Brightline-4: A Study to Test How Well Brigimadlin is Tolerated by People With a Type of Cancer Called Dedifferentiated Liposarcoma

Completed · Phase 3

Conditions studied: Liposarcoma, Dedifferentiated

In brief

This study is open to adults with a type of cancer called dedifferentiated liposarcoma (DDLPS). They can join the study if their tumours are positive for MDM2. The purpose of this study is to find out whether a medicine called brigimadlin (BI 907828) is tolerated by and helps people with DDLPS. Brigimadlin is a so-called MDM2 inhibitor that is being developed to treat cancer. Participants take brigimadlin as a tablet once every 3 weeks. Participants may continue to take brigimadlin as long as they benefit from treatment and can tolerate it. They visit the study site regularly. At the study site, doctors regularly check participants' health and take note of any unwanted effects. The doctors also regularly check tumour size.

Key facts

Study ID

NCT06058793

Run by

Boehringer Ingelheim

People needed

138

Starts

2023-12-13

Expected to finish

2025-12-12

Last updated by the study team

2026-01-09

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Provision of signed and dated, written informed consent form (ICF) in accordance with International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) - Good Clinical Practice (GCP) and local legislation prior to any study-specific procedures, sampling, or analyses
• Male or female patients ≥18 years old at the time of signature of the ICF
• Women of childbearing potential (WOCBP) and men able to father a child must be ready and able to use two medically acceptable methods of birth control per ICH M3 (R2) that result in a low failure rate of <1% per year when used consistently and correctly beginning at screening, during study participation, and until 6 months and 12 days after last dose for women and 102 days after last dose for men. A list of contraception methods meeting these criteria is provided in the patient information
• Histologically documented locally advanced or metastatic, unresectable (i.e. surgery morbidity would outweigh potential benefits), progressive or recurrent Dedifferentiated liposarcoma (DDLPS), meeting the criteria for an open study cohort:
• Cohort A: patient has not received prior systemic therapy for DDLPS in any setting (including adjuvant, neoadjuvant, maintenance, palliative)
• Cohort B: patient has received any prior systemic therapy for DDLPS in any setting (including adjuvant, neoadjuvant, maintenance, palliative)
• Written pathology report indicating the diagnosis of DDLPS with positive MDM2 immunohistochemistry or MDM2 amplification as demonstrated by fluorescence in situ hybridisation (FISH) or next-generation sequencing (NGS)
• Presence of at least 1 measurable target lesion according to RECIST version 1.1. In patients who only have 1 target lesion, the baseline imaging must be performed at least 2 weeks after any biopsy of the target lesion
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
• Life expectancy ≥3 months at the start of treatment in the opinion of the investigator Further inclusion criteria apply.

You may not qualify if…

• Known mutation in the TP53 gene (screening for TP53 status is not required)
• Major surgery (major according to the investigator's assessment) performed within 4 weeks prior to start of study treatment or planned within 6 months after screening
• Previous administration of brigimadlin or any other MDM2-p53 or MDM4 regulator of p53 (MDM4/MDMX)-p53 antagonist
• Previous treatment in study 1403-0008 (Brightline-1)
• Having to receive, or intending to receive, restricted medications or any drug considered likely to interfere with the safe conduct of the study
• Receiving treatment for brain metastases or leptomeningeal disease (LMD) which may interfere with safety and/or endpoint assessment
• Unable to swallow the study treatment
• Previous or concomitant malignancies other than the one treated in this study within the previous 2 years, except effectively treated non-melanoma skin cancers, carcinoma in situ of the cervix, ductal carcinoma in situ, or other malignancy that is considered cured by local treatment Further exclusion criteria apply.

Where it is running

• Mayo Clinic-Arizona — Phoenix, Arizona, United States
• Precision NextGen Oncology — Beverly Hills, California, United States
• Sarcoma Oncology Center — Santa Monica, California, United States
• University of California Los Angeles — Santa Monica, California, United States
• Yale Cancer Center — New Haven, Connecticut, United States
• Mayo Clinic - Florida — Jacksonville, Florida, United States
• University Cancer and Blood Center — Athens, Georgia, United States
• Northwestern University — Chicago, Illinois, United States
• University of Kansas Cancer Center — Overland Park, Kansas, United States
• Mayo Clinic, Rochester — Rochester, Minnesota, United States
• Washington University School of Medicine — St Louis, Missouri, United States
• Nebraska Methodist Hospital — Omaha, Nebraska, United States
• John Theurer Cancer Center — Hackensack, New Jersey, United States
• Northwell Health — Lake Success, New York, United States
• Memorial Sloan-Kettering Cancer Center — New York, New York, United States
• Duke University Medical Center — Durham, North Carolina, United States
• Abramson Cancer Center at Pennsylvania Hospital — Philadelphia, Pennsylvania, United States
• West Cancer Center & Research Institute — Germantown, Tennessee, United States
• The University of Texas MD Anderson Cancer Center — Houston, Texas, United States
• Utah Cancer Specialists Cancer Center — Salt Lake City, Utah, United States
• Huntsman Cancer Institute — Salt Lake City, Utah, United States
• Virginia Cancer Specialists, PC — Fairfax, Virginia, United States
• Fred Hutchinson Cancer Research Center — Seattle, Washington, United States
• Medical Oncology Associates, P.S. — Spokane, Washington, United States
• University of Alabama at Birmingham — Birmingham, Alabama, United States

Full record on ClinicalTrials.gov

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