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M5542

Phase 1

Undisclosed | Monoclonal antibody | Other |Merck KGaA|Trials Updated: Sep 21, 2026

M5542 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Aug 2024

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment49

FDA Designations

No designations recorded

M5542 clinical trials

M5542 · 1 trial · 1 indication

Phase 1 1
NCT06577337Phase 1 Single Ascending Doses (SAD) of M5542 in Healthy ParticipantsHealthy
RECRUITING49 Analytics
PHASE1RECRUITING
Phase 1 Single Ascending Doses (SAD) of M5542 in Healthy Participants
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Study Endpoints

Primary Endpoints

Number of Participants with Treatment-Emergent Adverse Events (TEAEs)
Up to Day 85
Number of Participants with Abnormal Laboratory Assessments, 12-Lead Electrocardiogram (ECG), and Vital Signs
Up to Day 85

Secondary Endpoints

Pharmacokinetic (PK) Serum Concentrations of M5542
Pre-dose up to 1344 hours post-dose
Number of Participants with Anti-Drug Antibodies (ADA) Against M5542
Pre-dose up to Day 57
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeOTHER

Treatment Arms

ArmTypeDescription
M5542EXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
M5542BIOLOGICALParticipants will receive a single ascending dose of M5542 subcutaneously on Day 1.
PlaceboBIOLOGICALParticipants will receive a single dose of placebo matched to M5542 subcutaneously on Day 1.
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Eligibility Criteria

Age Range18 Years to 50 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Participants are overtly healthy, as determined by medical evaluation, by 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 eval...

Countries:Germany
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Recent Changes (Last 90 Days)

LOWSep 21, 2026NCT06577337lastUpdatePostDate: changed
LOWSep 21, 2026NCT06577337lastUpdatePostDate: changed
LOWAug 20, 2026NCT06577337lastUpdatePostDate: changed
LOWAug 20, 2026NCT06577337lastUpdatePostDate: changed

Frequently asked questions about M5542

What is M5542?

M5542 is an investigational monoclonal antibody being developed by Merck KGaA. It is in Phase 1 clinical development and is being studied in healthy adult volunteers. The specific disease or condition it is intended to treat has not been disclosed.

Who makes M5542?

M5542 is being developed by Merck KGaA, which trades over the counter in the United States under the ticker MKGAF. The company is running the Phase 1 program for this monoclonal antibody candidate.

What phase is M5542 in?

M5542 is in Phase 1 clinical development. It has not been approved by the FDA or any other regulatory agency and remains an investigational agent. One Phase 1 trial is currently recruiting participants.

What clinical trials is M5542 in?

M5542 is being studied in one Phase 1 trial, NCT06577337, titled a Phase 1 study of single ascending doses of M5542 in healthy participants. The trial is recruiting, is placebo controlled and double blind, and plans to enroll 49 participants in Germany.

What is the design of the M5542 Phase 1 trial?

The M5542 Phase 1 trial, NCT06577337, is a single ascending dose study in healthy adult volunteers aged 18 years and older. It is randomized, double blind, and placebo controlled, with a planned enrollment of 49 participants across sites in Germany.