Jacob, Prince and Singh, Swati and Bhavani, Gandham Srilakshmi and Gowrishankar, Kalpana and Narayanan, Dhanya Lakshmi and Nampoothiri, Sheela and Patil, Siddaramappa Jagdish and Soni, Jai Prakash and Muranjan, Mamta N. and Kapoor, Seema and Dhingra, Bhavana and Bhat, Ballambattu Vishnu and Bajaj, Shruti and Banerjee, Amrita and Mamadapur, Mahabaleshwar and Sankar, Vaikom Hariharan and Kamath, Nutan and Shenoy, Rathika Damodara and Suri, Deepti and Shukla, Anju and Dalal, Ashwin Bhikaji and Phadke, Shubha Rao and Nishimura, Gen and Mortier, Geert R. and Shah, Hitesh Hasmukhlal and Girisha, Katta Mohan (2025) Genetic and allelic heterogeneity in 248 Indians with skeletal dysplasia. European Journal of Human Genetics, 33 (5). 607 - 613. ISSN 10184813; 14765438
Full text not available from this repository.Abstract
Skeletal dysplasias are a clinically and genetically heterogeneous group of rare disorders. Studies from large cohorts are essential to provide insights into the disease epidemiology, phenotypic spectrum, and mutational profiles. Here we enumerate additional 248 Indians from 197 families with a skeletal dysplasia, following a similar study earlier. We achieved a clinical-molecular diagnosis in 145 families by targeted analysis in 37 and next generation sequencing (exomes and genomes) in 108 families that resulted in a diagnostic yield of 73.6% (145 of 197 families). We identified 149 causal variants, of which 85 were novel, across 73 genes. Eighty-one distinct monogenic forms of skeletal dysplasia were observed with a high proportion of autosomal recessive skeletal dysplasias (60%, 84 families). We observed consanguinity in 35% of the families. Lysosomal storage diseases with skeletal involvement, FGFR3-related skeletal dysplasia and disorders of bone mineralisation were most frequent in this cohort. We expand the phenotypic and genotypic spectrum of rarely reported conditions (RAB33B, TRIP11, NEPRO, RPL13, COL27A1, PTHR1, EXOC6B, PRKACA, FUZ and RSPRY1) and noted novel gene-disease relationships for PISD, BNIP1, TONSL, CCN2 and SCUBE3 related skeletal dysplasia. We successfully implemented genomic testing for skeletal dysplasia in clinical and research settings. Our study provides valuable information on the spectrum of skeletal dysplasia and disease-causing variants for Asian Indians. © 2025 Elsevier B.V., All rights reserved.
| Item Type: | Article |
|---|---|
| Additional Information: | Cited by: 1; All Open Access; Green Accepted Open Access; Green Open Access |
| Uncontrolled Keywords: | connective tissue growth factor; allele; Article; Asian; bnip1; bone disease; bone dysplasia; bone mineralization; cohort analysis; col27a1; congenital disorder; consanguinity; controlled study; diagnostic test; diagnostic value; evaluation study; exoc6b; exome; female; fuz; gene; genetic heterogeneity; genome; genotype; high throughput sequencing; human; Indian; lysosome storage disease; major clinical study; male; molecular diagnosis; monogenic disorder; nepro; phenotype; pisd; prkaca; pthr1; rab33b; radiology; rpl13; rspry1; scube3; skeleton; spectrum; study design; tonsl; trip11; child; chondrodysplasia; genetics; India; mutation; Alleles; Bone Diseases, Developmental; Child; Female; Genetic Heterogeneity; Humans; Male; Mutation; Osteochondrodysplasias; Phenotype |
| Subjects: | Biochemistry, Genetics and Molecular Biology > Molecular Biology |
| Divisions: | Medicine > Vinayaka Mission's Kirupananda Variyar Medical College and Hospital, Salem > Medicine |
| Depositing User: | Unnamed user with email techsupport@mosys.org |
| Date Deposited: | 26 Nov 2025 10:17 |
| Last Modified: | 26 Nov 2025 10:17 |
| URI: | https://vmuir.mosys.org/id/eprint/186 |
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