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Maridebart Cafraglutide

Phase 3

Atherosclerotic Cardiovascular Disease | Small molecule | Cardiovascular |Amgen Inc.|Last Updated: Sep 3, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment12,800

FDA Designations

No designations recorded

Clinical trial landscape

Maridebart Cafraglutide · 19 trials · 14 indications

Phase 3 10Phase 2 3Phase 1 6
NCT07684144Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-2-EXTENSION)Obesity
RECRUITING950 Analytics
NCT07684235Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-1-EXTENSION)Obesity
RECRUITING3,200 Analytics
NCT07575399Efficacy, Safety and Tolerability of Switching From Glucagon-like Peptide-1 Receptor Agonists (GLP-1RA) to Maridebart Cafraglutide in Adults With Obesity or Overweight (MARITIME-SWITCH)Obesity or Overweight
RECRUITING300 Analytics
NCT07225686Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea on Positive Airway Pressure TherapyObesity
RECRUITING250 Analytics
NCT07226765Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea Not on Positive Airway Pressure (PAP) TherapyObstructive Sleep Apnea
RECRUITING250 Analytics
NCT07037433Evaluating the Impact of Maridebart Cafraglutide on Cardiovascular Outcomes in Participants With Atherosclerotic Cardiovascular Disease and Overweight or ObesityAtherosclerotic Cardiovascular Disease
RECRUITING12,800 Analytics
NCT07037459Maridebart Cafraglutide in Heart Failure With Preserved or Mildly Reduced Ejection Fraction and ObesityHeart Failure With Preserved Ejection Fraction
RECRUITING5,056 Analytics
NCT06987695Efficacy and Safety of Maridebart Cafraglutide in Adult Participants in Japan Who Have Obesity DiseaseObesity Disease
ACTIVE NOT_RECRUITING279 Analytics
NCT06858878Efficacy and Safety of Maridebart Cafraglutide in Adult Participants With Type 2 Diabetes Mellitus Who Have Obesity or Are OverweightType 2 Diabetes Mellitus (T2DM), Obesity, Overweight
ACTIVE NOT_RECRUITING1,105 Analytics
NCT06858839Evaluation of Maridebart Cafraglutide in Adult Participants Without Type 2 Diabetes Mellitus Who Have Obesity or Are OverweightObesity
ACTIVE NOT_RECRUITING3,853 Analytics
PHASE3RECRUITING
Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-2-EXTENSION)
ObesityUnlock trial analytics
PHASE3RECRUITING
Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-1-EXTENSION)
ObesityUnlock trial analytics
PHASE3RECRUITING
Efficacy, Safety and Tolerability of Switching From Glucagon-like Peptide-1 Receptor Agonists (GLP-1RA) to Maridebart Cafraglutide in Adults With Obesity or Overweight (MARITIME-SWITCH)
Obesity or OverweightUnlock trial analytics
PHASE3RECRUITING
Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea on Positive Airway Pressure Therapy
ObesityUnlock trial analytics
PHASE3RECRUITING
Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea Not on Positive Airway Pressure (PAP) Therapy
Obstructive Sleep ApneaUnlock trial analytics
PHASE3RECRUITING
Evaluating the Impact of Maridebart Cafraglutide on Cardiovascular Outcomes in Participants With Atherosclerotic Cardiovascular Disease and Overweight or Obesity
Atherosclerotic Cardiovascular DiseaseUnlock trial analytics
PHASE3RECRUITING
Maridebart Cafraglutide in Heart Failure With Preserved or Mildly Reduced Ejection Fraction and Obesity
Heart Failure With Preserved Ejection FractionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Efficacy and Safety of Maridebart Cafraglutide in Adult Participants in Japan Who Have Obesity Disease
Obesity DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Efficacy and Safety of Maridebart Cafraglutide in Adult Participants With Type 2 Diabetes Mellitus Who Have Obesity or Are Overweight
Type 2 Diabetes Mellitus (T2DM), Obesity, OverweightUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Evaluation of Maridebart Cafraglutide in Adult Participants Without Type 2 Diabetes Mellitus Who Have Obesity or Are Overweight
ObesityUnlock trial analytics

Study Endpoints

Primary Endpoints

Percent Change in Body Weight from Baseline of the Parent Trial (20210184)
Baseline of parent trial (20210184) to Week 48 of current trial
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Baseline of current trial up to 60 weeks
Percent Change in Body Weight from Baseline of the Parent Trial (20210181)
Baseline of parent trial (20210181) to Week 48 of current trial
Percent Change from Baseline in Body Weight at Week 68
Week 68
Change in Apnea-Hypopnea Index (AHI) from baseline at week 52
At week 52
Time to First Occurrence of a Composite Endpoint Consisting of: CV Death, Myocardial Infarction (MI), or Ischemic Stroke (3-point Major Adverse Cardiac Events [3-P MACE])
Up to approximately 35 months
Time to First Occurrence of a Composite Endpoint Consisting of: All-cause Death, MI, Ischemic Stroke, Coronary Revascularization, or Heart Failure (HF) Event (5-point MACE)
Up to approximately 35 months
Time to First Occurrence of a Composite Endpoint Consisting of: CV Death or HF Events
Up to approximately 35 months

Heart Failure events include: hospitalization for HF or urgent HF visits.

Percent Change From Baseline in Body Weight at Week 72
Baseline and Week 72
Participants Achieving ≥ 5% Reduction in Body Weight From Baseline at Week 72
Baseline and Week 72
Percent Change from Baseline in Liver Fat Content by Magnetic Resonance Imaging Proton Density Fat Fraction (MRI-PDFF) at Week 52
Baseline and Week 52
Percent Change from Baseline in Body Weight at Week 52
Baseline and Week 52
Change From Baseline to Week 24 in Hemoglobin A1c (HbA1c)
Baseline to Week 24
Percent Change From Baseline to Week 52 in Body Weight
Baseline and Week 52
Area Under the Plasma Concentration-time Curve (AUC) From Time 0 to Infinity (AUCinf) of AMG 133
Up to Day 120
AUC From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) of AMG 133
Up to Day 120
Maximum Observed Plasma Concentration (Cmax) of AMG 133
Up to Day 120
Change from Baseline in QTcF for Maridebart Cafraglutide
Up to Day 171

Change from baseline in QTcF for maridebart cafraglutide will be the dependent variable for calculation of model-derived placebo-corrected, change from baseline in QTcF after maridebart cafraglutide dosing.

Area Under the Plasma Concentration Time Curve from Time Zero to Infinity (AUCinf) of Maridebart Cafraglutide
Up to Day 120
Area Under the Plasma Concentration Time Curve from Time Zero to Time of Last Quantifiable Concentration (AUClast) of Maridebart Cafraglutide
Up to Day 120
Maximum Observed Plasma Concentration (Cmax) of Maridebart Cafraglutide
Up to Day 120
Change from Baseline in M-value from Hyperinsulinemic-euglycemic Clamp at Week 25
Baseline and Week 25
Area Under the Plasma Concentration-time Curve (AUC) from Time Zero to the Last Quantifiable Concentration (AUClast) of Maridebart Cafraglutide
Up to approximately 120 days
AUC from Time Zero Extrapolated to Infinity (AUCinf) of Maridebart Cafraglutide
Up to approximately 120 days
Number of Participants With Treatment-emergent Adverse Events (TEAEs)
Part A: 150 days; Part B: 207 days; Part C Cohort 12: 193 days; Part C Cohort 13: 207 days

A TEAE was defined as any adverse event (AE) which started on or after the first dose of AMG 133. Clinically significant changes in laboratory safety tests, vital signs and 12-lead electrocardiograms (ECGs) were included as AEs.

Secondary Endpoints

Percentage of Participants Achieving ≥ 5% Reduction in Body Weight from Baseline of the Parent Trial
Baseline of parent trial to Week 48 of current trial
Percentage of Participants Achieving ≥ 10% Reduction in Body Weight from Baseline of the Parent Trial
Baseline of parent trial to Week 48 of current trial
Percentage of Participants Achieving ≥ 15% Reduction in Body Weight from Baseline of the Parent Trial
Baseline of parent trial to Week 48 of current trial
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Maridebart Cafraglutide Low Dose Q4WEXPERIMENTALParticipants who received low dose of maridebart cafraglutide in the parent trial (20210184 \[NCT06858878\]) will continue to receive low dose of maridebart cafraglutide subcutaneously (SC) once in 4 weeks (Q4W).
Maridebart Cafraglutide Medium Dose Q4WEXPERIMENTALParticipants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive medium dose of maridebart cafraglutide SC Q4W.
Maridebart Cafraglutide Medium dose Q8WEXPERIMENTALParticipants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive medium dose of maridebart cafraglutide SC once in 8 weeks (Q8W).
Placebo Q4W (Received Medium Dose Maridebart Cafraglutide in Parent Trial)PLACEBO_COMPARATORParticipants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive placebo SC Q4W.
Maridebart Cafraglutide High Dose Q4WEXPERIMENTALParticipants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive high dose of maridebart cafraglutide SC Q4W.
Maridebart Cafraglutide High Dose Q8WEXPERIMENTALParticipants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive high dose of maridebart cafraglutide SC Q8W.
Placebo Q4W (Received High Dose Maridebart Cafraglutide in Parent Trial)PLACEBO_COMPARATORParticipants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive placebo SC Q4W.
Maridebart Cafraglutide High Dose Q4W (Received Placebo in the Parent Trial)EXPERIMENTALParticipants who received placebo in the parent trial will receive high dose of maridebart cafraglutide SC Q4W. Prior to initiating the assigned high dose, participants will undergo a dose-escalation phase gradually increasing doses.
Maridebart Cafraglutide Low Dose Q4W(Received Very Low Dose Maridebart Cafraglutide in Parent Trial)EXPERIMENTALParticipants who permanently de-escalated to very low dose of maridebart cafraglutide in the parent trial will receive low dose of maridebart cafraglutide SC Q4W.
Maridebart Cafraglutide High Dose Q12WEXPERIMENTALParticipants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive high dose of maridebart cafraglutide SC once in 12 weeks (Q12W).
MariTide Arm 1EXPERIMENTALParticipants will receive maridebart cafraglutide dosing schedule 1 during the treatment period.
MariTide Arm 2EXPERIMENTALParticipants will receive maridebart cafraglutide dosing schedule 2 during the treatment period.
Maridebart CafraglutideEXPERIMENTALParticipants will receive maridebart cafraglutide subcutaneously (SC).
PlaceboPLACEBO_COMPARATORParticipants will receive placebo SC.
Maridebart Cafraglutide High DoseEXPERIMENTALParticipants will receive maridebart cafraglutide high dose subcutaneously (SC) for 72 weeks.
Maridebart Cafraglutide Medium DoseEXPERIMENTALParticipants will receive maridebart cafraglutide medium dose SC for 72 weeks.
Maridebart Cafraglutide Low DoseEXPERIMENTALParticipants will receive maridebart cafraglutide low dose SC for 72 weeks.
Cohort A: Maridebart CafraglutideEXPERIMENTALPart 1: Cohort A will consist of participants without a diagnosis of type 1 or type 2 diabetes mellitus. Participants will be randomized to receive maridebart cafraglutide or placebo in 1 of 7 dose cohorts. Participants will then have the option to begin part 2 if they meet the entry criteria. Part 2: Participants that continue into part 2 will be re-randomized to receive maridebart cafraglutide or Placebo in 1 of 4 dose cohorts.
Cohort A: PlaceboPLACEBO_COMPARATORPart 1: Cohort A will consist of participants without a diagnosis of type 1 or type 2 diabetes mellitus. Participants will be randomized to receive maridebart cafraglutide or placebo in 1 of 7 dose cohorts . Participants will then have the option to begin part 2 if they meet the entry criteria. Part 2: Participants that continue into part 2 will be re-randomized to receive maridebart cafraglutide or Placebo in 1 of 4 dose cohorts.
Cohort B: Maridebart CafraglutideEXPERIMENTALPart 1: Cohort B will consist of participants with a diagnosis of type 2 diabetes mellitus. Participants will be randomized to receive maridebart cafraglutide or placebo in 1 of 4 dose cohorts. Participants will then have the option to begin part 2 if they meet the entry criteria. Part 2: Participants that continue into part 2 will be re-randomized to receive maridebart cafraglutide or Placebo in 1 of 4 dose cohorts.
Cohort B: PlaceboPLACEBO_COMPARATORPart 1: Cohort B will consist of participants with a diagnosis of type 2 diabetes mellitus. Participants will be randomized to receive maridebart cafraglutide or placebo in 1 of 4 dose cohorts. Participants will then have the option to begin part 2 if they meet the entry criteria. Part 2: Participants that continue into part 2 will be re-randomized to receive maridebart cafraglutide or Placebo in 1 of 4 dose cohorts.
Maridebart Cafraglutide SC Presentation 1EXPERIMENTALParticipants will receive a single dose of maridebart cafraglutide administered using SC presentation 1.
Maridebart Cafraglutide SC Presentation 2ACTIVE_COMPARATORParticipants will receive a single dose of maridebart cafraglutide administered using SC presentation 2.
Group 1EXPERIMENTALIn treatment period 1, participants will receive placebo for moxifloxacin. In treatment period 2, participants will receive maridebart cafraglutide. In treatment period 3, participants will receive placebo for moxifloxacin.
Group 2AEXPERIMENTALIn treatment period 1, participants will receive moxifloxacin. In treatment period 2, participants will receive placebo for maridebart cafraglutide. In treatment period 3, participants will receive placebo for moxifloxacin.
Group 2BEXPERIMENTALIn treatment period 1, participants will receive placebo for moxifloxacin. In treatment period 2, participants will receive placebo for maridebart cafraglutide. In treatment period 3, participants will receive moxifloxacin.
Group 1: Maridebart Cafraglutide Dose 1EXPERIMENTALParticipants will receive a single SC lower dose of Maridebart Cafraglutide.
Group 2: Maridebart Cafraglutide Dose 2EXPERIMENTALParticipants will receive a single SC higher dose of Maridebart Cafraglutide.
Part A: maridebart cafraglutideEXPERIMENTALUp to 7 single ascending dose cohorts (cohorts 1 to 6 and cohort 11).
Part A: PlaceboPLACEBO_COMPARATORUp to 7 single ascending dose cohorts (cohorts 1 to 6 and cohort 11).
Part B: maridebart cafraglutideEXPERIMENTALUp to 4 multiple ascending dose cohorts (cohorts 7 to 10).
Part B: PlaceboPLACEBO_COMPARATORUp to 4 multiple ascending dose cohorts (cohorts 7 to 10).
Part C: maridebart cafraglutideEXPERIMENTALUp to 2 open-label, multiple ascending dose cohorts (cohorts 12 to 13) treated with doses previously studied in Part A and Part B.

Interventions

NameTypeDescription
Maridebart CafraglutideDRUGAdministered subcutaneously.
PlaceboDRUGAdministered subcutaneously.
MoxifloxacinDRUGParticipants will receive moxifloxacin orally.
Placebo for Maridebart CafraglutideDRUGParticipants will receive placebo for maridebart cafraglutide SC.
Placebo for MoxifloxacinDRUGParticipants will receive placebo for moxifloxacin orally.
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Eligibility Criteria

Age Range18 Years to 99 Years
SexALL
Healthy VolunteersNo
Study Sites37

Inclusion Criteria: * Signed informed consent form (ICF) indicating compliance with the requirements and restrictions listed in the ICF and this protocol. * Participants completing Study 20210184 must meet the following criteria: * Completed the Week 72 visit in Study 20210184. * Did not perma...

Countries:United StatesJapanPuerto RicoAustraliaBrazilCanadaCzechiaFranceGermanyHungaryPolandSpainArgentinaAustriaBelgiumBulgariaChileChinaColombiaDenmarkFinlandGreeceHong KongItalyMexicoNetherlandsPortugalRomaniaSingaporeSlovakiaSouth KoreaSwedenSwitzerlandTaiwanTurkey (Türkiye)United Kingdom
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Recent Changes (Last 90 Days)

LOWSep 3, 2026NCT07684144lastUpdatePostDate: changed
LOWSep 3, 2026NCT07684235lastUpdatePostDate: changed
LOWSep 3, 2026NCT07037433lastUpdatePostDate: changed
LOWSep 3, 2026NCT07684144lastUpdatePostDate: changed
LOWSep 3, 2026NCT07684235lastUpdatePostDate: changed
LOWSep 3, 2026NCT07037433lastUpdatePostDate: changed
LOWAug 27, 2026NCT07684144lastUpdatePostDate: changed
LOWAug 27, 2026NCT07684235lastUpdatePostDate: changed
LOWAug 27, 2026NCT07575399lastUpdatePostDate: changed
LOWAug 27, 2026NCT07684144lastUpdatePostDate: changed
LOWAug 27, 2026NCT07684235lastUpdatePostDate: changed
LOWAug 27, 2026NCT07575399lastUpdatePostDate: changed
LOWAug 24, 2026NCT07684144Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 24, 2026NCT07684144Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 14, 2026NCT07226765lastUpdatePostDate: changed
LOWAug 14, 2026NCT07226765lastUpdatePostDate: changed
LOWAug 7, 2026NCT07313761primaryCompletionDate: changed
LOWAug 7, 2026NCT07313761primaryCompletionDate: changed
LOWAug 4, 2026NCT07225686lastUpdatePostDate: changed
LOWAug 4, 2026NCT07684235Status: NOT_YET_RECRUITING → RECRUITING

Frequently asked questions about Maridebart Cafraglutide

What is Maridebart Cafraglutide used for?

Maridebart Cafraglutide is an investigational drug being studied for obesity, overweight, and related conditions, including overweight or obesity with elevated liver fat and atherosclerotic cardiovascular disease. It is also being evaluated in adults with obstructive sleep apnea. The drug is in Phase 3 clinical development and is not yet approved.

What does Maridebart Cafraglutide target?

Maridebart Cafraglutide is a small molecule being developed by Amgen. Its specific molecular target is not disclosed in the available clinical trial information. The drug is being studied for its effects on weight management and related metabolic conditions.

Who makes Maridebart Cafraglutide?

Maridebart Cafraglutide is being developed by Amgen Inc., a biopharmaceutical company traded on NASDAQ under the ticker AMGN. Amgen is conducting Phase 3 clinical trials to evaluate the drug's efficacy and safety in obesity and overweight populations.

What phase is Maridebart Cafraglutide in?

Maridebart Cafraglutide is in Phase 3 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Amgen is currently recruiting participants for Phase 3 trials in obesity, overweight, and obstructive sleep apnea.

What clinical trials is Maridebart Cafraglutide in?

Maridebart Cafraglutide is being studied in several clinical trials, including NCT07226765, a Phase 3 trial in obstructive sleep apnea; NCT07575399, a Phase 3 trial in obesity or overweight; and NCT07226778, a Phase 1 trial in overweight and obesity. These trials are registered on ClinicalTrials.gov.

Is Maridebart Cafraglutide the same as AMG 133?

Yes, Maridebart Cafraglutide is also known as AMG 133. In clinical trial NCT07226778, the drug is referred to as Maridebart Cafraglutide (AMG 133), confirming that both names refer to the same investigational compound being developed by Amgen.