Coexistence of Rare Genetic Disorders in a Consanguineous Family: Case Study of KLHL24-Related Hypertrophic Cardiomyopathy and Char Syndrome.

INTRODUCTION

Physicians often search for a single underlying cause that explains all of a patient's signs and symptoms. However, evidence from the literature suggests that the concurrent presence of two rare diseases, although uncommon, poses significant diagnostic challenges. Precision medicine is increasingly important in these scenarios, enabling more rapid diagnosis and tailored treatments.

CASE PRESENTATION

This report discusses a patient involving a consanguineous Brazilian family, where two sisters are diagnosed with autosomal recessive -related hypertrophic cardiomyopathy. Additionally, one sister is diagnosed with Char syndrome due to a deletion.

CONCLUSION

This case underscores the possibility that multiple rare genetic disorders can coexist, contributing to complex clinical phenotypes. Whole-exome sequencing proves to be a critical tool in identifying the genetic underpinnings of such complex cases, facilitating precise diagnosis and genetic counseling. The discovery of a homozygous variant further broadens the known mutation spectrum and underscores its significance in autosomal recessive hypertrophic cardiomyopathy.