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Polycystic kidney disease complicates renal pathology in a family with Fabry disease


Fabry disease is a rare lysosomal storage disorder that primarily affects the heart and kidneys, often presenting with reduced renal function. Polycystic kidney disease is a renal condition in which cysts are found, which have a different presentation than the cysts associated with Fabry disease. We report a 60-year-old male patient who was diagnosed with Fabry disease with the classic c.730G > A (p.Asp244Asn) variant of the GLA gene at 34 years of age. Fabry symptoms in this patient include hypohidrosis, hearing loss, corneal whorling, and edema. He also presented with polycystic kidney disease with multiple simple and mildly complex cysts on abdominal ultrasound. Family history of note included Fabry disease in his mother and maternal uncle as well as polycystic kidneys in his mother. Molecular analysis for polycystic kidney disease revealed a variant of uncertain significance (VUS) in the PKD1 gene. Although the in silico studies of this VUS have inconclusive results, the patient fills clinical criteria of autosomal dominant polycystic kidney disease, therefore, Fabry disease and polycystic kidney disease are considered two co-existing manifestations in this family. This case demonstrates the possibility of two renal comorbidities in the same individual and the risk of one diagnosis being overlooked by the other.

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