A Study to Evaluate Safety and Preliminary Anti-tumor Activity of Debio 0123 as Monotherapy in Adult Participants With Advanced Solid Tumors

NCT ID: NCT05109975

Last Updated: 2025-12-31

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE1
• Total Enrollment: 155 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-11-05
• Study Completion Date: 2027-06-30

Brief Summary

This study has two parts: Part 1 and Part 2. The purpose of this study in Part 1, Dose Escalation Part is to determine the maximum tolerated dose (MTD) and/or the recommended Phase 2 dose (RP2D) of Debio 0123 as monotherapy with repeated dosing in adults with advanced solid tumors that recurred or progressed after prior therapy and/or for whom no standard therapy of proven benefit is available.

The purpose in Part 2, Expansion Part of this study, is to characterize the safety and tolerability of Debio 0123 in each study arm and overall when administered as monotherapy at the MTD/RP2D determined during the Dose Escalation Part 1 and to evaluate the preliminary anti-tumor activity of Debio 0123 when administered as monotherapy to participants in each study arm.

Conditions

Advanced Solid Tumors

Keywords

Advanced Solid Tumors; WEE1-inhibitor

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Part 1: Dose Escalation

Participants will receive Debio 0123 orally in escalating dose cohorts during each 21-day treatment cycle until progression of disease, unacceptable toxicity, participant's withdrawal, or Investigator's decision, whichever occurs first.

Group Type: EXPERIMENTAL

Debio 0123

Intervention Type: DRUG

Debio 0123 orally during 21-day treatment cycles.

Part 2: Expansion

Debio 0123 at the RP2D established in Part 1 participants with uterine serous carcinoma (USC) (arm A), recurrent or progressive, high-grade epithelial ovarian cancer (EOC) with cyclin E1 (arm B), and solid tumor with biomarker-driven selection (arm C).

Group Type: EXPERIMENTAL

Debio 0123

Intervention Type: DRUG

Debio 0123 orally during 21-day treatment cycles.

Interventions

Debio 0123

Debio 0123 orally during 21-day treatment cycles.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Part 1 dose escalation only:

• Histologically or cytologically confirmed locally advanced or metastatic solid tumors.
• Measurable or non-measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 criteria.
• Disease progression under or following standard therapy and/or disease for which no available standard therapy of proven benefit.
• Part 2 expansion only:

• Measurable disease per RECIST version 1.1 criteria for each arm.
• Participants (≥18 years old) who progressed or have recurrence of one of the tumor types specified in the study arms following standard therapy according to RECIST version 1.1, or for whom, in the opinion of the Investigator, no effective standard therapy exists.
• Arm A: Histologically or cytologically confirmed USC that recurred or progressed following at least 1 prior platinum-based line of therapy for management of advanced or metastatic disease.
• Arm B: Histologically or cytologically confirmed, recurrent, high-grade EOC, primary peritoneal cancer, or fallopian tube cancer with cyclin E1 driven selection. Participants must have progressed after at least 1 prior platinum-based therapy for advanced/metastatic disease.
• Arm C: Histologically or cytologically confirmed, locally advanced or metastatic solid tumor with biomarker-driven selection.
• Part 1 dose escalation and Part 2 expansion:

• Accessible tumor for biopsy, and participant willing to undergo tumor biopsy unless archived tumor sample is available.
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-1.
• Life expectancy of at least 3 months, in the best judgment of the Investigator.
• Adequate bone marrow, liver biochemistry, renal function, and coagulation status.
• Willing to practice highly effective methods of contraception.
• Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures.

Exclusion Criteria

• Participants with active second malignancies requiring therapy in the last 6 months, with the exception of superficial bladder cancers, ductal carcinoma in situ or other carcinomas in situ, and non-melanoma non-melanoma skin cancers (basal cell/squamous cell skin cancer) that have been treated surgically.
• Current use of an investigational agent or a medical device.
• Major surgery ≤4 weeks prior to the first dose of study treatment or who have not recovered from the surgical procedure.
• Brain tumors and/or brain metastases unless they are asymptomatic, stable on recent imaging (not dated more than 28 days from the inclusion date), and have not required active treatment in the last month before study entry.
• History of myocardial infarction or stroke within 6 months, congestive heart failure greater than New York Heart Association (NYHA) class II, unstable angina pectoris, unexplained recurrent syncope, cardiac arrhythmia requiring treatment, family history of sudden death from cardiac-related causes before the age of 50, or any cardiotoxicity experienced after previous chemotherapy.
• Known infection requiring systemic use of an antibiotic or antiviral agent.
• Immunization with live or live-attenuated vaccine within 28 days prior to study inclusion or planned injection of live or live-attenuated vaccines.
• Pregnancy or breast-feeding.
• Inability or unwillingness to swallow oral medication.
• Clinically significant gastrointestinal abnormality that would affect the absorption of the drug.
• Any anti-cancer treatment, monoclonal antibodies/biologics, investigational treatment, or radiotherapy with curative intent within 28 days prior to starting study treatment. Palliative radiation for pain relief is allowed up to 1 week prior to starting study treatment.
• Unresolved AEs or toxicities due to previous treatments, i.e., >Grade 1. Exceptions will be made for Grade 2 anemia (if hemoglobin is not less than 9 g/dL or 5.6 mmol/L) and >Grade 2 alopecia and endocrinopathies controlled by replacement therapy (example, hypothyroidism due to immune checkpoint inhibitors).

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

Sponsors

Debiopharm International SA

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

South Texas Accelerated Research Therapeutics (START) Midwest

Grand Rapids, Michigan, United States

David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center

New York, New York, United States

South Texas Accelerated Research Therapeutics (START)

San Antonio, Texas, United States

Froedtert Hospital and the Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Hospital Universitario de A Coruna

A Coruña, , Spain

Hospital Universitari Vall d'Hebron

Barcelona, , Spain

Institut Catala de Oncologia

Girona, , Spain

Clinica Universidad de Navarra

Madrid, , Spain

START Madrid. Hospital Fundación Jimenez Diaz

Madrid, , Spain

Hospital Universitario 12 de Octubre

Madrid, , Spain

Hospital Universitario La Paz

Madrid, , Spain

Clinica Universidad de Navarra

Pamplona, , Spain

Hospital Clinico Universitario de Valencia

Valencia, , Spain

Istituto Oncologico della Svizzera italiana - Ente Ospedaliero Cantonale

Bellinzona, , Switzerland

Inselspital, Universitaetsspital Bern, Freiburgstrasse 4

Bern, , Switzerland

Kantonsspital St. Gallen, Rorschacher Strasse 95

Sankt Gallen, , Switzerland

Universitätsspital Zürich, Dermatologische Klinik

Zurich, , Switzerland

Countries

United States; Spain; Switzerland

Other Identifiers

2023-504824-24

Identifier Type: OTHER

Identifier Source: secondary_id

Debio 0123-102

Identifier Type: -

Identifier Source: org_study_id