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Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
A new homozygous pathogenic LEPR variant causing severe, early onset obesity in a Senegalese child
Virginie Deswarte1, Louis Lebreton1, Pascal Barat2
1Department of Biochemistry, Bordeaux University Hospital, Bordeaux, France.
Insights
A novel genetic mutation in the leptin receptor (LEPR) gene caused severe early-onset obesity and hyperphagia in a young child. This finding underscores the importance of genetic testing for monogenic obesity and personalized treatment strategies.
Area of Science:
- Genetics
- Pediatrics
- Endocrinology
Background:
- Early-onset obesity is a significant health concern with complex etiologies.
- Monogenic forms of obesity, though rare, play a crucial role in severe early-onset cases.
- Genetic factors influencing appetite regulation are critical in pediatric weight management.
Abstract:
We report the case of a three-year-old Senegalese child presenting with severe obesity and hyperphagia since birth. Despite normal birth parameters and non-consanguineous parents with average BMI, the child exhibited rapid weight gain, surpassing obesity thresholds before the age of one. Genetic analysis revealed a novel homozygous variant in the LEPR gene (c.3190 G>T; p.(Glu1064Ter)). Functional assays demonstrated impaired leptin receptor signaling due to this truncating mutation. This case highlights the importance of considering monogenic causes in early-onset obesity. Identifying specific mutations enables the proposal of targeted therapies and the adaptation of clinical management.
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