Recent Updates
Recently added Catalysts

AMO959

Phase 1

PSMA-positive Metastatic Castration Resistant Prostate Cancer (mCRPC) With Prior Exposure to One Prior ARPI Who Are Candidates for Taxane-based Chemotherapy | Small molecule | Oncology |Novartis AG|Last Updated: Aug 18, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLED
Total Trials1
Total Enrollment123

FDA Designations

No designations recorded

Clinical trial landscape

AMO959 · 1 trial · 1 indication

Phase 1 1
NCT07226986A Phase Ib/II Open-label Study of AMO959 With Lutetium (177Lu) Vipivotide Tetraxetan (AAA617) in Combination With ARPI in Adult Participants With PSMA-positive mCRPCPSMA-positive Metastatic Castration Resistant Prostate Cancer (mCRPC) With Prior Exposure to One Prior ARPI Who Are Candidates for Taxane-based Chemotherapy
RECRUITING123 Analytics
PHASE1RECRUITING
A Phase Ib/II Open-label Study of AMO959 With Lutetium (177Lu) Vipivotide Tetraxetan (AAA617) in Combination With ARPI in Adult Participants With PSMA-positive mCRPC
PSMA-positive Metastatic Castration Resistant Prostate Cancer (mCRPC) With Prior Exposure to One Prior ARPI Who Are Candidates for Taxane-based ChemotherapyUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase Ib: Incidence rate of Dose-limiting toxicities (DLTs)
Up to 42 days after the first AAA617 dose administration

Incidence of dose limiting toxicities (DLTs) with AMO959 in combination with AAA617 +/- ARPI A dose-limiting toxicity (DLT) is defined as an adverse event or abnormal laboratory value assessed as unrelated to disease, disease progression, inter-current illness/injury, or concomitant medications that occurs within the evaluation period and meets any of the criteria specified in the protocol. The National Cancer Institute Common Terminology Criteria for Adverse events (NCI CTCAE) version 5.0 will be used for all grading.

Phase Ib: Incidence rate of Adverse Events (AEs) and Serious Adverse Events (SAEs)
From date of start of study treatment, assessed up to approximately 45 months

Incidence of adverse events by type, frequency, and severity, as graded by the NCI CTCAE version 5.0.

Phase Ib: Number of Participants with dose adjustments
From date of start of study treatment, assessed up to approximately 24 months

The number of participants with dose adjustments (reductions, interruption, or permanent discontinuation).

Phase Ib: Dose Intensity
From date of start of study treatment, assessed up to approximately 24 months

Dose intensity (computed as the ratio of actual cumulative dose received and actual duration of exposure) and the relative dose intensity (computed as the ratio of dose intensity and planned dose intensity).

Phase Ib: Duration of exposure to each study drug
From date of start of study treatment, assessed up to approximately 24 months

Duration of exposure (in months) to each study drug.

Phase II: Biochemical Response (PSA50)
From date of start of study treatment, assessed up to approximately 24 months

Biochemical response (PSA50), defined as the proportion of participants who achieved a ≥ 50% decrease in PSA from baseline at any time during the treatment period prior to start of new anti-cancer therapy that is confirmed by a second PSA measurement ≥ 4 weeks later.

Secondary Endpoints

Prostate Specific Antigen 90 (PSA90) response
From date of start of study treatment, assessed up to approximately 24 months
Phase Ib: Prostate Specific Antigen 50 (PSA50) response
From date of start of study treatment, assessed up to approximately 24 months
Phase Ib and Phase II: Radiographic progression-free survival (rPFS)
From date of start of study treatment (Phase Ib) / randomization (Phase II), assessed up to approximately 24 months
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1b: DoubletEXPERIMENTALParticipants will receive AMO959 BID for first 14 days followed by AAA617+AMO959 every 6 weeks for a maximum of 6 cycles.
Phase 1b: TripletEXPERIMENTALParticipants will receive AAA617 on day 1 followed by AMO959 BID (days 2-15), repeated every 6 weeks, for a maximum of 6 cycles with an ARPI (abiraterone or enzalutamide) administered continuously starting on day 1.
Phase 1b: Food EffectEXPERIMENTALParticipants will receive a single dose of AMO959 on Day 1 (fed), followed by 2-day washout, then AMO959 BID (fasted) for 14 days followed by 2-day washout and AAA617+AMO959 (fasted) every 6 weeks for a maximum of 6 cycles.
Phase II: Arm 1EXPERIMENTALParticipants will receive AAA617 on day 1 followed by AMO959 BID (days 2-15), repeated every 6 weeks, for a maximum of 6 cycles with an ARPI (abiraterone or enzalutamide administered continuously starting on day 1.
Phase II: Arm 2EXPERIMENTALParticipants will receive AAA617 on day 1 followed by AMO959 BID (days 2-15), repeated every 6 weeks, for a maximum of 6 cycles with an ARPI (abiraterone or enzalutamide) administered continuously starting on day 1.
Phase II: Arm 3EXPERIMENTALParticipants will receive AAA617 every 6 weeks for a maximum of 6 cycles, with ARPI (abiraterone or enzalutamide) administered continuously starting on day 1.

Interventions

NameTypeDescription
AMO959DRUGDNA Damage Response inhibitor
AAA617RADIATIONPSMA-targeted radiopharmaceutical
EnzalutamideDRUGAndrogen receptor pathway inhibitor
AbirateroneDRUGAndrogen receptor pathway inhibitor
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites22

Key Inclusion Criteria: * Signed informed consent must be obtained prior to participation in the study. * Participants must be adults ≥ 18 years of age. * Participants must have an ECOG performance status of 0 to 2. * Participants must have histologically confirmed adenocarcinoma of the prostate. P...

Countries:United StatesAustraliaFranceGermanyItalyJapanSpain
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

LOWAug 19, 2026NCT07226986lastUpdatePostDate: changed
LOWAug 19, 2026NCT07226986lastUpdatePostDate: changed
LOWAug 19, 2026NCT07226986lastUpdatePostDate: changed
LOWJul 2, 2026NCT07226986lastUpdatePostDate: changed
LOWJul 2, 2026NCT07226986lastUpdatePostDate: changed
LOWJul 2, 2026NCT07226986lastUpdatePostDate: changed
LOWJun 23, 2026NCT07226986lastUpdatePostDate: changed
LOWJun 23, 2026NCT07226986lastUpdatePostDate: changed
LOWJun 16, 2026NCT07226986lastUpdatePostDate: changed
LOWJun 16, 2026NCT07226986lastUpdatePostDate: changed
LOWJun 16, 2026NCT07226986lastUpdatePostDate: changed

Frequently asked questions about AMO959

What is AMO959 used for in PSMA-positive metastatic castration resistant prostate cancer?

AMO959 is an investigational small molecule being studied for PSMA-positive metastatic castration resistant prostate cancer (mCRPC) in patients who have had prior exposure to one androgen receptor pathway inhibitor (ARPI) and are candidates for taxane-based chemotherapy. It is currently in Phase 1 clinical development.

What does AMO959 target?

AMO959 is being studied in combination with Lutetium (177Lu) Vipivotide Tetraxetan (AAA617) and an ARPI in patients with PSMA-positive mCRPC. The treatment approach is directed at PSMA-positive tumors, though the specific molecular target of AMO959 itself is not disclosed.

Who is developing AMO959?

AMO959 is being developed by Novartis AG, a global healthcare company traded on the New York Stock Exchange under the ticker NVS. The company is conducting clinical trials of AMO959 in multiple countries for the treatment of PSMA-positive metastatic castration resistant prostate cancer.

What phase is AMO959 in?

AMO959 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing trial is a Phase Ib/II open-label study, currently recruiting participants with PSMA-positive mCRPC.

What clinical trials is AMO959 in?

AMO959 is being evaluated in a Phase Ib/II open-label study with the National Clinical Trial identifier NCT07226986. The trial is recruiting 123 adult male participants across the United States, Australia, France, Germany, Italy, Japan, and Spain, and is studying AMO959 in combination with Lutetium (177Lu) Vipivotide Tetraxetan and an ARPI.

Is AMO959 the same as Lutetium (177Lu) Vipivotide Tetraxetan?

AMO959 is not the same as Lutetium (177Lu) Vipivotide Tetraxetan. AMO959 is a separate investigational small molecule being studied in combination with Lutetium (177Lu) Vipivotide Tetraxetan (also known as AAA617) and an androgen receptor pathway inhibitor in patients with PSMA-positive metastatic castration resistant prostate cancer.