Recessive mutations in DGKE cause atypical hemolytic-uremic syndrome

Nat Genet. 2013 May;45(5):531-6. doi: 10.1038/ng.2590. Epub 2013 Mar 31.


Pathologic thrombosis is a major cause of mortality. Hemolytic-uremic syndrome (HUS) features episodes of small-vessel thrombosis resulting in microangiopathic hemolytic anemia, thrombocytopenia and renal failure. Atypical HUS (aHUS) can result from genetic or autoimmune factors that lead to pathologic complement cascade activation. Using exome sequencing, we identified recessive mutations in DGKE (encoding diacylglycerol kinase ɛ) that co-segregated with aHUS in nine unrelated kindreds, defining a distinctive Mendelian disease. Affected individuals present with aHUS before age 1 year, have persistent hypertension, hematuria and proteinuria (sometimes in the nephrotic range), and develop chronic kidney disease with age. DGKE is found in endothelium, platelets and podocytes. Arachidonic acid-containing diacylglycerols (DAG) activate protein kinase C (PKC), which promotes thrombosis, and DGKE normally inactivates DAG signaling. We infer that loss of DGKE function results in a prothrombotic state. These findings identify a new mechanism of pathologic thrombosis and kidney failure and have immediate implications for treating individuals with aHUS.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Kidney Injury / genetics
  • Atypical Hemolytic Uremic Syndrome
  • Child
  • Child, Preschool
  • Diacylglycerol Kinase / genetics*
  • Exome / genetics
  • Female
  • Genes, Recessive / genetics*
  • Hemolytic-Uremic Syndrome / etiology*
  • Hemolytic-Uremic Syndrome / pathology
  • Humans
  • Immunoenzyme Techniques
  • Infant
  • Male
  • Molecular Sequence Data
  • Mutation / genetics*
  • Renal Insufficiency, Chronic
  • Thrombocytopenia / genetics
  • Thrombotic Microangiopathies / genetics


  • DGKE protein, human
  • Diacylglycerol Kinase

Associated data