare Märtson
- Department of Traumatology and Orthopedics, University of Tartu, Puusepa 8, 51014, Tartu, Estonia.,Clinic of Traumatology and Orthopedics, Tartu University Hospital, Puusepa 8, 51014, Tartu, Estonia
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Partearroyo T, Vallecillo N, Pajares MA, Varela-Moreiras G, Varela-Nieto I. Cochlear Homocysteine Metabolism at the Crossroad of Nutrition and Sensorineural Hearing Loss. Front Mol Neurosci 2017; 10:107. [PMID: 28487633 PMCID: PMC5403919 DOI: 10.3389/fnmol.2017.00107] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 03/30/2017] [Indexed: 12/27/2022] Open
Abstract
Hearing loss (HL) is one of the most common causes of disability, affecting 360 million people according to the World Health Organization (WHO). HL is most frequently of sensorineural origin, being caused by the irreversible loss of hair cells and/or spiral ganglion neurons. The etiology of sensorineural HL (SNHL) is multifactorial, with genetic and environmental factors such as noise, ototoxic substances and aging playing a role. The nutritional status is central in aging disability, but the interplay between nutrition and SNHL has only recently gained attention. Dietary supplementation could therefore constitute the first step for the prevention and potential repair of hearing damage before it reaches irreversibility. In this context, different epidemiological studies have shown correlations among the nutritional condition, increased total plasma homocysteine (tHcy) and SNHL. Several human genetic rare diseases are also associated with homocysteine (Hcy) metabolism and SNHL confirming this potential link. Accordingly, rodent experimental models have provided the molecular basis to understand the observed effects. Thus, increased tHcy levels and vitamin deficiencies, such as folic acid (FA), have been linked with SNHL, whereas long-term dietary supplementation with omega-3 fatty acids improved Hcy metabolism, cell survival and hearing acuity. Furthermore, pharmacological supplementations with the anti-oxidant fumaric acid that targets Hcy metabolism also improved SNHL. Overall these results strongly suggest that cochlear Hcy metabolism is a key player in the onset and progression of SNHL, opening the way for the design of prospective nutritional therapies.
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Affiliation(s)
- Teresa Partearroyo
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU San PabloMadrid, Spain
| | - Néstor Vallecillo
- Departamento de Fisiopatología y del Sistema Nervios, Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC-UAM)Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos IIIMadrid, Spain
| | - María A Pajares
- Departamento de Fisiopatología y del Sistema Nervios, Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC-UAM)Madrid, Spain.,Investigación en Otoneurocirugía, Instituto de Investigación Sanitaria La Paz (IdiPAZ)Madrid, Spain
| | - Gregorio Varela-Moreiras
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU San PabloMadrid, Spain
| | - Isabel Varela-Nieto
- Departamento de Fisiopatología y del Sistema Nervios, Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC-UAM)Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos IIIMadrid, Spain.,Investigación en Otoneurocirugía, Instituto de Investigación Sanitaria La Paz (IdiPAZ)Madrid, Spain
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25
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Lhaneche L, Hald JD, Domingues A, Hannouche D, Delepine M, Zelenika D, Boland A, Ostertag A, Cohen-Solal M, Langdahl BL, Harsløf T, de Vernejoul MC, Geoffroy V, Jehan F. Variations of SOST mRNA expression in human bone are associated with DNA polymorphism and DNA methylation in the SOST gene. Bone 2016; 92:107-115. [PMID: 27519970 DOI: 10.1016/j.bone.2016.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/12/2016] [Accepted: 08/08/2016] [Indexed: 11/24/2022]
Abstract
SOST encodes sclerostin, an inhibitor of bone formation that antagonizes canonical Wnt signaling. Variations of SOST expression have an impact on bone mineral density (BMD) and bone strength. We hypothesized that genetic and epigenetic DNA modifications have an impact on SOST gene expression. By analyzing 43 bone samples from women, we found that rs851054 (G/A) is associated with SOST mRNA expression, donors with one or two G allele(s) displaying higher SOST expression (p<0.05). Beside this polymorphism, we also investigated the role of CpG methylation in SOST mRNA expression, and analyzed methylation variation at 13 CpG sites on the 1st exon of SOST in 14 human bone samples. Principal component analysis identified three groups of CpG sites that explained most of the methylation variation. We calculated the percentage of methylation in the main group of CpGs, and showed that higher rates of methylated CpGs are associated with higher SOST mRNA expression. To demonstrate that change in SOST expression might be related to human bone disease, we analyzed 131 patients with osteogenesis imperfecta (OI), a rare disease characterized by low BMD, bone fragility, and marked intra-familial variability of bone phenotypes. We found an association between rs851054 of the SOST promoter and the fracture rate only during childhood (p<0.01). In conclusion, genetic and epigenetic changes contribute to variation in SOST expression in human bone. Our data also indicate that these variations may be related to the severity of OI.
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Affiliation(s)
- Leila Lhaneche
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Jannie D Hald
- Department of Endocrinology and Internal Medicine, THG, Aarhus University Hospital, DK-8000 Aarhus, Denmark
| | - Aline Domingues
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Didier Hannouche
- Department of Orthopaedic Surgery, Hôpital Lariboisière, AP-HP, 75010 Paris, France
| | - Marc Delepine
- Centre National de Genotypage, Institut Génomique, Commissariat à l'énergie Atomique, 2 rue Gaston Crémieux, CP5721 91057 Evry Cedex, France
| | - Diana Zelenika
- Centre National de Genotypage, Institut Génomique, Commissariat à l'énergie Atomique, 2 rue Gaston Crémieux, CP5721 91057 Evry Cedex, France
| | - Anne Boland
- Centre National de Genotypage, Institut Génomique, Commissariat à l'énergie Atomique, 2 rue Gaston Crémieux, CP5721 91057 Evry Cedex, France
| | - Agnes Ostertag
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Martine Cohen-Solal
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France; Service de Rhumatologie, GH Saint-Louis Lariboisière Fernand Widal, 75010 Paris, France
| | - Bente L Langdahl
- Department of Endocrinology and Internal Medicine, THG, Aarhus University Hospital, DK-8000 Aarhus, Denmark
| | - Torben Harsløf
- Department of Endocrinology and Internal Medicine, THG, Aarhus University Hospital, DK-8000 Aarhus, Denmark
| | - Marie-Christine de Vernejoul
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France; Service de Rhumatologie, GH Saint-Louis Lariboisière Fernand Widal, 75010 Paris, France
| | - Valérie Geoffroy
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Frédéric Jehan
- INSERM U1132 BIOSCAR, Hôpital Lariboisière, 75010 Paris, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France.
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26
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Genetic epidemiology, prevalence, and genotype-phenotype correlations in the Swedish population with osteogenesis imperfecta. Eur J Hum Genet 2015; 23:1042-50. [PMID: 25944380 DOI: 10.1038/ejhg.2015.81] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/17/2015] [Accepted: 03/20/2015] [Indexed: 11/08/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a rare hereditary bone fragility disorder, caused by collagen I mutations in 90% of cases. There are no comprehensive genotype-phenotype studies on >100 families outside North America, and no population-based studies determining the genetic epidemiology of OI. Here, detailed clinical phenotypes were recorded, and the COL1A1 and COL1A2 genes were analyzed in 164 Swedish OI families (223 individuals). Averages for bone mineral density (BMD), height and yearly fracture rate were calculated and related to OI and mutation type. N-terminal helical mutations in both the α1- and α2-chains were associated with the absence of dentinogenesis imperfecta (P<0.0001 vs 0.0049), while only those in the α1-chain were associated with blue sclera (P=0.0110). Comparing glycine with serine substitutions, α1-alterations were associated with more severe phenotype (P=0.0031). Individuals with type I OI caused by qualitative vs quantitative mutations were shorter (P<0.0001), but did not differ considering fractures or BMD. The children in this cohort were estimated to represent >95% of the complete Swedish pediatric OI population. The prevalence of OI types I, III, and IV was 5.16, 0.89, and 1.35/100 000, respectively (7.40/100 000 overall), corresponding to what has been estimated but not unequivocally proven in any population. Collagen I mutation analysis was performed in the family of 97% of known cases, with causative mutations found in 87%. Qualitative mutations caused 32% of OI type I. The data reported here may be helpful to predict phenotype, and describes for the first time the genetic epidemiology in >95% of an entire OI population.
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28
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Symoens S, Hulmes DJS, Bourhis JM, Coucke PJ, De Paepe A, Malfait F. Type I procollagen C-propeptide defects: study of genotype-phenotype correlation and predictive role of crystal structure. Hum Mutat 2014; 35:1330-41. [PMID: 25146735 DOI: 10.1002/humu.22677] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/28/2014] [Accepted: 08/08/2014] [Indexed: 11/10/2022]
Abstract
The type I procollagen carboxyterminal(C-)propeptides are crucial in directing correct assembly of the procollagen heterotrimers. Defects in these domains have anecdotally been reported in patients with Osteogenesis Imperfecta (OI) and few genotype-phenotype correlations have been described. To gain insight in the functional consequences of C-propeptide defects, we performed a systematic review of clinical, molecular, and biochemical findings in all patients in whom we identified a type I procollagen C-propeptide defect, and compared this with literature data. We report 30 unique type I procollagen C-propeptide variants, 24 of which are novel. The outcome of COL1A1 nonsense and frameshift variants depends on the location of the premature termination codon. Those located prior to 50-55 nucleotides upstream of the most 3' exon-exon junction lead to nonsense-mediated mRNA decay (NMD) and cause mild OI. Those located beyond this boundary escape NMD, generally lead to production of stable, overmodified procollagen chains, which may partly be retained intracellularly, and are usually associated with severe-to-lethal OI. Proα1(I)-C-propeptide defects that permit chain association result in more severe phenotypes than those inhibiting chain association. We demonstrate that the crystal structure of the proα1(III)-C-propeptide is a reliable tool to predict phenotypic severity for most COL1A1-C-propeptide missense variants, whereas for COL1A2-C-propeptide variants, the phenotypic outcome is milder than predicted.
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Affiliation(s)
- Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, 9000, Ghent, Belgium
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29
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Wang X, Pei Y, Dou J, Lu J, Li J, Lv Z. Identification of a novel COL1A1 frameshift mutation, c.700delG, in a Chinese osteogenesis imperfecta family. Genet Mol Biol 2014; 38:1-7. [PMID: 25983617 PMCID: PMC4415561 DOI: 10.1590/s1415-475738120130336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 08/09/2014] [Indexed: 11/21/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a family of genetic disorders associated with bone
loss and fragility. Mutations associated with OI have been found in genes encoding
the type I collagen chains. People with OI type I often produce insufficient α1-chain
type I collagen because of frameshift, nonsense, or splice site mutations in
COL1A1 or COL1A2. This report is of a Chinese
daughter and mother who had both experienced two bone fractures. Because skeletal
fragility is predominantly inherited, we focused on identifying mutations in
COL1A1 and COL1A2 genes. A novel mutation in
COL1A1, c.700delG, was detected by genomic DNA sequencing in the
mother and daughter, but not in their relatives. The identification of this mutation
led to the conclusion that they were affected by mild OI type I. Open reading frame
analysis indicated that this frameshift mutation would truncate α1-chain type I
collagen at residue p263 (p.E234KfsX264), while the wild-type protein would contain
1,464 residues. The clinical data were consistent with the patients’ diagnosis of
mild OI type I caused by haploinsufficiency of α1-chain type I collagen. Combined
with previous reports, identification of the novel mutation
COL1A1-c.700delG in these patients suggests that
additional genetic and environmental factors may influence the severity of OI.
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Affiliation(s)
- Xiran Wang
- Department of Endocrinology, Chinese PLA General Hospital, Beijing, China ; Department of Cadre's Ward, The Second Artillery General Hospital Chinese PLA, Beijing, China
| | - Yu Pei
- Department of Endocrinology, Chinese PLA General Hospital, Beijing, China
| | - Jingtao Dou
- Department of Endocrinology, Chinese PLA General Hospital, Beijing, China
| | - Juming Lu
- Department of Endocrinology, Chinese PLA General Hospital, Beijing, China
| | - Jian Li
- Department of Elderly Endocrinology, Chinese PLA General Hospital, Beijing, China
| | - Zhaohui Lv
- Department of Endocrinology, Chinese PLA General Hospital, Beijing, China
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30
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Chen K, Wu D, Zhu X, Ni H, Wei X, Mao N, Xie Y, Niu Y, Li M. Gene expression profile analysis of human intervertebral disc degeneration. Genet Mol Biol 2013; 36:448-54. [PMID: 24130454 PMCID: PMC3795174 DOI: 10.1590/s1415-47572013000300021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 06/11/2013] [Indexed: 01/19/2023] Open
Abstract
In this study, we used microarray analysis to investigate the biogenesis and progression of intervertebral disc degeneration. The gene expression profiles of 37 disc tissue samples obtained from patients with herniated discs and degenerative disc disease collected by the National Cancer Institute Cooperative Tissue Network were analyzed. Differentially expressed genes between more and less degenerated discs were identified by significant analysis of microarray. A total of 555 genes were significantly overexpressed in more degenerated discs with a false discovery rate of < 3%. Functional annotation showed that these genes were significantly associated with membrane-bound vesicles, calcium ion binding and extracellular matrix. Protein-protein interaction analysis showed that these genes, including previously reported genes such as fibronectin, COL2A1 and β-catenin, may play key roles in disc degeneration. Unsupervised clustering indicated that the widely used morphology-based Thompson grading system was only marginally associated with the molecular classification of intervertebral disc degeneration. These findings indicate that detailed, systematic gene analysis may be a useful way of studying the biology of intervertebral disc degeneration.
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Affiliation(s)
| | | | - Xiaodong Zhu
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Haijian Ni
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Xianzhao Wei
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Ningfang Mao
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Yang Xie
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Yunfei Niu
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
| | - Ming Li
- Department of Orthopedics, Changhai Hospital affiliated to the Second Military Medical University, Shanghai,
China
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Abstract
BACKGROUND Osteogenesis Imperfecta (OI) is a genetic disorder of connective tissue matrix. OI is caused by mutations that affect type I collagen. The hearing loss in OI is characterized by onset in early adulthood and can be conductive, sensorineural, or mixed. OBJECTIVES To describe the temporal bone histopathology in 9 individuals with OI. MATERIALS AND METHODS Four adult, 1 pediatric, and 4 infant specimens were identified. Temporal bones were removed at autopsy and studied using light microscopy. RESULTS All adults and 1 pediatric specimen showed otosclerotic lesions. The findings included examples of clinical, histologic, and cochlear otosclerosis. The temporal bones of infants showed delayed ossification of the endochondral layer of bone and of the ossicles. There were no infant specimens with otosclerotic lesions. CONCLUSION Hearing loss in OI may be the result of clinical or cochlear otosclerosis. Fracture or atrophy of the ossicles may also be present in OI. A third unidentified mechanism of hearing loss may lead to cochlear degeneration. The described findings of otosclerotic lesions have implications for the observed heterogeneity of hearing loss patterns and for the surgical management of hearing loss in OI.
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Swinnen FKR, Casselman JW, De Leenheer EMR, Cremers CWRJ, Dhooge IJM. Temporal bone imaging in osteogenesis imperfecta patients with hearing loss. Laryngoscope 2013; 123:1988-95. [DOI: 10.1002/lary.23963] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 08/22/2012] [Accepted: 12/06/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Freya K. R. Swinnen
- Department of Otorhinolaryngology; Ghent University Hospital; Ghent; Belgium
| | - Jan W. Casselman
- Department of Medical Imaging; Sint-Jan Hospital; Bruges; Belgium
| | | | - Cor W. R. J. Cremers
- FC Donders Institute for Neurosciences; Radboud University Nijmegen Medical Centre; Department of Otorhinolaryngology; Nijmegen; The Netherlands
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Rohrbach M, Giunta C. Recessive osteogenesis imperfecta: clinical, radiological, and molecular findings. AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS 2012; 160C:175-89. [PMID: 22791419 DOI: 10.1002/ajmg.c.31334] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Osteogenesis imperfecta (OI) or "brittle bone disease" is currently best described as a group of hereditary connective tissue disorders related to primary defects in type I procollagen, and to alterations in type I procollagen biosynthesis, both associated with osteoporosis and increased susceptibility to bone fractures. Initially, the autosomal dominant forms of OI, caused by mutations in either COL1A1 or COL1A2, were described. However, for decades, the molecular defect of a small percentage of patients clinically diagnosed with OI has remained elusive. It has been in the last 6 years that the genetic causes of several forms of OI with autosomal recessive inheritance have been characterized. These comprise defects of collagen chaperones, and proteins involved in type I procollagen assembly, processing and maturation, as well as proteins involved in the formation and homeostasis of bone tissue. This article reviews the recently characterized forms of recessive OI, focusing in particular on their clinical and molecular findings, and on their radiological characterisation. Clinical management and treatment of OI in general will be discussed, too.
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Affiliation(s)
- Marianne Rohrbach
- Connective Tissue Unit, Division of Metabolism, University Children's Hospital and Children's Research Center, Zurich, Switzerland
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Arponen H, Mäkitie O, Haukka J, Ranta H, Ekholm M, Mäyränpää MK, Kaitila I, Waltimo-Sirén J. Prevalence and natural course of craniocervical junction anomalies during growth in patients with osteogenesis imperfecta. J Bone Miner Res 2012; 27:1142-9. [PMID: 22258757 DOI: 10.1002/jbmr.1555] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Pathology in the craniocervical junction is a serious complication of osteogenesis imperfecta (OI). Our aim was to analyze the prevalence and natural course of craniocervical junction anomalies in patients with OI during growth. In a one-center retrospective study, we analyzed lateral skull radiographs and midsagittal magnetic resonance images of 76 patients with either type I, III, or IV OI. The material included longitudinal series of 31 patients. In total, 150 patient images taken at ages 0 to 39 years were analyzed and compared with age-matched control data. Craniocervical anomalies were observed in 37% of patients and in all OI types studied. Of the three types of anomalies, basilar invagination was seen in 13%, basilar impression in 15%, and platybasia in 29% of the patients. From those with an abnormal finding, 44% displayed more than one type of anomaly. At a group level, we found no evidence of progression of craniocervical junction pathology with age. We provide longitudinal and cross-sectional data on craniocervical junction dimensions in growing patients with OI and, based on those, suggest a radiological management strategy for diagnosis of cranial base pathology. A higher risk of having any of the pathological conditions was associated with a lower height Z-score. Careful follow-up of cranial base anomalies particularly in subjects with OI and severe growth failure is warranted.
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Affiliation(s)
- Heidi Arponen
- Department of Orthodontics, Institute of Dentistry, University of Helsinki, Helsinki, Finland.
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Swinnen FKR, De Leenheer EMR, Goemaere S, Cremers CWRJ, Coucke PJ, Dhooge IJM. Association between bone mineral density and hearing loss in osteogenesis imperfecta. Laryngoscope 2012; 122:401-8. [DOI: 10.1002/lary.22408] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/27/2011] [Accepted: 10/03/2011] [Indexed: 11/09/2022]
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Zhang ZL, Zhang H, Ke YH, Yue H, Xiao WJ, Yu JB, Gu JM, Hu WW, Wang C, He JW, Fu WZ. The identification of novel mutations in COL1A1, COL1A2, and LEPRE1 genes in Chinese patients with osteogenesis imperfecta. J Bone Miner Metab 2012; 30:69-77. [PMID: 21667357 DOI: 10.1007/s00774-011-0284-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 05/16/2011] [Indexed: 12/21/2022]
Abstract
Dominant inheritance of osteogenesis imperfecta (OI) is caused by mutations in COL1A1 or COL1A2, the genes that encode type I collagen, and CRTAP, LEPRE1, PPIB, FKBP10, SERPINH1, and SP7 mutations were recently detected in a minority of patients with autosomal recessive OI. However, these findings have been mostly restricted to Western populations. The proportion of mutations and the correlations between genotype and phenotype in Chinese patients with OI are completely unknown. In this study, mutation analyses were performed for COL1A1, COL1A2, CRTAP, and LEPRE1 in a cohort of 58 unrelated Chinese patients with OI; the relationship between collagen type I mutations and clinical features was examined. A total of 56 heterozygous mutations were identified in COL1A1 and COL1A2, including 43 mutations in COL1A1 and 13 mutations in COL1A2. Among the 56 causative COL1A1 and COL1A2 mutations, 24 novel mutations were found, and 25 (44.6%) resulted in the substitution of a glycine within the Gly-X-Y triplet domain of the triple helix. Compared with COL1A1 haploinsufficiency (n = 23), patients with mutations affecting glycine residues had a severe skeletal phenotype. In patients 18 years of age or older, on average patients with COL1A1 haploinsufficiency were taller and had higher femoral neck bone mineral density than with patients with helical mutations. Interestingly, we found two novel compound heterozygous mutations in the LEPRE1 gene in two unrelated families with autosomal recessive OI. Although the genotype-phenotype correlation is still unclear, our findings are useful to understand the genetic basis of Chinese patients with OI.
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Affiliation(s)
- Zhen-Lin Zhang
- Metabolic Bone Disease and Genetics Research Unit, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 600 Yi-Shan Rd, Shanghai 200233, People's Republic of China.
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Swinnen FK, De Leenheer EM, Coucke PJ, Cremers CW, Dhooge IJ. Stapes Surgery in Osteogenesis Imperfecta: Retrospective Analysis of 34 Operated Ears. ACTA ACUST UNITED AC 2012; 17:198-206. [DOI: 10.1159/000336211] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 12/08/2011] [Indexed: 11/19/2022]
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Swinnen FKR, Coucke PJ, De Paepe AM, Symoens S, Malfait F, Gentile FV, Sangiorgi L, D'Eufemia P, Celli M, Garretsen TJTM, Cremers CWRJ, Dhooge IJM, De Leenheer EMR. Osteogenesis Imperfecta: the audiological phenotype lacks correlation with the genotype. Orphanet J Rare Dis 2011; 6:88. [PMID: 22206639 PMCID: PMC3267664 DOI: 10.1186/1750-1172-6-88] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Accepted: 12/29/2011] [Indexed: 11/23/2022] Open
Abstract
Background Osteogenesis Imperfecta (OI) is a heritable connective tissue disorder mainly caused by mutations in the genes COL1A1 and COL1A2 and is associated with hearing loss in approximately half of the cases. The hearing impairment usually starts between the second and fourth decade of life as a conductive hearing loss, frequently evolving to mixed hearing loss thereafter. A minority of patients develop pure sensorineural hearing loss. The interindividual variability in the audiological characteristics of the hearing loss is unexplained. Methods With the purpose of evaluating inter- and intrafamilial variability, hearing was thorougly examined in 184 OI patients (type I: 154; type III: 4; type IV: 26), aged 3-89 years, with a mutation in either COL1A1 or COL1A2 and originating from 89 different families. Due to the adult onset of hearing loss in OI, correlations between the presence and/or characteristics of the hearing loss and the underlying mutation were investigated in a subsample of 114 OI patients from 64 different families who were older than 40 years of age or had developed hearing loss before the age of 40. Results Hearing loss was diagnosed in 48.4% of the total sample of OI ears with increasing prevalence in the older age groups. The predominant type was a mixed hearing loss (27.5%). A minority presented a pure conductive (8.4%) or pure sensorineural (12.5%) loss. In the subsample of 114 OI subjects, no association was found between the nature of the mutation in COL1A1 or COL1A2 genes and the occurrence, type or severity of hearing loss. Relatives originating from the same family differed in audiological features, which may partially be attributed to their dissimilar age. Conclusions Our study confirms that hearing loss in OI shows a strong intrafamilial variability. Additional modifications in other genes are assumed to be responsible for the expression of hearing loss in OI.
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Affiliation(s)
- Freya K R Swinnen
- Department of Otorhinolaryngology, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium.
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Pillion JP, Vernick D, Shapiro J. Hearing loss in osteogenesis imperfecta: characteristics and treatment considerations. GENETICS RESEARCH INTERNATIONAL 2011; 2011:983942. [PMID: 22567374 PMCID: PMC3335494 DOI: 10.4061/2011/983942] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 10/04/2011] [Indexed: 11/22/2022]
Abstract
Osteogenesis imperfecta (OI) is the most common heritable disorder of connective tissue. It is associated with fractures following relatively minor injury, blue sclerae, dentinogenesis imperfecta, increased joint mobility, short stature, and hearing loss. Structures in the otic capsule and inner ear share in the histologic features common to other skeletal tissues. OI is due to mutations involving several genes, the most commonly involved are the COL1A1 or COL1A2 genes which are responsible for the synthesis of the proalpha-1 and proalpha-2 polypeptide chains that form the type I collagen triple helix. A genotype/phenotype relationship to hearing loss has not been established in OI. Hearing loss is commonly found in OI with prevalence rates ranging from 50 to 92% in some studies. Hearing loss in OI may be conductive, mixed, or sensorineural and is more common by the second or third decade. Treatment options such as hearing aids, stapes surgery, and cochlear implants are discussed.
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Affiliation(s)
- Joseph P Pillion
- Department of Audiology, Kennedy Krieger Institute, Baltimore, MD 21205, USA
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Abstract
A new paradigm has emerged for osteogenesis imperfecta as a collagen-related disorder. The more prevalent autosomal dominant forms of osteogenesis imperfecta are caused by primary defects in type I collagen, whereas autosomal recessive forms are caused by deficiency of proteins which interact with type I procollagen for post-translational modification and/or folding. Factors that contribute to the mechanism of dominant osteogenesis imperfecta include intracellular stress, disruption of interactions between collagen and noncollagenous proteins, compromised matrix structure, abnormal cell-cell and cell-matrix interactions and tissue mineralization. Recessive osteogenesis imperfecta is caused by deficiency of any of the three components of the collagen prolyl 3-hydroxylation complex. Absence of 3-hydroxylation is associated with increased modification of the collagen helix, consistent with delayed collagen folding. Other causes of recessive osteogenesis imperfecta include deficiency of the collagen chaperones FKBP10 or Serpin H1. Murine models are crucial to uncovering the common pathways in dominant and recessive osteogenesis imperfecta bone dysplasia. Clinical management of osteogenesis imperfecta is multidisciplinary, encompassing substantial progress in physical rehabilitation and surgical procedures, management of hearing, dental and pulmonary abnormalities, as well as drugs, such as bisphosphonates and recombinant human growth hormone. Novel treatments using cell therapy or new drug regimens hold promise for the future.
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Affiliation(s)
- Antonella Forlino
- Bone and Extracellular Matrix Branch, NICHD, NIH, Bethesda, USA
- Department of Biochemistry, Section of Medicine and Pharmacy, University of Pavia, Italy
| | - Wayne A. Cabral
- Bone and Extracellular Matrix Branch, NICHD, NIH, Bethesda, USA
| | | | - Joan C. Marini
- Bone and Extracellular Matrix Branch, NICHD, NIH, Bethesda, USA
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Hyperuricemia cosegregating with osteogenesis imperfecta is associated with a mutation in GPATCH8. Hum Genet 2011; 130:671-83. [DOI: 10.1007/s00439-011-1006-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 05/09/2011] [Indexed: 10/18/2022]
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Xu Z, Li Y, Zhang X, Zeng F, Yuan M, Liu M, Wang QK, Liu JY. Identification and molecular characterization of two novel mutations in COL1A2 in two Chinese families with osteogenesis imperfecta. J Genet Genomics 2011; 38:149-56. [PMID: 21530898 DOI: 10.1016/j.jgg.2011.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 01/21/2011] [Accepted: 03/06/2011] [Indexed: 01/30/2023]
Abstract
Osteogenesis imperfecta (OI, also known as brittle bone disease) is caused mostly by mutations in two type I collagen genes, COL1A1 and COL1A2 encoding the pro-α1 (I) and pro-α2 (I) chains of type I collagen, respectively. Two Chinese families with autosomal dominant OI were identified and characterized. Linkage analysis revealed linkage of both families to COL1A2 on chromosome 7q21.3-q22.1. Mutational analysis was carried out using direct DNA sequence analysis. Two novel missense mutations, c.3350A>G and c.3305G>C, were identified in exon 49 of COL1A2 in the two families, respectively. The c.3305G>C mutation resulted in substitution of a glycine residue (G) by an alanine residue (A) at codon 1102 (p.G1102A), which was found to be mutated into serine (S), argine (R), aspartic acid (D), or valine (V) in other families. The c.3350A>G variant may be a de novo mutation resulting in p.Y1117C. Both mutations co-segregated with OI in respective families, and were not found in 100 normal controls. The G1102 and Y1117 residues were evolutionarily highly conserved from zebrafish to humans. Mutational analysis did not identify any mutation in the COX-2 gene (a modifier gene of OI). This study identifies two novel mutations p.G1102A and p.Y1117C that cause OI, significantly expands the spectrum of COL1A2 mutations causing OI, and has a significant implication in prenatal diagnosis of OI.
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Affiliation(s)
- Zhenping Xu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Center for Human Genome Research, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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Yang Z, Ke ZF, Zeng C, Wang Z, Shi HJ, Wang LT. Mutation characteristics in type I collagen genes in Chinese patients with osteogenesis imperfecta. GENETICS AND MOLECULAR RESEARCH 2011; 10:177-85. [PMID: 21341209 DOI: 10.4238/vol10-1gmr984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Osteogenesis imperfecta is normally caused by an autosomal dominant mutation in the type I collagen genes COL1A1 and COL1A2. The severity of osteogenesis imperfecta varies, ranging from perinatal lethality to a very mild phenotype. Although there have been many reports of COL1A1 and COL1A2 mutations, few cases have been reported in Chinese people. We report on five unrelated families and three sporadic cases. The mutations were detected by PCR and direct sequencing. Four mutations in COL1A1 and one in COL1A2 were found, among which three mutations were previously unreported. The mutation rates of G>C at base 128 in intron 31 of the COL1A1 gene and G>A at base 162 in intron 30 of the COL1A2 gene were higher than normal. The patients' clinical characteristics with the same mutation were variable even in the same family. We conclude that mutations in COL1A1 and COL1A2 also have an important role in osteogenesis imperfecta in the Chinese population. As the Han Chinese people account for a quarter of the world's population, these new data contribute to the type I collagen mutation map.
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Affiliation(s)
- Z Yang
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
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Ben Amor IM, Glorieux FH, Rauch F. Genotype-phenotype correlations in autosomal dominant osteogenesis imperfecta. J Osteoporos 2011; 2011:540178. [PMID: 21912751 PMCID: PMC3170785 DOI: 10.4061/2011/540178] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Accepted: 07/04/2011] [Indexed: 11/25/2022] Open
Abstract
Osteogenesis imperfecta, discussed in Baldridge et al. 2008 is an inherited bone fragility disorder with a wide range of clinical severity that in the majority of cases is caused by mutations in COL1A1 or COL1A2, the genes that encode the two collagen type I alpha chains. Here we describe genotype-phenotype correlations in OI patients who have mutations affecting collagen type I. This paper is based on findings in a large single-centre OI population and a review of the literature.
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Affiliation(s)
- I. Mouna Ben Amor
- Shriners Hospital for Children and McGill University, Montreal, QC, Canada H3G 1A6
| | - Francis H. Glorieux
- Shriners Hospital for Children and McGill University, Montreal, QC, Canada H3G 1A6
| | - Frank Rauch
- Shriners Hospital for Children and McGill University, Montreal, QC, Canada H3G 1A6,*Frank Rauch:
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Chang JL, Brauer DS, Johnson J, Chen CG, Akil O, Balooch G, Humphrey MB, Chin EN, Porter AE, Butcher K, Ritchie RO, Schneider RA, Lalwani A, Derynck R, Marshall GW, Marshall SJ, Lustig L, Alliston T. Tissue-specific calibration of extracellular matrix material properties by transforming growth factor-β and Runx2 in bone is required for hearing. EMBO Rep 2010; 11:765-71. [PMID: 20847738 DOI: 10.1038/embor.2010.135] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 08/09/2010] [Accepted: 08/11/2010] [Indexed: 01/02/2023] Open
Abstract
Physical cues, such as extracellular matrix stiffness, direct cell differentiation and support tissue-specific function. Perturbation of these cues underlies diverse pathologies, including osteoarthritis, cardiovascular disease and cancer. However, the molecular mechanisms that establish tissue-specific material properties and link them to healthy tissue function are unknown. We show that Runx2, a key lineage-specific transcription factor, regulates the material properties of bone matrix through the same transforming growth factor-β (TGFβ)-responsive pathway that controls osteoblast differentiation. Deregulated TGFβ or Runx2 function compromises the distinctly hard cochlear bone matrix and causes hearing loss, as seen in human cleidocranial dysplasia. In Runx2+/⁻ mice, inhibition of TGFβ signalling rescues both the material properties of the defective matrix, and hearing. This study elucidates the unknown cause of hearing loss in cleidocranial dysplasia, and demonstrates that a molecular pathway controlling cell differentiation also defines material properties of extracellular matrix. Furthermore, our results suggest that the careful regulation of these properties is essential for healthy tissue function.
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Affiliation(s)
- Jolie L Chang
- Department of Otolaryngology, Head and Neck Surgery, University of California at San Francisco, San Francisco, California 94143, USA
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Cui YX, Xia XY, Shi YC, Wei L, Liang Q, Yao B, Ge YF, Huang YF, Li XJ. A G560S mutation in alpha1 (I) collagen causes familial osteogenesis imperfecta type IV. Clin Chim Acta 2009; 409:145-6. [PMID: 19751715 DOI: 10.1016/j.cca.2009.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 09/03/2009] [Accepted: 09/03/2009] [Indexed: 11/27/2022]
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Audiometric, surgical, and genetic findings in 15 ears of patients with osteogenesis imperfecta. Laryngoscope 2009; 119:1171-9. [DOI: 10.1002/lary.20155] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mnari W, Hafsa C, Salem R, Maatouk M, Golli M. L’ostéogenèse imparfaite, cause rare de surdité chez l’enfant. Arch Pediatr 2008; 15:1663-6. [DOI: 10.1016/j.arcped.2008.08.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2007] [Revised: 06/03/2008] [Accepted: 08/07/2008] [Indexed: 11/16/2022]
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Xia XY, Cui YX, Huang YF, Pan LJ, Yang B, Wang HY, Li XJ, Shi YC, Lu HY, Zhou YC. A novel RNA-splicing mutation in COL1A1 gene causing osteogenesis imperfecta type I in a Chinese family. Clin Chim Acta 2008; 398:148-51. [PMID: 18755172 DOI: 10.1016/j.cca.2008.07.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Revised: 07/28/2008] [Accepted: 07/31/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Osteogenesis imperfecta (OI), also known as brittle bone disease, is a rare heterogeneous group of inherited disorders characterized by low bone mass and increased bone fragility. The four major clinical criteria for diagnosis of OI are osteoporosis with abnormal fragility of the skeleton, blue sclera, dentinogenesis imperfecta, and premature otosclerosis. The presence of two of these abnormalities confirms the diagnosis. More than 90% patients have autosomal dominant mutations in one of the two genes, COL1A1 and COL1A2, that encode the alpha chains of type I collagen. While the diagnosis of OI is still based on clinical and radiological grounds, there is a growing demand for the molecular characterization of causative mutations. Although there have been several studies on the mutational spectra of COL1A1 and/or COL1A2 in Western populations, very few cases have been reported from Asia. The purpose of this study is to report two patients with OI type I in a Chinese family, who had a novel RNA-splicing mutation in COL1A1 gene and describe the molecular, radiological and clinical findings. METHODS The proband, (case II-5), a 32-y-old Chinese male, and his 7-y-old daughter were diagnosed as OI type I according to their clinical and radiological features. Genomic DNA was extracted from their blood samples and all promoters, exons and exon/intron boundaries of COL1A1 and COL1A2 genes were sequenced. Polymerase chain reaction sequence-specific primers (PCR-SSP) was used to confirm patients' heterozygous state. RESULTS Direct DNA sequencing analysis of COL1A1 gene revealed a splicing mutation (c.1875+1G>A, also as IVS 27+1G>A) that converted the 5' end of intron 27 from GT to AT. This mutation was found in both 2 affected individuals but 9 unaffected relatives and the 50 controls were not observed, which was consistent with the clinical diagnosis. This mutation (c.1875+1G>A) appeared to be novel, which is neither reported in literature nor registered in the Database of Collagen Mutations. The heterozygous states of patients' intron 27 were confirmed by PCR-SSP. CONCLUSION We identify a novel RNA-splicing mutation (c.1875+1G>A) in COL1A1 gene resulting in OI type I in a Chinese family. The detailed molecular and clinical features will be useful for extending the evidence for genetic and phenotypic heterogeneity in OI and exploring the phenotype-genotype correlations in OI.
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Affiliation(s)
- Xin-Yi Xia
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, 305 East Zhongshan Road, Nanjing 210002, PR China
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