Renal tubular dysgenesis

Autosomal recessive renal tubular dysgenesis (RTD) is a rare lethal disorder characterized by the absence or incomplete differentiation of proximal tubules. Patients present persistent fetal anuria leading to oligohydramnios sequence. Homozygous or compound heterozygous mutations in the genes encoding renin, angiotensinogen, angiotensin converting enzyme or angiotensin II receptor type 1 may cause RTD. These genes are renin-angiotensin system components which regulate renal growth during embryogenesis.