CLCN5 and nephrolithiasis: Incomplete Fanconi syndrome is noted in Dent disease 1, which is due to inactivating mutations in the CLCN5 gene encoding for CIC-5 expressed in proximal renal tubules, resulting in low molecular weight proteinuria associated with hypercalciuria, nephrolithiasis, and often, renal phosphate wasting and impaired urinary acidification, resulting in rickets [70].