Randomized phase III study of docetaxel versus docetaxel plus intercalated erlotinib in patients with relapsed non-squamous non-small cell lung carcinoma

NVALT Study Group, Christi M J Steendam, Robert Peric, Nico C van Walree, Magdolen Youssef, Franz M N H Schramel, Pepijn Brocken, John W G van Putten, Vincent van der Noort, G D Marijn Veerman, Stijn L W Koolen, Harry J M Groen, Anne-Marie C Dingemans, Ron H J Mathijssen, Egbert F Smit, Joachim G J V Aerts*

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

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    Abstract

    Background: Earlier preclinical and phase II research showed enhanced effect of docetaxel plus intercalated erlotinib. The NVALT-18 phase III study was designed to compare docetaxel with docetaxel plus intercalated erlotinib in relapsed metastasized non-squamous (NSQ) non-small cell lung cancer (NSCLC).

    Methods: Patients with relapsed Epidermal Growth Factor Receptor (EGFR) wild type (WT) NSQ-NSCLC were randomized 1:1 to docetaxel 75 mg/m(2) intravenously on day 1 every 21 days (control), or docetaxel 75 mg/m(2) intravenously on day 1 plus erlotinib 150 mg/day orally on day 2-16 every 21 days (experimental arm). Progression free survival (PFS) was the primary endpoint, secondary objectives were duration of response, overall survival (OS) and toxicity.

    Results: Between October 2016 and April 2018 a total of 45 patients were randomized and received treatment in the control (N = 23) or experimental arm (N = 22), the study was stopped due to slow accrual. Median PFS was 4.0 months (95% CI: 1.5-7.1) versus 1.9 months (95% CI 1.4-3.5), p = 0.01 respectively; adjusted hazard ratio (HR) 2.51 (95% CI: 1.16-5.43). Corresponding median OS was 10.6 months (95% CI: 7.0-8.6) versus 4.7 months (95% CI: 3.2-8.6), p = 0.004, with an adjusted HR of 3.67 (95% CI: 1.46-9.27). Toxicity was higher with combination therapy, with toxicity >= CTCAE grade 3 in N = 6 (26%) in the control arm and N = 17 (77%) in the experimental arm (p < 0.001), mainly consisting of gastrointestinal symptoms and leukopenia.

    Conclusions: Our study shows detrimental effects of docetaxel plus intercalated erlotinib, and strongly discourages further exploration of this combination in clinical practice.

    Original languageEnglish
    Pages (from-to)44-49
    Number of pages6
    JournalLung Cancer
    Volume160
    DOIs
    Publication statusPublished - Oct-2021

    Keywords

    • Antineoplastic Combined Chemotherapy Protocols/adverse effects
    • Carcinoma, Non-Small-Cell Lung/drug therapy
    • Disease-Free Survival
    • Docetaxel/therapeutic use
    • Erlotinib Hydrochloride/therapeutic use
    • Humans
    • Lung Neoplasms/drug therapy
    • Quinazolines/therapeutic use
    • Taxoids/therapeutic use

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