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EGFR-exon 19 insertions

Friday 28 June 2013

EGFR-exon 19 insertion

Epidermal growth factor receptor (EGFR) genotyping is now standard in the management of advanced lung adenocarcinoma, as this biomarker predicts marked benefit from treatment with EGFR tyrosine kinase inhibitors (TKI).

EGFR exon 19 insertions are a poorly described family of EGFR mutations, and their association with EGFR-TKI sensitivity in lung adenocarcinoma is uncertain.

EGFR exon 19 insertions are a newly appreciated family of EGFR-TKI-sensitizing mutations, and patients with tumors harboring these mutations should be treated with EGFR-TKI.

While these mutations may be missed through the use of some mutation-specific assays, the addition of PCR product size analysis to multigene assays allows sensitive detection of both exon 19 insertion and deletion mutations.

Open References

- EGFR exon 19 insertions: a new family of sensitizing EGFR mutations in lung adenocarcinoma. He M, Capelletti M, Nafa K, Yun CH, Arcila ME, Miller VA, Ginsberg MS, Zhao B, Kris MG, Eck MJ, J√§nne PA, Ladanyi M, Oxnard GR. Clin Cancer Res. 2012 Mar 15;18(6):1790-7. doi : 10.1158/1078-0432.CCR-11-2361 PMID: 22190593