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UBT251

Phase 3

Obesity & Overweight | Small molecule | Metabolic |United Therapeutics Corporation|Last Updated: Jun 15, 2026

Target and mechanism

ModalitySmall molecule

Also known as UBT251 group

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment600

FDA Designations

No designations recorded

Clinical trial landscape

UBT251 · 3 trials · 4 indications

Phase 3 1Phase 2 2
NCT07648225UBT251 Injection Phase Ⅲ Study (Overweight or Obesity)Obesity & Overweight
NOT YET_RECRUITING600 Analytics
PHASE3NOT YET_RECRUITING
UBT251 Injection Phase Ⅲ Study (Overweight or Obesity)
Obesity & OverweightUnlock trial analytics

Study Endpoints

Primary Endpoints

Body Weight
Week 52

Percentage change in body weight from baseline after 52 weeks of treatment

Percentage of Participants With MASH resolution With no Worsening of Fibrosis on Liver Histology
Baseline, Week 48
log-transformed urinary albumin:creatinine ratio(UACR)
24 weeks

The change in log-transformed UACR from baseline after 24 weeks of treatment

Secondary Endpoints

Waist Circumference
Through study completion, an average of one year
BMI
Through study completion, an average of one year
Systolic blood pressure
Through study completion, an average of one year
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
UBT251 Injection 4.0 mgEXPERIMENTALEach subject will receive UBT251 Injection s.c. once weekly for 52 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 52 weeks.
UBT251 Injection 6.0 mgEXPERIMENTALEach subject will receive UBT251 Injection, s.c. once weekly for 52 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 52 weeks.
UBT251 Injection Placebo 4.0 mgPLACEBO_COMPARATOREach subject will receive UBT251 Injection Placebo, s.c. once weekly for 52 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 52 weeks.
UBT251 Injection Placebo 6.0 mgPLACEBO_COMPARATOREach subject will receive UBT251 Injection Placebo, s.c. once weekly for 52 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 52 weeks.
UBT251 Low DoseEXPERIMENTALDose level 1,SC, once a week for 4 weeks; Dose level 2,SC, once a week for 4 weeks; Dose level 3,SC,once a week for 4 weeks; Dose level 3,SC, once a week for 36 weeks.
PlaceboPLACEBO_COMPARATORPlacebo administered subcutaneously (SC) once a week for 48 weeks.
UBT251 Middle DoseEXPERIMENTALDose level 2,SC, once a week for 4 weeks; Dose level 3,SC, once a week for 4 weeks; Dose level 4,SC,once a week for 4 weeks; Dose level 4,SC, once a week for 36 weeks.
UBT251 High DoseEXPERIMENTALDose level 2,SC, once a week for 4 weeks; Dose level 3,SC, once a week for 4 weeks; Dose level 4,SC,once a week for 4 weeks; Dose level 5,SC, once a week for 36 weeks.
2.0 mg groupEXPERIMENTALPatients will be treated with UBT251 s.c. once weekly for 24 weeks. The starting dose of UBT251 will be 0.5 mg subcutaneous injection with increasing doses at 5, 9 and 13 weeks to 1.0, 2.0 and 2.0 mg once weekly.
4.0 mg groupEXPERIMENTALPatients will be treated with UBT251 s.c. once weekly for 24 weeks. The starting dose of UBT251 will be 1.0 mg subcutaneous injection with increasing doses at 5, 9 and 13 weeks to 2.0, 4.0 and 4.0 mg once weekly.
6.0 mg groupEXPERIMENTALPatients will be treated with UBT251 s.c. once weekly for 24 weeks. The starting dose of UBT251 will be 1.0 mg subcutaneous injection with increasing doses at 5, 9 and 13 weeks to 2.0, 4.0 and 6.0 mg once weekly.

Interventions

NameTypeDescription
UBT251 Injection 4.0 mgDRUGUBT251 Injection subcutaneously once weekly
UBT251 Injection 6.0 mgDRUGUBT251 Injection and UBT251 Injection Placebo subcutaneously once weekly
UBT251 Injection Placebo 4.0 mgDRUGUBT251 Injection placebo subcutaneously once weekly
UBT251 Injection Placebo 6.0 mgDRUGUBT251 Injection placebo subcutaneously once weekly
UBT251DRUGUBT251 administered subcutaneously (SC) once a week.
PlaceboDRUGPlacebo,SC,once a week for 48 weeks
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Age 18-75 years (inclusive) at the time of signing the informed consent form, regardless of gender; 2. Body mass index (BMI) ≥28.0 kg/m² (obesity) or 24.0 kg/m² ≤ BMI \<28.0 kg/m² (overweight) at screening, accompanied by by at least one of the following: a. Prediabetes, hype...

Countries:China
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Recent Changes (Last 90 Days)

LOWJun 16, 2026NCT07648225NEW_TRIAL: changed
LOWJun 16, 2026NCT07648225NEW_TRIAL: changed
LOWJun 16, 2026NCT07648225NEW_TRIAL: changed
LOWJun 16, 2026NCT07648225NEW_TRIAL: changed

Frequently asked questions about UBT251

What is UBT251 used for?

UBT251 is an investigational small molecule being developed for metabolic conditions, including Type 2 Diabetes, Obesity and Overweight, and Metabolic Dysfunction-associated Steatohepatitis (MASH). It is also being studied in chronic kidney disease. UBT251 is currently in Phase 2 and Phase 3 clinical trials.

Who makes UBT251?

UBT251 is being developed by United Therapeutics Corporation, a publicly traded company with the ticker symbol UTHR. The drug is in clinical development for metabolic indications including Type 2 Diabetes, Obesity and Overweight, and MASH.

What phase is UBT251 in?

UBT251 is in Phase 2 and Phase 3 clinical development. Phase 2 trials are recruiting for obesity with chronic kidney disease and for MASH. Phase 3 trials are planned for overweight or obesity and for Type 2 Diabetes, though those have not yet started recruiting.

What clinical trials is UBT251 in?

UBT251 has four registered trials. NCT07134335 is a Phase 2 study in obesity and chronic kidney disease. NCT07145151 is a Phase 2 study in MASH. NCT07648225 is a Phase 3 study in overweight or obesity. NCT07653477 is a Phase 3 study in Type 2 Diabetes.

Is UBT251 the same as UBT251 Injection 4.0 mg?

Yes, UBT251 is also known as UBT251 Injection 4.0 mg, UBT251 Injection 2.0 mg, and UBT251 Injection 2.0 mg group. These names refer to the same investigational drug product in different dosage forms or study groups.

Is UBT251 FDA approved?

UBT251 is not FDA approved. It is an investigational drug currently in clinical trials. The drug is being studied in Phase 2 and Phase 3 trials for metabolic conditions, but approval status has not been established.