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An Active Comparator Safety Study Evaluating the Combination of APG777 + APG990 in Moderate-to-Severe Atopic Dermatitis

A Phase 1b, Open-label, Randomized, Multicenter, Active Comparator Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of the Combination of APG777 + APG990 in Adults With Moderate-to-Severe Atopic Dermatitis

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07027527
Enrollment
86
Registered
2025-06-18
Start date
2025-06-04
Completion date
2027-12-01
Last updated
2026-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atopic Dermatitis

Keywords

Atopic Dermatitis, Moderate-to-Severe AD, APG777, Dupilumab, APG990

Brief summary

The primary purpose of this study is to evaluate the safety, tolerability, and pharmacokinetic (PK) parameters of the combination of APG777 + APG990 in adults with moderate-to-severe atopic dermatitis (AD), in comparison to dupilumab. The duration of the study will be approximately 82 weeks for each participant and will consist of a Screening Period (up to 6 weeks), Treatment Period (Baseline-Week 24), and Follow-up Period (Week 28-Week 76).

Detailed description

Participants will be randomized to APG777 + APG990 or dupilumab in a 1:1 ratio. Randomization will be stratified on Day 1 according to Baseline disease severity and geographic region.

Interventions

DRUGAPG777

Subcutaneous (SC) injection

DRUGAPG990

SC injection

DRUGDupilumab

SC injection

Sponsors

Apogee Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Have a diagnosis of AD that has been present for ≥ 1 year prior to the Screening visit and as determined by the Investigator through participant interview and/or review of the medical history. * Moderate-to-severe AD at Screening and Baseline (Day 1) visits, defined as: a) Eczema Area and Severity Index (EASI) score of ≥ 16, b) vIGA-AD score of ≥ 3, and c) AD affecting ≥10% of body surface area (BSA). * History of inadequate response to treatment with topical medications * Women of childbearing potential must have a negative serum pregnancy test at Screening and a negative urine pregnancy test at Baseline (Day 1) visit.

Exclusion criteria

* Participation in a prior study with APG777 or APG990. * Prior treatment with protocol-specified monoclonal antibodies (mAbs). * Has used any AD-related topical medications within 7 days prior to Baseline visit. * Has used systemic treatments (other than biologics) and/or phototherapies and/or laser therapy that could affect AD within 4 weeks prior to Baseline visit * History of known hypersensitivity to any of the ingredients in APG777, APG990, or dupilumab. * Presence of dermatologic conditions and/or comorbidities that might confound the diagnosis of AD and/or might interfere with study assessments Note: Additional protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Number of Participants with Treatment Emergent Adverse Events (TEAEs)Up to 24 weeks

Secondary

MeasureTime frameDescription
Maximum Serum Concentrations (Cmax) of APG990Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software.
Time to Reach Cmax (tmax) of APG777Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software. If the maximum value occurs at more than one time point, tmax is defined as the first time point with this value.
Maximum Serum Concentrations (Cmax) of APG777Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software
Predose Serum Concentrations (Ctrough) of APG777Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software.
Predose Serum Concentrations (Ctrough) of APG990Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software.
Time to Reach Cmax (tmax) of APG990Baseline, Week 1, 2, 4, 8, 12, 16, 20, 24PK parameters will be performed using a non-compartmental approach with a validated PK software. If the maximum value occurs at more than one time point, tmax is defined as the first time point with this value.

Countries

Australia, Canada, New Zealand

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026