inborn error of renal tubular transport pathway cystinuria pathway 2015-11-11T15:22:06Z An autosomal condition resulting from impaired epithelial transport of cystine and dibasic amino acids in the proximal renal tubule. It is further classified based on differences in the genetic basis of the disorder. PW:0002214 SMP:00723 cystinuria disease pathway pathway vpetri