Recent Updates
Recently added Catalysts

ST-920

Phase 1

Fabry Disease | Monoclonal antibody | Rare Disease |Sangamo Therapeutics, Inc.|Last Updated: Apr 14, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment36

FDA Designations

No designations recorded

Clinical trial landscape

ST-920 · 1 trial · 1 indication

Phase 1 1
NCT04046224Dose-Ranging Study of ST-920, an AAV2/6 Human Alpha Galactosidase A Gene Therapy in Subjects With Fabry Disease (STAAR)Fabry Disease
COMPLETED36 Analytics
PHASE1COMPLETED
Dose-Ranging Study of ST-920, an AAV2/6 Human Alpha Galactosidase A Gene Therapy in Subjects With Fabry Disease (STAAR)
Fabry DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Treatment-emergent Adverse Events (TEAEs) - All
Up to 12 months after the ST-920 infusion

All incidences of Treatment-Emergent Adverse Events (TEAEs) in subjects who receive ST-920 as assessed by Common Terminology Criteria for Adverse Events (CTCAE)

Incidence of Treatment-emergent Adverse Events (TEAEs) - Related to ST-920
Up to 12 months post ST-920 infusion

Incidences of Treatment-Emergent Adverse Events (TEAEs) directly related to ST-920 in subjects who receive ST-920 as assessed by Common Terminology Criteria for Adverse Events (CTCAE)

Incidence of Treatment-emergent Adverse Events (TEAEs) - Serious
Up to 12 month post ST-920 infusion

All incidences of serious Treatment-Emergent Adverse Events (TEAEs) in subjects who receive ST-920 as assessed by Common Terminology Criteria for Adverse Events (CTCAE)

Incidence of Treatment-emergent Adverse Events (TEAEs) - Any TEAEs Leading to Study Discontinuation or Withdrawal
Up to 12 month post ST-920 infusion

All incidences of Treatment-Emergent Adverse Events (TEAEs) that lead to study discontinuation or withdrawal in subjects who receive ST-920 as assessed by Common Terminology Criteria for Adverse Events (CTCAE)

Secondary Endpoints

To Assess Alpha Gal-A Activity in Plasma Over Time
up to 12 months post ST-920 infusion
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Sequential dose escalationEXPERIMENTALST-920 is administered as a single infusion: 1. Cohort 1: 0.5e13 vg/kg 2. Cohort 2: 1.0e13 vg/kg 3. Cohort 3: 3.0e13 vg/kg 4. Cohort 4: 5.0e13 vg/kg
Expansion CohortsEXPERIMENTAL1. Anti Alpha-Gal A Antibody Positive Cohort 2. Anti Alpha-Gal A Antibody Negative Cohort 3. Female Cohort 4. Renal Cohort 5. Cardiac Cohort

Interventions

NameTypeDescription
ST-920BIOLOGICALSingle dose of investigational product ST-920
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites18

Inclusion Criteria: * ≥ 18 years of age * Documented diagnosis of Fabry disease * One or more of the following symptoms: i) cornea verticillata, ii) acroparesthesia, iii) anhidrosis, iv) angiokeratoma * Subject must be fully vaccinated (as per the Centers for Disease Control and Prevention (CDC) de...

Countries:United StatesAustraliaCanadaGermanyItalyTaiwanUnited Kingdom
Unlock Eligibility Criteria

Frequently asked questions about ST-920

What is ST-920 used for?

ST-920 is an investigational gene therapy being studied for the treatment of Fabry Disease, a rare genetic disorder. It is designed to deliver a functional copy of the alpha-galactosidase A gene to patients. ST-920 is currently in clinical development and has not been approved by regulatory authorities.

Who makes ST-920?

ST-920 is being developed by Sangamo Therapeutics, Inc., a biotechnology company traded on the Nasdaq under the ticker symbol SGMO. The company is conducting clinical trials to evaluate the safety and efficacy of ST-920 in patients with Fabry Disease.

What phase is ST-920 in?

ST-920 is in Phase 1 clinical development. It has completed a Phase 1 dose-ranging study in subjects with Fabry Disease. As an investigational therapy, ST-920 is not yet approved and remains under evaluation in clinical trials.

What clinical trials is ST-920 in?

ST-920 has been studied in one clinical trial, identified as NCT04046224, titled "Dose-Ranging Study of ST-920, an AAV2/6 Human Alpha Galactosidase A Gene Therapy in Subjects With Fabry Disease (STAAR)." This Phase 1 trial has been completed and enrolled 36 participants across multiple countries.

Is ST-920 the same as a gene therapy for Fabry disease?

ST-920 is a gene therapy designed to treat Fabry Disease. It uses an AAV2/6 vector to deliver the human alpha-galactosidase A gene. The completed Phase 1 trial, STAAR, evaluated dose-ranging of ST-920 in patients with Fabry Disease.