Genetic investigation of syndromic forms of obesity.
Int J Obes (Lond)
; 46(9): 1582-1586, 2022 09.
Article
en En
| MEDLINE
| ID: mdl-35597848
ABSTRACT
BACKGROUND:
Syndromic obesity (SO) refers to obesity with additional phenotypes, including intellectual disability (ID)/developmental delay (DD), dysmorphic features, or organ-specific abnormalities. SO is rare, has high phenotypic variability, and frequently follows a monogenic pattern of inheritance. However, the genetic etiology of most cases of SO has not been elucidated. SUBJECTS ANDMETHODS:
In this study, we investigated 20 SO patients by whole-exome sequencing (WES) trios to identify causal genetic variants.RESULTS:
4/20 patients had negative results for array comparative genomic hybridization (aCGH) analyses. In the remaining 15 patients, in addition to SNVs and indels, CNVs were also evaluated. Pathogenic/likely pathogenic (P/LP) SNVs/indels were detected in 6/20 patients (involving MED13L, AHDC1, EHMT1, MYT1L, GRIA3, and SETD1A), while two patients carried an inherited VUS. In addition, P/LP CNVs were observed in 3/15 patients (involving SATG2, KIAA0442, and MEIS2).CONCLUSIONS:
All nine detected P/LP variants involved genes already known to lead to syndromic ID/DD; however, for only two genes (EHMT1 and MYT1L) is the link with obesity well established. This is the first study applying a comprehensive genomic investigation of an SO cohort, showing a high diagnostic yield (~47%). Additionally, our findings suggested that several known ID/DD genes may also predispose individuals to SO.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Discapacidades del Desarrollo
/
Discapacidad Intelectual
Tipo de estudio:
Prognostic_studies
Límite:
Child
/
Humans
Idioma:
En
Revista:
Int J Obes (Lond)
Asunto de la revista:
METABOLISMO
Año:
2022
Tipo del documento:
Article
País de afiliación:
Brasil