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KB803

Phase 3

Dystrophic Epidermolysis Bullosa | Monoclonal antibody | Rare Disease |Krystal Biotech, Inc.|Last Updated: Mar 12, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment16

FDA Designations

No designations recorded

Clinical trial landscape

KB803 · 1 trial · 4 indications

Phase 3 1
NCT07016750A Study Comparing KB803 and Matched Placebo in Patients With Dystrophic Epidermolysis BullosaDystrophic Epidermolysis Bullosa
RECRUITING16 Analytics
PHASE3RECRUITING
A Study Comparing KB803 and Matched Placebo in Patients With Dystrophic Epidermolysis Bullosa
Dystrophic Epidermolysis BullosaUnlock trial analytics

Study Endpoints

Primary Endpoints

To evaluate the safety and tolerability of KB803.
24 weeks

Number of subjects with treatment related adverse events as assessed by CTCAE v5.

To evaluate the effect of ophthalmic KB803 on frequency of corneal abrasion symptoms.
24 weeks

Average number of days per month with corneal abrasion symptoms.

Secondary Endpoints

To evaluate the effect of ophthalmic KB803 on eye pain.
24 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
KB803EXPERIMENTALKB803
PlaceboPLACEBO_COMPARATORVehicle

Interventions

NameTypeDescription
KB803BIOLOGICALOphthalmic suspension of replication-defective, non-integrating herpes simplex virus (HSV-1) expressing the human collagen VII protein
PlaceboDRUGVehicle
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Eligibility Criteria

Age Range6 Months to N/A
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: 1. The subject and/or their parent/legal guardian must provide informed consent/assent and must be able to and willing to follow study procedures and instructions. 2. Age 6 months or older at time of informed consent/assent. 3. Confirmed diagnosis of DEB with a mutation in the C...

Countries:United States
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Frequently asked questions about KB803

What is KB803 used for?

KB803 is an investigational monoclonal antibody being developed for the treatment of Dystrophic Epidermolysis Bullosa (DEB), a rare genetic skin disorder. It is currently being studied in patients with recessive and dominant forms of the disease, including children as young as 6 months old.

Who makes KB803?

KB803 is being developed by Krystal Biotech, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol KRYS. The company is conducting a Phase 3 clinical trial of KB803 in the United States.

What phase is KB803 in?

KB803 is currently in Phase 3 clinical development. It is being evaluated in a randomized, double-blind, placebo-controlled study (NCT07016750) that is actively recruiting patients with Dystrophic Epidermolysis Bullosa. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is KB803 in?

KB803 is being studied in a single Phase 3 clinical trial with the identifier NCT07016750. This trial is titled "A Study Comparing KB803 and Matched Placebo in Patients With Dystrophic Epidermolysis Bullosa" and is currently recruiting participants in the United States.

How does KB803 work?

KB803 is a monoclonal antibody, a type of drug designed to bind to a specific protein in the body. However, the exact molecular target of KB803 has not been disclosed in available information. Its mechanism of action in treating Dystrophic Epidermolysis Bullosa is therefore not publicly detailed.