A Study Evaluating AB248 Alone or in Combination With Pembrolizumab in Adult Patients With Solid Tumors

NCT ID: NCT05653882

Last Updated: 2025-09-10

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

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1

Total Enrollment

552 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-01-04

Study Completion Date

2027-05-31

Brief Summary

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This is a phase I, First-in-Human (FIH), open-label study to evaluate the safety, tolerability, pharmacokinetic (PK) profile, and preliminary efficacy of AB248 as monotherapy OR in combination with pembrolizumab in adult participants with locally advanced or metastatic solid tumors. The study will consist of a dose escalation and a dose expansion stage.

Detailed Description

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Conditions

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Solid Tumor Non Small Cell Lung Cancer Melanoma Squamous Cell Carcinoma of Head and Neck Renal Cell Carcinoma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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etakafusp alfa (AB248) Monotherapy Dose-Escalation

etakafusp alfa (AB248) will be administered intravenously as a single agent

Group Type EXPERIMENTAL

etakafusp alfa (AB248)

Intervention Type BIOLOGICAL

Intravenous infusion of etakafusp alfa (AB248): CD8+ T cell selective interleukin-2 investigational drug

etakafusp alfa (AB248) + pembrolizumab Combination Dose-Escalation

etakafusp alfa (AB248) and pembrolizumab will be administered intravenously

Group Type EXPERIMENTAL

etakafusp alfa (AB248)

Intervention Type BIOLOGICAL

Intravenous infusion of etakafusp alfa (AB248): CD8+ T cell selective interleukin-2 investigational drug

pembrolizumab

Intervention Type BIOLOGICAL

Intravenous infusion of pembrolizumab

etakafusp alfa (AB248) Monotherapy Indication Expansion

etakafusp alfa (AB248) will be administered intravenously as a single agent in disease specific cohorts

Group Type EXPERIMENTAL

etakafusp alfa (AB248)

Intervention Type BIOLOGICAL

Intravenous infusion of etakafusp alfa (AB248): CD8+ T cell selective interleukin-2 investigational drug

etakafusp alfa (AB248) + pembrolizumab Combination Indication Expansion

etakafusp alfa (AB248) and pembrolizumab will be administered intravenously in disease specific cohorts

Group Type EXPERIMENTAL

etakafusp alfa (AB248)

Intervention Type BIOLOGICAL

Intravenous infusion of etakafusp alfa (AB248): CD8+ T cell selective interleukin-2 investigational drug

pembrolizumab

Intervention Type BIOLOGICAL

Intravenous infusion of pembrolizumab

Interventions

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etakafusp alfa (AB248)

Intravenous infusion of etakafusp alfa (AB248): CD8+ T cell selective interleukin-2 investigational drug

Intervention Type BIOLOGICAL

pembrolizumab

Intravenous infusion of pembrolizumab

Intervention Type BIOLOGICAL

Other Intervention Names

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KEYTRUDA®

Eligibility Criteria

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Inclusion Criteria

* Age ≥18 years of age at the time consent is signed.
* Has adequate end organ function per laboratory testing.
* Pregnancy prevention requirements
* Has measurable disease per RECIST 1.1 as assessed by the local site Investigator/radiology.
* Has a performance status of 0 or 1 on Eastern Cooperative Oncology Group scale.
* Histologic documentation of incurable, locally advanced or metastatic tumor of the type being evaluated in individual cohorts

Exclusion Criteria

* Has a diagnosis of immunodeficiency.
* Has a history of a previous, additional malignancy, unless potentially curative treatment has been completed, with no evidence of malignancy for 5 years.
* Has known active CNS metastases and/or carcinomatous meningitis.
* Has an active autoimmune disease that has required systemic treatment in the past 2 years.
* Has an active infection requiring systemic therapy.
* Inability to comply with study and follow-up procedures.
* Has had a severe hypersensitivity reaction (Grade ≥3) to treatment with pembrolizumab, another monoclonal antibody, or has history of any hypersensitivity to any components of the study treatments or any of their excipients.
* Has received prior systemic anticancer therapy including investigational agents within 4 weeks (or, if shorter, within 5 half-lives for kinase inhibitors) prior to first dose of study treatment.
* Has received prior radiotherapy within 2 weeks of start of study treatment or has had a history of radiation pneumonitis.
* Receiving chronic systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior the first dose of study treatment.
* Has received previous treatment with another agent targeting the IL-2, IL-7, or IL-15 receptors.
* Is expected to require any other form of antineoplastic therapy while on study
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role collaborator

Asher Biotherapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Monitor

Role: STUDY_DIRECTOR

Asher Biotherapeutics, Inc.

Locations

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City of Hope

Duarte, California, United States

Site Status

UCLA

Los Angeles, California, United States

Site Status

UCSD

San Diego, California, United States

Site Status

UCSF

San Francisco, California, United States

Site Status

Yale

New Haven, Connecticut, United States

Site Status

University of Miami

Miami, Florida, United States

Site Status

Ocala Oncology Center

Ocala, Florida, United States

Site Status

University of Chicago Medical Center

Chicago, Illinois, United States

Site Status

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

Dana Farber Cancer Institute

Boston, Massachusetts, United States

Site Status

Karmanos Cancer Institute

Detroit, Michigan, United States

Site Status

Washington University

St Louis, Missouri, United States

Site Status

Rutgers

New Brunswick, New Jersey, United States

Site Status

NYU

New York, New York, United States

Site Status

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Site Status

UNC Lineberger Comprehensive Cancer Center

Chapel Hill, North Carolina, United States

Site Status

Providence Cancer Institute Franz Clinic

Portland, Oregon, United States

Site Status

Sarah Cannon Research Institute

Nashville, Tennessee, United States

Site Status

Intermountain Health

Murray, Utah, United States

Site Status

Virginia Commonwealth

Richmond, Virginia, United States

Site Status

Countries

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United States

Other Identifiers

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KEYNOTE-E29

Identifier Type: OTHER

Identifier Source: secondary_id

MK-3475-E29

Identifier Type: OTHER

Identifier Source: secondary_id

AB248-101

Identifier Type: -

Identifier Source: org_study_id

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