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Erlotinib intercalating pemetrexed/cisplatin versus erlotinib alone in Chinese patients with brain metastases from lung adenocarcinoma: a prospective, non-randomised, concurrent controlled trial (NCT01578668).
ESMO Open 2017
Objective: Erlotinib has a synergistic effect with pemetrexed for treating non-squamous non-small-cell lung cancer. We investigated the efficacy and safety of erlotinib (E) in combination with pemetrexed/cisplatin (E-P) in Chinese patients with lung adenocarcinoma with brain metastases.
Design: Patients who were erlotinib-naïve or pemetrexed-naïve were assigned in parallel to receive either E or E-P. The primary endpoint was the intracranial overall response rate (ORRi).
Results: Sixty-nine patients with lung adenocarcinoma with brain metastases received E (n=35) or E-P (n=34) from January 2012 to November 2014. Demographics and patient characteristics were well balanced between the two groups, including epidermal growth factor receptor ( EGFR ) status, sex, age, smoking status, Eastern Cooperative Oncology Group (ECOG) performance status, brain metastases and number of prior treatments. ORRi in the E-P arm was superior to that in the E arm (79% vs 48%, p=0.008). Compared with E as the first-line treatment, E-P was associated with better intracranial progression-free survival (PFSi, median: 9 vs 2 months, p=0.027) and systemic PFS (median: 8 vs 2 months, p=0.006). The most frequent E-related adverse events were higher in the combination arm. No new safety signals were detected. The side effects were tolerable, and there were no drug-related deaths.
Conclusion: Our study suggests that the E-P combination may be effective in Chinese patients with lung adenocarcinoma with brain metastases, with improved PFS in treatment-naïve patients. Toxicities are tolerable, and there are more E-related side effects.
Design: Patients who were erlotinib-naïve or pemetrexed-naïve were assigned in parallel to receive either E or E-P. The primary endpoint was the intracranial overall response rate (ORRi).
Results: Sixty-nine patients with lung adenocarcinoma with brain metastases received E (n=35) or E-P (n=34) from January 2012 to November 2014. Demographics and patient characteristics were well balanced between the two groups, including epidermal growth factor receptor ( EGFR ) status, sex, age, smoking status, Eastern Cooperative Oncology Group (ECOG) performance status, brain metastases and number of prior treatments. ORRi in the E-P arm was superior to that in the E arm (79% vs 48%, p=0.008). Compared with E as the first-line treatment, E-P was associated with better intracranial progression-free survival (PFSi, median: 9 vs 2 months, p=0.027) and systemic PFS (median: 8 vs 2 months, p=0.006). The most frequent E-related adverse events were higher in the combination arm. No new safety signals were detected. The side effects were tolerable, and there were no drug-related deaths.
Conclusion: Our study suggests that the E-P combination may be effective in Chinese patients with lung adenocarcinoma with brain metastases, with improved PFS in treatment-naïve patients. Toxicities are tolerable, and there are more E-related side effects.
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