A Multi-center, Open-Label, Adaptive, Randomized Study of Palifosfamide-tris, a Novel DNA Crosslinker, in Combination With Carboplatin and Etoposide (PaCE) Chemotherapy Versus Carboplatin and Etoposide (CE) Alone in Chemotherapy Naïve Patients With Extensive-Stage Small Cell Lung Cancer. The MATISSE Study

Cancer Type
Lung Cancer
Trial Phase
Phase III
18 and over, Male and Female
Study Type
Protocol IDs
IPM3002 (primary)
Study Sponsor
Ziopharm Oncology, Incorporated


This is a multinational, multicenter, randomized controlled, open-label, adaptive study to evaluate the efficacy of PaCE chemotherapy in chemotherapy naive subjects with extensive-stage SCLC. Eligible subjects will be stratified according to age, gender, and Eastern Cooperative Oncology Group (ECOG) performance status, and randomized in a 1:1 ratio to receive either PaCE or CE chemotherapy.

The study design uses an adaptive group sequential approach with sample size re-estimation at the interim analysis.

Secondary efficacy endpoints include ORR, PFS, duration of response and changes in QOL and disease-related symptoms. Tumor-related endpoints will be assessed according to the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 guidelines.

The safety of study treatments will be assessed by the frequency and severity of adverse events as determined by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v4.03. To provide an initial confirmation of safety, an early interim analysis of safety data only will be performed.

An independent Data Monitoring Committee (DMC) will be convened to assess the safety and efficacy of the study interventions and to monitor the overall conduct of the clinical trial.