Familial Rare EGFR-mutant Lung Cancer Syndrome: Review of Literature and Description of R776H Family
Lung cancer (Amsterdam, Netherlands)(2024)
Abstract
BackgroundInterest in hereditary lung cancer is increasing, in particular germline mutations in the Epidermal Growth Factor Receptor (EGFR) gene. We review the current literature on this topic, discuss risk of developing lung cancer, treatment and screening options and describe a family of 3 sisters with lung cancer and their unaffected mother all with a rare EGFR germline mutation (EGFR p.R776H).MethodsWe searched PubMed, Medline, Embase, the Cochrane Library, Google Scholar and scanned reference lists of articles. Search terms included “EGFR germline” and “familial lung cancer” or “EGFR familial lung cancer”. We also describe our experience of managing a family with rare germline EGFR mutant lung cancer.ResultsAlthough the numbers are small, the described cases in the literature show several similarities. The patients are younger and usually have no or light smoking history. 50% of the patients were treated with a tyrosine kinase inhibitor (TKIs) with OS over six months.ConclusionAlthough rare, germline p.R776H EGFR lung cancer mutations are over-represented in light or never smoking female patients who often also possess an additional somatic EGFR mutation. Treatment with TKIs appears suitable but further research is needed into the appropriate screening regime for unaffected carriers or light/never smokers.
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Key words
EGFR,Germline,Lung cancer,Familial,Tyrosine kinase inhibitor,Genetics
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