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Taldefgrobep Alfa

Phase 3

Spinal Muscular Atrophy | Small molecule | Neurology |Biohaven Ltd.|Trials Updated: Jun 1, 2026

Taldefgrobep Alfa development status

Highest phase Phase 3
Registered trials 3 across 3 sponsors since May 2014

Taldefgrobep Alfa target and mechanism

Molecular targetmyostatin
ModalitySmall molecule

Also known as BHV-2000, BMS-986089

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment419

FDA Designations

ORPHAN_DRUGFAST_TRACK

Taldefgrobep Alfa clinical trials

Taldefgrobep Alfa · 2 trials · 5 indications

Phase 3 1Phase 2 1
NCT05337553A Study to Evaluate the Efficacy and Safety of Taldefgrobep Alfa in Participants With Spinal Muscular AtrophySpinal Muscular Atrophy
ACTIVE NOT_RECRUITING269 Analytics
PHASE3ACTIVE NOT_RECRUITING
A Study to Evaluate the Efficacy and Safety of Taldefgrobep Alfa in Participants With Spinal Muscular Atrophy
Spinal Muscular AtrophyUnlock trial analytics

Study Endpoints

Primary Endpoints

Efficacy of taldefgrobep alfa compared to placebo in change in the 32 item Motor Function Measure (MFM-32) total score
Baseline to Week 48

Change in MFM-32 total score from baseline to Week 48. Scores range from 0-3 on each item. The scores from the 32 items are summed and transformed to a 0-100 scale, with higher scores reflecting higher levels of functional abilities.

Percent change in total body weight from Baseline to Week 24
Baseline to Week 24

Secondary Endpoints

Efficacy of taldefgrobep alfa compared to placebo in change in the Revised Upper Limb Module (RULM) score
Baseline to Week 48
Efficacy of taldefgrobep alfa compared to placebo in change in the Revised Hammersmith Scale (RHS)
Baseline to Week 48
Change from Baseline in lean body mass
Baseline, Week 48
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
taldefgrobep alfaEXPERIMENTALtaldefgrobep alfa - Double-blind (DB) Phase: Participants receive weight based 35 mg/50 mg weekly subcutaneous injection for 48-week DB phase. taldefgrobep alfa/taldefgrobep alfa - Extension Phase: Participants receive weight based 35 mg/50 mg weekly subcutaneous injection for Open label Extension (OLE) phase.
PlaceboPLACEBO_COMPARATORPlacebo - Double-blind (DB) Phase: Participants receive weight based 35 mg/50 mg weekly subcutaneous injection for 48-week DB phase. Placebo/taldefgrobep alfa - Extension Phase: Participants who receive placebo during DB phase, receive weight based 35 mg/50 mg weekly subcutaneous taldefgrobep alfa injection for OLE phase.
Taldefgrobep Alpha once weeklyEXPERIMENTAL -
Placebo once weeklyPLACEBO_COMPARATOR -
Taldefgrobep Alpha once every 4 weeksEXPERIMENTAL -
Placebo once every 4 weeksPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
taldefgrobep alfaDRUGDB Phase: 35 mg/50 mg weekly subcutaneous injection
PlaceboDRUGDB Phase: matching placebo 35 mg/50 mg weekly subcutaneous injection
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Eligibility Criteria

Age Range4 Years to 21 Years
SexALL
Healthy VolunteersNo
Study Sites53

Key Inclusion Criteria: * Spinal Muscular Atrophy confirmed by genetic diagnosis of 5q-autosomal recessive SMA as well as SMN2 copy number * Ambulant or Non-Ambulant * Treated with an SMA disease-modifying therapy and anticipated to remain on that same treatment regimen and dose throughout the tria...

Countries:United StatesBelgiumCzechiaGermanyItalyNetherlandsPolandSpainUnited Kingdom
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Competitive Landscape -Spinal Muscular Atrophy 33 trials

Frequently asked questions about Taldefgrobep Alfa

What is Taldefgrobep Alfa?

Taldefgrobep Alfa is an investigational small molecule developed by Biohaven Ltd. (ticker BHVN) that is being studied for obesity and overweight and for spinal muscular atrophy. It is in clinical development and has not been approved by the FDA. It is being tested in a Phase 2 obesity trial and a Phase 3 spinal muscular atrophy trial.

What does Taldefgrobep Alfa target?

Taldefgrobep Alfa targets myostatin. By binding myostatin, the drug is designed to modulate this signaling pathway, which is relevant to muscle mass regulation in both metabolic and neuromuscular conditions. Biohaven Ltd. is developing the small molecule across obesity and spinal muscular atrophy indications.

Who makes Taldefgrobep Alfa?

Taldefgrobep Alfa is developed by Biohaven Ltd., which trades under the ticker BHVN. Biohaven is running the clinical program for the drug in obesity and overweight and in spinal muscular atrophy, including a Phase 2 obesity study and a Phase 3 spinal muscular atrophy study.

What phase is Taldefgrobep Alfa in?

Taldefgrobep Alfa is in Phase 2 development for obesity and overweight and in Phase 3 development for spinal muscular atrophy. It is investigational and has not been approved by the FDA. The Phase 2 obesity trial is active but not recruiting, and the Phase 3 spinal muscular atrophy trial is also active but not recruiting.

What clinical trials is Taldefgrobep Alfa in?

Taldefgrobep Alfa is being studied in NCT07281495, a Phase 2 trial in adults with overweight and obesity enrolling 150 participants in the United States, and NCT05337553, a Phase 3 trial in participants with spinal muscular atrophy enrolling 269 participants across the United States, Belgium, Czechia, Germany, Italy, Netherlands, Poland, Spain, and the United Kingdom. Both are active but not recruiting.

Is Taldefgrobep Alfa the same as myostatin inhibitors?

Taldefgrobep Alfa is a small molecule that targets myostatin, placing it in the myostatin-targeting class of investigational therapies. It is being developed by Biohaven Ltd. (BHVN) for obesity and overweight and for spinal muscular atrophy, with one Phase 2 trial and one Phase 3 trial currently active but not recruiting.