gene CGG repeat distribution among the three individual cohorts with intellectual disability, autism, and primary ovarian insufficiency from Tamil Nadu, Southern India.

Fragile X syndrome is the most common genetic cause of intellectual disability (ID) and is also well known to have a role in primary ovarian insufficiency (POI) and fragile X-associated tremor ataxia syndrome (FXTAS) that expresses across generations. The objective was to compare the CGG repeat variants in gene among three correlating cohorts of ID, autism and idiopathic POI. Thirty-six patients with ID, 12 with autism spectrum disorder (ASD) and 13 females with idiopathic POI were screened for CGG repeat size by fluorescent methylation-specific PCR and GeneScan analysis, irrespective of Hagerman checklist clinical scores.

Genetic analysis of SLC26A4 gene (pendrin) related deafness among a cohort of assortative mating families from southern India.

Purpose: Assortative mating (AM) or preferential mating is known to influence the genetic architecture of the hearing-impaired (HI) population. AM is now seen as a universal phenomenon with individuals seeking partners based on quantitative, qualitative, and behavioral phenotypes. However, the molecular genetic dynamics of AM among the HI tested in real time are limited to the DFNB1 locus.