Loss-of-function mutations in the melanocortin 4 receptor in a UK birth cohort
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Abstract
Mutations in the melanocortin 4 receptor gene (MC4R) are associated with obesity but little is known about the prevalence and impact of such mutations throughout human growth and development. We examined the MC4R coding sequence in 5,724 participants from the Avon Longitudinal Study of Parents and Children, functionally characterized all nonsynonymous MC4R variants and examined their association with anthropometric phenotypes from childhood to early adulthood. The frequency of heterozygous loss-of-function (LoF) mutations in MC4R was ~1 in 337 (0.30%), considerably higher than previous estimates. At age 18 years, mean differences in body weight, body mass index and fat mass between carriers and noncarriers of LoF mutations were 17.76 kg (95% CI 9.41, 26.10), 4.84 kg m-2 (95% CI 2.19, 7.49) and 14.78 kg (95% CI 8.56, 20.99), respectively. MC4R LoF mutations may be more common than previously reported and carriers of such variants may enter adult life with a substantial burden of excess adiposity.
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MC4R is the most commonly mutated gene in monogenic obesity.
“MC4R is the most commonly mutated gene in monogenic obesity (110).”
From Massively parallel functional genomic assays in endocrinology: from promise to delivery (2026) · cites this paper as [110]
The Introduction describes MC4R mutations in people with obesity and says obesity-associated mutations in leptin and its receptor are very rare. The Discussion estimates MC4R deficiency at about 1 in 340, but the paper does not compare MC4R with all other monogenic obesity genes or establish that it is the most commonly mutated. (LLM, conf=0.83)
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- Authors
- Wade, K. H., Lam, B. Y. H., Melvin, A., Pan, W., Corbin, L. J., Hughes, D. A., Rainbow, K., Chen, J.-H., Duckett, K., Liu, X., Mokrosiński, J., Mörseburg, A., Neaves, S., Williamson, A., Zhang, C., Farooqi, I. S., Yeo, G. S. H., Timpson, N. J., & O’Rahilly, S.
- Affiliations
- University of Bristol (GB)
- University of Cambridge (GB)
- Corresponding author
- Timpson, Nicholas J.
- O’Rahilly, Stephen
- ORCID
- Venue
- Nature Medicine
- Published
- 2021-05-27
- Volume
- 27
- Issue
- 6
- Pages
- 1088-1096
- ISSN
- 1078-8956 (ISSN-L)
- 1546-170X
- PMC
- PMC7611835
- OpenAlex
- W3164363802
- Cited by
- 133
- References
- 8
- Citations by year
- 2026: 19 · 2025: 35 · 2024: 26 · 2023: 17 · 2022: 23 · 2021: 13
- FWCI
- 10.30
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Locations
- Nature Medicine (publishedVersion)
- medRxiv (acceptedVersion, cc-by)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion, cc-by)
- Explore Bristol Research (acceptedVersion, other-oa)
- Apollo (University of Cambridge) (submittedVersion)
- Apollo
- Funders
- Wellcome Trust (202802/Z/16/Z, 095515/Z/11/Z, 208363/Z/17/Z, 204813/Z/16/Z, 098497/Z/12/Z)
- RCUK | Medical Research Council (MC_UU_00014/1, MC_UU_00014/5)
- RCUK | Biotechnology and Biological Sciences Research Council (BB/S017593/1)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
- Keywords
- melanocortin-4 receptor, obesity, adiposity, body mass index, fat mass, non-synonymous mutations, mutation prevalence, early adulthood, Avon Longitudinal Study of Parents and Children
- MeSH terms
- Loss of Function Mutation, Adolescent, Adult, Body Weight, Child, Child, Preschool, United Kingdom, Heterozygote, Humans, Infant, Infant, Newborn, Male, Obesity, Phenotype, Genetic Predisposition to Disease, Receptor, Melanocortin, Type 4, Young Adult
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