Study of the Value of Trio Exome Sequencing in the Etiological Assessment of Specific Non-syndromic Language and Learning Disorders

Specific language and learning disorders (SLLD) affect around 5-10% of school-aged children, or 1-2 child(ren) per class. SLLDs correspond to the impairment of a specific cognitive function and are divided into 5 categories: dyslexia, dysphasia, dyspraxia, dyscalculia and attention deficit hyperactivity disorder (ADHD) (DSM-5). In recent years, real progress has been made in their clinical diagnosis and management, thanks to a better description of these disorders in the DSM-5 and the advent of rehabilitative treatments (neuropsychology, speech therapy, occupational therapy, orthoptics, etc.). SLLD can occur in a sporadic or familial context (sibling involvement, a symptomatic parent, other relatives who may mimic dominant inheritance with variable expressivity and incomplete penetrance). It has long been suspected that SLLD is secondary to multifactorial inheritance, with a combination of frequent genetic variations and environmental factors. In France, in the absence of an obvious syndromic diagnosis, the current strategy is to prescribe array CGH, combined in girls with a search for fragile X syndrome (in boys, this syndrome leads to systematic intellectual disability, which does not justify its study in SLLD). A few genes have been described as being specifically involved in a small proportion of SLLD, most often with de novo variations or inherited from a symptomatic parent. There are no distinctive clinical features to guide targeted sequencing of these genes. Moreover…

This description comes directly from the study's public registry record.

Julian DELANNE  ·  03 80 29 53 13  ·  julian.delanne@chu-dijon.fr

Always discuss trial participation with your own doctor first.

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.