A Study to Evaluate Topical ATR04-484 for EGFRi-Associated Dermal Toxicity

NCT ID: NCT06830863

Last Updated: 2025-10-02

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

32 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-08-25

Study Completion Date

2026-05-15

Brief Summary

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The goal of this randomized clinical trial is to learn if topical treatment with ATR04-484 can treat skin rash in patients undergoing EGFR inhibitor (EGFRi) therapy. The primary goal of the study is to determine safety and tolerability of ATR04-484, and the secondary goal of the study is to assess efficacy signals of ATR04-484. Researchers will compare treatment of ATR04-484 to its vehicle. Participants will:

* Apply ATR04-484 or vehicle daily for 28 days
* Visit the clinic periodically for evaluation and sample collection

Detailed Description

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This is a multicenter, randomized, blinded, vehicle-controlled Phase 1/2 trial of topically applied ATR04-484 in adult patients with moderate to severe EGFRi-related non-infected dermal toxicity affecting the face. The neck, chest, back, and other areas may also be affected.

The safety, bioavailability, pharmacodynamics (PD), and preliminary effect of ATR04-484 (at a single concentration) will be compared to that of its vehicle, in 2 patient cohorts. In each cohort, eligible patients will be randomized (3:1 ratio) to ATR04-484 or its vehicle. The initial cohort (n = 8) will receive a single 4 g application of the study drug to the face, chest, and back, followed by a 7-day observation period. Upon completion of this observation period, the patients in this cohort may continue in the study with daily applications of study drug for an additional 28 days. Following a safety observation period, a subsequent cohort (n = 24) may be enrolled and will receive a 4 g application of the study drug once daily for 28 days. Each cohort will be followed for 28 days after the last application of study drug.

Clinical assessments of treatment effect will be evaluated at each area that has received a full application of study drug (coverage of all lesional surfaces). The primary endpoint is safety and tolerability. Secondary endpoints including clinical efficacy, including: (1) the severity of the dermal toxicity using a 5-point regional assessment scale, based on modified CTCAE descriptors for skin toxicity (including a score of 0 for clear or unaffected skin through 4 for severely affected skin); (2) numeric rating scales for pruritus and pain; and (3) a quality-of-life assessment (Functional Assessment of Cancer Therapy-EGFRI 18 \[FACT-EGFRI 18\]). Bioavailability of ATR04-484 will also be assessed.

Conditions

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EGFR Inhibitor-associated Rash

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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ATR04-484

Topically applied ATR04-484

Group Type EXPERIMENTAL

ATR04-484

Intervention Type DRUG

ATR04-484 is a recombinant live biotherapeutic product (rLBP) containing the engineered S. epidermidis strain SE484 in an ointment formulation for topical use

Vehicle

Topically applied vehicle

Group Type PLACEBO_COMPARATOR

Vehicle

Intervention Type DRUG

Topically applied vehicle.

Interventions

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ATR04-484

ATR04-484 is a recombinant live biotherapeutic product (rLBP) containing the engineered S. epidermidis strain SE484 in an ointment formulation for topical use

Intervention Type DRUG

Vehicle

Topically applied vehicle.

Intervention Type DRUG

Other Intervention Names

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ATR-04

Eligibility Criteria

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Inclusion Criteria

* Adults ≥18 years of age
* Has Grade 2 or 3 non-infected moderate to severe EGFRi-related dermal toxicity affecting the face (the neck, chest, back and other areas may also be affected)

Exclusion Criteria

* Significant skin disease other than EGFRi-related dermal toxicity
* Treatment with topical mid- to high-potency topical corticosteroids, or topical antibiotics or antibacterial washes on the face, neck, chest, or back within 14 days prior to baseline; treatment with systemic antibiotics or systemic corticosteroids within 14 days prior to baseline
* Residing with an immunocompromised person residing with them in the same dwelling from the baseline visit through 2 weeks after the treatment period
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Prosoft Clinical

OTHER

Sponsor Role collaborator

Azitra Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Yale University School of Medicine

New Haven, Connecticut, United States

Site Status RECRUITING

NYU Langone

New York, New York, United States

Site Status RECRUITING

The Ohio State University

Gahanna, Ohio, United States

Site Status RECRUITING

Inova Schar Cancer

Fairfax, Virginia, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Mary Spellman, MD

Role: CONTACT

415-652-7962

Facility Contacts

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Devon, Clinical Research Coordinator

Role: primary

203-785-2270

Sevinj, Sr. Clinical Research Coordinator

Role: primary

212-263-5244

Elizabeth, Clinical Research Coordinator

Role: primary

614-293-9306

Stephanie, Senior Director, Clinical Trials Office

Role: primary

571-472-4724

Other Identifiers

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ATR04-EGFR-101

Identifier Type: -

Identifier Source: org_study_id

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