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BNT324

Phase 3

Metastatic Castration-resistant Prostate Cancer | Small molecule | Oncology |BioNTech SE|Trials Updated: Oct 21, 2026

BNT324 development status

Highest phase Phase 3
Registered trials 3 across 2 sponsors since Jun 2023

BNT324 target and mechanism

ModalitySmall molecule

Also known as anti-B7-H3 antibody conjugated to topoisomerase I inhibitor, DB-1311

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials4
Total Enrollment2,642

FDA Designations

FAST_TRACK

BNT324 clinical trials

BNT324 · 4 trials · 4 indications

Phase 3 1Phase 2 1Phase 1 2
NCT07365995A Phase III Trial of BNT324 Versus Docetaxel in Metastatic Castration-resistant Prostate CancerMetastatic Castration-resistant Prostate Cancer
RECRUITING736 Analytics
PHASE3RECRUITING
A Phase III Trial of BNT324 Versus Docetaxel in Metastatic Castration-resistant Prostate Cancer
Metastatic Castration-resistant Prostate CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

rPFS assessed by BICR
From randomization to end of study, i.e., up to 58 months

By arm. rPFS is defined as time from randomization to radiographic disease progression per Prostate Cancer Working Group 3 (PCWG3)-modified Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) criteria, or death from any cause, whichever occurs first.

OS
From randomization to end of study, i.e., up to 58 months

By arm. OS is defined as time from randomization to death from any cause.

Part 1: Number of participants with Dose Limiting Toxicities (DLTs).
During the DLT evaluation period, i.e., the time of initiation of the first dose of investigational medicinal product (IMP) up to 21 days
Part 1: Treatment-emergent adverse events (TEAEs) and treatment-emergent serious AE (TESAEs)
up to follow up period, e.g. up to 72 months.
Part 2: Treatment-emergent adverse events (TEAEs) and treatment-emergent serious AE (TESAEs) [By arm and dose level]
From the time of initiation of the first dose of IMP to end of study, i.e., up to 72 months
Part 2: Objective response rate (ORR), defined as the proportion of participants in whom a confirmed Complete response (CR) or PR is observed as best overall response (per RECIST 1.1 based on the investigator's assessment)by arm and dose level.
From the time of initiation of the first dose of IMP to end of study, i.e., up to 72 months
Part 1 - Occurrence of dose limiting toxicities (DLTs) by dose level
During the DLT evaluation period, i.e., the time of initiation of the first dose of investigational medicinal product (IMP) up to 21 days]
Part 1 - Occurrence of Treatment-emergent adverse events (TEAEs), serious TEAEs, treatment-related TEAEs, and treatment-related serious TEAEs by dose level
From the time of the first dose of IMP to 90 days after the last IMP dose or until new anticancer therapy is started, whichever occurs first
Part 1 - Occurrence of dose interruption, reduction, and treatment discontinuations due to TEAEs by dose level
From the time of the first dose of IMP to 90 days after the last dose of IMP or until new anticancer therapy is started, whichever occurs first
Part 2 cohorts 1 and 2 - Occurrence of TEAEs, serious TEAEs, treatment-related TEAEs, and treatment-related serious TEAEs by cohort and treatment arm
From the time of the first dose of IMP to 90 days after the last IMP dose or until new anticancer therapy is started, whichever occurs first
Part 2 cohorts 1 and 2 - Occurrence of dose interruption, reduction, and treatment discontinuation due to TEAEs by cohort and treatment arm
From the time of the first dose of IMP to 90 days after the last IMP dose or until new anticancer therapy is started, whichever occurs first
Part 2 cohorts 1 and 2 - Objective response rate (ORR) by cohort and treatment arm
From the time of initiation of the first dose of IMP to end of study, i.e., up to 87 months

ORR defined as the proportion of participants in whom a confirmed complete response (CR) or partial response (PR) is observed as best overall response (per response evaluation criteria in solid tumors \[RECIST\] version 1.1 based on the investigator's assessment).

Part 2 cohorts 3-7 - ORR by cohort
From the time of initiation of the first dose of IMP to end of study, i.e., up to 87 months

ORR, defined as the proportion of participants in whom a confirmed CR or PR is observed as best overall response (per RECIST version 1.1 based on the investigator's assessment).

Phase 1: Percentage of Participants with Dose-Limiting Toxicities (DLTs) as assessed by Common Terminology Criteria for Adverse Events (CTCAE) v5.0. Percentage of participants in Part 1 with DLTs
up to 21 days after Cycle 1 Day 1

Percentage of participants in Part 1 with DLTs

Phase 1& Phase 2a: Percentage of Participants with Treatment Emergent Adverse Events (TEAEs) as assessed by CTCAE v5.0.
Up to follow-up period, approximately 1 year post-treatment

Percentage of participants with TEAEs graded according to National Cancer Institute (NCI) CTCAE v5.0

Phase 1& Phase 2a: Percentage of Participants with Serious Adverse Events (SAEs) as assessed by CTCAE v5.0.
Up to follow-up period, approximately 1 year post-treatment

Percentage of Participants with SAEs graded according to NCI CTCAE v5.0

Phase 1 & Phase 2a: vital sign measurements
Up to follow-up period, approximately 1 year post-treatment
Phase 1& Phase 2a: clinical safety laboratory parameters
Up to follow-up period, approximately 1 year post-treatment
Phase 1& Phase 2a: Electrocardiogram (ECG) parameters
Up to follow-up period, approximately 1 year post-treatment
Phase 1& Phase 2a: Eastern Cooperative Oncology Group (ECOG) performance status (PS)
Up to follow-up period, approximately 1 year post-treatment
Phase 1& Phase 2a: left ventricular ejection fraction (LEVF)
Up to follow-up period, approximately 1 year post-treatment
Phase 1: Maximum Tolerated Dose (MTD) of DB-1311/BNT324
Up to the completion of Part 1 (assessed up to 12 months)

MTD on the data collected during Part 1

Phase 1: Recommended Phase 2 Dose (RP2D) of DB-1311/BNT324
Up to the completion of Part 1 (assessed up to 12 months)

RP2D of DB-1311/BNT324 based on the data collected during Part 1

Phase 2a: Objective Response Rate (ORR) as determined by investigator
Up to follow-up period, approximately 1 year post-treatment

Objective Response Rate (ORR) as determined by investigator per RECIST 1.1 in non-PC/non-GBM participants per RECIST v1.1 for soft tissue and Prostate Cancer Working Group 3 (PCWG3) criteria for bone metastases in PC participants, and ORR per neuro-oncology 2.0 (RANO 2.0) criteria in GBM participants.

Secondary Endpoints

Time to first subsequent therapy (TFTS)
From randomization to end of study, i.e., up to 58 months
Objective response rate (ORR)
From randomization to end of study, i.e., up to 58 months
Duration of response (DOR)
From randomization to end of study, i.e., up to 58 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
BNT324EXPERIMENTAL -
Docetaxel plus prednisone/ prednisoloneACTIVE_COMPARATOR -
Part 1 Cohort 1A, DB-1311/BNT324+ BNT327 combination therapyEXPERIMENTALEscalating combination dose levels of DB-1311/BNT324 and BNT327 to define RP2D (Recommended Phase 2 Dose) and RP2D-1 in target population.
Part 1 Cohort 2, DB-1311/BNT324+ DB-1305 /BNT325 combination therapyEXPERIMENTALEscalating combination dose levels of DB-1311/BNT324 and DB-1305/BNT325 to define RP2D and RP2D-1 in target population.
Part 2 Arm 1: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic HCC
Part 2 Arm 2: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/ metastatic CC
Part2 Arm 3:RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic melanoma
Part 2 Arm 4: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with recurrent/metastatic HNSCC
Part 2 Arm 5: RP2D of DB-1311/BNT324 +DB-1305/BNT325 and RP2D-1 of DB-1311/BNT324 +DB-1305/BNT325EXPERIMENTALIn participants with advanced/unresectable metastatic NSCLC
Part 1 Cohort 1B, DB-1311/BNT324+ BNT327 combination therapyEXPERIMENTALEscalating combination dose levels of DB-1311/BNT324 and BNT327 to define RP2D and RP2D-1 in target population.
Part 2 Arm 6: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic PSOC
Part 2 Arm 7: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic PDAC
Part 2 Arm 8: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic breast cancer
Part 2 Arm 9: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic CRC
Part 2 Arm 10: RP2D of DB-1311/BNT324 + BNT327EXPERIMENTALIn participants with unresectable advanced/metastatic mCRPC
Part 1 - BNT324 + BNT327 combination therapyEXPERIMENTALEscalating combination dose levels of BNT324 and BNT327 to define RP2D and RP2D-1 for NSCLC and SCLC.
Part 2 - Cohort 1: RP2D of BNT324 + BNT327 and RP2D-1 of BNT324 + BNT327EXPERIMENTALIn subpopulation 1 of NSCLC actionable oncogenic alteration (AGA) negative, first-line (1L)
Part 2 - Cohort 2: RP2D of BNT324 + BNT327 and RP2D-1 of BNT324 + BNT327EXPERIMENTALIn SCLC, second-line plus (2L+)
Part 2 - Cohort 3: RP2D of BNT324 + BNT327EXPERIMENTALIn subpopulation 1 of NSCLC AGA negative, 2L+
Part 2 - Cohort 4: RP2D of BNT324 + BNT327EXPERIMENTALIn subpopulation 2 of NSCLC AGA negative, 1L
Part 2 - Cohort 5: RP2D of BNT324 + BNT327EXPERIMENTALIn subpopulation 2 of NSCLC AGA negative, 2L+
Part 2 - Cohort 6: RP2D of BNT324 + BNT327EXPERIMENTALIn NSCLC AGA positive
Part 2 - Cohort 7: RP2D of BNT324 + BNT327EXPERIMENTALIn SCLC, 1L
DB-1311/BNT324 Dose Level 1EXPERIMENTALEnrolled Subjects will receive a single-dose of DB-1311/BNT324 at Dose Level 1 on Day 1 of each cycle Q3W (every 3 weeks)
DB-1311/BNT324 Dose Level 2EXPERIMENTALEnrolled Subjects will receive a single-dose of DB-1311/BNT324 at Dose Level 2 on Day 1 of each cycle Q3W
DB-1311/BNT324 Dose Level 3EXPERIMENTALEnrolled Subjects will receive a single-dose of DB-1311/BNT324 at Dose Level 3 on Day 1 of each cycle Q3W
DB-1311/BNT324 Dose Level 4EXPERIMENTALEnrolled Subjects will receive a single-dose of DB-1311/BNT324 at Dose Level 4 on Day 1 of each cycle Q3W
DB-1311/BNT324 Dose Level 5EXPERIMENTALEnrolled Subjects will receive a single-dose of DB-1311/BNT324 at Dose Level 5 on Day 1 of each cycle Q3W
DB-1311/BNT324 Dose Expansion 1EXPERIMENTALSubjects with advanced/unresectable, or metastatic SCLC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324 randomized at dose level 1 or 2.
DB-1311/BNT324 Dose Expansion 2EXPERIMENTALSubjects with advanced/unresectable, or metastatic NSCLC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324 randomized at dose level 1 or 2.
DB-1311/BNT324 Dose Expansion 3EXPERIMENTALSubjects with advanced/unresectable, or metastatic ESCC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 4EXPERIMENTALSubjects with advanced/unresectable, or metastatic CRPC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324 randomized at dose level 1 or 2.
DB-1311/BNT324 Dose Expansion 5EXPERIMENTALSubjects with advanced/unresectable, or metastatic melanoma who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 6EXPERIMENTALSubjects with advanced/unresectable, or metastatic HCC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 7EXPERIMENTALSubjects with advanced/unresectable, or metastatic cervical cancer who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 8EXPERIMENTALSubjects with other advanced or metastatic solid tumors who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 9EXPERIMENTALSubjects with advanced/unresectable, or metastatic HNSCC (not including nasopharyngeal carcinoma \[NPC\]) who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 10EXPERIMENTALSubjects with advanced or metastatic rare tumor types who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 11EXPERIMENTALSubjects with metastatic CRPC who have progressed on or after standard systemic treatments including no more than 2 lines of systemic chemotherapy, novel hormone therapy and lutetium-177 radioligand therapy, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 12EXPERIMENTALTaxane-naive subjects with metastatic CRPC who have progressed on or after novel hormone therapy, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 13EXPERIMENTALSubjects with advanced/unresectable, or metastatic HNSCC (not including NPC) who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324.
DB-1311/BNT324 Dose Expansion 14EXPERIMENTALSubjects with epithelial OC who have had 1-3 prior lines of systemic treatment and are platinum-resistant, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324 randomized at dose level 1 or 2.
DB-1311/BNT324 Dose Expansion 15EXPERIMENTALSubjects with Subjects with advanced/unresectable, or metastatic melanoma, ESCC, PROC and CC who have progressed on or after standard systemic treatments, a 21-day treatment cycle (i.e., once every 3 weeks) via IV will be used for DB-1311/BNT324. Lopinavir and ritonavir/ Itraconazole will be administered orally twice a day/ once a day.
DB-1311/BNT324 Dose Expansion 16EXPERIMENTALTaxane-naive subjects with metastatic CRPC who have progressed on or after NHT, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324, combined with enzalutamide 160mg QD orally.
DB-1311/BNT324 Dose Expansion 17EXPERIMENTALTaxane-naive subjects with metastatic CRPC who have progressed on or after NHT, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324, combined with abiraterone 1000mg QD orally.
DB-1311/BNT324 Dose Expansion 18EXPERIMENTALCSPC subjects with suboptimal PSA response to ADT/NHT, a 21-day treatment cycle (i.e., once every 3 weeks) via intravenous infusion will be used for DB-1311/BNT324, combined with enzalutamide 160mg or abiraterone 1000mg QD orally.

Interventions

NameTypeDescription
BNT324DRUGIntravenous infusion
DocetaxelDRUGIntravenous infusion
Prednisone/prednisoloneDRUGOral
DB-1311/BNT324DRUGAdministered I.V.
BNT327DRUGAdministered I.V.
DB-1305/BNT325DRUGAdministered I.V.
DB-1311DRUGAdministered I.V.(intravenous infusion)
Lopinavir and Ritonavir TabletsDRUGLopinavir and Ritonavir Tablets
itraconazoleDRUGitraconazole
EnzalutamideDRUGoral administration
AbirateroneDRUGoral administration
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Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites52

Key Inclusion Criteria: * Are male adults (defined as ≥18 years of age or of an acceptable age according to local regulations at the time of giving informed consent). * Must have documented progressive prostate cancer based on at least one of the following criteria: * Serum/plasma PSA progressio...

Countries:United StatesAustraliaBelgiumChinaGermanyPolandUnited KingdomTaiwanFranceItalySpainTurkey (Türkiye)
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Recent Changes (Last 90 Days)

LOWOct 21, 2026NCT05914116lastUpdatePostDate: changed
LOWOct 21, 2026NCT05914116lastUpdatePostDate: changed
LOWOct 21, 2026NCT05914116lastUpdatePostDate: changed
LOWOct 16, 2026NCT07365995lastUpdatePostDate: changed
LOWOct 16, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 19, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 19, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 19, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 2, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 2, 2026NCT07365995lastUpdatePostDate: changed
LOWSep 2, 2026NCT07365995lastUpdatePostDate: changed
LOWAug 26, 2026NCT06892548lastUpdatePostDate: changed
LOWAug 26, 2026NCT06892548lastUpdatePostDate: changed

Frequently asked questions about BNT324

What is BNT324?

BNT324 is an investigational oncology therapy being developed by BioNTech SE for advanced solid tumors, including advanced lung cancer and metastatic castration-resistant prostate cancer. It is an antibody-drug conjugate, specifically an anti-B7-H3 antibody conjugated to a topoisomerase I inhibitor. It is in clinical development and has not been approved.

What does BNT324 target?

BNT324 targets B7-H3. It is an antibody-drug conjugate in which an anti-B7-H3 antibody is conjugated to a topoisomerase I inhibitor, so the antibody directs the payload toward B7-H3-expressing cells. B7-H3 is the molecular target of the antibody component.

Who makes BNT324?

BNT324 is developed by BioNTech SE, which trades under the ticker BNTX. The asset is also known as DB-1311, and the combined designation DB-1311/BNT324 appears in study titles, reflecting the anti-B7-H3 antibody conjugated to a topoisomerase I inhibitor.

What phase is BNT324 in?

BNT324 is in Phase 1 development overall, with a Phase 3 trial also recruiting. The Phase 3 study, NCT07365995, compares BNT324 with docetaxel in metastatic castration-resistant prostate cancer. BNT324 is investigational and is not approved; it remains in clinical development across its programs.

What clinical trials is BNT324 in?

BNT324 is being studied in four recruiting trials: NCT07365995, a Phase 3 trial versus docetaxel in metastatic castration-resistant prostate cancer; NCT06953089, a Phase 2 combination study in advanced solid tumors; NCT06892548, a Phase 1 combination with BNT327 in advanced lung cancer; and NCT05914116, a Phase 1/2a study in advanced solid tumors.

Is BNT324 the same as DB-1311?

Yes. BNT324 is also known as DB-1311, and the two names are combined as DB-1311/BNT324 in some study titles. It is described as an anti-B7-H3 antibody conjugated to a topoisomerase I inhibitor. Searches for DB-1311 refer to the same investigational asset developed by BioNTech SE.