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Joubert syndrome with renal defect
Joubert syndrome with renal defect is a rare subtype of Joubert syndrome and related disorders (JSRD, see this term) characterized by the neurological features of JS associated with renal disease, in the absence of retinopathy.
ORPHA:220497Classification level: Disorder
Prevalence is unknown.
In most cases, renal disease manifests as juvenile nephronophthisis, with onset of clinical symptoms in the late first/early second decade of life, although in rare cases there may be infantile NPH, with onset in the first years of life.
The most commonly mutated genes in this subtype are NPHP1 (2q13) and RPGRIP1L (16q12.2) with autosomal recessive inheritance.