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> Record changed: 2026-10-13

# A Study in Healthy Men to Test How Well Different Doses of BI 3776528 Are Tolerated

NCT06745297

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Phase

Phase 1

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Recruitment status

Recruiting

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Participants

172

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Lead sponsor

Boehringer Ingelheim

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Start date

2025-01-23

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

Number of sites

1

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Title and summary

**Summary**

The trial aims to study the safety, tolerability, and pharmacokinetics of single and multiple rising doses of BI 3776528.

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Short title**

A Study in Healthy Men to Test How Well Different Doses of BI 3776528 Are Tolerated

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Official title**

A Two-part, Randomised, Single-blind, Placebo-controlled, Single and Multiple Rising Dose Study to Assess the Safety, Tolerability, and Pharmacokinetics of BI 3776528, Administered to Healthy Male Participants

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Status and phase

**Control arm**

Placebo

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Registry reports results**

No

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Listing at source**

Listed

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Recruitment status**

Recruiting

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Phase**

Phase 1

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Study type**

Interventional

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Dates

**Completion date**

2027-02-03

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**First posted**

2024-12-20

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Registry last updated**

2026-06-11

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Primary completion date**

2027-02-03

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Start date**

2025-01-23

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Size and sites

**Participants**

172

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Participant count basis**

Estimated

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Planned participants**

172

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Protocol amendments**

4

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Number of sites**

1

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Sponsor and oversight

**Data monitoring committee**

No

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Registry sponsor category**

Industry

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Lead sponsor**

Boehringer Ingelheim

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Source registry**

ClinicalTrials.gov

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Identifiers

**Registry ID**

NCT06745297

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**ClinicalTrials.gov ID**

NCT06745297

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

**Registry record**

Open registry record

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Study design

**Allocation**

Randomised

**Model**

Sequential

**Purpose**

Treatment

**Masking**

Single masking

**Masking description**

Part 1a of this trial is a randomized, single-blind, and placebo-controlled. Part 1b of the trial is randomized, open-label, and with a two-way crossover design. Part 2 of the trial is single-blind, randomized, and placebo-controlled.

**Masked roles**

Participants

Sources for study design

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Outcomes

### Primary outcomes

1. Part 1a and Part 2: Occurrence of any treatment-emergent adverse event assessed as drug-related by the investigator  
Timeframe: up to 62 days
2. Part 1b: AUC0-tz of BI 3776528 in plasma (area under the concentration-time curve of the analyte in plasma over the time interval from 0 to the last quantifiable data point)  
Timeframe: up to 27 days
3. Part 1b: Cmax of BI 3776528 in plasma (maximum measured concentration of the analyte in plasma)  
Timeframe: up to 27 days

### Secondary outcomes

1. Part 1a: AUC0-∞ of BI 3776528 in plasma (area under the concentration-time curve of the analyte in plasma over the time interval from 0 extrapolated to infinity)  
Timeframe: up to 27 days
2. Part 1a: Cmax of BI 3776528 in plasma  
Timeframe: up to 27 days
3. Part 1b: AUC0-∞ of BI 3776528 in plasma  
Timeframe: up to 27 days
4. Part 2: AUCτ,ss of BI 3776528 in plasma (area under the concentration-time curve of the analyte in plasma at steady state over a uniform dosing interval τ)  
Timeframe: up to 27 days
5. Part 2: Cmin,ss of BI 3776528 in plasma (minimum concentration of the analyte in plasma at steady state over a uniform dosing interval τ)  
Timeframe: up to 27 days
6. Part 2: Cmax,ss of BI 3776528 in plasma (maximum measured concentration of the analyte in plasma at steady state over a uniform dosing interval τ)  
Timeframe: up to 27 days

Sources for outcomes

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Eligibility

**Sex**

Male

**Age groups**

Adults

**Minimum age**

18 Years

**Maximum age**

50 Years

**Healthy volunteers**

Yes

### Inclusion criteria

1. Healthy male subjects according to the assessment of the investigator, as based on a complete medical history including a physical examination and clinical laboratory.
2. Age of 18 to 50 years (inclusive)
3. BMI of 18.5 to 29.9 kg/m² (inclusive), body weight above 60 kg (inclusive)
4. Signed and dated written informed consent in accordance with ICH-GCP and local legislation prior to admission to the trial.

### Exclusion criteria

1. Any finding in the medical examination (including blood pressure (BP), pulse rate (PR) or electrocardiogram (ECG)) deviating from normal and assessed as clinically relevant by the investigator
2. Repeated measurement at screening of systolic blood pressure outside the range of 90 to 140 mmHg, diastolic blood pressure outside the range of 50 to 90 mmHg, or pulse rate outside the range of 50 to 90 beats per minute (bpm)
3. Any laboratory value outside the (age-adapted) reference range that the investigator considers to be of clinical relevance, in particular, hepatic parameters (alanine transaminase (ALT), aspartate transaminase (AST), total bilirubin), renal parameters (creatinine) exceeding the upper limit of normal (ULN) after repeated measurements or abnormal thyroid stimulating hormone (TSH) values outside of the normal range after repeated measurements.
4. Any evidence of a concomitant disease assessed as clinically relevant by the investigator Further exclusion criteria apply.

Sources for eligibility

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Sites

- Charité Research Organisation GmbHBerlin, GermanyRecruiting

Sources for sites

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## References

- Related resource (www.clinicalstudies.boehringer-ingelheim.com)  
Source: [www.clinicalstudies.boehringer-ingelheim.com](https://www.clinicalstudies.boehringer-ingelheim.com/msw/datatransparency)

### Other registry identifiers (2)

- 2024-515222-92-00
- U1111-1307-8288

Sources for references

Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT06745297)

## Related records

### Drugs (1)

- [Insulin human](https://trialight.com/data/asset/insulin-human-99c024c5-521b-478f-a4e1-d5705d2c66d8.md)

### Lead sponsors (1)

- [Boehringer Ingelheim](https://trialight.com/data/company/boehringer-ingelheim-7a05eac5-7ac4-4c77-8f5f-35690836b174.md)

### Targets (1)

- [INSR](https://trialight.com/data/target/insr-76e92e6a-1d95-5282-9c03-f55293267050.md)

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