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FB102

Phase 2

Celiac Disease | Monoclonal antibody | Gastrointestinal |Forte Biosciences, Inc.|Last Updated: Nov 20, 2025

Target and mechanism

Molecular targetCD122
Target classProtein
ModalityMonoclonal antibody

Also known as FB102 Single dose

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment100

FDA Designations

FAST_TRACK

Clinical trial landscape

FB102 · 3 trials · 3 indications

Phase 2 1Phase 1 2
NCT06982963Randomized, Double Blind, Placebo-controlled Phase 2 Study in Adults With Celiac DiseaseCeliac Disease
RECRUITING100 Analytics
PHASE2RECRUITING
Randomized, Double Blind, Placebo-controlled Phase 2 Study in Adults With Celiac Disease
Celiac DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline in the VCIEL
78 Days

Vh:Cd and IEL Composite Scale (VCIEL)

Incidence of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs)
Upto 36 Weeks post first dose administration
Change from Baseline of Severity of Alopecia Tool (SALT) score at Week 16.
From Screening through Week 16.

The Severity of Alopecia Tool (SALT) score ranges from 0 (no scalp hair loss) to 100 (complete scalp hair loss), with higher scores indicating greater severity. Change from baseline in SALT score at Week 16 will assess treatment effect. The AA-IGA categorizes SALT scores as follows: 0 = None (0%), 1 = Limited (1-20%), 2 = Moderate (21-49%), 3 = Severe (50-94%), 4 = Very Severe (95-100%).

Number of participants with treatment-emergent adverse events (TEAEs) and Serious Adverse events (SAE) following treatment with FB102
Upto 16 Weeks post first dose administration
Percent change from Baseline in central read facial-vitiligo area scoring index (F-VASI)
Upto 16 Weeks post first dose administration

The VASI Score is used to assess the severity and extent of Vitilgo. F-VASI is calculated using a formula that includes involvement of the face (possible range, 0-4), with percentage of vitiligo involvement estimated in finger units by the same investigator throughout the study

Number of participants with percent change from Baseline in central read facial-vitiligo area scoring index (F-VASI)
Upto 16 Weeks post first dose administration

The VASI Score is used to assess the severity and extent of Vitilgo. F-VASI is calculated using a formula that includes involvement of the face (possible range, 0-4), with percentage of vitiligo involvement estimated in finger units by the same investigator throughout the study

Secondary Endpoints

Proportion of participants achieving by percent change improvement in central read F-VASI from Baseline.
Upto 16 Weeks post first dose administration
To evaluate the efficacy of FB102 compared to placebo by percent change from Baseline in total-Vitiligo Area Scoring Index (T-VASI)
Upto 16 Weeks post first dose administration
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
AEXPERIMENTALFB102
BEXPERIMENTALFB102
CPLACEBO_COMPARATORPlacebo
FB102ACTIVE_COMPARATORParticipants will receive FB102.
PlaceboPLACEBO_COMPARATORMatching placebo

Interventions

NameTypeDescription
FB102BIOLOGICALFB102 (10 mg/kg induction doses and 3 mg/kg or 5 mg/kg maintenance doses) or placebo arms in a 2:2:1 ratio.
PlaceboOTHERPlacebo
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Men and women aged 18 to 70 years at Screening. 2. Has documented diagnosis of CeD confirmed by intestinal biopsy and positive celiac serology at least 12 months prior to Screening (intestinal biopsy and serology do not have to be performed concurrently). 3. Body mass index (...

Countries:AustraliaNew Zealand
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Frequently asked questions about FB102

What is FB102 used for?

FB102 is an investigational small molecule being developed for alopecia areata, vitiligo, and celiac disease. It is also being studied in healthy volunteers to assess safety and effects. The drug is in Phase 1 clinical development for these conditions.

What does FB102 target?

FB102 targets CD122, a protein that is part of the interleukin-2 receptor. By binding to CD122, the drug is designed to modulate immune responses involved in autoimmune and inflammatory conditions such as alopecia areata, vitiligo, and celiac disease.

Who makes FB102?

FB102 is being developed by Forte Biosciences, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol FBRX. The company is conducting clinical trials to evaluate the drug's safety and efficacy in multiple indications.

What phase is FB102 in?

FB102 is in Phase 1 clinical development. It is being studied in early-stage trials for alopecia areata, vitiligo, and celiac disease, as well as in healthy volunteers. The drug has received Fast Track designation from the FDA, but it is not yet approved.

What clinical trials is FB102 in?

FB102 is being evaluated in several recruiting trials: NCT06905873 for non-segmental vitiligo, NCT06982963 for celiac disease, NCT07205159 for alopecia areata, and NCT07623057 in healthy volunteers. These trials are enrolling adults aged 18 and older in Australia and New Zealand.

Is FB102 the same as FB102 Single dose?

Yes, FB102 is also known as FB102 Single dose. This alternative name refers to the same investigational drug being developed by Forte Biosciences for the treatment of autoimmune and inflammatory conditions.