Clinical Report: Diverse Clinical Presentations and Diagnostic Difficulties in Neurodevelopmental Disorders Associated with CASK
Overview
This study highlights the clinical variability and diagnostic challenges associated with CASK-related neurodevelopmental disorders. It reports on three pediatric patients with distinct phenotypes.
Background
CASK-related disorders represent a spectrum of X-linked neurodevelopmental disorders characterized by significant clinical and genetic heterogeneity. The variability in clinical presentation complicates diagnosis and management.
Data Highlights
No numerical data or trial data provided in the source material.
Key Findings
Two female patients with de novo loss-of-function CASK variants presented with MICPCH and developmental impairment.
A male patient with an inherited missense variant exhibited severe intellectual disability and drug-resistant epilepsy.
All patients demonstrated periods of developmental arrest or regression.
Marked intrafamilial phenotypic variability was observed among the patients.
Comprehensive genetic testing is essential for accurate diagnosis of CASK-related disorders.
Clinical Implications
CASK-related disorders should be considered in patients presenting with developmental delays, especially when accompanied by cerebral palsy-like features or postnatal growth retardation.
Conclusion
CASK-related disorders can manifest with a wide range of symptoms, necessitating a high index of suspicion for accurate diagnosis.
