Thrombocytosis in an infant with a TRPV4 mutation: a case report

Platelets. 2021 Apr 3;32(3):429-431. doi: 10.1080/09537104.2020.1755644. Epub 2020 Apr 22.


Mutations in the calcium channel gene Transient Receptor Potential cation channel subfamily V member 4 (TRPV4) cause autosomal dominant skeletal dysplasia, with phenotypes ranging from mild to perinatal lethality. A recent report detailed enhanced proplatelet formation and increased murine platelet count in the context of TRPV4 activation. No prior reports have described platelet count abnormalities in human TRPV4 disease. Here, we report a case of prolonged thrombocytosis in the context of TRPV4-associated metatropic dysplasia that was lethal in the infantile period.

Keywords: Calcium channel; TRPV4; skeletal dysplasia; thrombocytosis.

Publication types

  • Case Reports

MeSH terms

  • Female
  • Humans
  • Infant
  • TRPV Cation Channels / metabolism*
  • Thrombocytosis / genetics*
  • Thrombocytosis / pathology


  • TRPV Cation Channels
  • TRPV4 protein, human