Evaluation of the ASPYRE-Lung targeted variant panel: a rapid, low-input solution for non-small cell lung cancer biomarker testing and experience from three independent sites.

Abstract

Background: Many patients with non-small cell lung cancer (NSCLC) lack access to highly effective approved targeted therapeutics due to multiple gaps in biomarker testing. Challenges in comprehensive molecular testing include complexities associated with the need to assess the presence of multiple variants, costs of running multiple sequential assays per sample, high assay quality control (QC) failure rates, clinical need for rapid turn-around time (TAT) to initiate therapy, and insufficient tissue samples. The ASPYRE-Lung NSCLC assay addresses gaps in multiplexed testing by simultaneously analyzing DNA and RNA, detecting 114 actionable genomic variants across 11 genes, consistent with current NSCLC treatment guidelines. This study was to assess the ease of adoption and performance of ASPYRE-Lung in third-party laboratories, comparing concordance across sites and with orthogonal methods.

Methods: ASPYRE-Lung was established at two academic centers with multiple operators per site. Assay concordance was evaluated across three sites using 77 patient samples [61 derived from formalin-fixed paraffin-embedded (FFPE) tissue and 16 from cytology specimens].

Results: Reproducibility for all 77 samples yielded a positive percent agreement (PPA) of 100% and negative percent agreement (NPA) of 99.99%. Concordance with next-generation sequencing (NGS)-based methods across all three sites was high with PPA of 97.2% and NPA of 99.96%.

Conclusions: ASPYRE-Lung assay is a cost-effective, easy to adopt testing method requiring no specialized expertise or complicated bioinformatics, with the potential to inform genomic data on small tissue samples, thus enabling all patients with NSCLC to undergo biomarker testing in a timely manner and benefit from appropriate targeted therapies.