Almansoori, Sumaya and Alsters, Suzanne I. and Yiorkas, Andrianos M. and Nor Hashim, Nikman Adli and Walters, Robin G. and Chahal, Harvinder S. and Purkayastha, Sanjay and Lessan, Nader and Blakemore, Alexandra I. F. (2024) Oligogenic inheritance in severe adult obesity. International Journal of Obesity, 48 (6). pp. 815-820. ISSN 0307-0565, DOI https://doi.org/10.1038/s41366-024-01476-9.
Full text not available from this repository.Abstract
Background/objectiveThe genetic architecture of extreme non-syndromic obesity in adults remains to be elucidated. A range of genes are known to cause monogenic obesity, but even when pathogenic mutations are present, there may be variable penetrance.MethodsWhole-exome sequencing (WES) was carried out on a 15-year-old male proband of Pakistani ancestry who had severe obesity. This was followed by family segregation analysis, using Sanger sequencing. We also undertook re-analysis of WES data from 91 unrelated adults with severe obesity (86% white European ancestry) from the Personalised Medicine for Morbid Obesity (PMMO) cohort, recruited from the UK National Health Service.ResultsWe identified an oligogenic mode of inheritance of obesity in the proband's family-this provided the impetus to reanalyze existing sequence data in a separate dataset. Analysis of PMMO participant data revealed two further patients who carried more than one rare, predicted-deleterious mutation in a known monogenic obesity gene. In all three cases, the genes involved had known autosomal dominant inheritance, with incomplete penetrance.ConclusionOligogenic inheritance may explain some of the variable penetrance in Mendelian forms of obesity. We caution clinicians and researchers to avoid confining sequence analysis to individual genes and, in particular, not to stop looking when the first potentially-causative mutation is found.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Oligogenic inheritance; adult; obesity |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history |
| Divisions: | Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Nov 2024 01:09 |
| Last Modified: | 11 Nov 2024 01:09 |
| URI: | http://eprints.um.edu.my/id/eprint/45714 |
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