DT-9081 Study in Participants With Advanced, Recurrent or Metastatic Solid Tumours

NCT ID: NCT05582850

Last Updated: 2025-08-28

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 29 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-11-24
• Study Completion Date: 2025-07-28

Brief Summary

This is a Phase 1, multicentre, open-label, dose-escalation study to determine a recommended phase 2 dose (RP2D) of DT-9081, followed by an expansion study of DT-9081 in participants with advanced, recurrent or metastatic solid tumours

Detailed Description

This first-in-human Phase 1, multicentre, open label study is evaluating the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of DT-9081 in adult patients with advanced, recurrent or metastatic solid tumours who failed standard of care therapies.

This Phase 1 study consists of 2 parts. The first part is a dose-escalation using a modified 3+3 design with up to 8 dose escalation cohorts at increasing levels. The dose-escalation part aims at determining the recommended phase 2 dose. The second part is an expansion to validate the dose/schedule of administration as well as to assess preliminary efficacy of DT-9081.

Patients will be dosed orally once daily. The schedule might be adjusted in case of toxicities.

Conditions

Solid Tumor, Adult

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

DT-9081

Capsule, 25 mg, 50 mg and 100 mg

Group Type: EXPERIMENTAL

DT-9081 - dose escalation

Intervention Type: DRUG

Patients will be dosed orally once daily. The schedule might be adjusted in case of toxicities.

DT-9081 - expansion

Intervention Type: DRUG

A homogeneous patient population will receive DT-9081 at up to 3 dose levels.

Interventions

DT-9081 - dose escalation

Patients will be dosed orally once daily. The schedule might be adjusted in case of toxicities.

Intervention Type: DRUG

DT-9081 - expansion

A homogeneous patient population will receive DT-9081 at up to 3 dose levels.

Intervention Type: DRUG

Other Intervention Names

Phase 1 dose-escalation part; Phase 1 expansion part

Eligibility Criteria

Inclusion Criteria

• Participants must have a histologically or cytologically confirmed advanced solid tumour that is locally advanced (i.e., not eligible for curative surgery or radiotherapy), recurrent or metastatic, and who have failed or are ineligible for standard of care therapies.
• Participants must be ≥18 years of age.
• Participants must have measurable disease per RECIST v1.1. Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions.
• Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1.
• Participants must have adequate organ function.

Exclusion Criteria

• Participants using drugs interfering with the COX-2 pathways or prohibited drugs.
• Participants with unresolved AEs from previous anti-cancer therapies of Grade ≥ 2 with exception of alopecia. Participants with Grade ≤ 2 neuropathy may be eligible.
• Participants who underwent major surgery or significant traumatic injury within 4 weeks prior to Cycle 1 Day 1 who have not recovered adequately from any AEs and/or complications from the intervention prior to starting study drug.
• Participants who have received prior radiotherapy within the last 4 weeks before start of study drug treatment (limited field palliative radiotherapy within 2 weeks).
• Participants who have already received EP4R antagonist in an investigational trial.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Domain Therapeutics SA

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Institut Jules Bordet

Anderlecht, , Belgium

Université Catholique de Louvain

Leuven, , Belgium

Institut Curie

Paris, , France

Institut Claudius Regaud

Toulouse, , France

Countries

Belgium; France

Other Identifiers

DT-9081-CLI-001

Identifier Type: -

Identifier Source: org_study_id