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AZD8205

Phase 1

Breast Cancer | Small molecule | Oncology |AstraZeneca PLC|Last Updated: May 18, 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
RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment460
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05123482A Phase I/IIa Study of AZD8205 Given Alone or Combined, in Participants With Advanced/Metastatic Solid MalignanciesPHASE1 RECRUITING 460Oct 18, 2021Sep 29, 2027May 18, 202667 United States, Australia +13
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Study Endpoints
Primary Endpoints
The number of patients with adverse events
From time of Informed consent to 30 days post last dose (approximately 1 year).

Number of patients with adverse events by system organ class and preferred term

The number of patients with serious adverse events
From time of Informed consent to 30 days post last dose (approximately 1 year)

Number of patients with serious adverse events by system organ class and preferred term

The number of patients with dose-limiting toxicity (DLT), as defined in the protocol.
From first dose of study treatment until the end of Cycle 1 (approximately 21 days).

A DLT is defined as any toxicity that occurs from the first dose of study treatment up to and including the planned end of Cycle 1 (the DLT assessment period) that is assessed as unrelated to the disease or disease-related processes under investigation and which includes pre-defined haematological and non-haematological toxicities.

The number of patients with changes from baseline laboratory findings, ECGs and vital signs
From time of informed consent to 30 days post last dose (approximately 1 year)

Description of laboratory findings and vital signs variables over time including change from baseline.

Secondary Endpoints
Objective Response Rate (ORR)
From first dose of AZD8205 to progressive disease or death in the absence of disease progression ( approx. 2 years )
Duration of response (DoR)
From the first documented response to confirmed progressive disease or death ( approx. 2 years )
Progression free Survival (PFS)
From first dose of AZD8205 to progressive disease or death in the absence of disease progression ( approx. 2 years )
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Sub-Study 1 AZD8205 MonotherapyEXPERIMENTALSub-Study 1 has two parts: Part A : The aim is to determine the safety, tolerability, Recommended Phase 2 Dose (RP2D), and/or the Maximum Tolerated Dose (MTD) of AZD8205. Part B: The aim of dose expansion is to evaluate anti-tumor activity of AZD8205 as monotherapy in select solid tumors.
Sub Study 2: AZD8205 in combination with rilvegostomigEXPERIMENTALSub-Study 2 has two parts: Part A : Dose escalation to determine the safety, tolerability of AZD8205 + rilvegostomig Part B: Dose expansion to evaluate anti-tumor activity of AZD8205 + rilvegostomig in select solid tumors.
Sub-Study 3 AZD8205 in combination with saruparib, with or without rilvegostomigEXPERIMENTALSub-Study 3 has two parts: Part A : Dose escalation to determine the safety, tolerability of AZD8205 + saruparib. Rilvegostomig may be added in a triplet combination once an AZD8205 + saruparib combination dose/schedule has been considered safe. Part B: Dose expansion to evaluate anti-tumor activity of AZD8205 + saruparib with or without rilvegostomig in select solid tumors.
Sub-Study 4: AZD8205 in combination with AZD9574 with or without rilvegostomig (AZD2936)EXPERIMENTALSub-Study 4 has two parts: Part A : Dose escalation to determine the safety, tolerability of AZD8205 + AZD9574. Rilvegostomig may be added in a triplet combination once an AZD8205 + AZD9574 combination dose/schedule has been considered safe. Part B: may be added in the future depending on emerging data, following a formal protocol amendment.
Interventions
NameTypeDescription
AZD8205DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial cancers and squamous non-small cell lung cancers.
AZD8205 and AZD2936 (Rilvegostomig)DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial cancers and squamous non-small cell lung cancers. Rilvegostomig is a bispecific antibody that specifically binds to human TIGIT and PD-1 and is a potential anticancer therapy in patients with advanced or metastatic solid tumors.
AZD8205 and AZD5305 (saruparib)DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial and squamous non-small cell lung cancers. Saruparib is a PARP inhibitor that stops the PARP protein from doing its repair work in damaged cancer cells, resulting in cell death, and is a potential anticancer therapy in patients with advanced or metastatic solid tumors.
AZD8205 and AZD5305 (saruparib) and AZD2936 (rilvegostomig)DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial and squamous non-small cell lung cancers. Saruparib is a PARP inhibitor that stops the PARP protein from doing its repair work in damaged cancer cells, resulting in cell death, and is a potential anticancer therapy in patients with advanced or metastatic solid tumors. Rilvegostomig is a bispecific antibody that specifically binds to human TIGIT and PD-1 and is a potential anticancer therapy in patients with advanced or metastatic solid tumors.
AZD8205 in combination with AZD9574DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial and squamous non-small cell lung cancers. AZD9574 is a PARP inhibitor that stops the PARP protein from doing its repair work in damaged cancer cells, resulting in cell death, and is a potential anticancer therapy in patients with advanced or metastatic solid tumors.
AZD8205 in combination with AZD9574 plus rilvegostomig (AZD2936)DRUGAZD8205 is an antibody drug conjugate that has the potential to treat a wide variety of solid tumors including but not limited to breast cancer, Biliary Tract Cancer, ovarian, endometrial and squamous non-small cell lung cancers. AZD9574 is a PARP inhibitor that stops the PARP protein from doing its repair work in damaged cancer cells, resulting in cell death, and is a potential anticancer therapy in patients with advanced or metastatic solid tumors. Rilvegostomig is a bispecific antibody that specifically binds to human TIGIT and PD-1 and is a potential anticancer therapy in patients with advanced or metastatic solid tumors.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites67

Key Inclusion Criteria: * Age ≥ 18 years * Relapsed/metastatic solid tumors treated with prior adequate standard of care therapy for tumor type and stage of disease or where in the opinion of the Investigator, a clinical trial is the best option for the next treatment based on response and/or toler...

Countries:United StatesAustraliaBelgiumCanadaChinaHungaryItalyJapanNetherlandsPolandSouth KoreaSpainTaiwanThailandUnited Kingdom
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Competitive Landscape -Breast Cancer 408 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib, Trastuzumab Deruxtecan, Paclitaxel, Trastuzumab
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy, Imlunestrant, Tamoxifen, Anastrozole
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1, Capecitabine, Paclitaxel, Nab-paclitaxel
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib, Alpelisib, Fulvestrant, Trastuzumab, Pertuzumab
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant, PF-07220060, letrozole, abemaciclib
BeOne Medicines Ltd. Sponsored ADRONC6PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib, Arm A: Gedatolisib + Palbociclib + Fulvestrant
Relay Therapeutics, Inc.RLAY2PHASE3RLY-2608, Capivasertib, Fulvestrant, Palbociclib, Ribociclib
GSK plc Sponsored ADRGSK2PHASE3Niraparib
Greenwich LifeSciences, Inc.GLSI1PHASE3GLSI-100
Bristol-Myers Squibb CompanyBMY5PHASE2Iza-bren, Nab-paclitaxel, Paclitaxel, Capecitabine, Carboplatin
BriaCell Therapeutics CorpBCTX2PHASE3SV-BR-1-GM, Cyclophosphamide, Interferon infiltration of the inoculation site, Retifanlimab, Treatment of Physician's Choice
Incyte CorporationINCY4PHASE2Ruxolitinib, Capecitabine, Regorafenib, Pembrolizumab, Axatilimab
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam, Alisertib, Endocrine therapy
Immutep Ltd Sponsored ADRIMMP1PHASE2eftilagimod alpha, Paclitaxel
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05123482primaryCompletionDate: changed
LOWMay 24, 2026NCT05123482studyFirstPostDate: changed