This is a multicenter, open label, Phase 1 dose-escalation study of DSP-7888 Dosing Emulsion administered to adult patients with advanced malignancies. Patients will be administered escalating doses of DSP-7888 Dosing Emulsion intradermally or subcutaneously in accordance with the following regimen: once weekly for four weeks during the Induction Phase, once every 7 to 14 days for 6 weeks during the Consolidation Phase, and once every 14 to 28 days until a discontinuation criterion is met during the Maintenance Phase. Once RP2D is determined from either the intradermal or subcutaneous group, an additional 40 patients evaluable for response may be enrolled as an expansion cohort at this dose and route of administration to confirm safety and tolerability. Separate from the dose-ascending cohort and RP2D expansion cohort described previously, and once the intradermal dose-ascending cohort is completed, up to 20 MDS patients who are refractory to treatment with hypomethylating agents (HMAs) will be enrolled into an MDS expansion cohort. Of these 20 MDS patients, one-half will receive DSP-7888 at 10.5 mg according to the modified schedule employed in Phase 1 (every week for 4 weeks, every 2 weeks until Week 24, and then every 4 weeks; \[MDS Cohort 1\]). The other half of the MDS patients will receive DSP-7888 at 10.5 mg in an alternative dosing schedule where DSP-7888 is administered every 2 weeks until Week 24, after which it will be administered every 4 weeks (MDS Cohort 2).
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
24
Dose escalation cohort: Patients will be administered escalating doses of DSP-7888 Dosing Emulsion intradermally or subcutaneously in accordance with the following regimen: once weekly for four weeks during the Induction Phase, once every 7 to 14 days for 6 weeks during the Consolidation Phase, and once every 14 to 28 days until a discontinuation criterion is met during the Maintenance Phase. MDS cohort 1: Patients will be intradermally administered of DSP-7888 at 10.5 mg every week for 4 weeks, every 2 weeks until Week 24, and then every 4 weeks. MDS cohort 2: Patients will be intradermally administered of DSP-7888 at 10.5 mg every 2 weeks until Week 24, and then every 4 weeks.
USOR - Rocky Mountain Cancer Center
Denver, Colorado, United States
Emory University Winship Cancer Institute
Atlanta, Georgia, United States
Horizon Oncology Research
Lafayette, Indiana, United States
USOR - TX Oncology Austin
Austin, Texas, United States
USOR -TX Oncology Dallas
Dallas, Texas, United States
USOR - TX Oncology Tyler
Tyler, Texas, United States
USOR - VA Cancer Specialists
Fairfax, Virginia, United States
USOR - VA Oncology Associates
Norfolk, Virginia, United States
Determination of the safety and tolerability of DSP-7888 Dosing Emulsion by assessing dose-limiting toxicities (DLTs)
Time frame: 4 weeks
Determination of the safety and tolerability of DSP-7888 Dosing Emulsion by assessing duration of study treatment
Time frame: 12 months
Determination of the Recommended Phase 2 Dose (RP2D) by assessing dose-limiting toxicities (DLTs)
Time frame: 4 weeks
Assessment of the preliminary anti-tumor activity by assessing Progression-Free Survival (solid tumors and acute myeloid leukemia (AML))
Evaluation of anti-tumor activity will be performed according to Immune Related Response Criteria (irRC) for solid tumors. For patients with ovarian cancer who have disease at baseline that is evaluable by CA-125 criteria only, the Gynecologic Cancer Intergroup (GCIG) criteria will be used for response assessment. For patients with AML, response assessment will be performed according to the AML International Working Group (IWG) criteria.
Time frame: 12 months
Overall Survival
Time frame: 12 months
Pharmacodynamic activity of DSP-7888 Dosing Emulsion as assessed by biomarker analysis
Cytotoxic T lymphocyte induction, histopathology and Reverse transcription polymerase chain reaction (RT-PCR) assays will be performed to provide information of the biomarkers on biopsied patient tumor tissue, archival samples and peripheral blood samples.
Time frame: 12 months
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.