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Tralesinidase alfa

Phase 3

MPS IIIB | Small molecule | Other |Spruce Biosciences, Inc.|Last Updated: Jul 30, 2026

Target and mechanism

ModalitySmall molecule

Also known as Tralesinidase alfa (TA)

Success Probability

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Market & Valuation

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Trial Design

RandomizedNO_TREATMENT_CONTROLLED
Total Trials1
Total Enrollment14

FDA Designations

No designations recorded

Clinical trial landscape

Tralesinidase alfa · 1 trial · 1 indication

Phase 3 1
NCT07579910Intracerebroventricular Tralesinidase Alfa in Participants With MPS IIIB (Sanfilippo Syndrome Type B)MPS IIIB
NOT YET_RECRUITING14 Analytics
PHASE3NOT YET_RECRUITING
Intracerebroventricular Tralesinidase Alfa in Participants With MPS IIIB (Sanfilippo Syndrome Type B)
MPS IIIBUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from Baseline in Bayley Scales of Infant and Toddler Development, Third Edition, Cognition Domain (BSID-III-C) Raw Score
Baseline to Week 260 (approximately 5 years)

The BSID-III-C is a standardized tool that evaluates cognitive development in young children, capturing skills such as processing speed, problem solving, and play. Raw scores are used to sensitively measure individual change over time, independent of age. Assessments are administered by a trained, blinded rater and reviewed by a central blinded rater. The endpoint is the difference in mean change from baseline in BSID-III-C raw score between the tralesinidase alfa and control arms at Week 260

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Study Design & Arms

AllocationRANDOMIZED
MaskingSINGLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Tralesinidase alfa (TA)EXPERIMENTAL -
ControlNO_INTERVENTION -

Interventions

NameTypeDescription
Tralesinidase alfa (TA)DRUGTA study drug is a sterile solution for ICV infusion.
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Eligibility Criteria

Age Range1 Year to 5 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: Has a diagnosis of MPS IIIB confirmed by deficient NAGLU enzyme activity during screening. Has nonattenuated severe MPS IIIB by the Genotype and Clinical Assessment Committee. Is ≥1 and ≤5 years of age with BSID-III-C raw score of \<70. Is male or female as identified at birth...

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Recent Changes (Last 90 Days)

LOWJul 30, 2026NCT07579910lastUpdatePostDate: changed
LOWJul 30, 2026NCT07579910lastUpdatePostDate: changed

Frequently asked questions about Tralesinidase alfa

What is Tralesinidase alfa used for?

Tralesinidase alfa is an investigational drug being developed for the treatment of MPS IIIB, also known as Sanfilippo syndrome type B. It is currently in Phase 3 clinical development and has not yet been approved by regulatory authorities.

Who makes Tralesinidase alfa?

Tralesinidase alfa is being developed by Spruce Biosciences, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol SPRB. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with MPS IIIB.

What phase is Tralesinidase alfa in?

Tralesinidase alfa is currently in Phase 3 clinical development. It is an investigational drug and has not received regulatory approval. The ongoing Phase 3 trial is designed to assess the treatment's effects in participants with MPS IIIB.

What clinical trials is Tralesinidase alfa in?

Tralesinidase alfa is being studied in a Phase 3 clinical trial with the identifier NCT07579910, titled 'Intracerebroventricular Tralesinidase Alfa in Participants With MPS IIIB (Sanfilippo Syndrome Type B).' The trial is not yet recruiting and plans to enroll 14 participants.

Is Tralesinidase alfa the same as Tralesinidase alfa (TA)?

Yes, Tralesinidase alfa is also known as Tralesinidase alfa (TA). Both names refer to the same investigational drug being developed by Spruce Biosciences for the treatment of MPS IIIB.