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AZD4956

Phase 1

Solid Tumours | Small molecule | Oncology |AstraZeneca PLC|Trials Updated: Oct 1, 2026

AZD4956 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Mar 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment180

FDA Designations

No designations recorded

AZD4956 clinical trials

AZD4956 · 1 trial · 1 indication

Phase 1 1
NCT07446855Study of AZD4956 as Monotherapy and in Combination With Anti-Cancer Agents in Participants With Advanced/Metastatic Homologous Recombination Deficient Solid TumoursSolid Tumours
RECRUITING180 Analytics
PHASE1RECRUITING
Study of AZD4956 as Monotherapy and in Combination With Anti-Cancer Agents in Participants With Advanced/Metastatic Homologous Recombination Deficient Solid Tumours
Solid TumoursUnlock trial analytics

Study Endpoints

Primary Endpoints

Parts A and B: Number of participants with adverse events (AEs) and serious adverse events (SAEs)
From Screening (Day -28) to follow-up (up to 3.5 years)

To assess the safety and tolerability of AZD4956 monotherapy and in combination with anti-cancer agent(s).

Part B: Progression free survival (PFS)
Up to 3.5 years

PFS is defined as the time from the start of treatment until the date of objective disease progression or death (by any cause in the absence of progression), regardless of whether the participants withdraw from study treatment or receive another anti-cancer therapy prior to progression.

Part A - Number of participants with dose-limiting toxicities (DLTs)
Up to 28 days

To assess the safety and tolerability of AZD4956 monotherapy and in combination with anti-cancer agent(s).

Secondary Endpoints

Objective response (OR)
Up to 3.5 years
Duration of response (DoR)
Up to 3.5 years
Best Overall Response (BOR)
Up to 3.5 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Module 1 Part A: AZD4956 monotherapy (Dose escalation)EXPERIMENTALParticipants will receive AZD4956 as monotherapy at ascending dose levels.
Module 2 Part A: AZD4956 + saruparib (Dose escalation)EXPERIMENTALParticipants will receive AZD4956 at ascending dose levels in combination with saruparib.
Module 2 Part A Optional PD backfill cohort: AZD4956 + saruparibEXPERIMENTALParticipants will receive AZD4956 in combination with saruparib.
Module 2 Part A Optional PD backfill cohort: Saruparib monotherapyEXPERIMENTALParticipants will receive saruparib monotherapy.
Module 2 Part A Optional non-PD backfill cohort: AZD4956 + saruparibEXPERIMENTALParticipants with metastatic castrate resistant prostate cancer (mCRPC) will receive AZD4956 in combination with saruparib.
Module 2 Part B: AZD4956 + saruparib (Dose expansion)EXPERIMENTALParticipants will receive AZD4956 in combination with saruparib.

Interventions

NameTypeDescription
AZD4956DRUGAZD4956 will be administered orally.
SaruparibDRUGSaruparib will be administered orally.
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Eligibility Criteria

Age Range18 Years to 130 Years
SexALL
Healthy VolunteersNo
Study Sites19

Core Inclusion Criteria: * Documented locally advanced or metastatic solid tumour malignancy. * Eastern cooperative oncology group (ECOG) performance status of 0 or 1 with no deterioration over the previous 2 weeks prior to screening and first day of dosing. * Minimum life expectancy ≥ 12 weeks. * ...

Countries:United StatesAustraliaJapanSouth KoreaSpainUnited Kingdom
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Competitive Landscape -Other Solid Tumors 10 trials (matched to "Solid Tumours")

Recent Changes (Last 90 Days)

LOWOct 1, 2026NCT07446855lastUpdatePostDate: changed
LOWOct 1, 2026NCT07446855lastUpdatePostDate: changed
LOWSep 8, 2026NCT07446855lastUpdatePostDate: changed
LOWSep 8, 2026NCT07446855lastUpdatePostDate: changed
LOWAug 11, 2026NCT07446855lastUpdatePostDate: changed
LOWAug 11, 2026NCT07446855lastUpdatePostDate: changed

Frequently asked questions about AZD4956

What is AZD4956?

AZD4956 is an investigational small molecule developed by AstraZeneca PLC for the treatment of solid tumours. It is being studied as a monotherapy and in combination with other anti-cancer agents in patients with advanced or metastatic homologous recombination deficient solid tumours. It is currently in Phase 1 clinical development and has not been approved for any indication.

What is AZD4956 used for in solid tumours?

AZD4956 is being evaluated for advanced or metastatic homologous recombination deficient solid tumours. The Phase 1 study enrolls adults with these biomarker-selected cancers and tests AZD4956 both alone and combined with other anti-cancer agents. It remains investigational, so it is not yet an approved treatment option for solid tumours.

Who is developing AZD4956?

AZD4956 is being developed by AstraZeneca PLC, which trades on the Nasdaq under the ticker AZN. AstraZeneca is the sponsor of the Phase 1 clinical program evaluating the compound in advanced and metastatic homologous recombination deficient solid tumours across multiple countries.

What phase is AZD4956 in?

AZD4956 is in Phase 1 clinical development. The single registered trial is a Phase 1 study that is currently recruiting participants. Because it is still in early-stage testing, AZD4956 is investigational and has not received regulatory approval for any indication.

What clinical trials is AZD4956 in?

AZD4956 is being studied in one Phase 1 trial, NCT07446855, titled a study of AZD4956 as monotherapy and in combination with anti-cancer agents in participants with advanced or metastatic homologous recombination deficient solid tumours. The trial is recruiting, plans to enroll 180 participants, and runs in the United States, Australia, Japan, South Korea, Spain, and the United Kingdom.

Is AZD4956 biomarker selected?

Yes. The AZD4956 Phase 1 trial enrolls patients with homologous recombination deficient solid tumours, so enrollment is restricted to a biomarker-defined population. The study is controlled and randomized, and participants receive either AZD4956 as monotherapy or AZD4956 in combination with other anti-cancer agents.