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Association details:
| Biomarker: | EGFR G719X |
|---|---|
| Cancer: | Non Small Cell Lung Cancer |
| Drug: | gefitinib (EGFR inhibitor) |
| Direction: | Sensitive |
Evidence:
Source:
Published date:
03/16/2022
Excerpt:
The NCCN NSCLC Panel has preference stratified the systemic therapy regimens and decided that afatinib or osimertinib are preferred options for patients with metastatic NSCLC and EGFR L861Q, G719X, and S768I mutation; other recommended options include erlotinib, gefitinib, dacomitinib.
Source:
Title:
Selumetinib in Combination With Gefitinib in NSCLC Patients
Excerpt:
...A tumor harboring an EGFR mutation known to be associated with drug sensitivity (ie, exon 19 deletion , L858R, L861Q, G719X etc.)....
Source:
Title:
145P - UpSwinG: real-world, non-interventional cohort study on TKI activity in patients (pts) with EGFR mutation-positive (EGFRm+) NSCLC with uncommon mutations
Published date:
03/17/2021
Excerpt:
Uncommon mutation categories were: major uncommon (G719X, L861Q, S768I; 73%); compound (35%); ex20ins (12%); T790M (7%); other (9%). Most pts (n = 226; 92%) were treated in 1st-line with an EGFR TKI; 132 (54%), 70 (28%), 35 (14%) and 7 (3%) received afatinib, gefitinib, erlotinib and osimertinib....Overall median OS was 24.4 mos....ORR was 42% overall (major: 50%; compound: 49%; other: 44%; T790M: 20%; ex20ins: 17%); afatinib: 44% (DoR: 12.0 mos); 1st-gen TKIs: 44% (DoR: 11.0 mos)....Response was highest in pts with major uncommon, and/or compound mutations.
Trial ID:
Source:
Title:
Treatment and Outcomes of Metastatic Non-Small-Cell Lung Cancer Harboring Uncommon EGFR Mutations: Are They Different from Those with Common EGFR Mutations?
Published date:
10/07/2020
Excerpt:
...EGFR mutation-positive NSCLC received first-generation (1G, gefitinib or erlotinib) or 2G EGFR-TKI (afatinib) as the first-line (1L) systemic therapy....The objective response rate (ORR) for the 1L EGFR-TKI was 63.3%. The median progression-free survivals (PFSs) were 8.6 months (95% CI: 3.8-13.5), 11.7 months (95% CI: 6.6-16.7), 7.7 months (95% CI: 4.9-17.4), and 5.0 months (95% CI: 3.7-6.1) for major uncommon EGFR mutation (G719X, L861Q), compound mutation with major EGFR mutation (Del 19 or EGFR exon 21 p.L858R), other compound mutation, and other uncommon mutations, respectively.
DOI:
10.3390/biology9100326
Source:
Title:
502P - Epidermal growth factor receptor tyrosine kinase inhibitor treatment response in advanced non-small cell lung cancer with uncommon mutations: A multicenter observational study
Published date:
11/23/2019
Excerpt:
Moreover, the PFS of patients with the G719X mutation (n = 12, median PFS: 32.9 months) was longer than that of patients with the L861Q mutation (n = 4, median PFS: 11.1) and compound mutations (n = 4, median PFS 7.3 months)….First and second generation EGFR-TKIs are effective treatments for patients with NSCLC with uncommon mutations. Notably, a greater favorable response was observed in patients with G719X mutations than those with L861Q and compound mutations.
Source:
Title:
Effectiveness of Tyrosine Kinase Inhibitors in Japanese Patients with Non-small Cell Lung Cancer Harboring Minor Epidermal Growth Factor Receptor Mutations: Results from a Multicenter Retrospective Study (HANSHIN Oncology Group 0212)
Excerpt:
Out of 56 patients with minor mutations of the EGFR gene, 44 were treated with either gefitinib or erlotinib. Mutation sites were G719X in exon 18 (n=35), L861Q in exon 21 (n=11), and G874S in exon 21 (n=1). Three patients had both the G719S and the L861Q mutation....Treatment with first-generation EGFR-TKIs, in particular erlotinib, may be considered a first- or second-line option for patients with NSCLC with minor EGFR mutations.
