Brightline 1: This phase II/III study is comparing the effectiveness of a new medicine (BI 907828) with chemotherapy (doxorubicin) in people with dedifferentiated liposarcomaA Phase II/III, Randomized, Open-label, Multi-center Study of BI 907828 Compared to Doxorubicin as First Line Treatment of Patients With Advanced Dedifferentiated Liposarcoma

Inclusion

• Provision of signed and dated, written informed consent form (ICF) in accordance with ICH-GCP and local legislation prior to any trial-specific procedures, sampling, or analyses.
• Male or female patients ≥18 years old at the time of signature of the informed consent form (ICF). Women of childbearing potential (WOCBP) and men able to father a child must be ready and able to use 2 medically acceptable methods of birth control per ICH M3 (R2) that result in a low failure rate of less than 1% per year when used consistently and correctly beginning at screening, during trial 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 proven locally advanced or metastatic, unresectable (surgery morbidity would outweigh potential benefits), progressive or recurrent dedifferentiated liposarcoma (DDLPS). Locally performed histopathological diagnosis will be accepted for entry into this trial but will be confirmed by independent pathological review while the patients receive treatment in this trial.
• Written pathology report indicating the diagnosis of DDLPS with positive mouse double minute 2 homolog (MDM2) immunohistochemistry or MDM2 amplification as demonstrated by fluorescence in situ hybridization or next generation sequencing (NGS) must be available.
• Formalin fixed paraffin embedded tumor blocks or slides must be available for retrospective histopathological central review.
• Presence of at least one measurable target lesion according to Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1. In patients who only have one 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 (PS) of 0 or 1.
• Patient must be willing to donate blood samples for the pharmacokinetics, pharmacodynamics, and tumor mutation analysis.
• Patient willing to undergo a mandatory tumor biopsy at the time point specified in the flowchart unless exempt.
• Adequate organ function