A Study of [225Ac]Ac-AKY-2519 in Patients With B7-H3 Expressing Solid Tumors
This is a Phase 1b, 2-part, multi-center, open-label study to evaluate the safety, tolerability, dosimetry, and pharmacokinetics (PK) of \[64Cu\]Cu-AKY-2519 and/or \[225Ac\]Ac-AKY-2519, as well as the preliminary anti-tumor activity of \[225Ac\]Ac-AKY-2519 in participants with B7-H3 imaging positive solid tumors.
Ask AI to explain this studyKey things to know
This describes the study’s primary purpose.
The study team can explain what participation involves.
These are broad labels—not an eligibility decision.
Checked against the public recordLast updated Oct 22, 2026 · Source: ClinicalTrials.gov
The study is currently accepting participants.
Interventional
Locations may change over time.
Study sponsor
What this study is about
- Purpose
- Treatment
- Study type
- Interventional
- Phase
- Phase 1
- Sponsor
- Aktis Oncology, Inc.
- Interventions being studied
- Drug: [225Ac]Ac-AKY-2519 (therapeutic); Drug: [64Cu]Cu-AKY-2519 (imaging)
How this study is categorized
These labels come from structured fields and exact terms in the public record.
Who may be able to participate
The sponsor separates these requirements into two groups. You do not need to interpret them alone—use them to guide a conversation with the study team.
- Age ≥ 18 years
- Histologic or cytologic confirmation of locally advanced or metastatic NSCLC, ES-SCLC, HNSCC, ESCC, CRC or prostatic adenocarcinoma
- 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
- Prior treatment with a B7-H3 targeted therapy
- Prior treatment with a targeted radiotherapy
- Received an investigational agent within the previous 28 days
- Prior treatment with a cytotoxic chemotherapy, targeted therapy, biologic agent, immunotherapy or external-beam radiotherapy within the previous 28 days
- Impaired cardiac function or clinically significant cardiac disease
- Concurrent serious medical condition that would impair study participation or impact the assessment of treatment related toxicity
Important: This is the sponsor’s public criteria, not a determination of eligibility. The study team must review your individual situation.
U.S. locations
- Biogenix Molecular, LLCMiami, Florida
Source and freshness
Processed from ClinicalTrials.gov. Last public update: Oct 22, 2026. Always confirm current availability with the study team.