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mRNA-0184

Phase 1

Chronic Heart Failure | Small molecule | Cardiovascular |Moderna, Inc.|Last Updated: Jan 20, 2026

Target and mechanism

Molecular targetrelaxin
Target classHormone
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment48

FDA Designations

No designations recorded

Clinical trial landscape

mRNA-0184 · 3 trials · 2 indications

Phase 1 3
NCT06655870A Study to Investigate Safety and Tolerability of mRNA-0184 Administered Subcutaneously in Healthy ParticipantsHealthy Participants
ACTIVE NOT_RECRUITING52 Analytics
NCT06243770Study to Investigate Safety and Tolerability of mRNA-0184 Administered Under Different Infusion Conditions in Healthy ParticipantsHealthy Participants
COMPLETED44 Analytics
NCT05659264A Study to Evaluate the Safety of mRNA-0184 in Participants With Heart FailureChronic Heart Failure
COMPLETED48 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Investigate Safety and Tolerability of mRNA-0184 Administered Subcutaneously in Healthy Participants
Healthy ParticipantsUnlock trial analytics
PHASE1COMPLETED
Study to Investigate Safety and Tolerability of mRNA-0184 Administered Under Different Infusion Conditions in Healthy Participants
Healthy ParticipantsUnlock trial analytics
PHASE1COMPLETED
A Study to Evaluate the Safety of mRNA-0184 in Participants With Heart Failure
Chronic Heart FailureUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Treatment-emergent Adverse Events (TEAEs) Including Injection Site Reactions (ISRs), Adverse Events of Special Interests (AESIs), and Serious Adverse Events (SAEs)
Day 1 through Day 50
Number of Participants with Treatment-emergent Adverse Events (TEAEs)
Day 1 through Day 57
Number of Participants with Adverse Events of Special Interest (AESIs)
Day 1 through Day 57
Number of Participants with Serious Adverse Events (SAEs)
Day 1 through Day 57

Secondary Endpoints

Serum Concentrations of Study Drug
Day 1 through Day 50
Maximum Observed Plasma Concentration (Cmax) of Study Drug
Day 1 through Day 50
Area Under the Concentration-time Curve from Time 0 to Last Quantifiable Concentration (AUC0-t) of Study Drug
Day 1 through Day 50
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
Single Ascending Dose (SAD): mRNA-0184EXPERIMENTALParticipants will receive a single subcutaneous (SC) injection of a fixed dose of mRNA-0184 on Day 1.
Multiple Ascending Dose (MAD): mRNA-0184EXPERIMENTALParticipants will receive up to 2 SC injections of a fixed dose of mRNA-0184 on Days 1 and 15.
Cohort 1: mRNA-0184 Dose Level AEXPERIMENTALSequence 1: Participants will receive infusion condition 1 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 2 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 2 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 1 of mRNA-0184 on Day 22.
Cohort 2: mRNA-0184 Dose Level BEXPERIMENTALSequence 1: Participants will receive infusion condition 1 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 2 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 2 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 1 of mRNA-0184 on Day 22.
Cohort 3: mRNA-0184 Dose Level CEXPERIMENTALSequence 1: Participants will receive infusion condition 1 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 2 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 2 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 1 of mRNA-0184 on Day 22.
Cohort 4: mRNA-0184 Dose Level DEXPERIMENTALSequence 1: Participants will receive infusion condition 3 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 4 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 4 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 3 of mRNA-0184 on Day 22.
Cohort 5: mRNA-0184 Dose Level EEXPERIMENTALSequence 1: Participants will receive infusion condition 5 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 6 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 6 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 5 of mRNA-0184 on Day 22.
Cohort 6: mRNA-0184 Dose Level FEXPERIMENTALSequence 1: Participants will receive infusion condition 5 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 6 of mRNA-0184 on Day 22. Sequence 2: Participants will receive infusion condition 6 of mRNA-0184 on Day 1, followed by a washout period of approximately 21 days. They will then receive infusion condition 5 of mRNA-0184 on Day 22.
SAD Stage: mRNA-0184EXPERIMENTALParticipants will receive a single dose of mRNA-0184.
MAD Stage: mRNA-0184EXPERIMENTALParticipants will receive up to 4 doses of mRNA-0184 administered over a treatment period of up to 16 weeks.
MAD Stage: PlaceboPLACEBO_COMPARATORParticipants will receive placebo matching to mRNA-0184 administered over a treatment period of up to 16 weeks.

Interventions

NameTypeDescription
mRNA-0184DRUGSC injection
PlaceboDRUG0.9% sodium chloride (normal saline) injection
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, electrocardiogram (ECG), and vital signs. * Body weight within 50 to 100 kilograms (kg) (inclusive) and body mass index within 18 to 32 kg/square meter (m\^2) (inclus...

Countries:AustraliaUnited StatesPolandUnited Kingdom
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Frequently asked questions about mRNA-0184

What is mRNA-0184 used for?

mRNA-0184 is an investigational drug being developed for chronic heart failure and is also being studied in healthy participants to evaluate its safety and tolerability. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

What does mRNA-0184 target?

mRNA-0184 targets relaxin, a hormone involved in cardiovascular regulation. By targeting relaxin, the drug is being investigated for its potential role in treating chronic heart failure. The exact mechanism of action is still under evaluation in clinical trials.

Who makes mRNA-0184?

mRNA-0184 is being developed by Moderna, Inc., a biotechnology company publicly traded under the ticker symbol MRNA on the NASDAQ stock exchange. Moderna is conducting Phase 1 clinical trials to evaluate the safety and tolerability of this investigational drug.

What phase is mRNA-0184 in?

mRNA-0184 is in Phase 1 clinical development. It is an investigational drug that has not yet been approved by the FDA or other regulatory agencies. The ongoing and completed trials are focused on assessing safety, tolerability, and different administration conditions in healthy participants and those with heart failure.

What clinical trials is mRNA-0184 in?

mRNA-0184 has been studied in three Phase 1 trials. NCT05659264 evaluated safety in participants with chronic heart failure and is completed. NCT06243770 and NCT06655870 investigated safety and tolerability in healthy participants under different infusion conditions and subcutaneous administration, respectively. The latter is active but not recruiting.

Is mRNA-0184 the same as relaxin?

No, mRNA-0184 is not the same as relaxin. mRNA-0184 is an investigational drug that targets the hormone relaxin. It is being developed to potentially treat chronic heart failure by modulating relaxin-related pathways, but it is a distinct therapeutic agent under clinical investigation.