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A Study of DS-1471a In Subjects With Advanced Solid Tumors

A Phase 1, Multicenter, First-in-human Study of DS-1471a In Subjects With Advanced Solid Tumors

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06074705
Enrollment
17
Registered
2023-10-10
Start date
2023-08-04
Completion date
2025-07-29
Last updated
2025-08-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Solid Tumor

Keywords

Advanced Solid Tumor, DS-1471a

Brief summary

This first-in-human (FIH) study will assess the safety, preliminary efficacy, pharmacokinetics (PK), and immunogenicity of DS-1471a in participants with advanced or metastatic solid tumors.

Detailed description

The objectives of this multinational, multicenter, open-label, 2-part, dose-escalation and dose-expansion, FIH study of participants with locally advanced or metastatic solid tumors are to evaluate the safety, maximum tolerated dose (MTD), recommended dose for expansion phase, preliminary efficacy, PK, and immunogenicity of DS-1471a.

Interventions

DRUGDS-1471a

Intravenous administration on Day 1 of each 28-day cycle

Sponsors

Daiichi Sankyo Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: The clinical site will screen for the full inclusion criteria per protocol. * Sign and date the informed consent form (ICF) * Adults ≥18 years at the time the ICF is signed * Has a histologically or cytologically documented, locally advanced, metastatic, or unresectable solid tumor that is refractory to or intolerable with standard treatment, or for which no standard treatment is available * Has at least 1 measurable lesion according to RECIST v1.1 1 on computed tomography (CT) or magnetic resonance imaging (MRI) * Is willing and able to provide tumor tissue (newly obtained or archived) * Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 or 1 * Life expectancy ≥3 months * Has a left ventricular ejection fraction (LVEF) ≥50% within 28 days prior to Cycle 1 Day 1 * Required baseline local laboratory data (within 7 days prior to Cycle 1 Day 1) as prespecified in the protocol * A female participant of childbearing potential is eligible to participate if the following conditions are met: * Not pregnant as confirmed by highly sensitive pregnancy test within 7 days prior to study drug administration (Cycle 1 Day 1) * Agrees to adhere to a highly effective contraceptive method and agrees not to donate eggs or freeze/store eggs, during the intervention period, and for 7 months following the last dose of study drug * A male participant is eligible to participate if he agrees to the following during the intervention period and for 4 months following the last dose of study drug: * Avoid donating sperm * Adhere to either abstinence or use of a condom during intercourse with a nonparticipant of childbearing potential PLUS partner use of an additional contraceptive method * Is willing and able to comply with scheduled visits, study drug administration plan, laboratory tests, other study procedures, and study restrictions * Patients with liver cirrhosis and liver cancer may be eligible to participate if they meet additional protocol specified criteria Key

Exclusion criteria

The clinical site will screen for the full

Design outcomes

Primary

MeasureTime frame
Number of Participants With Dose-limiting Toxicities Following Treatment With DS-1471a (Dose Escalation)Cycle 1: Baseline up to Day 28 (each cycle is 28 days)
Number of Participants With Treatment-emergent Adverse Events Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 months

Secondary

MeasureTime frameDescription
Duration of Response (DoR) As Assessed by the Investigator in Participants Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 monthsDuration of response (DoR) is defined as the time from first documentation of CR or PR to the date of the first documentation of PD as assessed by the investigator or to the date of death due to any cause, whichever occurs first. As per RECIST v1.1, CR is defined as a disappearance of all target lesions and PR is defined as at least a 30% decrease in the sum of diameters of target lesions.
Progression-free Survival (PFS) of Participants With Advanced Solid Tumors Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 monthsProgression-free survival (PFS) is defined as the time from the start date of study drug to the date of the first documentation of objective PD as assessed by the investigator or to the date of death due to any cause, whichever occurs first. As per RECIST v1.1, PD is defined as at least a 20% increase in the sum of diameters of target lesions.
Overall Survival (OS) of Participants With Advanced Solid Tumors Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 monthsOverall survival (OS) is defined as the time from the date of the start of study drug to the date of death due to any cause.
Objective Response Rate (ORR) of Participants With Advanced Solid Tumors Following Treatment With DS-1471a (Dose Expansion)Baseline up to 60 monthsConfirmed objective response rate (ORR) is defined as the proportion of participants who have a confirmed BOR of CR or PR as assessed by the investigator. As per RECIST v1.1, CR is defined as a disappearance of all target lesions and PR is defined as at least a 30% decrease in the sum of diameters of target lesions.
Disease Control Rate (DCR) of Participants With Advanced Solid Tumors Following Treatment With DS-1471a (Dose Expansion)Baseline up to 60 monthsDisease control rate (DCR) is defined as the proportion of participants who have a BOR of CR, PR, or SD as assessed by the investigator. As per RECIST v1.1, CR is defined as a disappearance of all target lesions, PR is defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) is defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (at least a 20% increase in the sum of diameters of target lesions).
Best Overall Response (BOR) As Assessed by the Investigator in Participants Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 monthsBest overall response (BOR) is recorded from the start of study drug until documented progressive disease (PD) or start of any anticancer treatment, whichever occurs first. Confirmation of complete response (CR) or partial response (PR) is required. As per Response Evaluation Criteria In Solid Tumors (RECIST) v1.1, CR is defined as a disappearance of all target lesions, PR is defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) is defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (at least a 20% increase in the sum of diameters of target lesions).
Pharmacokinetic Analysis Time to Reach Maximum Plasma Concentration (Tmax) of DS-1471aCycle 1 (Days 1, 2, 4, 8, 15, and 22), Cycle 2 (Day 1), Cycle 3 (Days 1, 2, 4, 8, 15, and 22), Cycles 4, 6, and 8 (Day 1), each cycle is 28 days
Pharmacokinetic Analysis Area Under the Plasma Concentration-Time Curve of DS-1471aCycle 1 (Days 1, 2, 4, 8, 15, and 22), Cycle 2 (Day 1), Cycle 3 (Days 1, 2, 4, 8, 15, and 22), Cycles 4, 6, and 8 (Day 1), each cycle is 28 daysArea under the plasma concentration-time curve up to the last quantifiable time (AUClast), area under the plasma concentration-time curve from the time of dosing to 28 day (AUC28d), and area under the plasma concentration-time curve during dosing interval (AUCtau) will be assessed.
Pharmacokinetic Analysis Trough Plasma Concentration (Ctrough) of DS-1471aCycle 1 (Days 1, 2, 4, 8, 15, and 22), Cycle 2 (Day 1), Cycle 3 (Days 1, 2, 4, 8, 15, and 22), Cycles 4, 6, and 8 (Day 1), each cycle is 28 days
Percentage of Participants With Anti-Drug Antibodies Against DS-1471aCycle 1 (Days 1 and 8), Cycle 2 and 3 (Day 1), and Cycle 4 and every 2 cycles thereafter (Day 1), each cycle is 28 daysAnti-drug antibodies (ADA) incidence is defined as the proportion of participants having treatment-emergent ADAs.
Pharmacokinetic Analysis Maximum Plasma Concentration (Cmax) of DS-1471aCycle 1 (Days 1, 2, 4, 8, 15, and 22), Cycle 2 (Day 1), Cycle 3 (Days 1, 2, 4, 8, 15, and 22), Cycles 4, 6, and 8 (Day 1), each cycle is 28 days
Time to Response (TTR) As Assessed by the Investigator in Participants Following Treatment With DS-1471a (Dose Escalation and Expansion)Baseline up to 60 monthsTime to response (TTR) is defined as the time from the start of study drug to the date of the first documentation of response (CR or PR) as assessed by the investigator. As per RECIST v1.1, CR is defined as a disappearance of all target lesions and PR is defined as at least a 30% decrease in the sum of diameters of target lesions.

Countries

Japan, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026