Transferrin receptor-based circulating tumor cell enrichment provides a snapshot of the molecular landscape of solid tumors and correlates with clinical outcomes

Author:

Galletti Giuseppe,Halima Ahmed,Gjyrezi Ada,Zhang Jiaren,Zimmerman Bob,Worroll Daniel,Kallergi Galatea,Barreja Rohan,Ocean Allyson,Saxena Ashish,McGraw Timothy E.,Nanus David M.,Elemento Olivier,Altorki Nasser K.,Tagawa Scott T.,Giannakakou ParaskeviORCID

Abstract

AbstractCirculating tumor cells (CTCs) captured from the bloodstream of patients with solid tumors have the potential to accelerate precision oncology by providing insight into tumor biology, disease progression and response to treatment. However, their potential is hampered by the lack of standardized CTC enrichment platforms across tumor types. EpCAM-based CTC enrichment, the most commonly used platform, is limited by EpCAM downregulation during metastasis and the low EpCAM expression in certain tumor types, including the highly prevalent and lethal NSCLC. In this study we demonstrate that Transferrin Receptor (TfR) is a selective, efficient biomarker for CTC identification and capture in patients with prostate, pancreatic and NSCLC. TfR identifies significantly higher CTC counts than EpCAM, and TfR+-CTC enumeration correlates with disease progression in metastatic prostate and pancreatic cancers, and overall survival and osimetrinib-resistance in non-small cell lung cancer (NSCLC). Profiling of TfR+-CTCs provides a snapshot of the molecular landscape of each respective tumor type and identifies potential mechanisms underlying treatment response to EGFR TKi and immune checkpoint inhibitors in NSCLC.One sentence summaryTransferrin Receptor identifies circulating tumor cells in solid tumors

Publisher

Cold Spring Harbor Laboratory

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