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Bivamelagon

Phase 2

Hypothalamic Obesity | Small molecule | Endocrine |Rhythm Pharmaceuticals, Inc.|Trials Updated: Feb 10, 2026

Bivamelagon development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since Sep 2025

Bivamelagon target and mechanism

Molecular targetMC4R
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment25

FDA Designations

No designations recorded

Bivamelagon clinical trials

Bivamelagon · 1 trial · 1 indication

Phase 2 1
NCT07156578A Long-Term Study of Bivamelagon in Participants With Hypothalamic Obesity (HO)Hypothalamic Obesity
ENROLLING BY_INVITATION25 Analytics
PHASE2ENROLLING BY_INVITATION
A Long-Term Study of Bivamelagon in Participants With Hypothalamic Obesity (HO)
Hypothalamic ObesityUnlock trial analytics

Study Endpoints

Primary Endpoints

Safety and tolerability of bivamelagon as assessed by the number and frequency of AEs
Baseline to up to 2 years

Secondary Endpoints

Mean change and mean percentage change from Baseline in BMI in participants ≥18 years of age.
Baseline to up to 2 years
Mean change in BMI z-score in participants >18 years of age.
Baseline to up to 2 years
Mean change in and mean percentage change in weight
Baseline to up to 2 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Bivamelagon (open-label)EXPERIMENTAL -

Interventions

NameTypeDescription
BivamelagonDRUGdaily dose of oral bivamelagon
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Eligibility Criteria

Age Range12 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites9

Key Inclusion Criteria: * Completed LG-MCCL005 and participant demonstrated adequate safety and tolerability in that study as determined by the Investigator. * Agree to use a highly effective form of contraception and follow contraception requirements throughout the study and for 90 days after. Ke...

Countries:United StatesUnited Kingdom
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Frequently asked questions about Bivamelagon

What is Bivamelagon used for?

Bivamelagon is an investigational small molecule being developed for the treatment of hypothalamic obesity, a form of obesity that results from damage to the hypothalamus. It is currently in Phase 2 clinical development and is not yet approved by regulatory authorities.

What does Bivamelagon target?

Bivamelagon targets the melanocortin 4 receptor (MC4R), a key regulator of energy balance and appetite. By acting on this receptor, the drug aims to address the underlying mechanisms of hypothalamic obesity.

Who makes Bivamelagon?

Bivamelagon is being developed by Rhythm Pharmaceuticals, Inc., a biopharmaceutical company focused on rare genetic diseases of obesity. The company's stock is traded under the ticker symbol RYTM on the NASDAQ.

What phase is Bivamelagon in?

Bivamelagon is currently in Phase 2 clinical development. It is an investigational drug, meaning it has not been approved by the FDA or other regulatory agencies and is still undergoing clinical trials to evaluate its safety and efficacy.

What clinical trials is Bivamelagon in?

Bivamelagon is being studied in a Phase 2 clinical trial with the identifier NCT07156578. This long-term study is enrolling 25 participants with hypothalamic obesity by invitation in the United States and United Kingdom. The trial is open to individuals aged 12 years and older.

Is Bivamelagon the same as setmelanotide?

No, Bivamelagon is a distinct investigational drug developed by Rhythm Pharmaceuticals. It is a small molecule targeting the MC4R pathway, whereas setmelanotide is a separate, already-approved therapy for certain forms of obesity. Bivamelagon is not an alternative name for setmelanotide.