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RecruitingSmall Cell Lung CarcinomaNeuroendocrine NeoplasmsExtra-pulmonary Neuroendocrine Carcinoma

DAREON™-5: A Study to Test Whether Different Doses of BI 764532 Help People With Small Cell Lung Cancer or Other Neuroendocrine Cancers

Eligible age

18+ yrs

Accepts

All genders

Locations

12 states

Healthy volunteers

No

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About this study

This study is open to adults with small cell lung cancer and other neuroendocrine tumours. The study is in people with advanced cancer for whom previous treatment was not successful or no standard treatment exists. The purpose of this study is to find a suitable dose of BI 764532 (also called obrixtamig) that people with advanced cancer can tolerate. 2 different doses of BI 764532 are tested in this study. Another purpose is to check whether BI 764532 can make tumours shrink. BI 764532 is an antibody-like molecule (DLL3/CD3 bispecific) that may help the immune system fight cancer. The study has 3 parts. In Part 1, participants are put into 2 groups randomly, which means by chance. Participants have an equal chance of being in either group. One group gets dose 1 of BI 764532 and the other group gets dose 2 of BI 764532. In Part 2 and Part 3, all participants receive the same dose of BI 764532. Part 2 and Part 3 are open to people with a certain kind of tumour called extrapulmonary neuroendocrine carcinoma. All participants receive BI 764532 as an infusion into a vein when starting treatment. If there is benefit for the participants and if they can tolerate it, the treatment is given up to the maximum duration of the study. During this time, participants visit the study site regularly. The total number of visits depends on how they respond to and tolerate the treatment. The first study visits include an overnight stay to monitor participants´ safety. Doctors record any unwanted effects and regularly check the general health of the participants.

Sponsor: Boehringer Ingelheim

You may qualify if…

  • 1. Male or female participants ≥18 years old and at least at the legal age of consent in countries where it is greater than 18 years at the time of signature of the informed consent form (ICF).
  • 2. Signed and dated written informed consent in accordance with International Council for Harmonisation-Good Clinical Practice (ICH-GCP) and local legislation prior to admission to the trial.
  • 3. Part 1: Histologically or cytologically confirmed, cancer of the following histologies:
  • Small cell lung cancer (SCLC)
  • Extra-pulmonary neuroendocrine carcinoma (epNEC) (except Merkel cell carcinoma (MCC), Medullary thyroid cancer (MTC) and Neuroendocrine prostate cancer (NEPC))
  • Large cell neuroendocrine carcinoma (LCNEC) of the lung Patients with tumours with mixed histologies for any above type are eligible only if the neuroendocrine carcinoma/small tumour cells component is predominant and represents at least 50% of the overall tumour tissue.
  • Patients must have progressed or recurred after standard of care therapy
  • SCLC: after at least two prior lines of therapy, including at least one platinum-based regimen; in countries where standard of care in first line therapy includes PD-L1 inhibitor treatment patients should have received the combination of platinum-based regimen plus PD-L1 inhibitor unless they have been unable to receive checkpoint inhibitor treatment.

You may not qualify if…

  • 1. Untreated or symptomatic brain metastases. (Part 2 and part 3: identified during the mandatory assessment by brain MRI within 21 days before first trial drug administration.) Participants with treated, stable brain metastases are eligible provided they meet the following criteria:
  • Radiotherapy or surgery for brain metastases was completed at least 2 weeks prior to the first administration of BI 764532.
  • Patient is off steroids for at least 7 days (physiologic doses of steroids are permitted), and the patient is off anti-epileptic drugs for at least 7 days or on stable doses of anti-epileptic drugs for malignant central nervous system (CNS) disease.
  • 2. Presence of leptomeningeal disease or, part 2 and part 3: epidural disease including spinal cord compression.
  • 3. Part 1: Active/previous history of interstitial lung disease or non-infectious pneumonitis (any grade).
  • Part 2 and part 3: Active/previous history of interstitial lung disease, pulmonary fibrosis, organizing pneumonia or non-infectious pneumonitis (any grade). Patients with a history of therapy-related pneumonitis that is considered clinically resolved are eligible.
  • 4. Participants who experienced severe, life-threatening immune-mediated adverse events or infusion-related reactions including those that lead to permanent discontinuation while on treatment with immuno-oncology agents.
  • 5. Prior anti-cancer therapy:

Where it's recruiting

Alabama

Mobile

Arizona

Phoenix

California

Los Angeles · San Francisco

Florida

Jacksonville · Miami · Tampa

Indiana

Indianapolis

Kansas

Westwood

Kentucky

Lexington

Maryland

Baltimore

Minnesota

Rochester

New York

New York · The Bronx

Virginia

Richmond

Source: ClinicalTrials.gov · NCT05882058 · last updated 2026-07-23