primary hyperoxaluria type 2
Primary hyperoxaluria (PH) type 2 is a rare disorder of glyoxylate metabolism caused by the deficiency of the enzyme glyoxylate reductase/hydropyruvate reductase (GR/HPR) characterized by a childhood onset with clinical manifestations that include recurrent nephrolithiasis, nephrocalcinosis and end-stage renal disease with subsequent systemic oxalosis.