WDFY3 Haploinsufficiency Is Associated With Autosomal Dominant Neurodevelopmental Disorders and Macrocephaly.

Area of Science:

• Genetics
• Neurodevelopmental Biology
• Human Pathophysiology

Background:

• The WDFY3 gene (WD repeat domain 3) is implicated in neurodevelopmental disorders (NDDs).
• Allelic variations in WDFY3 can lead to diverse neurological phenotypes, including effects on brain size.
• Understanding WDFY3's role is crucial for diagnosing and managing NDDs.

Observation:

• This study presents a case involving a heterozygous nonsense variant in the WDFY3 gene.
• The patient exhibited mild-to-moderate neurodevelopmental disorders.
• Associated features included macrocephaly (abnormally large head) and unique facial characteristics.

Findings:

• The identified WDFY3 nonsense variant is associated with a specific spectrum of NDDs.
• The findings correlate WDFY3 mutations with both neurodevelopmental deficits and altered brain size (macrocephaly).
• This case underscores the phenotypic variability associated with WDFY3 gene defects.

Implications:

• Exome sequencing is a valuable diagnostic tool for identifying genetic causes of NDDs.
• Accurate genetic diagnosis of WDFY3-related disorders aids in clinical management and genetic counseling.
• Further research into WDFY3 function can elucidate mechanisms underlying neurodevelopment and brain size regulation.