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Updated: Mar 13, 2026

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KRIT1 mutations in three Japanese pedigrees with hereditary cavernous malformation

Kengo Hirota1, Hiroyuki Akagawa2, Asami Kikuchi3

  • 1Department of Neurosurgery, Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan.

Human Genome Variation
|October 22, 2016
PubMed

Insights

Researchers identified three KRIT1 gene mutations in Japanese families with cerebral cavernous malformations (CCMs). These findings advance understanding of genetic causes for this neurovascular disorder.

Area of Science:

  • Neuroscience
  • Genetics
  • Vascular Biology

Background:

  • Cerebral cavernous malformations (CCMs) are neurovascular abnormalities.
  • CCMs can lead to seizures, focal neurological deficits, and intracerebral hemorrhage.
  • Familial CCMs involve multiple lesions and autosomal dominant inheritance through CCM1/KRIT1, CCM2/MGC4607, and CCM3/PDCD10 genes.

Purpose of the Study:

  • To identify genetic mutations in Japanese families with CCMs.
  • To investigate the role of KRIT1 gene mutations in the pathogenesis of CCMs.

Main Methods:

  • Genetic analysis of three Japanese families with CCMs.
  • Identification and characterization of truncating mutations in the KRIT1 gene.

Main Results:

  • Three truncating mutations in the KRIT1 gene were identified in the studied families.
  • These included a novel frameshift mutation, a known frameshift mutation, and a known splice-site mutation.
  • The splice-site mutation's potential for aberrant splicing was noted for further analysis.

Conclusions:

  • The study identified specific KRIT1 mutations in Japanese families with CCMs.
  • These findings contribute to the genetic understanding of cerebral cavernous malformations.
  • Further investigation into the functional impact of these KRIT1 mutations is warranted.

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