A Study of Evorpacept (ALX148) With Azacitidine for Higher Risk Myelodysplastic Syndrome (ASPEN-02)

NCT ID: NCT04417517

Last Updated: 2025-07-20

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

TERMINATED

Clinical Phase

PHASE1

Total Enrollment

65 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-10-02

Study Completion Date

2025-06-10

Brief Summary

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This Phase 1/2 clinical study will evaluate evorpacept (ALX148) in combination with azacitidine for the treatment of patients with higher risk myelodysplastic syndrome (MDS).

Detailed Description

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The Phase 1 will consist of a dose escalation of evorpacept (ALX148) in combination with azacitidine to evaluate safety and tolerability, and to identify the recommended Phase 2 dose of ALX148 in combination with azacitidine. The Phase 2 will evaluate the efficacy of evorpacept (ALX148) in combination with azacitidine compared to azacitidine alone for patients with previously untreated higher risk MDS.

Conditions

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Higher Risk Myelodysplastic Syndromes

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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evorpacept (ALX148) + azacitidine

Phase 1: Participants will receive escalating doses of evorpacept (ALX148) in combination with azacitidine 75 mg/m2 IV or subcutaneous daily for 7 days of a 28 day cycle

Phase 2: Participants will receive evorpacept (ALX148) at the recommended Phase 2 dose in combination with azacitidine 75 mg/m2 IV or subcutaneous daily for 7 days of a 28-day cycle

Group Type EXPERIMENTAL

evorpacept

Intervention Type DRUG

Fusion protein that blocks CD47-SIRPalpha pathway

azacitidine

Intervention Type DRUG

Hypomethylating agent (HMA)

azacitidine

Phase 2 only: Participants will receive azacitidine 75 mg/m2 IV or subcutaneous daily for 7 days of a 28-day cycle

Group Type ACTIVE_COMPARATOR

azacitidine

Intervention Type DRUG

Hypomethylating agent (HMA)

Interventions

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evorpacept

Fusion protein that blocks CD47-SIRPalpha pathway

Intervention Type DRUG

azacitidine

Hypomethylating agent (HMA)

Intervention Type DRUG

Other Intervention Names

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ALX148 Vidaza

Eligibility Criteria

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Inclusion Criteria

* Phase 1: Diagnosis of higher risk MDS that is either previously untreated or relapsed/refractory.
* Phase 2: Diagnosis of higher risk MDS that is previously untreated.
* Adequate renal and liver function.
* Age ≥18 years.
* Adequate performance status.

Exclusion Criteria

* Previous allogeneic hematopoietic stem cell transplant (allo-HSCT) for MDS or AML.
* Prior treatment with any anti-CD47 or anti-SIRPα (signal regulatory protein alpha) agent.
* Known active viral infections, including hepatitis B and C, human immunodeficiency virus (HIV), acquired immunodeficiency syndrome (AIDS) related illness, or SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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ALX Oncology Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Southern California, Norris Comprehensive Cancer Center

Los Angeles, California, United States

Site Status

Northwestern University Feinberg School of Medicine

Chicago, Illinois, United States

Site Status

IU Simon Cancer Center

Indianapolis, Indiana, United States

Site Status

START Midwest

Grand Rapids, Michigan, United States

Site Status

Mayo Clinic

Rochester, Minnesota, United States

Site Status

Levine Cancer Institute

Charlotte, North Carolina, United States

Site Status

Duke University Medical Center

Durham, North Carolina, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

University of Texas MD Anderson Cancer Center

Houston, Texas, United States

Site Status

Fred Hutchinson Cancer Research Center

Seattle, Washington, United States

Site Status

Asan Medical Center

Seoul, , South Korea

Site Status

Samsung Medical Center

Seoul, , South Korea

Site Status

Seoul National University Hospital

Seoul, , South Korea

Site Status

Seoul Saint Mary's Hospital

Seoul, , South Korea

Site Status

Severance Hospital

Seoul, , South Korea

Site Status

Hospital General Universitario de Alicante

Alicante, , Spain

Site Status

Hospital San Pedro de Alcantara

Cáceres, , Spain

Site Status

Hospital Universitario de Salamanca

Salamanca, , Spain

Site Status

Hospital Universitari i Politecnic La Fe de Valencia

Valencia, , Spain

Site Status

Countries

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United States South Korea Spain

Other Identifiers

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AT148002

Identifier Type: -

Identifier Source: org_study_id

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