First-in-Human Study of DS-3939a in Participants With Advanced Solid Tumors

Trial statusRecruiting
Trial phasePhase 1, Phase 2
Trial typeInterventional
Biological sexAll
Age18+
SponsorDaiichi Sankyo

About this trial

This study will evaluate the safety, tolerability, and efficacy of DS-3939a in participants with advanced solid tumors.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Sign and date the main Informed Consent Form (ICF).

Has a left ventricular ejection fraction ≥50% by either an echocardiogram or multigated acquisition within 28 days of enrollment.

Has adequate organ function.

Measurable disease based on RECIST V1.1.

Disqualifiers

Has had prior treatment targeting mucin 1 (MUC1) or TA-MUC1.

Has spinal cord compression or clinically active central nervous system metastases.

Has multiple primary malignancies, except adequately resected non-melanoma skin cancer, curatively treated in situ disease, or other solid tumors curatively treated, with no evidence of disease for ≥3 years.

Has any history of ILD/pneumonitis irrespective of steroid use, or current ILD, or suspected ILD, or ILD that cannot be ruled out by imaging at Screening. Participants may be eligible if they had history of radiation pneumonitis that did not require steroids.

Trial design

Design model

Sequential

Treatments tested in this trial

  • DS-3939a

    Drug

    One IV infusion Q3W on Day 1 of each 21-day cycle

Treatment groups

590 Participants
are divided into 2 treatment groups
Group A: Dose Escalation (Part 1)Experimental treatment 1 intervention
Group B: Dose Expansion (Part 2)Experimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Number of Participants with Dose-limiting Toxicities Following Treatment With DS-3939a

Time frame
Approximately 3 months after first dosing
2

Overall Number of Participants with Treatment-emergent Adverse Events and Serious Adverse Events Following Treatment With DS-3939a

Time frame
Up to approximately 31 months
3

Number of Participants with Objective Response Rate Following Treatment With DS-3939a (Part 2)

Time frame
Up to approximately 31 months
4

PSA50 Response Rate Following Treatment with DS-3939a (Part 2; CRPC only)

Time frame
Up to approximately 31 months

Secondary outcomes

1

Number of Participants with Objective Response Rate Following Treatment With DS-3939a (Part 1)

Time frame
Up to approximately 31 months
2

Disease Control Rate Following Treatment With DS-3939a

Time frame
Up to approximately 31 months
3

Duration of Response Following Treatment With DS-3939a

Time frame
Up to approximately 31 months
4

Time to Response Following Treatment With DS-3939a

Time frame
Up to approximately 31 months

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.