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Primary hyperoxaluria type 2

Other Names for this Disease
  • D-glycerate dehydrogenase deficiency
  • Glyceric aciduria
  • Glyoxylate reductase/hydroxypyruvate reductase deficiency
  • HP2
  • Oxalosis 2
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Primary hyperoxaluria type 2  is a rare condition characterized by the overproduction of a substance called oxalate (also called oxalic acid). In the kidneys, the excess oxalate combines with calcium to form calcium oxalate, a hard compound that is the main component of kidney stones. Deposits of calcium oxalate can lead to kidney damage, kidney failure, and injury to other organs. Primary hyperoxaluria type 2 is caused by the shortage (deficiency) of an enzyme called glyoxylate reductase/hydroxypyruvate reductase (GRHPR) that normally prevents the buildup of oxalate. This enzyme shortage is caused by mutations in the GRHPR gene. Primary hyperoxaluria type 2 is inherited in an autosomal recessive pattern.[1]
Last updated: 1/3/2013


  1. Primary hyperoxaluria. Genetics Home Reference (GHR). January 2008; Accessed 1/2/2013.
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  • Genetics Home Reference (GHR) contains information on Primary hyperoxaluria type 2. This website is maintained by the National Library of Medicine.

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  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
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