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Study of AVZO-021 in Patients With Advanced Solid Tumors | Clinical Trials | Clareo Health

RECRUITINGPHASE1/PHASE2

Study of AVZO-021 in Patients With Advanced Solid Tumors

A Phase 1/2, First-in-Human Study to Assess the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Antitumor Activity of AVZO-021 as a Single Agent and in Combination Therapy in Patients With Advanced Solid Tumors

NCT05867251•Avenzo Therapeutics, Inc.

View on ClinicalTrials.gov

Summary

This study, the first clinical trial of AVZO-021, aims to determine the safety, tolerability, pharmacokinetics, pharmacodynamics, maximum tolerated dose, and anti-tumor effects of AVZO-021 in patients with advanced solid tumors. AVZO-021 is an oral medication that inhibits cyclin-dependent kinase 2 (CDK 2).

Detailed Description

AVZO-021 is a compound being developed for the treatment of patients with advanced solid tumors, specifically, HR+/HER2- breast cancer and cyclin E1 (CCNE1) altered malignancies. AVZO-021 is a selective and potent cyclin-dependent kinase 2 (CDK2) inhibitor, which plays an important role in cell cycle regulation. This is a Phase 1/2 first-in-human, open-label, nonrandomized, multicenter study of AVZO-021. Phase 1 is a dose-escalation phase aimed at assessing the safety and tolerability of AVZO-021 and determining the recommended phase 2 dose (RP2D) as monotherapy and combination therapy. Phase 2 is a dose-expansion phase that will be conducted to assess the antitumor activity of AVZO-021 as monotherapy and combination therapy.

Eligibility

Age

18 - No limit years

Sex

ALL

Healthy Volunteers

Inclusion Criteria

•1. Male or female aged ≥18 years old at screening with Eastern Cooperative Oncology Group (ECOG) 0-1.
•i) Phase 1a Monotherapy Dose Escalation: Patients with locally advanced or metastatic HR+/HER2- breast cancer, CCNE1-amplified tumors that are either epithelial ovarian cancer, primary peritoneal cancer, fallopian tube cancer, endometrial cancer or TNBC, with no other oncogenic driver mutations that are treatable and standard therapies are no longer effective, appropriate, or safe in the opinion of the investigator and medical monitor. Patients with any additional tumor type with CCNE1 amplification can be enrolled only if clinical data is supportive and approved by medical monitor (Cohort 1A).
•ii) Phase 1b Combination Dose Escalation: histologically or cytologically confirmed diagnosis of locally advanced or metastatic HR+ HER2- (HER2-low may be allowed if failed standard of care therapy) breast cancer, who have been previously treated with inhibitor of CDK4/6 and endocrine therapy(Cohorts 1B1, 1B2, 1B3, 1B4, and 1B5); or histologically or cytologically confirmed diagnosis of CCNE1- amplified, locally advanced or metastatic, platinum-refractory or platinum-resistant EOC, primary peritoneal, or fallopian tube cancer (Cohort 1C).
•iii) Phase 2a Monotherapy dose expansion: Histologically or cytologically confirmed diagnosis of locally advanced or metastatic CCNE1 amplified epithelial ovarian cancer, primary peritoneal cancer, fallopian tube cancer, endometrial cancer or TNBC, with no other oncogenic driver mutations that are treatable and standard therapies are no longer effective, appropriate, or safe in the opinion of the investigator and medical monitor (Cohort 2A).
•iv) Phase 2b Combination dose expansion: Histologically or cytologically confirmed diagnosis of locally advanced or metastatic HR+/HER2- (HER2-low may be allowed if failed standard of care therapy) breast cancer who have been previously treated with no more than 1 prior CDK4/6 inhibitor and endocrine therapy (Cohorts 2B1, 2B2, 2B3, 2B4, and 2B5); or Histologically or cytologically confirmed diagnosis of locally advanced or metastatic, CCNE1-amplified, platinum-refractory or platinum-resistant EOC, primary peritoneal cancer, or fallopian tube cancer (Cohort 2C).
•3. No more than 2 prior cytotoxic chemotherapy regimens for locally advanced/metastatic disease (excepting patients treated with an antibody-drug conjugate, with ovarian cancer if there disease is platinum resistant or refractory, having progressed beyond all SOC care; and patients who have received prior chemotherapy in the adjuvant or neoadjuvant setting \>12 months prior to starting AVZO-021 treatment).
•4. Measurable disease as determined by RECIST version 1.1.
•5. Adequate bone marrow and organ function.
•6. Ability to swallow capsules or tablets.

Exclusion Criteria

•1. Received an investigational agent or anticancer therapy within 2 weeks, or 5 half-lives of the drug, whichever is shorter, prior to planned start of AVZO-021.
•2. Received any CDK2 inhibitor, protein kinase membrane associated tyrosine/threonine 1 (PKMYT1) inhibitor, or WEE1 inhibitor anticancer therapy. For cohort B5, prior therapy with topoisomerase inhibitors is not permitted.
•3. Undergone major surgery within 4 weeks prior to planned start of AVZO-021.
•4. Received radiotherapy for palliation within 7 days of the first dose of study treatment, unless specified otherwise in the protocol.
•6. Unresolved toxicities from prior therapy greater than Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 Grade \>1 at the time of starting study treatment.
•7. Clinically unstable cardiac function as described in the protocol.
•8. Any active or chronic infection/disease that compromises the immune system.
•9. Current treatment with strong or moderate cytochrome P450 (CYP)3A4 inhibitors or inducers.
•10. Active second malignancy unless in remission with life expectancy \> 2 years and with documented sponsor approval.
•11. Pregnancy, lactation, or plans to breastfeed during the study or within 6 months of the last dose of study intervention.

Locations (13)

Yale Cancer Center

New Haven, Connecticut, United States

Florida Cancer Specialists

Sarasota, Florida, United States

Moffitt Cancer Center

Tampa, Florida, United States

Perlmutter Cancer Center at NYU Langone Hospital - Long Island

Mineola, New York, United States

NYU Langone Medical Center (Tisch Hospital)

New York, New York, United States

University Hospitals Cleveland Medical Center

Cleveland, Ohio, United States

Oklahoma University

Oklahoma City, Oklahoma, United States

Providence Cancer Institute

Portland, Oregon, United States

Sidney Kimmel Cancer Center (SKCC) at Jefferson Health

Philadelphia, Pennsylvania, United States

Texas Oncology - DFW

Dallas, Texas, United States

Key Dates

Start Date

August 30, 2023

Primary Completion Date

January 31, 2028

Completion Date

January 31, 2030

Last Updated

November 19, 2025

Enrollment

430

ESTIMATED participants

Conditions

Advanced Solid TumorHR+/HER2- Breast CancerHR+, HER2-, Advanced Breast CancerCCNE1 AmplificationEpithelial Ovarian CancerPrimary Peritoneal CancerFallopian Tube CancerEndometrial CancerTNBC - Triple-Negative Breast Cancer

Interventions

AVZO-021

DRUG

Palbociclib

DRUG

Fulvestrant

DRUG

Letrozole

DRUG

Ribociclib

DRUG

Abemaciclib

DRUG

Carboplatin

DRUG

Sacituzumab Govitecan-hziy

DRUG

Contacts

Medical Information

CONTACT

(858) 239-2944 ClinicalTrials@avenzotx.com

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: November 19, 2025Data synced to Clareo: March 29, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

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Study of AVZO-021 in Patients With Advanced Solid Tumors

Inclusion Criteria

Exclusion Criteria

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