AzTrials
AzTrials

Hepatic ImpairmentPhase 1NCT04546789

Effect of Hepatic Impairment on M2951 (BTK Inhibitor) PK

A Phase 1 study testing M2951 (BTK inhibitor) in people with Hepatic Impairment, run by Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany at 1 site in Germany.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This study was to investigate the pharmacokinetic (PK) and safety of M2951 (Bruton's tyrosine kinase [BTK] inhibitor) in participants with different degrees of hepatic impairment compared to participants with normal hepatic function. Read more about this study

Who is it for?
Ages 18 to 79 yearsHealthy volunteers can take part
Conditions the study is for
Hepatic Impairment
What is being tested?
M2951 (BTK inhibitor)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
24 participants
Where
1 siteGermany
Study dates
30 Sep 2020to 16 May 2021
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 to 79 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Participants with normal hepatic function only will be overtly healthy as determined by medical evaluation, including no clinically significant abnormality identified on physical examination or laboratory evaluation and no active clinically significant disorder, condition, infection or disease that would pose a risk to participant safety or interfere with the study evaluation, procedures, or completion OR
  • Participants with moderately impaired hepatic function only will be considered to have moderately (Child-Pugh class B and confirmed liver cirrhosis) impaired hepatic function and has been clinically stable for at least 1 month prior to Screening OR
  • Participants with mildly impaired hepatic function only will be considered to have mildly (Child-Pugh class A and confirmed liver cirrhosis) impaired hepatic function and has been clinically stable for at least 1 month prior to Screening
  • Have a body weight within 50.0 and 120.0 kilogram (kg) and body mass index (BMI) within the range 19.0 and 36.0 kilogram per square meter (kg/m^2)
  • Female participants are not pregnant or breastfeeding, and at least one of the following conditions applies
  • Not a woman of childbearing potential (WOCBP)
  • Other protocol defined inclusion criteria could apply

Who cannot join

  • Clinical history of autoimmune disorder with hepatic influence (Hashimoto thyroiditis and rheumatic diseases allowed)
  • History of any malignancy
  • Diseases and surgeries of the gastrointestinal tract, which could influence the gastrointestinal anatomy and mobility. Prior history of cholecystectomy or inflammatory bowel disease, and any clinically relevant surgery within 6 months prior to Screening
  • History of chronic or recurrent acute infection or any bacterial, viral, parasitic or fungal infections within 30 days prior to Screening and at any time between Screening and admission, or hospitalization due to infection within 6 months prior to Screening
  • History of shingles within 12 months prior to Screening
  • History of drug hypersensitivity, ascertained or presumptive allergy/hypersensitivity to the active drug substance and/or formulation ingredients; history of serious allergic reactions leading to hospitalization or any other hypersensitivity reaction in general, which may affect the safety of the participant and/or outcome of the trial per the Investigator's discretion
Show all 10Show fewer
  • Participants with impaired hepatic function will be excluded who had Primary and secondary biliary cirrhosis.
  • Participants with impaired hepatic function will be excluded with Clinical evidence of severe ascites.
  • Participants with impaired hepatic function will be excluded with Hepatic encephalopathy Grade greater than 1
  • Other protocol defined exclusion criteria could apply

Trial locations and contacts

1 site in 1 country.

Germany1 site
  • CRS Clinical Research Services Kiel GmbH

    Kiel

Other trials in Germany

About this study

Official title: Phase I Open-label, Single Dose Study to Investigate the Effect of Hepatic Impairment on the PK of Evobrutinib (M2951)

This study was to investigate the pharmacokinetic (PK) and safety of M2951 (Bruton's tyrosine kinase [BTK] inhibitor) in participants with different degrees of hepatic impairment compared to participants with normal hepatic function.

Being tested
M2951 (BTK inhibitor)
Keywords
Hepatic Impairment, Pharmacokinetics

What participants receive

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

  • M2951 (BTK inhibitor)Drug

    Also called Evobrutinib

    Participants received a single oral dose of M2951 (BTK inhibitor) on Day 1.

Study groups in NCT04546789
Study groupRoleWhat they receive
Group 1: Normal Hepatic Function (Reference)ExperimentalParticipants with normal hepatic function received single oral dose of 30 milligrams (mg) M2951 (3 film-coated tablets of 10 mg) on Day 1 after a standard breakfast.
Receives: Drug: M2951 (BTK inhibitor)
Group 2: Mild Hepatic ImpairmentExperimentalParticipants with mild hepatic impairment (Child-Pugh Class A, score 5 to 6) received single oral dose of 30 mg M2951 (3 film-coated tablets of 10 mg) on Day 1 after a standard breakfast. The Child-Pugh Score was a scoring system used to determine the prognosis with cirrhosis and need for liver transplantation. Scoring is based upon serum albumin, ascites, serum bilirubin, prothrombin time, and encephalopathy. Each category is based on a scoring system of 1-3 with 3 being the worst and a total score range of 5-15. It is broken into categories A (score of 5-6), B (score of 7-9), and C (score of 10-15) with worsening from A to C for prognosis.
Receives: Drug: M2951 (BTK inhibitor)
Group 3: Moderate Hepatic ImpairmentExperimentalParticipants with moderate hepatic impairment (Child-Pugh Class B, score 7 to 9) received single oral dose of 30 mg M2951 (3 film-coated tablets of 10 mg) on Day 1 after a standard breakfast. The Child-Pugh Score was a scoring system used to determine the prognosis with cirrhosis and need for liver transplantation. Scoring is based upon serum albumin, ascites, serum bilirubin, prothrombin time, and encephalopathy. Each category is based on a scoring system of 1-3 with 3 being the worst and a total score range of 5-15. It is broken into categories A (score of 5-6), B (score of 7-9), and C (score of 10-15) with worsening from A to C for prognosis.
Receives: Drug: M2951 (BTK inhibitor)

What is being measured

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

  1. Area Under the Plasma Concentration Time Curve From Time Zero to Infinity (AUC0-inf) of M2951

    AUC0-inf was calculated by combining AUC0-tlast and AUCextra. AUCextra represents an extrapolated value obtained by Clast pred/Lambda z, where Clast pred was the calculated plasma concentration at the last sampling time point at which the measured plasma concentration is at or above the Lower Limit of quantification (LLOQ) and Lambda z was the apparent terminal rate constant determined by log-linear regression analysis of the measured plasma concentrations of the terminal log-linear phase.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  2. Maximum Observed Plasma Concentration (Cmax) of M2951

    Cmax was obtained directly from the plasma concentration versus time curve.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

Secondary outcomes (32)
  1. Number of Participants With Treatment-Emergent Adverse Events (TEAEs)

    An adverse event (AE) was defined as any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of study drug, whether or not considered related to the study drug. A serious AE was an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAEs were defined as events that started or worsened that in severity after at least one dose of the study intervention has been administered. TEAEs included both serious TEAEs and non-serious TEAEs.

    Measured: up to follow-up (Day 6)

  2. Change From Baseline in Hematology Parameters: Basophils, Eosinophils, Leukocytes, Lymphocytes, Monocytes, Neutrophils, Platelets and Reticulocytes

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameters: basophils, eosinophils, leukocytes, lymphocytes, monocytes, neutrophils, platelets and reticulocytes. Change from baseline in hematology parameters: basophils, eosinophils, leukocytes, lymphocytes, monocytes, neutrophils, platelets, and reticulocytes at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  3. Change From Baseline in Hematology Parameters: Basophils/Leukocytes, Eosinophils/Leukocytes, Lymphocytes/Leukocytes, Monocytes/Leukocytes, Neutrophils/Leukocytes and Reticulocytes/Erythrocytes

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameters: basophils/leukocytes, eosinophils/leukocytes, lymphocytes/leukocytes, monocytes/leukocytes, neutrophils/leukocytes and reticulocytes/erythrocytes. Change From Baseline in hematology parameters: basophils/leukocytes, eosinophils/leukocytes, lymphocytes/leukocytes, monocytes/leukocytes, neutrophils/leukocytes and reticulocytes/erythrocytes at Day 2 and Day 6 were reported in percentage.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  4. Change From Baseline in Hematology Parameter: Erythrocytes Mean Corpuscular Hemoglobin

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: erythrocytes mean corpuscular hemoglobin. Change from baseline in hematology parameter: erythrocytes mean corpuscular hemoglobin at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  5. Change From Baseline in Hematology Parameters: Erythrocytes Mean Corpuscular Volume

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: erythrocytes mean corpuscular volume. Change from baseline in hematology parameter: erythrocytes mean corpuscular volume at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  6. Change From Baseline in Hematology Parameter: Erythrocytes

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameters: erythrocytes. Change from baseline in hematology parameters: erythrocytes at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  7. Change From Baseline in Hematology Parameter: Hematocrit

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: hematocrit. Change from baseline in hematology parameter: hematocrit at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  8. Change From Baseline in Hematology Parameter: Hemoglobin

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: hemoglobin. Change from baseline in hematology parameter: hemoglobin at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  9. Change From Baseline in Hematology Parameter: Prothrombin International Normalized Ratio

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: Prothrombin International Normalized Ratio. International Normalized Ratio (INR) is calculated based on the prothrombin time (PT) test results. The INR is the ratio of a participant's prothrombin time to a normal (control) sample, raised to the power of the International Sensitivity Index (ISI) value for the analytical system being used. Change from baseline in hematology parameter: prothrombin international normalized ratio at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  10. Change From Baseline in Hematology Parameter: Prothrombin Time

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the hematology parameter: prothrombin time. Prothrombin Time measures how long it takes for a clot to form in a blood sample. Change from baseline in hematology parameter: prothrombin time at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  11. Change From Baseline in Chemistry Parameters: Alanine Aminotransferase, Alkaline Phosphatase, Amylase, Aspartate Aminotransferase, Creatine Kinase, Gamma Glutamyl Transferase, Lactate Dehydrogenase, Lipase

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the chemistry parameters: Alanine Aminotransferase (ALT), Alkaline Phosphatase (ALP), Amylase, Aspartate Aminotransferase (AST), Creatine Kinase (CK), Gamma Glutamyl Transferase (GGT), Lactate Dehydrogenase (LDH) and Lipase. Change from baseline in chemistry parameters: ALT, ALP, Amylase, AST, CK, GGT, LDH and Lipase at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  12. Change From Baseline in Chemistry Parameters: Albumin and Protein

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the chemistry parameters: Albumin and Protein. Change from baseline in chemistry parameters: albumin and protein level at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  13. Change From Baseline in Chemistry Parameters: Bilirubin, Creatinine and Urate

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the chemistry parameters: Bilirubin, Creatinine and Urate. Change from baseline in chemistry parameters: bilirubin, creatinine and urate level at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  14. Change From Baseline in Chemistry Parameter: C Reactive Protein

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the chemistry parameter: C Reactive Protein. Change from baseline in chemistry parameters: C Reactive Protein level at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  15. Change From Baseline in Chemistry Parameters: Calcium, Chloride, Cholesterol, Glucose, Magnesium, Phosphate, Potassium, Sodium, Triglycerides, Urea and Urea Nitrogen

    Blood samples were collected in a fasted condition (after a fast of at least 8 hours) to analyze the chemistry parameters: Calcium, Chloride, Cholesterol, Glucose, Magnesium, Phosphate, Potassium, Sodium, Triglycerides, Urea and Urea Nitrogen. Change from baseline in chemistry parameters: Calcium, Chloride, Cholesterol, Glucose, Magnesium, Phosphate, Potassium, Sodium, Triglycerides, Urea and Urea Nitrogen level at Day 2 and Day 6 were reported.

    Measured: Baseline, Day 2 and follow-up (Day 6)

  16. Change From Baseline in 12-lead Electrocardiogram (ECG) Parameter: Heart Rate

    12-lead ECG recordings were obtained after the participants have rested for at least 5 minutes in supine position by using an ECG machine that automatically calculates the heart rate. Change from baseline in 12-lead ECG parameter: heart rate at Day 1 and Day 6 were reported.

    Measured: Baseline, Day 1 and follow-up (Day 6)

  17. Change From Baseline in 12-lead Electrocardiogram (ECG) Parameters: PQ/PR Interval, QRS Duration, QT Interval, Corrected QT Interval Using Fridericia's Formula (QTcF) and RR Duration at Day 1 and Day 6

    12-lead ECG recordings were obtained after the participants have rested for at least 5 minutes in supine position by using an ECG machine that automatically measures PQ/PR, QRS, QT, and QTc intervals and RR duration. Change From Baseline in 12-ECG parameters: PQ/PR interval, QRS duration, QT interval, QTcF interval and RR duration at Day 1 and Day 6 were reported.

    Measured: Baseline, Day 1 and follow-up (Day 6)

  18. Change From Baseline in Vital Sign Parameters: Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)

    SBP and DBP were measured in the semi-supine position with a completely automated device after at least 5 minutes of rest for the participant in a quiet sitting without distractions. Change from baseline in SBP and DBP at Days 1, 2 and 6 were reported.

    Measured: Baseline, Day 1, Day 2 and follow-up (Day 6)

  19. Change From Baseline in Vital Sign Parameter: Pulse Rate

    Pulse rate was measured in the semi-supine position with a completely automated device after at least 5 minutes of rest for the participant in a quiet setting without distractions. Change from baseline in vital sign parameter: pulse rate at Days 1, 2 and 6 were reported.

    Measured: Baseline, Day 1, Day 2 and follow-up (Day 6)

  20. Change From Baseline in Vital Sign Parameter: Respiratory Rate

    Respiratory rate was measured in the semi-supine position with a completely automated device after at least 5 minutes of rest for the participant in a quiet setting without distractions. Change from baseline in vital sign parameter: respiratory rate at Days 1, 2 and 6 were reported.

    Measured: Baseline, Day 1, Day 2 and follow-up (Day 6)

  21. Change From Baseline in Vital Sign Parameter: Temperature

    Temperature was measured in the semi-supine position after at least 5 minutes of rest for the participant in a quiet setting without distractions. Change from baseline in vital sign parameter: temperature at Days 1, 2 and 6 were reported.

    Measured: Baseline, Day 1, Day 2 and follow-up (Day 6)

  22. Time to Reach the Maximum Plasma Concentration (Tmax) of M2951

    Tmax was obtained directly from the concentration versus time curve.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  23. Apparent Elimination Half Life (t1/2) of M2951

    T1/2 was defined as the time required for the concentration or amount of drug in the body to be reduced by one-half. T1/2 was calculated by natural log 2 divided by Lambda z. Lambda z was determined from the terminal slope of the log-transformed plasma concentration curve using linear regression method.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  24. Area Under The Plasma Concentration-Time Curve From Time Zero to Time 12 Hours (AUC0-12) of M2951

    AUC0-12 of M2951 was defined as the area under the plasma concentration time curve from time 0 to 12 hours post-dose.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0 and 12.0 hours post-dose

  25. Area Under the Plasma Concentration-Time Curve From Time Zero to Time 24 Hours (AUC0-24) of M2951

    AUC0-24 of M2951 was defined as the area under the plasma concentration time curve from time 0 to 24 hours post-dose.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0 and 24.0 hours post-dose

  26. Area Under the Plasma Concentration-Time Curve From Time Zero to the Time of the Last Quantifiable Concentration (AUC0-tlast) of M2951

    Area under the plasma concentration versus time curve from time zero to the last sampling time t at which the concentration was at or above the lower limit of quantification (LLOQ). AUC0-tlast was calculated according to the mixed log-linear trapezoidal rule.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  27. Apparent Total Body Clearance (CL/f) of M2951

    CL/f was a measure of the rate at which a drug was metabolized or eliminated by normal biological processes. CL/f was calculated as Dose/AUC0-inf, where AUC0-inf was estimated by determining the total area under the curve of the concentration versus time curve extrapolated to infinity. AUC0-inf was calculated as AUC0-t + Clast pred/Lambda Z, where Clast pred was the calculated plasma concentration at the last sampling time point at which the measured plasma concentration was at or above the lower limit of quantification (LLOQ) and Lambda Z was the apparent terminal rate constant determined from the terminal slope of the log-transformed plasma concentration curve.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  28. Apparent Volume of Distribution During Terminal Phase (VZ/f) of M2951

    Vz/f is defined as the distribution of a study drug between plasma and the rest of the body after oral dosing. Vz/f = Dose/(AUC0-infinity multiply by Lambda z) following single dose. AUC0-inf was calculated by combining AUC0-tlast and AUCextra. AUCextra represents an extrapolated value obtained by Clast pred/Lambda z, where Clast pred was the calculated plasma concentration at the last sampling time point at which the measured plasma concentration is at or above the Lower Limit of quantification (LLOQ) and Lambda z was the apparent terminal rate constant determined by log-linear regression analysis of the measured plasma concentrations of the terminal log-linear phase.

    Measured: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose

  29. Fraction of Unbound Drug (fu) of M2951

    fu is defined as the ratio of unbound drug concentration to the total drug concentration.

    Measured: 1.5, 4, and 12 hours post-dose

  30. Area Under Plasma Concentration for Unbound Drug (M2951) From Time Zero to Infinity (AUC0-inf,u)

    AUC0-inf,u was calculated as fu * AUC0-inf. fu was defined as the ratio of unbound drug concentration to the total drug concentration. AUC0-inf was calculated by combining AUC0-t and AUCextra. AUCextra represents an extrapolated value obtained by Clast pred/Lambda z, where Clast pred was the calculated plasma concentration at the last sampling time point at which the measured plasma concentration is at or above the Lower Limit of quantification (LLOQ) and Lambda z was the apparent terminal rate constant determined by log-linear regression analysis of the measured plasma concentrations of the terminal log-linear phase.

    Measured: 1.5, 4, and 12 hours post-dose

  31. Maximum Observed Plasma Concentration of Unbound M2951 (Cmax, u)

    Cmax,u was calculated as fu * Cmax. fu was defined as the ratio of unbound drug concentration to the total drug concentration. Cmax was obtained directly from the concentration versus time curve.

    Measured: 1.5, 4, and 12 hours post-dose

  32. Apparent Oral Clearance (CL,u/F) of Unbound M2951

    CL,u/F was calculated as Dose divided by AUC0-inf, u. AUC0-inf,u was calculated as fu * AUC0-inf. fu was defined as the ratio of unbound drug concentration to the total drug concentration. AUC0-inf was calculated by combining AUC0-t and AUCextra. AUCextra represents an extrapolated value obtained by Clast pred/Lambda z, where Clast pred was the calculated plasma concentration at the last sampling time point at which the measured plasma concentration is at or above the Lower Limit of quantification (LLOQ) and Lambda z was the apparent terminal rate constant determined by log-linear regression analysis of the measured plasma concentrations of the terminal log-linear phase.

    Measured: 1.5, 4, and 12 hours post-dose

Timeline

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

  1. First posted14 Sep 2020
  2. Study start30 Sep 2020
  3. Primary completion16 May 2021
  4. Study completion16 May 2021

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
Parallel groups
Masking
None (open label)
Enrolment
24 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04546789
Sponsor's protocol ID
MS200527_0059
Other IDs
2020-001920-32
Status last verified
Sep 2025
First submitted
10 Sep 2020
Last updated
28 Oct 2025
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: We are committed to enhancing public health through responsible sharing of clinical trial data. Following approval of a new product or a new indication for an approved product in both the US and the European Union, the study sponsor and/or its affiliated companies will share study protocols, anonymized patient data and study level data, and redacted clinical study reports with qualified scientific and medical researchers, upon request, as necessary for conducting legitimate research. Further information on how to request data can be found on our website http://bit.ly/IPD21

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing M2951 (BTK inhibitor) in people with Hepatic Impairment, run by Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany at 1 site in Germany.

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 7 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: finished, as of the sponsor's last update on 28 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. 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 28 Oct 2025). 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?

Area Under the Plasma Concentration Time Curve From Time Zero to Infinity (AUC0-inf) of M2951 (time frame: Pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 24.0 and 32.0 hours post-dose). The study lists 2 primary outcomes in all. 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 28 Oct 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in