Novocure (NVCR) Announces Clinical Collaboration with MSD on Registrational-Intent Study to Evaluate Tumor Treating Fields Together with KEYTRUDA in Newly Diagnosed Glioblastoma

Novocure (NASDAQ: NVCR) today announced it has entered into a clinical trial collaboration agreement with MSD, a tradename of Merck & Co., Inc., Rahway, NJ, USA, to study the use of Tumor Treating Fields (TTFields) concomitant with MSD’s anti-PD-1 therapy KEYTRUDA® (pembrolizumab) for the treatment of patients with newly diagnosed glioblastoma (GBM). This is the second clinical collaboration between Novocure and MSD.

“We are excited to collaborate again with global oncology leader, MSD, in the pursuit of extending survival in some of the most aggressive forms of cancer,” said William Doyle, Novocure’s Executive Chairman. “EF-41/Keynote D58 will build on encouraging preliminary data from the 2-THE-TOP phase 2 pilot study and will further explore recently published data suggesting the potential for a therapeutic benefit when TTFields are used together with immunotherapy due to TTFields’ downstream immune system activation and anti-tumor cell response. Through the EF-41/Keynote D58 trial, we hope to identify a potential new treatment option for solid tumor cancers and we are thrilled at the prospect of improving outcomes for patients in need.”

Novocure and MSD plan to conduct a double-blind, placebo-controlled study of TTFields concomitant with KEYTRUDA and maintenance temozolomide (TMZ) versus TTFields together with placebo and maintenance TMZ for the treatment of adult patients with newly diagnosed GBM. Novocure intends to engage FDA in the near term in a pre-submission discussion regarding the details of the agreed upon study.

ABOUT 2-THE-TOP

The EF-41/Keynote D58 trial will build on encouraging preliminary data from the 2-THE-TOP phase 2 pilot study. The 2-THE-TOP trial is an investigator-initiated, phase 2 pilot trial evaluating the use of TTFields therapy together with pembrolizumab and chemotherapy (temozolomide) for the treatment of 26 adult patients with newly diagnosed GBM. In March 2022, updated data from the ongoing 2-THE-TOP study was presented at the World Federation of Neuro-oncology Societies (WFNOS) 2022 Quadrennial Meeting, comparing outcomes for 26 patients in the 2-THE-TOP study versus a historical, matched-control group of 26 patients from the TTFields plus temozolomide arm of the phase 3 pivotal EF-14 clinical trial. Patients in the 2-THE-TOP trial displayed median progression-free survival (primary endpoint) of 12.1 months and median overall survival of 25.2 months, which are based on a median follow-up time of 16.8 months. Additionally, 193,760 peripheral blood mononuclear cells were sequenced in 12 patients before pembrolizumab was administered and detected robust post-TTFields T cell activation in 11 of 12 patients via the T1IFN trajectory with a strong correlation with the TCRαβ clonal expansion Simpson index (Spearman coefficient r=-0.8, P=0.014).

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