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taldefgrobep alfa

Phase 3

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

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment269

FDA Designations

ORPHAN_DRUGFAST_TRACK

Clinical trial landscape

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 27 trials

Frequently asked questions about taldefgrobep alfa

What is Taldefgrobep Alfa used for?

Taldefgrobep Alfa is an investigational drug being studied for the treatment of Spinal Muscular Atrophy (SMA) and Obesity. It is currently in clinical development for these conditions, with trials evaluating its efficacy and safety in patients with SMA and in adults with overweight and obesity.

Who makes Taldefgrobep Alfa?

Taldefgrobep Alfa is being developed by Biohaven Ltd., a biopharmaceutical company traded under the ticker symbol BHVN. The company is conducting clinical trials to evaluate the drug's safety and efficacy for Spinal Muscular Atrophy and Obesity.

What phase is Taldefgrobep Alfa in?

Taldefgrobep Alfa is in Phase 2 and Phase 3 clinical trials. A Phase 3 study is evaluating the drug in participants with Spinal Muscular Atrophy, while a Phase 2 study is assessing it in adults with overweight and obesity. The drug is investigational and not yet approved.

What clinical trials is Taldefgrobep Alfa in?

Taldefgrobep Alfa is being studied in two clinical trials. NCT05337553 is a Phase 3, placebo-controlled study in 269 participants with Spinal Muscular Atrophy across multiple countries. NCT07281495 is a Phase 2, placebo-controlled study in 150 adults with overweight and obesity in the United States.

Is Taldefgrobep Alfa FDA approved?

Taldefgrobep Alfa is not FDA approved. It is an investigational drug currently in clinical development. It has received Orphan Drug and Fast Track designations from the FDA, which are intended to expedite the development and review of drugs for serious conditions.