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SZN-8141

Phase 1

Diabetic Macular Edema (DME) | Monoclonal antibody | Ophthalmology |Surrozen, Inc.|Trials Updated: Sep 14, 2026

SZN-8141 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Sep 2026

SZN-8141 target and mechanism

Molecular targetFzd4
Target classFrizzled Receptor
ModalityMonoclonal antibody

Also known as SZN-8141 for Injection

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment9

FDA Designations

No designations recorded

SZN-8141 clinical trials

SZN-8141 · 1 trial · 1 indication

Phase 1 1
NCT07817121A First-in-human Trial of SZN-8141 in Diabetic Macular EdemaDiabetic Macular Edema (DME)
NOT YET_RECRUITING9 Analytics
PHASE1NOT YET_RECRUITING
A First-in-human Trial of SZN-8141 in Diabetic Macular Edema
Diabetic Macular Edema (DME)Unlock trial analytics

Study Endpoints

Primary Endpoints

Incidence and severity of treatment-emergent adverse events
Up to 12 weeks

Secondary Endpoints

Change in Best Corrected Visual Acuity from Baseline
Up to 12 weeks
Changes in Central Subfield Thickness from Baseline
Up to 12 weeks
Systemic Drug concentrations of SZN-8141
Up to 12 weeks
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingSINGLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
SZN-8141 Single Ascending Dose Level 1EXPERIMENTALParticipants will receive a single dose of SZN-8141 for Injection
SZN-8141 Single Ascending Dose Level 2EXPERIMENTALParticipants will receive a single dose of SZN-8141 for Injection
SZN-8141 Single Ascending Dose Level 3EXPERIMENTALParticipants will receive a single dose of SZN-8141 for Injection

Interventions

NameTypeDescription
SZN-8141 for InjectionBIOLOGICALSZN-8141 for Injection is a humanized antibody formulated for IVT administration
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Eligibility Criteria

Age Range18 Years to 90 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Be willing and able to understand the study procedures and the risks involved and provide written informed consent before the first study-related activity * Age ≥18 years and ≤90 years old * Documented diagnosis of diabetes mellitus (type 1 or 2), as defined by the American Di...

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Recent Changes (Last 90 Days)

LOWSep 15, 2026NCT07817121NEW_TRIAL: changed
LOWSep 15, 2026NCT07817121NEW_TRIAL: changed
LOWSep 15, 2026NCT07817121NEW_TRIAL: changed

Frequently asked questions about SZN-8141

What is SZN-8141?

SZN-8141 is an investigational monoclonal antibody developed by Surrozen, Inc. for the treatment of diabetic macular edema (DME). It is designed to target the Frizzled receptor Fzd4. SZN-8141 is in Phase 1 clinical development and is not yet approved for any indication.

What is SZN-8141 used for in diabetic macular edema?

SZN-8141 is being developed for the treatment of diabetic macular edema (DME), a complication of diabetes that causes fluid accumulation in the retina. It is an investigational therapy and has not been approved for any use. Its safety and efficacy are being evaluated in a first-in-human clinical trial.

What does SZN-8141 target?

SZN-8141 targets Fzd4, a Frizzled receptor. By binding to Fzd4, the monoclonal antibody is designed to modulate Wnt signaling, a pathway involved in vascular stability and barrier function in the eye. This mechanism is being explored for its potential to treat diabetic macular edema.

Who is developing SZN-8141?

SZN-8141 is being developed by Surrozen, Inc., a biotechnology company traded on the Nasdaq under the ticker symbol SRZN. Surrozen is focused on discovering and developing targeted therapeutics that modulate Wnt signaling pathways.

What phase is SZN-8141 in?

SZN-8141 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency. The ongoing Phase 1 trial is a first-in-human study evaluating the drug in patients with diabetic macular edema.

What clinical trials is SZN-8141 in?

SZN-8141 is being evaluated in a single Phase 1 clinical trial, NCT07817121, titled "A First-in-human Trial of SZN-8141 in Diabetic Macular Edema." The trial has a planned enrollment of 9 participants and is currently not yet recruiting. It is a controlled study.

Is SZN-8141 the same as SZN-8141 for Injection?

Yes, SZN-8141 for Injection is an alternative name for SZN-8141. Both refer to the same investigational monoclonal antibody developed by Surrozen, Inc. for diabetic macular edema. The formulation is intended for injection.