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FLASH GENE
Symbol XRCC3 contributors: mct/npt/pgu - updated : 28-11-2023
HGNC name X-ray repair complementing defective repair in Chinese hamster cells 3
HGNC id 12830
ASSOCIATED DISORDERS
corresponding disease(s)
Other morbid association(s)
TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
tumoral       loss of function
resulting in a defect in recombination and increased endoreduplication in cells , having a role in cancer susceptibility
constitutional     --low  
results in a dramatic decrease in mtDNA copy number as well as the complete suppression of a characteristic oxidative stress-induced copy number increase
tumoral germinal mutation      
germinal deleterious variants in the RAD51 paralogs to breast and ovarian cancers
Susceptibility
  • to myeloma for some htSNPs
  • to malignant melanoma, breast cancer,
  • to squamous cell carcinoma of head and neck
  • to colorectal cancer
  • to lung and colorectal cancer
  • to ovarian cancer risk
  • to late adverse effects induced by radiotherapy
  • Variant & Polymorphism
  • T241-M in breast cancer and melanoma
  • 241Met allele may be an effective biomarker for genetic susceptibility to colorectal cancer
  • XRCC3 241Met allele was associated with an increased risk of lung and colorectal cancer
  • XRCC3 rs1799794 polymorphisms, having a statistically significant correlation with ovarian cancer risk
  • XRCC3 rs1799794 polymorphism may have a protective effect against late adverse effects induced by radiotherapy
  • Candidate gene
    Marker
    Therapy target
    ANIMAL & CELL MODELS
  • Xrcc3 knockout mice exhibit midgestational lethality, with mild phenotypes beginning at about E8.25 but severe developmental abnormalities evident by E9.0-9.5