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Solid TumorsPhase 1NCT05839600

A Study to Find a Suitable Dose of BI 1821736 and Test Whether it Helps People With Advanced Cancer

A Phase 1 study testing BI 1821736 in people with Solid Tumors, run by Boehringer Ingelheim at 8 sites in 4 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study is open to adults with advanced solid tumours. People with solid tumours for whom previous treatment was not successful or no treatment exists can take part. The purpose of this study is to find the highest dose of a medicine called BI 1821736 that people with advanced solid tumours can tolerate. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumors
What is being tested?
BI 1821736
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
10 participants
Where
8 sitesin 4 countries
Study dates
7 Jun 2023to 10 Apr 2025
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Histologically confirmed diagnosis of malignant tumor.
  • Advanced, unresectable and/or metastatic or relapsed/refractory solid tumors.
  • Has failed conventional treatment or for whom no therapy of proven efficacy exists or who is not eligible for established treatment options. Patient must have exhausted available treatment options known to prolong survival for their disease.
  • Has at least one tumoral lesion which is amenable to biopsy.
  • Signed and dated, written informed consent form (ICF) in accordance with ICH-GCP and local legislation obtained prior to any trial-specific procedures, sampling, or analyses that are not part of normal standard of practice care.
  • Eastern Cooperative Oncology Group score of 0 or 1.
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  • Adequate organ function or bone marrow reserve defined as demonstrated at screening by the following laboratory values:
  • Absolute neutrophil count (ANC) ≥ 1.5 x 109/L (≥ 1.5 x 10^3/μL)(≥ 1500/mm^3); haemoglobin ≥ 90 g/L (≥ 9.0 g/dL)(≥ 5.6 mmol/L); platelets ≥ 100 x 10^9/L (≥ 100 x 10^3/μL)(≥ 100 x 10^3/mm^3) without the use of haematopoietic growth factors within 4 weeks of start of trial medication.
  • Creatinine ≤ 1.5 times the upper limit of normal (ULN).
  • Total bilirubin ≤ 1.5 times the ULN, except for patients with Gilbert's syndrome: total bilirubin ≤ 3 times ULN or direct bilirubin ≤ 1.5 times ULN.
  • Aspartate transaminase (AST) and alanine transaminase (ALT) ≤ 3 times ULN if no demonstrable liver metastases, or otherwise ≤ 5 x ULN if transaminase elevation is attributable to liver metastases.
  • Partial thromboplastin (PT) / activated partial thromboplastin time (aPTT) <1.5 times ULN unless on a stable dose of an anticoagulant.
  • 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 peripheral neuropathy which must be ≤ CTCAE Grade 2 and amenorrhea/menstrual disorders which can be any grade).
  • Further inclusion criteria apply

Who cannot join

  • Major surgery (major according to the investigator's assessment) performed within 4 weeks prior to start of study treatment.
  • Previous treatment with Vesicular Stomatitis Virus (VSV)-based agents.
  • Patients with brain metastases unless they have completed brain radiotherapy and are asymptomatic.
  • Radiotherapy within 4 weeks prior to the start of study treatment, except in case of a brief course of palliative radiotherapy (e.g. for analgesic purpose or for lytic lesions at risk of fracture) which can then be completed within two weeks prior to start of study treatment.
  • Note: No radiation must have been given to any lesions planned to be biopsied within 6 months of start of treatment.
  • Prior (within 3 weeks of first dose) or concomitant use of systemic corticosteroids (>10 mg daily prednisone or equivalent).
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  • Prior (within 3 weeks of first dose or less than 5 half-lives) or concomitant use of a medication or a condition considered a high risk for complications from biopsy as per the Investigator's judgement.
  • Prior (within 3 weeks of first dose or less than 5 half-lives) or concomitant use of interferon, immunotherapy agents, or tamoxifen.
  • Active infection requiring systemic therapy (antibacterial, antiviral, antiparasitic or antifungal therapy) at the start of treatment in the trial.
  • Further exclusion criteria apply

Trial locations and contacts

8 sites in 4 countries.

8 sites in 4 countries

Spain4 sites
  • Hospital Quiron. I.C.U.

    Barcelona, 08023

  • Hospital Clínic de Barcelona

    Barcelona, 08036

  • Hospital Universitario 12 de Octubre

    Madrid, 28041

  • Instituto Valenciano de Oncología

    Valencia, 46009

Other trials in Spain

United States2 sites
  • Yale Cancer Center

    New Haven, Connecticut, 06511

  • NEXT Oncology-San Antonio-65273

    San Antonio, Texas, 78229

Other trials in United States

Canada1 site
  • Princess Margaret Cancer Centre

    Toronto, Ontario, M5G 2M9

Other trials in Canada

Sweden1 site
  • Karolinska Universitetssjukhuset Stockholm

    Stockholm, 17177

Other trials in Sweden

About this study

Official title: An Open-label, Phase I Dose Escalation and Expansion Trial to Investigate Safety and Efficacy of BI 1821736 in Patients With Advanced Solid Tumors

This study is open to adults with advanced solid tumours. People with solid tumours for whom previous treatment was not successful or no treatment exists can take part.

The purpose of this study is to find the highest dose of a medicine called BI 1821736 that people with advanced solid tumours can tolerate. BI 1821736 is a type of immunotherapy. It is a special virus that kills cancer cells and helps the immune system fight cancer. In this study, BI 1821736 is given to humans for the first time.

Participants receive BI 1821736 as an infusion into a vein about every 3 weeks for up to 3 months. Study doctors regularly check the participants' health and monitor the tumours. The doctors also take note of any unwanted effects that could have been caused by BI 1821736.

Conditions
Solid Tumors
Being tested
BI 1821736

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • BI 1821736Drug

    Solution for infusion/injection

Study groups in NCT05839600
Study groupRoleWhat they receive
BI 1821736 low doseExperimentalParticipants received a low dose of BI 1821736 as an infusion into a vein about every 3 weeks for up to 3 months.
Receives: Drug: BI 1821736
BI 1821736 high doseExperimentalParticipants received a high dose of BI 1821736 as an infusion into a vein about every 3 weeks for up to 3 months.
Receives: Drug: BI 1821736

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Occurrence of DLTs in the MTD Evaluation Period

    Occurrence of dose limiting toxicities (DLTs) in the maximum tolerated dose (MTD) evaluation period is reported as count of participants with DLTs in the MTD evaluation period.

    Measured: First treatment cycle, i.e., 21 days.

Secondary outcomes (2)
  1. Occurrence of DLTs During the On-treatment Period

    Occurrence of DLTs during the on-treatment period is reported as count of participants with DLTs during the on-treatment period.

    Measured: From first study drug administration until end of study drug administration + 15 days of residual effect period (REP), up to 80 days.

  2. Occurrence of AEs During the On-treatment Period

    Occurrence of adverse events (AEs) during the on-treatment period is reported as count of participants with AEs during the on-treatment period.

    Measured: From first study drug administration until end of study drug administration + 15 days of residual effect period (REP), up to 80 days.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted3 May 2023
  2. Study start7 Jun 2023
  3. Primary completion10 Apr 2025
  4. Study completion10 Apr 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05839600
Sponsor's protocol ID
1467-0001
Other IDs
2022-502125-17-00, U1111-1291-2873
Status last verified
May 2026
First submitted
21 Apr 2023
Last updated
22 May 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No: Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization). For more details refer to: URL: https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing BI 1821736 in people with Solid Tumors, run by Boehringer Ingelheim at 8 sites in 4 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 14 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 22 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in Spain, United States, Canada, Sweden. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 22 May 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Occurrence of DLTs in the MTD Evaluation Period (time frame: First treatment cycle, i.e., 21 days.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 May 2026; AzTrials last refreshed its copy on 6 Nov 2026.

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