Acta oncologica (Stockholm, Sweden) · 2021
Purchase of prophylactic topical corticosteroids is associated with improved survival in NSCLCs treated with EGFR TKI: real-world cohort study.
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Alanen Virve, Iivanainen Sanna, Arffman Martti, Koivunen Jussi P
Аннотация
BACKGROUND: With the first- and second-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs), clinical benefit and rash correlate together. EGFR TKI-induced rash can be alleviated with topical corticosteroids and tetracyclines. This study investigates whether prophylaxis with topical corticosteroids is associated with improved survival among the EGFR TKI-treated non-small cell lung cancers (NSCLCs).
MATERIAL AND METHODS: We collected all the patients (n = 1271) who had received reimbursement for the first- or second-generation EGFR TKIs in Finland 2011-2016, had purchased TKIs, and had data available at the Finnish Cancer Registry (FCR). Survival was analyzed from the first EGFR TKI purchase to death or the end of follow-up, and patients were stratified according to the TKIs, purchases of topical corticosteroids, and their timing.
RESULTS: A total of 270 (21%) patients had corticosteroid purchases -14 to +200 d (all), and 196 (15%) had purchased corticosteroids as prophylaxis (-14 to +14 d) from the first EGFR TKI purchase. Corticosteroid purchases were associated with improved survival in all (0.64 95% CI 0.56-0.74) and prophylactic (0.78, 95% CI 0.66-0.92) groups when compared to non-purchasers, although these results were limited to the erlotinib users only. The survival benefit of prophylactic corticosteroids among the erlotinib users remained in multivariate analysis including sex, stage, histology, and tetracycline prophylaxis (HR 0.78, 95% CI 0.64-0.95). The prophylactic use of corticosteroids was associated with a longer erlotinib treatment duration (HR 0.75, 95% CI 0.64-0.90).
CONCLUSIONS: Prophylactic topical corticosteroids may improve the survival of NSCLC patients treated with EGFR TKIs, and they should be considered as prophylaxis when initiating EGFR TKIs with a high incidence of rash.
MATERIAL AND METHODS: We collected all the patients (n = 1271) who had received reimbursement for the first- or second-generation EGFR TKIs in Finland 2011-2016, had purchased TKIs, and had data available at the Finnish Cancer Registry (FCR). Survival was analyzed from the first EGFR TKI purchase to death or the end of follow-up, and patients were stratified according to the TKIs, purchases of topical corticosteroids, and their timing.
RESULTS: A total of 270 (21%) patients had corticosteroid purchases -14 to +200 d (all), and 196 (15%) had purchased corticosteroids as prophylaxis (-14 to +14 d) from the first EGFR TKI purchase. Corticosteroid purchases were associated with improved survival in all (0.64 95% CI 0.56-0.74) and prophylactic (0.78, 95% CI 0.66-0.92) groups when compared to non-purchasers, although these results were limited to the erlotinib users only. The survival benefit of prophylactic corticosteroids among the erlotinib users remained in multivariate analysis including sex, stage, histology, and tetracycline prophylaxis (HR 0.78, 95% CI 0.64-0.95). The prophylactic use of corticosteroids was associated with a longer erlotinib treatment duration (HR 0.75, 95% CI 0.64-0.90).
CONCLUSIONS: Prophylactic topical corticosteroids may improve the survival of NSCLC patients treated with EGFR TKIs, and they should be considered as prophylaxis when initiating EGFR TKIs with a high incidence of rash.