Stopped: Study was terminated for lack of efficacy.
The primary purpose of this study is to evaluate the tolerability and safety profile of ASP1951 when administered as a single agent and in combination with pembrolizumab in participants with locally advanced (unresectable) or metastatic solid tumors; characterize the pharmacokinetic profile of ASP1951 when administered as a single agent and in combination with pembrolizumab; and determine the recommended phase 2 dose (RP2D) of ASP1951 and/or maximum tolerated dose (MTD) when administered as a single agent and in combination with pembrolizumab. This study will also evaluate the anti-tumor effect of ASP1951 when administered as a single agent and in combination with pembrolizumab.
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Safety and tolerability assessed by Dose Limiting Toxicity (DLT)
Timeframe: Up to 5 years
Safety and tolerability assessed by adverse events (AEs)
Timeframe: Up to 5 years
Safety and tolerability assessed by immune-related AEs (irAEs)
Timeframe: Up to 5 years
Safety and tolerability assessed by infusion-related reactions (IRRs)
Timeframe: Up to 5 years
Safety and tolerability assessed by serious adverse events (SAEs)
Timeframe: Up to 5 years
Number of participants with laboratory value abnormalities and/or adverse events related to treatment
Timeframe: Up to 5 years
Safety and tolerability assessed by 12- lead electrocardiogram (ECG)
Timeframe: Up to 5 years
Number of participants with vital signs abnormalities and/or adverse events related to treatment
Timeframe: Up to 5 years
Number of participants with Physical Exam abnormalities and/or adverse events related to treatment
Timeframe: Up to 5 years
Safety and tolerability assessed by ECOG performance status
Timeframe: Up to 5 years
Pharmacokinetics (PK) of ASP1951 in serum: AUClast
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: AUCinf
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: AUCinf%extrap
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: AUCtau
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: Cmax
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: Ctrough
Timeframe: Up to 48 weeks
Pharmacokinetics (PK) of ASP1951 in serum: tmax
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: t 1/2
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: tlast
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: CL
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: Vz
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in serum: Vss
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: AUClast
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: AUCinf
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: AUCinf%extrap
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: AUCtau
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: Cmax
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: Ctrough
Timeframe: Up to 48 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: tmax
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: t 1/2
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: tlast
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: CL
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: Vz
Timeframe: Up to 10 weeks
Pharmacokinetics (PK) of ASP1951 in combination with pembrolizumab in serum: Vss
Timeframe: Up to 10 weeks
Recommended Phase 2 Dose (RP2D) of ASP1951
Timeframe: Up to 5 years
RP2D of ASP1951 in combination with pembrolizumab
Timeframe: Up to 5 years
Maximum Tolerated Dose (MTD) of ASP1951
Timeframe: Up to 5 years
MTD of ASP1951 in combination with pembrolizumab
Timeframe: Up to 5 years