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Novocure and Zai Lab Announce EF-31 Phase 2 Pilot Study Evaluating Tumor Treating Fields Together with Standard-of-Care Chemotherapy Meets Primary Endpoint for First-Line Treatment of Gastric Cancer

Confirmed objective response rate was 50% for patients treated with TTFields together with standard-of-care chemotherapy

Duration of response was 10.3 months

One-year survival was 72%

Excerpt from the Press Release:

Excerpt from the Press Release:

ST. HELIER, Jersey & SHANGHAI, China & SAN FRANCISCO & CAMBRIDGE, Mass.–(BUSINESS WIRE)–Novocure (NASDAQ: NVCR), a global oncology company working to extend survival in some of the most aggressive forms of cancer, and Zai Lab (NASDAQ: ZLAB; HKEX: 9688), an innovative commercial-stage biopharmaceutical company, today announced that the EF-31 phase 2 pilot study, testing the safety and efficacy of Tumor Treating Fields (TTFields) together with standard-of-care (chemotherapy alone or in combination with trastuzumab for HER2-positive patients) as a first-line treatment in patients with gastric adenocarcinoma, met its primary endpoint of objective response rate with supportive signals across secondary endpoints. TTFields therapy was well tolerated, with no increase in the systemic toxicity of the XELOX chemotherapy regimen or the combination regimen, and no high-grade skin toxicities were reported.

Initial analysis was conducted with a median follow-up period of 8.6 months. The primary endpoint, confirmed objective response rate, was 50%. Median progression-free survival was 7.8 months. Duration of response was 10.3 months. Median overall survival has not yet been reached with a one-year survival rate of 72%.

The EF-31 outcomes are encouraging in a historically difficult to treat cancer,” said Dr. Jin Li, Head of Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine. “The addition of Tumor Treating Fields to standard-of-care chemotherapy could lead to impactful changes in the treatment of gastric cancer patients and I look forward to confirming these data in additional clinical studies

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