A study of rovalpituzumab tesirine in frontline treatment of patients with DLL3 expressing extensive small cell lung cancer.
2017
TPS2598Background: Treatment and survival of SCLC patients (pts) has remained mostly unchanged over past decades with high response rates to initial therapy (cisplatin/carboplatin + etoposide), but relapse is near universal with median survival < 1 year in extensive disease. Delta-like protein 3 (DLL3) is an inhibitory ligand of the Notch receptor family identified as a novel target in high-grade neuroendocrine tumors, and is highly expressed in SCLC but not in normal tissue. Rovalpituzumab tesirine (Rova-T™) is an antibody-drug conjugate targeting DLL3. A Phase I study of Rova-T monotherapy in 2nd and 3rd line SCLC pts demonstrated encouraging antitumor activity with an ORR of 18% in all pts, and an ORR of 38% in DLL3-high pts (Rudin et al., Lancet Oncol, 2016.). Methods: This is a Phase I, open-label, multicenter study (NCT02819999; no pts enrolled as of 7 February 2017).In Phase Ia (escalation), 15-34 previously untreated DLL3-high pts will be enrolled and randomized to 1 of 4 cohorts. The primary obje...
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