End-of-Life Care in Patients with Metastatic Lung Cancer Harboring Epidermal Growth Factor Receptor Mutations.

BACKGROUND/OBJECTIVE: Patients with metastatic nonsmall cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR) mutations benefit from improved survival and quality of life with EGFR-directed therapy. We sought to explore if these improvements in cancer care impacted the delivery of end-of-life (EOL) care in this population. DESIGN: We retrospectively reviewed medical records of patients cared for at our institution with the diagnosis of metastatic EGFR-mutant NSCLC who died by January 2015. RESULTS: Sixty-one patients were included. The majority of patients were female (68%), white or Asian (97%), and never or minimal smokers (76%). Forty-two out of fifty-eight patients (72%) received chemotherapy within 30 days of death. Forty-one out of sixty-one patients (67%) had a hospital admission within 30 days of death. EOL outcomes were known for 53 patients. Of these, 34 (64%) patients enrolled on hospice. The median length of stay on hospice was 6 days (range 0-206). Thirty-three (62%) patients died at home with hospice services or at an inpatient hospice facility. Eighteen patients (34%) died in the hospital. CONCLUSION: Patients with metastatic NSCLC harboring EGFR mutations had high rates of chemotherapy use and hospital admissions in the last month of life, and many died in the hospital. Hospital admissions near the EOL and short admissions to hospice are indicators of poor quality EOL care and are likely a result of prolonged chemotherapy administration in this population. Thus, current healthcare delivery models may be insufficient to provide comprehensive EOL care for patients with EGFR mutations.

The prognostic impact of KRAS, its codon and amino acid specific mutations, on survival in resected stage I lung adenocarcinoma.

BACKGROUND: Despite complete surgical resection, patients with stage I non-small-cell lung cancer (NSCLC) are at risk for disease recurrence. The impact of common oncogenic driver mutations on prognosis in stage I NSCLC is limited. The pure prognostic value of KRAS mutational status was explored in resected stage I lung adenocarcinoma. METHODS: Mutation status was tested in patients who had complete resection of stage I lung adenocarcinoma without any adjuvant therapy, using a multiplex polymerase chain reaction)-based assay. Disease-free survival (DFS) and overall survival (OS) were compared between patients with KRAS-mutant (KRAS-MUT), KRAS-MUT subtypes, and KRAS wild-type (KRAS-WT) tumors. RESULTS: A total of 312 patients were included in this analysis; 127 harbored KRAS mutations and 185 had KRAS-WT tumors. When compared with KRAS-WT, KRAS-MUT was associated with significantly shorter OS (hazard ratio 4.36, 95% confidence interval 2.09-9.07; p < 0.0001) and DFS (hazard ratio 3.62, 95% confidence interval 2.11-6.22; p < 0.0001). When stratifying KRAS-WT patients based on EGFR status, KRAS-MUT patients had worse OS (p = 0.0001) and DFS (p < 0.0001) than patients with EGFR-MUT and EGFR-WT/KRAS-WT (WT/WT). Patients with codon 12 mutations had superior DFS (p = 0.0314), but there were no differences in OS compared with mutations found in codons 13 and 61 (p = 0.1772). We observed better DFS associated with G12C/G12V mutations compared with other amino acid specific KRAS mutations (p = 0.0271) with a trend towards improved OS (p = 0.0636). Multivariate analysis identified KRAS mutation as independent predictor of worse OS (p = 0.001) and DFS (p < 0.0001). CONCLUSION: KRAS is an independent prognostic marker in resected stage I lung adenocarcinoma. Differential outcomes are associated with codon and amino acid specific KRAS mutations.