Rationale and Design of the Phase II ANTELOPE Study of Atezolizumab, Carboplatin and nab-Paclitaxel vs. Pembrolizumab, Platinum and Pemetrexed in TTF-1 Negative, Metastatic Lung Adenocarcinoma (AIO-TRK-0122).

Pemetrexed-based immunochemotherapy represents an established standard of care as first line treatment for non-oncogenic driven metastatic non-small cell lung adenocarcinoma (NSCLC/ADC). However, retrospective analyses revealed better outcomes for pemetrexed-free regimens compared to pemetrexed-containing regimens in patients with thyroid transcription factor 1 (TTF-1) negative NSCLC/ADC. The multicenter, phase II, randomized, open-label ANTELOPE trial evaluates whether atezolizumab, carboplatin and nab-paclitaxel is superior to pembrolizumab, cis-/carboplatin and pemetrexed in TTF-1 negative NSCLC/ADC. Eligible participants are ≥18 years of age, with histologically or cytologically confirmed, treatment-naïve stage IV TTF-1 negative NSCLC/ADC without actionable genomic alterations or PD-L1-overexpression (TPS ≥50%) and will be randomized in a 1:1 fashion to pemetrexed-free (group A) vs. pemetrexed-based (group B) immunochemotherapy. The primary endpoint of this trial is overall survival (OS). Enrollment will start in Q2 2023 at 30 sites in Germany with a planned inclusion of 136 participants. ANTELOPE will provide efficacy outcomes of the current standard-of-care for the specific subset of TTF-1 negative NSCLC/ADC in a head-to-head comparison of approved immunochemotherapy regimens.

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