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MBX 1416

Phase 2

Postbariatric Hypoglycemia | Small molecule | Metabolic |MBX Biosciences, Inc.|Last Updated: Jul 2, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment89

FDA Designations

No designations recorded

Clinical trial landscape

MBX 1416 · 2 trials · 1 indication

Phase 2 1Phase 1 1
NCT07029412Study to Evaluate Efficacy and Dose Response of Imapextide (STEADI)Postbariatric Hypoglycemia
COMPLETED20 Analytics
PHASE2COMPLETED
Study to Evaluate Efficacy and Dose Response of Imapextide (STEADI)
Postbariatric HypoglycemiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Changes from baseline to post-treatment in glucose nadir during a standardized MMTT following different dose levels of MBX 1416.
The duration of the study will be approximately 67 days from screening to end of study (EoS) for any given participant
Number of participants with adverse events (AEs), Serious Adverse Events (SAEs)
Baseline through Day 29 (Part A) or Day 45 (Part B) and Day 21 (Part C)
Maximum Plasma Concentration (Cmax)
Baseline through Day 29 (Part A) or Day 45 (Part B) and Day 21 (Part C)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
MBX 1416 (INN imapextide)EXPERIMENTALSingle subcutaneous administration at different dose levels
MBX 1416 (Part A)EXPERIMENTALSingle ascending subcutaneous (SC) doses
MBX 1416 (Part B)EXPERIMENTALRepeated ascending subcutaneous (SC) doses
PlaceboPLACEBO_COMPARATOR -
MBX 1416 (Part C)EXPERIMENTALSingle subcutaneous (SC) dose of MBX 1416, single dose of rosuvastatin and acetaminophen.

Interventions

NameTypeDescription
MBX 1416 (INN imapextide)DRUGA single subcutaneous injection of MBX 1416 at a low dose and a high dose approximately 2 weeks apart.
MBX 1416 (Part A)DRUGSingle Ascending subcutaneous (SC) dose of MBX 1416: 10mg, 30mg,100mg, 200mg
MBX 1416 (Part B)DRUGRepeated ascending subcutaneous (SC) doses of MBX 1416: 10mg, 30mg, 100mg
PlaceboDRUGSingle dose or repeated subcutaneous (SC) dose of placebo.
MBX 1416 (Part C)DRUGSingle subcutaneous (SC) dose of MBX 1416 and the single dose of rosuvastatin and acetaminophen pharmacokinetics. The doses selected for MBX 1416 in Part C will not exceed a dose of 200mg.
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: 1. Participant must be ≥18 to ≤75 years of age at the time of signing the informed consent. 2. Participants must have undergone RYGB or SG surgery at least 12 months prior to study entry. 3. Participants should have a documented history of PBH, defined as Whipple's triad (sympto...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMAug 2, 2026NCT07029412TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT07029412TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT07029412TRIAL_REMOVED: changed
MEDIUMAug 2, 2026NCT07029412TRIAL_REMOVED: changed
HIGHJul 2, 2026NCT07029412Status: RECRUITING → COMPLETED
HIGHJul 2, 2026NCT07029412Status: RECRUITING → COMPLETED
HIGHJul 2, 2026NCT07029412Status: RECRUITING → COMPLETED

Frequently asked questions about MBX 1416

What is MBX 1416 used for?

MBX 1416 is an investigational small molecule being developed for the treatment of postbariatric hypoglycemia, a condition of low blood sugar that can occur after bariatric surgery. It is in Phase 2 clinical development and is not yet approved by the FDA.

Who makes MBX 1416?

MBX 1416 is being developed by MBX Biosciences, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol MBX. The company is conducting clinical trials to evaluate the safety and efficacy of this investigational drug.

What phase is MBX 1416 in?

MBX 1416 is in Phase 2 clinical development for postbariatric hypoglycemia. It has completed two clinical trials, including a Phase 1 study in healthy subjects and a Phase 2 study in patients with the condition. The drug remains investigational and has not received FDA approval.

What clinical trials is MBX 1416 in?

MBX 1416 has completed two clinical trials. NCT06036784 was a Phase 1 study in 69 healthy subjects evaluating safety, tolerability, pharmacokinetics, and pharmacodynamics. NCT07029412, also known as STEADI, was a Phase 2 study in 20 patients with postbariatric hypoglycemia evaluating efficacy and dose response.

Is MBX 1416 the same as Imapextide?

Yes, MBX 1416 is also known as Imapextide. The Phase 2 clinical trial NCT07029412, titled 'Study to Evaluate Efficacy and Dose Response of Imapextide (STEADI)', uses the name Imapextide to refer to the same investigational drug being developed by MBX Biosciences.