Boston Biomedical has initiated dosing of the first patient in each of two clinical studies evaluating DSP-7888, an investigational cancer peptide vaccine. One study is in combination with checkpoint inhibitors for multiple tumor types, and the other is in combination with bevacizumab in glioblastoma. DSP-7888 is hypothesized to induce Wilms' tumor gene 1 (WT1)-specific cytotoxic T lymphocytes (CTL) and helper T cells to attack WT1-expressing cancerous cells found in various types of hematologic cancers and solid tumors. WT1 has been a focus of cancer vaccine researchers since the National Cancer Institute ranked it as the number one priority target for cancer immunotherapy.
"Despite significant advances in cancer treatment, there remains a need for new, effective treatment options for many patients," said Patricia S. Andrews, Chief Executive Officer, Boston Biomedical. "We are exploring the potential of DSP-7888 to elicit an anti-tumor response in a number of high unmet need tumor types."
The multicenter, open-label, phase 1b study of DSP-7888 in combination with checkpoint inhibitors, known as WIZARD101CI, is targeted to enroll approximately 84 patients who will receive either DSP-7888 in combination with nivolumab or in combination with atezolizumab. The primary endpoints of the study are determination of safety, tolerability, and recommended phase 2 dose. Secondary endpoints include duration of response, disease control rate, progression-free survival (PFS) at six months, median PFS, survival at 12 months and overall survival (OS). This study will be conducted in patients with advanced solid tumors including melanoma, non-small cell lung cancer, head and neck squamous cell carcinoma, renal cell carcinoma, and urothelial cancer. Further information about this study is available at www.ClinicalTrials.gov.
The multicenter, global phase 2 study of DSP-7888 in combination with bevacizumab in glioblastoma, known as WIZARD201G, is targeted to enroll approximately 200 patients with recurrent or progressive glioblastoma following treatment with first-line therapy consisting of surgery and radiation with or without chemotherapy. Patients will receive either DSP-7888 in combination with bevacizumab or bevacizumab alone. The primary endpoint of the study is OS, with secondary endpoints including survival at 12 months, PFS at six months, median PFS, response rate (complete response + partial response), duration of response, and adverse event profile. Further information about this study is available at www.ClinicalTrials.gov.