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NCT07020117PHASE1Recruiting

A Study of [225Ac]Ac-AKY-1189 in Patients With Solid Tumors

Aktis Oncology, Inc.

Start Date

8/22/2025

Completion Date

6/1/2032

Summary

This is a first-in-human Phase 1b, 2-part, multicenter open-label clinical study to evaluate safety and efficacy of a Nectin-4 radiopharmaceutical (\[225Ac\]Ac-AKY-1189) in patients with locally advanced or metastatic solid tumors and to establish the maximum tolerated dose (MTD) or maximum administered dose (MAD) and the recommended Phase 2 dose.

Detailed Description

This study consists of two parts (Part 1 and 2). Part 1 is the dose escalation portion of the study, which will investigate ascending doses of \[225Ac\]Ac-AKY-1189 (up to 6 cycles) in patients with locally advanced or metastatic solid tumors. The aim of Part 1 is to determine the maximum tolerated dose (MTD) or maximum administered dose (MAD) and the recommended Phase 2 dose. Part 2 will be the dose expansion portion of the study and will enroll locally advanced or metastatic solid tumor patients who are identified as Nectin-4 positive by \[64Cu\] Cu-AKY-1189. Part 2 aims to further assess the efficacy of \[225Ac\]Ac-AKY-1189 at the RP2D in 3 different cohorts of patients.

Eligibility Criteria

Age Range: 18 years to No maximum

Inclusion Criteria: * Histologic or cytologic confirmation of locally advance or metastatic disease * Radiologic confirmation on CT of at least one measurable tumor lesion per RECIST v1.1 * ECOG Performance Status of 0 or 1 * Adequate end-organ function * Ability to give informed consent and comply with study requirements * Patients with CNS metastases are eligible if they have received therapy and are neurologically stable, asymptomatic and not receiving corticosteroids * Documented disease progression on prior line of therapy for metastatic disease Exclusion Criteria: * Prior treatment with a therapeutic radiopharmaceutical * Prior treatment with a Nectin-4 targeted therapy, except enfortumab vedotin * Received an investigational agent within the previous 28days * Prior treatment with a cytotoxic chemotherapy, targeted therapy, biologic agent, immunotherapy or external-beam radiotherapy in the 3 weeks prior to study treatment * Concurrent serious medical condition that would impair study participation or impact the assessment of treatment related toxicity

Interventions

DRUG

[225Ac]Ac-AKY-1189 (therapeutic)

DRUG

[64Cu]Cu-AKY-1189 (imaging)

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Conditions

Urothelial Carcinoma BladderTriple Negative Breast Cancer (TNBC)Hormone Receptor Positive Breast AdenocarcinomaNon Small Cell Lung CancerCervical AdenocarcinomaColorectal AdenocarcinomaHead and Neck Cancer

Locations

City of Hope

Duarte, California 91010

United States

Hoag Memorial Hospital Presbyterian

Irvine, California 92618

United States

Biogenix Molecular, LLC

Miami, Florida 33165

United States

Advent Health Medical Group Radiation Oncology at Central Florida

Orlando, Florida 32804

United States

University of Iowa

Iowa City, Iowa 52242

United States

University of Kansas

Westwood, Kansas 66205

United States

United Theranostics

Glen Burnie, Maryland 21061

United States

BAMF Health

Grand Rapids, Michigan 49503

United States

Icahn School of Medicine at Mt. Sinai

New York, New York 10029

United States

UPMC

Pittsburgh, Pennsylvania 15232

United States

MD Anderson Cancer Center

Houston, Texas 77030

United States

Huntsman Cancer Institute

Salt Lake City, Utah 84112

United States