Brightline-2: A Study to Test Whether Brigimadlin (BI 907828) Helps People With Cancer in the Biliary Tract, Pancreas, Lung or Bladder

Inclusion Criteria:

   - Diagnosis of a solid tumour which meets the criteria for an open trial cohort:

      - Cohorts 1 and 1-CN (biliary tract adenocarcinoma): Locally advanced or metastatic
      biliary tract adenocarcinoma (intra- and extrahepatic cholangiocarcinoma,
      gallbladder cancer, and ampullary cancer).Patients must have unresectable disease
      and have received all available conventional therapies known to confer clinical
      benefit for their disease based on local approved standards; or (in the opinion
      of the investigator) patients are unlikely to tolerate or derive clinically
      meaningful benefit from appropriate standard of care therapy.

      - Cohort 2 (pancreatic ductal adenocarcinoma): Locally advanced or metastatic
      pancreatic ductal adenocarcinoma. Patients must have unresectable disease and
      have received all available conventional therapies known to confer clinical
      benefit for their disease based on local approved standards.

      - Cohort 3 (lung adenocarcinoma): Locally advanced or metastatic lung
      adenocarcinoma. Patients must have unresectable disease and have received all
      available conventional therapies known to confer clinical benefit for their
      disease based on local approved standards.

      - Cohort 4 (urothelial bladder cancer): Locally advanced or metastatic urothelial
      bladder cancer. Patients must have unresectable disease and have received all
      available conventional therapies known to confer clinical benefit for their
      disease based on local approved standards.

   - Written pathology report / molecular profiling report indicating Mouse double minute 2
   homolog (MDM2) amplification or a copy number ≥8 and tumor protein 53 (TP53) wild-type
   status. This must have been confirmed with a tissue-based test. A test with liquid
   biopsy is not accepted.

   - Archival tissue (formalin fixed paraffin embedded [FFPE] tumour blocks or slides) must
   be provided for retrospective confirmation of MDM2 amplification and TP53 status.

   - Presence of at least 1 measurable target lesion according to Response Evaluation
   Criteria in Solid Tumours (RECIST) version 1.1.

   - Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1.

   - Patient must be willing to donate mandatory blood samples for the pharmacokinetics,
   pharmacodynamics, and biomarker analyses

   - Adequate organ function

   - All toxicities related to previous anti-cancer therapies have resolved to ≤Common
   Terminology Criteria for Adverse Events (CTCAE) Grade 1 prior to trial treatment
   administration (except for alopecia and amenorrhea / menstrual disorders which can be
   of any grade and peripheral neuropathy which must be ≤CTCAE Grade 2).

   - Life expectancy ≥3 months at the start of treatment in the opinion of the
   investigator.

   - 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 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.

Exclusion Criteria:

   - Previous administration of brigimadlin (BI 907828) or any other MDM2-p53 or mouse
   double minute 4 (MDMX, MDM4)-p53 antagonist.

   - Active bleeding, significant risk of haemorrhage (e.g. previous severe
   gastrointestinal bleeding, previous haemorrhagic stroke at any time), or current
   bleeding disorder (e.g. haemophilia, von Willebrand disease).

   - Major surgery (major according to the investigator's assessment) performed within 4
   weeks prior to start of trial treatment or planned within 6 months after screening
   (e.g. hip replacement).

   - Clinically significant previous or concomitant malignancies in the opinion of the
   investigator affecting the efficacy and/or outcome of the trial.

   - Patients who must or intend to continue the intake of restricted medications or any
   drug considered likely to interfere with the safe conduct of the trial.

   - Currently enrolled in another investigational device or drug trial.

   - Any history of, or concomitant condition that, in the opinion of the investigator,
   would compromise the patient's ability to comply with the trial or interfere with the
   evaluation of the safety and efficacy of the trial drug.

   - Patients not expected to comply with the protocol requirements or not expected to
   complete the trial as scheduled (e.g. chronic alcohol or drug abuse or any other
   condition that, in the investigator's opinion, makes the patient an unreliable trial
   participant).

Further exclusion criteria apply.