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GZ21T

Phase 1

Actinic Keratosis | Small molecule | Dermatology |BrainsWay Ltd.|Last Updated: Jan 28, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials1
Total Enrollment41

FDA Designations

No designations recorded

Clinical trial landscape

GZ21T · 1 trial · 1 indication

Phase 1 1
NCT06888362Trial to Investigate GZ21T in Healthy VolunteersActinic Keratosis
COMPLETED41 Analytics
PHASE1COMPLETED
Trial to Investigate GZ21T in Healthy Volunteers
Actinic KeratosisUnlock trial analytics

Study Endpoints

Primary Endpoints

AE
Day 1 to Day 7

Number of reported adverse events (AEs).

Number of Reported Skin Reactions
Day 1 to Day 7.

Local tolerability reactions, such as Erythema, swelling, pruritus, burning, blistering and urticaria, discolouration and dryness (Investigator's assessment 0-3 none/mild/moderate/severe).

Number of Participants With Clinically Significant Changes in Vital Signs
Day 1 to Day 7.

Number of participants in Part A with clinically significant changes from baseline in vital signs (systolic, diastolic blood pressure and pulse)

Number of Participants With Clinically Significant Changes in Electrocardiograms (ECGs)
Day 1 to Day 7.

Number of participants in Part A with clinically significant changes from baseline in ECG results (resting heart rate, PQ/PR, QRS, QT and QTcF).

Number of Participants With Clinically Significant Abnormal Laboratory Test Results (Haematology, Clinical Chemistry, Coagulation)
Day 1 to Day 7.

Number of participants in Part A with clinically significant abnormal laboratory tests results (clinical chemistry, hematology and coagulation parameters).

Number of Participants With Clinically Significant Changes in Physical Examination Findings.
Day 1 to Day 7.

Number of participants in Part A with clinically significant changes from baseline in physical examination findings.

Amount of Cream Absorbed After Single Dose Applications.
0-2 hours after IMP administration

Cream absorption measured on a 4-point scale: "1= not absorbed"; "2= somewhat absorbed"; "3= mostly absorbed"; "4= completely absorbed". This outcome was prespecified to be assessed only for Part B.

Secondary Endpoints

Plasma Concentrations
Day 1 to Day 7.
PK Parameters- AUCinf
Day 1 to Day 7.
PK Parameters - AUClast
Day 1 to Day 7.
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part A, Cohort 1EXPERIMENTAL25.5 mg/cm2 GZ21T or placebo will be applied to 900 cm2 of the skin, corresponding to approximately 5% body surface area (BSA) and 23 g cream.
Part A, Cohort 2EXPERIMENTAL25.5 mg/cm2 GZ21T or placebo will be applied to 1350 cm2 of the skin, corresponding to approximately 7.5% BSA and 35 g cream.
Part A, Cohort 3EXPERIMENTAL25.5 mg/cm2 GZ21T or placebo will be applied to 1800 cm2 of the skin, corresponding to approximately 10% BSA and 46 g cream.
Part A, Cohort 4:EXPERIMENTAL25.5 mg/cm2 GZ21T or placebo will be applied to the face, corresponding to approximately 3-3.5% BSA (540 - 630% cm2) and 16 g cream.
Part B, Cohort 1EXPERIMENTAL13 mg/cm2 GZ21T will be applied to 900 cm2 of the skin, corresponding to approximately 5% BSA and 11.7 g cream
Part B, Cohort 2EXPERIMENTALA single dose of GZ21T decided based on the results from preceding cohorts will be applied to 900 cm2 of the skin, corresponding to approximately 5% BSA
Part B, Cohort 3EXPERIMENTALA single dose of GZ21T decided based on the results from preceding cohorts will be applied to 900 cm2 of the skin, corresponding to approximately 5% BSA

Interventions

NameTypeDescription
GZ21TDRUGGZ21T cream is intended to be studied as a potential treatment for patients with actinic keratoses and other dermatologic conditions which may be amendable to the study treatment.
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Willing and able to give written informed consent for participation in the trial. 2. Healthy male or female participant aged 18 to 70 years, inclusive. 3. Body Mass Index (BMI) ≥ 18.5 and ≤ 30.0 kg/m2 at the time of the screening visit. 4. WOCBP must practice abstinence from ...

Countries:Sweden
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