Clinical Report: Discovery of a CRYGD Variant Linked to Congenital Cataract
Overview
This report describes a family with congenital cataract linked to a CRYGD variant, specifically c.391T>C (p.Trp131Arg). The variant was found to co-segregate with the disease phenotype in affected family members, although it remains classified as a variant of uncertain significance.
Background
Congenital cataract is a significant cause of childhood visual impairment, with genetic factors playing a crucial role in its etiology. The identification of pathogenic variants is essential for accurate diagnosis and genetic counseling. This case highlights the importance of whole-exome sequencing in uncovering genetic causes of congenital cataract.
Data Highlights
No numerical data or trial data presented in the article.
Key Findings
A CRYGD c.391T>C (p.Trp131Arg) variant was identified in a boy with congenital cataract.
The variant co-segregated with the disease phenotype in affected family members.
Other variants identified by WES showed less consistent segregation patterns.
The CRYGD variant is classified as a variant of uncertain significance according to ACMG criteria.
CRYGD exhibits lens-enriched expression, supporting its role in lens biology.
Clinical Implications
The findings underscore the utility of whole-exome sequencing in identifying genetic variants associated with congenital cataract. Genetic counseling may be informed by the segregation patterns of identified variants within families.
Conclusion
This case contributes to the understanding of genetic factors in congenital cataract and highlights the need for further functional studies to clarify the pathogenic significance of the identified CRYGD variant.
