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Dato-DXd

Phase 3

Breast Cancer | Small molecule | Oncology |AstraZeneca PLC|Last Updated: May 15, 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
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials6
Total Enrollment5,177
FDA Designations
No designations recorded
Clinical Trials (6)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07205822A Study of Dato-DXd in Inoperable or Metastatic Hormone Receptor-positive, HER2 IHC 0 Breast CancerPHASE3 RECRUITING 100Oct 30, 2025Feb 2, 2028May 12, 202640 United States, China +4
NCT06103864A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast CancerPHASE3 RECRUITING 625Nov 23, 2023Sep 30, 2030Apr 30, 2026316 United States, Argentina +22
NCT06112379A Phase III Randomised Study to Evaluate Dato-DXd and Durvalumab for Neoadjuvant/Adjuvant Treatment of Triple-Negative or Hormone Receptor-low/HER2-negative Breast CancerPHASE3 ACTIVE NOT_RECRUITING 1,902Nov 14, 2023Sep 23, 2032Apr 2, 2026283 United States, Australia +24
NCT05629585A Study of Dato-DXd With or Without Durvalumab Versus Investigator's Choice of Therapy in Patients With Stage I-III Triple-negative Breast Cancer Without Pathological Complete Response Following Neoadjuvant Therapy (TROPION-Breast03)PHASE3 ACTIVE NOT_RECRUITING 1,174Nov 28, 2022Jan 30, 2030Mar 18, 2026276 United States, Belgium +15
NCT05374512A Study of Dato-DXd Versus Investigator's Choice Chemotherapy in Patients With Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer, Who Are Not Candidates for PD-1/PD-L1 Inhibitor Therapy (TROPION-Breast02)PHASE3 ACTIVE NOT_RECRUITING 644May 16, 2022Dec 31, 2026May 15, 2026228 United States, Argentina +21
NCT05104866A Phase-3, Open-Label, Randomized Study of Dato-DXd Versus Investigator's Choice of Chemotherapy (ICC) in Participants With Inoperable or Metastatic HR-Positive, HER2-Negative Breast Cancer Who Have Been Treated With One or Two Prior Lines of Systemic Chemotherapy (TROPION-Breast01)PHASE3 ACTIVE NOT_RECRUITING 732Oct 18, 2021Jul 31, 2026May 5, 2026167 United States, Argentina +18
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Study Endpoints
Primary Endpoints
Progression Free Survival (PFS) per RECIST 1.1 as assessed by the investigator
From date of first dose of study intervention until disease progression per RECIST 1.1 or death from any cause, whichever occurs first, assessed up to approximately 24 months

PFS is defined as time from date of first dose of study intervention until progression per RECIST 1.1 as assessed by the investigator or death due to any cause.

Progression Free Survival (PFS)
From randomisation until progression per RECIST 1.1 as assessed by BICR, or death due to any cause (anticipated to be up to 33 months).

PFS is defined as time from randomisation until progression per RECIST 1.1 as assessed by BICR, or death due to any cause. The comparison will include all randomised participants, as randomised, regardless of whether the participant withdraws from randomised therapy, receives another anticancer therapy or clinically progresses prior to RECIST 1.1 progression. However, if the participant progresses or dies immediately after 2 or more consecutive missed visits, the participant will be censored at the time of the latest evaluable assessment prior to the 2 missed visits. The measure of interest is the HR of PFS.

Event-free survival (EFS) in the experimental vs control arms
Date of randomization to date of the EFS event, up to 93 months after the first subject randomized

EFS is defined as the time from the date of randomisation until the date of the first occurrence of any of the following events: disease progression precluding surgery, disease recurrence (local, regional, distant, or contralateral), second primary invasive cancer (other than squamous or basal cell skin cancer), or relapse from prior malignancy, or death by any cause (in the absence of recurrence). Non-invasive breast cancers and positive margins in the surgical sample do not count as an event for EFS. EFS will be determined by the investigator based on all available clinical assessments. The analysis will include all randomised participants, as randomised, regardless of whether the participant withdraws from randomised therapy or receives another anticancer therapy. The measure of interest will be the Hazard Ratio of EFS.

Invasive disease-free survival (iDFS) for Dato-DXd + durvalumab vs. ICT
From randomisation to date of the event, up to 57 months from first subject in

iDFS is defined as time from randomisation until date of first occurrence of one of the following events: ipsilateral invasive breast tumour (local) recurrence, regional invasive breast cancer recurrence (axilla, regional lymph nodes, chest wall, and skin of ipsilateral breast), or distant recurrence (metastatic breast cancer that has either been biopsy-confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; second primary non-breast invasive cancer (other than squamous or basal cell skin cancer); or death from any cause. iDFS will be determined based on disease recurrence per investigator assessment based on all available clinical assessments. The analysis will include all randomised participants, as randomised, regardless of whether the participant withdraws from randomised therapy or receives another anticancer therapy. The measure of interest will be the HR (hazard ratio) of iDFS for Dato-DXd + durvalumab vs ICT.

Overall Survival (OS)
From randomisation until the date of death due to any cause (approximately 42 months)

OS is defined as the time from randomisation until the date of death due to any cause. The analysis will include all randomised participants, by treatment group as randomised. The measure of interest is the hazard ratio \[HR\] of OS.

Progression-Free Survival
On-study tumor assessments occur every 6 weeks then every 9 weeks until disease progression, death or withdrawal of consent assessed up to data cut-off (17Jul2023) to a maximum of approximately 21 months

PFS is defined as time from randomization until progression per RECIST 1.1, as assessed by BICR, or death due to any cause. The analysis will include all randomized participants as randomized regardless of whether the participant withdraws from therapy, receives another anti-cancer therapy, or clinically progresses prior to RECIST 1.1.

Overall Survival
From date of randomization until death due to any cause. Assessed up to data cut-off (24Jul2024) to a maximum of approximately 33 months.

OS is defined as time from randomization until the date of death due to any cause. The comparison will include all randomized participants as randomized, regardless of whether the participant withdraws from therapy or receives another anti-cancer therapy. The measure of interest is the hazard ratio of OS.

Secondary Endpoints
Proportion of participants with oral mucositis/stomatitis
From date of first dose of study intervention until 28 days after the last dose (Safety Follow-up)
Proportion of participants with ocular events
From date of first dose of study intervention until 28 days after the last dose (Safety Follow-up)
Proportion of participants with Grade 3 or higher Adverse Events (AEs) possibly related to Dato-DXd treatment
From date of first dose of study intervention until 28 days after the last dose (Safety Follow-up)
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
single arm groupEXPERIMENTALAll participants will receive Dato-DXd (6 mg/kg IV on Day 1, Q3W; up to a maximum of 540 mg Q3W for participants ≥ 90 kg) until investigator-defined disease progression according to RECIST 1.1 or until unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation is met.
Dato-DXd + durvalumabEXPERIMENTALArm 1: Dato-DXd + durvalumab
Investigator's Choice of Chemotherapy (ICC) in combination with pembrolizumabACTIVE_COMPARATORArm 2: Investigator's Choice of Chemotherapy (ICC) in combination with pembrolizumab (paclitaxel, nab-paclitaxel, or gemcitabine + carboplatin)
Dato-DXdEXPERIMENTALArm 3: Dato-DXd
Dato-DXd plus durvalumabEXPERIMENTALParticipants receive durvalumab every 3 weeks (Q3W) + Dato-DXd Q3W as neoadjuvant therapy prior to surgery; followed by 9 cycles of durvaluamb Q3W as adjuvant therapy post-surgery. Adjuvant chemotherapy may be given in combination with durvalumab only if participants have residual disease. Olaparib may be given for participants with gBRCA-positive tumours and residual disease Adjuvant chemotherapy may be one of these: 1. Doxorubicin (Q3W) or epirubicin (Q3W) + cyclophosphamide (Q3W) for 4 cycles (12 weeks) followed by paclitaxel (weekly) and carboplatin (weekly or Q3W) for 4 cycles (12 weeks); 2. Doxorubicin (Q3W) or epirubicin (Q3W) + cyclophosphamide (Q3W) for 4 cycles (12 weeks) followed by paclitaxel (weekly) for 4 cycles (12 weeks); 3. Carboplatin (weekly or Q3W) + paclitaxel (weekly) for 4 cycles (12 weeks); 4. Capecitabine (Q3W) for 8 cycles.
Pembrolizumab plus chemotherapyACTIVE_COMPARATORParticipants receive pembrolizumab every 3 weeks (Q3W) + paclitaxel weekly + carboplatin (weekly or Q3W) x 4 cycles, followed by pembrolizumab Q3W + (doxorubicin OR epirubicin) + cyclophosphamide Q3W x 4 cycles as neoadjuvant therapy prior to surgery; followed by 9 cycles of pembrolizumab Q3W as adjuvant therapy post-surgery. Adjuvant capecitabine (Q3W) for 8 cycles may be given in combination with pembrolizumab only if participants have residual disease. Olaparib may be given for participants with gBRCA-positive tumours and residual disease.
Dato-DXd in combination with DurvalumabEXPERIMENTALArm 1: Dato-DXd 6 mg/kg IV Q3W x 8 cycles + Durvalumab 1120 mg IV Q3W x 9 cycles
Investigators Choice TherapyACTIVE_COMPARATORArm 3: Capecitabine (1000 or 1250 mg/m2 oral BID on Days 1 to 14, Q3W) for 8 cycles Pembrolizumab\* (200 mg IV on Day 1, Q3W) for 9 cycles Capecitabine (1000 or 1250 mg/m2 oral BID on Days 1 to 14, Q3W) for 8 cycles + pembrolizumab\* (200 mg IV on Day 1, Q3W) for 9 cycles \* Only participants who have received prior pembrolizumab in the neoadjuvant setting should receive pembrolizumab as part of their adjuvant therapy on Arm 3.
Investigator's Choice of Chemotherapy (ICC)ACTIVE_COMPARATORArm 2: If no prior taxane, or prior taxane in the (neo)adjuvant setting and DFI \> 12 months, paclitaxel or nab-paclitaxel If prior taxane and DFI ≤ 12 months: capecitabine, carboplatin, or eribulin.
Investigators Choice of Chemotherapy (ICC)ACTIVE_COMPARATORArm 2: ICC Capecitabine Gemcitabine Eribulin mesylate Vinorelbine
Interventions
NameTypeDescription
Dato-DXdDRUGAll participants will receive Dato-DXd (6 mg/kg IV on Day 1, Q3W; up to a maximum of 540 mg Q3W for participants ≥ 90 kg) until investigator-defined disease progression according to RECIST 1.1 or until unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation is met. Continued treatment with the same study drug post-progression may be allowed, based on prior discussion with sponsor/sponsor representative/study physician on a case-by-case basis following written investigator's confirmation of continuing clinical benefit to the patient post progression. The study is anticipated to enrol for an 18-month period, and DCO is expected to occur approximately 6 months after the last participant has been dosed.
DurvalumabDRUGProvided in 500mg vials. IV infusion. Experimental drug.
PaclitaxelDRUGIV infusion. Active comparator.
Nab-paclitaxelDRUGIV infusion. Active comparator.
GemcitabineDRUGIV infusion. Active comparator.
CarboplatinDRUGIV infusion. Active comparator.
PembrolizumabDRUGIV infusion. Active comparator.
DoxorubicinDRUGIV infusion Experimental/Active Comparator
EpirubicinDRUGIV Infusion Experimental/Active Comparator
CyclophosphamideDRUGIV infusion Experimental/Active Comparator
CapecitabineDRUGTablet Oral route of administration Experimental/Active Comparator
OlaparibDRUGTablet Oral route of administration Experimental/Active Comparator
Eribulin mesylateDRUGIV infusion. Active comparator
EribulinDRUGIV Infusion. Active comparator
VinorelbineDRUGIV Infusion. Active comparator
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites40

Inclusion Criteria: 1. Participant must be ≥ 18 years (and above legal age) at the time of screening. 2. Inoperable or metastatic HR-positive, HER2 IHC 0 breast cancer (per ASCO/CAP guidelines, on local laboratory results); ie, is documented as HR-positive (either ER and/or PgR positive \[ER or PgR...

Countries:United StatesChinaFranceItalySouth KoreaSpainArgentinaAustraliaBrazilCanadaGermanyHong KongIndiaJapanMexicoPhilippinesPolandSingaporeSouth AfricaTaiwanThailandTurkey (Türkiye)United KingdomVietnamAustriaBelgiumBulgariaHungaryMalaysiaSwitzerlandDenmarkGreecePuerto RicoSwedenNetherlandsRussia
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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, 2026NCT07205822primaryCompletionDate: changed
LOWMay 26, 2026NCT06103864primaryCompletionDate: changed
LOWMay 26, 2026NCT05374512primaryCompletionDate: changed
LOWMay 26, 2026NCT06112379primaryCompletionDate: changed
LOWMay 26, 2026NCT05629585primaryCompletionDate: changed
LOWMay 26, 2026NCT05104866primaryCompletionDate: changed
LOWMay 24, 2026NCT07205822studyFirstPostDate: changed
LOWMay 24, 2026NCT06103864studyFirstPostDate: changed
LOWMay 24, 2026NCT05374512studyFirstPostDate: changed
LOWMay 24, 2026NCT06112379studyFirstPostDate: changed
LOWMay 24, 2026NCT05629585studyFirstPostDate: changed
LOWMay 24, 2026NCT05104866studyFirstPostDate: changed