Retinal Ciliopathy in the Patient with Transplanted Kidney: Case Report

Area of Science:

• Genetics
• Ophthalmology
• Nephrology

Background:

• The RP1 gene is known to cause retinitis pigmentosa, a form of retinal degeneration.
• RP1 protein is also expressed in the kidneys, but its role in renal function and hypertension is not well understood.

Observation:

• A kidney transplant patient with a history of erythrocyturia, malignant hypertension, and chronic renal failure was diagnosed with a mutation in the RP1 gene (RP1c.2029C>T, p. (ARG677*)).
• This mutation was previously exclusively linked to non-syndromic retinitis pigmentosa.

Findings:

• The study identified a rare RP1 gene mutation in a patient with co-existing renal disease and hypertension.
• This challenges the established view that RP1 mutations solely affect retinal photoreceptor function.

Implications:

• The findings suggest a potential role for RP1 gene mutations in the development of hypertension and chronic kidney disease.
• Further research is needed to elucidate the mechanism by which RP1 dysfunction impacts renal and vascular health, potentially involving primary cilia mechanosensory functions.