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Ac-AKY-2519

Phase 1

Castration Resistant Metastatic Prostate Cancer | Small molecule | Oncology |Aktis Oncology, Inc.|Last Updated: May 12, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment138
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07581184A Study of [225Ac]Ac-AKY-2519 in Patients With Metastatic Castration-Resistant Prostate CancerPHASE1 RECRUITING 138Jul 1, 2026Jun 1, 2032May 12, 20262 United States
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Study Endpoints
Primary Endpoints
Occurrence of adverse events by severity and occurrence of serious adverse events (SAEs) in participants who received [225Ac]Ac-AKY-2519
Up to 30 days following last administration of [225Ac]Ac-AKY-2519

An AE is defined as any untoward medical occurrence in a participant administered study drug, which does not necessarily have to have a causal relationship with the study drug. The number of patients experiencing an AE and the number of patients experiencing an SAE will be reported. Up to 30 days following last administration of \[225Ac\]Ac-AKY-2519

Occurrence of dose-limiting toxicity (DLT) in mCRPC participants with and without prior 177Lu-PSMA-617 exposure
From first administration of [225Ac]Ac-AKY-2519 to the end of Cycle 1 (each cycle is 28 days)

Dose-limiting toxicities (DLTs) is defined as any predefined AE occurring during the DLT observation period, except those that are clearly and incontrovertibly due to extraneous circumstances. The number of patients who experience a DLT will be reported separately for each cohort and by dose level within each cohort.

Secondary Endpoints
Occurrence of adverse events by severity and occurrence of serious adverse events (SAEs) in participants who received [64Cu]Cu-AKY-2519
Up to 30 days following last administration of [64Cu]Cu-AKY-2519
Objective Response Rate (ORR)
Up to 30 days following last administration of [225Ac]Ac-AKY-2519
Duration of Response (DoR)
Up to 5 years after first administration
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
[225Ac]Ac-AKY-2519EXPERIMENTAL -
Interventions
NameTypeDescription
[225Ac]Ac-AKY-2519 (therapeutic)DRUG\[225Ac\]Ac-AKY-2519 Injection
[64Cu]Cu-AKY-2519 (imaging)DRUG\[64Cu\]Cu-AKY-2519 Injection
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Eligibility Criteria
Age Range18 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Age ≥ 18 years * Histologic or cytologic confirmation of prostatic adenocarcinoma * 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 re...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07581184primaryCompletionDate: changed
LOWMay 24, 2026NCT07581184studyFirstPostDate: changed
LOWMay 21, 2026NCT07581184NEW_TRIAL: changed
LOWMay 21, 2026NCT07581184NEW_TRIAL: changed