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JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL

Intercalated combination of chemotherapy and erlotinib for patients with advanced stage non-small-cell lung cancer (FASTACT-2): a randomised, double-blind trial

Yi-Long Wu, Jin Soo Lee, Sumitra Thongprasert, Chong-Jen Yu, Li Zhang, Guia Ladrera, Vichien Srimuninnimit, Virote Sriuranpong, Jennifer Sandoval-Tan, Yunzhong Zhu, Meilin Liao, Caicun Zhou, Hongming Pan, Victor Lee, Yuh-Min Chen, Yan Sun, Benjamin Margono, Fatima Fuerte, Gee-Chen Chang, Kasan Seetalarom, Jie Wang, Ashley Cheng, Elisna Syahruddin, Xiaoping Qian, James Ho, Johan Kurnianda, Hsingjin Eugene Liu, Kate Jin, Matt Truman, Ilze Bara, Tony Mok
Lancet Oncology 2013, 14 (8): 777-86
23782814

BACKGROUND: The results of FASTACT, a randomised, placebo-controlled, phase 2 study, showed that intercalated chemotherapy and erlotinib significantly prolonged progression-free survival (PFS) in patients with advanced non-small-cell lung cancer. We undertook FASTACT-2, a phase 3 study in a similar patient population.

METHODS: In this phase 3 trial, patients with untreated stage IIIB/IV non-small-cell lung cancer were randomly assigned in a 1:1 ratio by use of an interactive internet response system with minimisation algorithm (stratified by disease stage, tumour histology, smoking status, and chemotherapy regimen) to receive six cycles of gemcitabine (1250 mg/m(2) on days 1 and 8, intravenously) plus platinum (carboplatin 5 × area under the curve or cisplatin 75 mg/m(2) on day 1, intravenously) with intercalated erlotinib (150 mg/day on days 15-28, orally; chemotherapy plus erlotinib) or placebo orally (chemotherapy plus placebo) every 4 weeks. With the exception of an independent group responsible for monitoring data and safety monitoring board, everyone outside the interactive internet response system company was masked to treatment allocation. Patients continued to receive erlotinib or placebo until progression or unacceptable toxicity or death, and all patients in the placebo group were offered second-line erlotinib at the time of progression. The primary endpoint was PFS in the intention-to-treat population. This trial is registered with ClinicalTrials.gov, number NCT00883779.

FINDINGS: From April 29, 2009, to Sept 9, 2010, 451 patients were randomly assigned to chemotherapy plus erlotinib (n=226) or chemotherapy plus placebo (n=225). PFS was significantly prolonged with chemotherapy plus erlotinib versus chemotherapy plus placebo (median PFS 7·6 months [95% CI 7·2-8·3], vs 6·0 months [5·6-7·1], hazard ratio [HR] 0·57 [0·47-0·69]; p<0·0001). Median overall survival for patients in the chemotherapy plus erlotinib and chemotherapy plus placebo groups was 18·3 months (16·3-20·8) and 15·2 months (12·7-17·5), respectively (HR 0·79 [0·64-0·99]; p=0·0420). Treatment benefit was noted only in patients with an activating EGFR gene mutation (median PFS 16·8 months [12·9-20·4] vs 6·9 months [5·3-7·6], HR 0·25 [0·16-0·39]; p<0·0001; median overall survival 31·4 months [22·2-undefined], vs 20·6 months [14·2-26·9], HR 0·48 [0·27-0·84]; p=0·0092). Serious adverse events were reported by 76 (34%) of 222 patients in the chemotherapy plus placebo group and 69 (31%) of 226 in the chemotherapy plus erlotinib group. The most common grade 3 or greater adverse events were neutropenia (65 [29%] patients and 55 [25%], respectively), thrombocytopenia (32 [14%] and 31 [14%], respectively), and anaemia (26 [12%] and 21 [9%], respectively).

INTERPRETATION: Intercalated chemotherapy and erlotinib is a viable first-line option for patients with non-small-cell lung cancer with EGFR mutation-positive disease or selected patients with unknown EGFR mutation status.

FUNDING: F Hoffmann-La Roche.

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