A Phase 1 Study of AB521 Monotherapy and Combination Therapies in Renal Cell Carcinoma and Other Solid Tumors

NCT ID: NCT05536141

Last Updated: 2026-01-02

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

Total Enrollment

302 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-10-26

Study Completion Date

2027-07-31

Brief Summary

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The purpose of this study is to evaluate the safety and tolerability of:

* casdatifan when taken alone in participants with advanced solid tumor malignancies and clear cell renal cell carcinoma (ccRCC) during the dose escalation stage; and
* casdatifan monotherapy and casdatifan in combination with cabozantinib or zimberelimab in participants with ccRCC in the dose expansion stage

Detailed Description

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Conditions

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Clear Cell Renal Cell Carcinoma Solid Tumors

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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Dose Escalation Cohort 1

Participants will receive casdatifan orally once daily

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Escalation Cohort 2

Participants will receive casdatifan orally once daily

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Escalation Cohort 3

Participants will receive casdatifan orally twice daily

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Escalation Cohort 4

Participants will receive casdatifan orally once daily

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Escalation Cohort 5

Participants will receive casdatifan orally once daily

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 1

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 2

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 3

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 4

Participants will receive casdatifan orally with with cabozantinib orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Cabozantinib

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 5

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 6

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 7

Participants will receive casdatifan orally with zimberelimab infusion

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Zimberelimab

Intervention Type DRUG

Administered as specified in the treatment arm

Dose Expansion Cohort 8

Participants will receive casdatifan orally

Group Type EXPERIMENTAL

casdatifan

Intervention Type DRUG

Administered as specified in the treatment arm

Interventions

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casdatifan

Administered as specified in the treatment arm

Intervention Type DRUG

Cabozantinib

Administered as specified in the treatment arm

Intervention Type DRUG

Zimberelimab

Administered as specified in the treatment arm

Intervention Type DRUG

Other Intervention Names

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AB521 AB122

Eligibility Criteria

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Inclusion Criteria

* Must have at least one measurable lesion per RECIST guidance
* Eastern Cooperative Oncology Group (ECOG) performance status score of ≤ 1
* Disease-specific criteria for dose escalation:

* Participants may have any pathologically confirmed solid tumor type where no other treatment options are available
* Creatinine clearance ≥ 40 mL/min

Disease-specific criteria for dose-expansion:

* Histologically confirmed ccRCC
* Creatinine clearance ≥ 40 mL/min

Exclusion Criteria

* Use of any live vaccines against infectious diseases (eg, influenza, varicella) within 4 weeks (28 days) of initiation of investigational product
* Has any other clinically significant cardiac, respiratory, or other medical or psychiatric condition that might interfere with a participant's participation in the clinical study or make the administration of investigational product hazardous
* History of trauma or major surgery within 28 days prior to the first dose of investigational product
* For all expansion cohorts: prior treatment with an hypoxia inducible factor (HIF)-2α inhibitor. For the casdatifan + cabozantinib combination cohort, any prior treatment with cabozantinib
* Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Arcus Biosciences, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Arcus Biosciences

Locations

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University of Alabama at Birmingham

Birmingham, Alabama, United States

Site Status RECRUITING

University of California at San Diego

San Diego, California, United States

Site Status NOT_YET_RECRUITING

UCLA

Santa Monica, California, United States

Site Status RECRUITING

University of Miami

Miami, Florida, United States

Site Status RECRUITING

Emory University

Atlanta, Georgia, United States

Site Status RECRUITING

University of Louisville Brown Cancer Center

Louisville, Kentucky, United States

Site Status RECRUITING

Oschner Health

New Orleans, Louisiana, United States

Site Status RECRUITING

Johns Hopkins Hospital

Baltimore, Maryland, United States

Site Status RECRUITING

Dana-Farber Cancer Institute

Boston, Massachusetts, United States

Site Status RECRUITING

Barbara Ann Karmanos Cancer Center

Detroit, Michigan, United States

Site Status RECRUITING

Henry Ford Health System

Detroit, Michigan, United States

Site Status RECRUITING

Nebraska Cancer Specialists - Oncology Hematology West PC

Omaha, Nebraska, United States

Site Status RECRUITING

Tisch Cancer Institute, Icahn Mount Sinai Hospital

New York, New York, United States

Site Status RECRUITING

University Hospitals Cleveland Clinical

Cleveland, Ohio, United States

Site Status RECRUITING

Cleveland Clinic

Cleveland, Ohio, United States

Site Status RECRUITING

UPMC Hillman Cancer Center

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

Sarah Cannon

Nashville, Tennessee, United States

Site Status RECRUITING

Vanderbilt-Ingram Cancer Center

Nashville, Tennessee, United States

Site Status RECRUITING

South Texas Accelerated Research Therapeutics, LLC

San Antonio, Texas, United States

Site Status RECRUITING

Chris O'Brien Lifehouse

Camperdown, , Australia

Site Status NOT_YET_RECRUITING

Box Hill Hospital

Melbourne, , Australia

Site Status NOT_YET_RECRUITING

Ashford Cancer Centre Research/ICON

Sydney, , Australia

Site Status RECRUITING

Macquarie University Hospital

Sydney, , Australia

Site Status NOT_YET_RECRUITING

Asan Medical Center

Seoul, , South Korea

Site Status RECRUITING

Samsung Medical Center

Seoul, , South Korea

Site Status RECRUITING

Seoul National University Bundang Hospital

Seoul, , South Korea

Site Status RECRUITING

Severance Hospital

Seoul, , South Korea

Site Status RECRUITING

Countries

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United States Australia South Korea

Central Contacts

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Medical Director

Role: CONTACT

+1-510-462-3330

Related Links

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Other Identifiers

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2024-519142-70-00

Identifier Type: CTIS

Identifier Source: secondary_id

ARC-20

Identifier Type: -

Identifier Source: org_study_id

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