GRK1

GRK1 analyzes genomic variants in the GRK1 gene to identify and characterize biallelic pathogenic and missense variants associated with Oguchi disease (congenital stationary night blindness).

Key Features:

• Variant Identification: Integrates whole-genome, whole-exome, or focused exome sequencing data from patients to identify published and novel biallelic pathogenic variants in GRK1 and compare them with non-disease-associated missense variants.
• Bioinformatics Analysis: Predicts the impact of GRK1 missense variants at the protein level using structure-based scoring to identify hotspots within the kinase domain.
• Clinical Interpretation Support: Evaluates multiple bioinformatics tools to distinguish pathogenic from non-pathogenic GRK1 variants for clinical interpretation.
• Database Integration: Systematically collates identified GRK1 pathogenic variants into the Leiden Open Variation Database (LOVD).

Scientific Applications:

• Pathogenic Mechanism Insights: Enables analysis of how specific GRK1 variants affect protein structure and function to inform molecular mechanisms underlying Oguchi disease.
• Research and Clinical Utility: Provides variant data and computational assessments useful for studies of GPCR signaling pathways and for clinical diagnosis and management of congenital stationary night blindness.

Methodology:

Sequencing of patient genomic DNA (whole-genome, whole-exome, or focused exome) to identify GRK1 variants, followed by in-depth bioinformatic analyses including structure-based scoring and computational prediction of missense variant pathogenicity, and collation of variants into the Leiden Open Variation Database (LOVD).