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Sipuleucel-T

Phase 1

Prostate Cancer | Monoclonal antibody | Oncology |ImmunityBio, Inc.|Last Updated: Aug 10, 2026

Target and mechanism

Molecular targetACP3
Target classBinding Agent
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment30

FDA Designations

No designations recorded

Clinical trial landscape

Sipuleucel-T · 1 trial · 2 indications

Phase 1 1
NCT07756593Sipuleucel-T (Sip-T) in Combination With N-803 in Metastatic Androgen Pathway Modulation Resistant (mAPMR) Prostate CancerProstate Cancer
NOT YET_RECRUITING30 Analytics
PHASE1NOT YET_RECRUITING
Sipuleucel-T (Sip-T) in Combination With N-803 in Metastatic Androgen Pathway Modulation Resistant (mAPMR) Prostate Cancer
Prostate CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Frequency of dose-limiting toxicities (Cohort 1 only)
Start of treatment (day 1 dose of Sip-T) through 14 days following the last dose of N-803 (total time up to 44 days)

As assessed via CTCAE v6.0. Dose limiting toxicities will be evaluated according to protocol.

Recommended Phase II Dose (RP2D) (Cohort 1 only)
Start of treatment (day 1 dose of Sip-T) through 14 days following the last dose of N-803 for all participants in Cohort 1 (total time up to 44 days)

RP2D is defined as the highest dose of N-803 that has an overall DLT rate of less than 33% in total of 6 patients.

Number of severe (grade 3+) adverse events measured via CTCAE v6.0
Start of treatment through 100 days after last dose of N-803 (total time up to 137 days)
Number and type of adverse events measured via CTCAE v6.0
Start of treatment through 100 days after last dose of N-803 (total time up to 137 days)

Secondary Endpoints

PSA30 Response
Start of treatment to completion of follow-up (up to 26 months)
PSA50 Response
Start of treatment to completion of follow-up (up to 26 months)
PSA90 Response
Start of treatment to completion of follow-up (up to 26 months)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1: Dose level 0 Starting dose: N-803 + SIP-TEXPERIMENTALPatients will receive standard dose (\>50 million CD54+ cells) subcutaneous (SC) SIP-T on Day 1, 15 and 29 and 15 mcg/kg SC dose of N-803 24 hours after SIP-T on Day 2, 16, and 30.
Cohort 1: Dose level -1: N-803 + SIP-TEXPERIMENTALPatients will receive standard dose (\>50 million CD54+ cells) subcutaneous (SC) SIP-T on Day 1, 15 and 29 and 10 mcg/kg SC dose of N-803 24 hours after SIP-T on Day 2, 16, and 30.
Cohort 1: Dose level -2: N-803 + SIP-TEXPERIMENTALPatients will receive standard dose (\>50 million CD54+ cells) subcutaneous (SC) SIP-T on Day 1, 15 and 29 and 6 mcg/kg SC dose of N-803 24 hours after SIP-T on Day 2, 16, and 30.
Cohort 2: N-803 + SIP-TEXPERIMENTALPatients will receive standard dose (\>50 million CD54+ cells) subcutaneous (SC) SIP-T on Day 1, 15 and 29 and recommended phase 2 dose (RP2D) of N-803 24 hours after SIP-T on Day 2, 16, and 30. An additional dose of N-803 will occur on Day -5 or 5 days before first SIP-T dose.
Cohort 3: N-803 + SIP-TEXPERIMENTALPatients will receive standard dose (\>50 million CD54+ cells) subcutaneous (SC) SIP-T on Day 1, 15 and 29 and RP2D of N-803 24 hours after SIP-T on Day 2, 16, and 30. An additional dose of N-803 will occur on Day 37.

Interventions

NameTypeDescription
Sipuleucel-TBIOLOGICALSipuleucel-T is a cellular therapeutic vaccine given in 3 complete doses at 2-week intervals intravenously.
N803BIOLOGICALN-803 is a biologic that is administered subcutaneously in the abdominal area.
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Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Histologically or cytologically confirmed prostate adenocarcinoma. * Imaging- or biopsy-proven metastatic disease. May have any type or location of metastases (bone, lymph node, visceral). * Prior treatment must include either orchiectomy or luteinizing hormone-releasing agoni...

Countries:United States
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Competitive Landscape -Prostate Cancer 254 trials

Recent Changes (Last 90 Days)

LOWAug 11, 2026NCT07756593NEW_TRIAL: changed
LOWAug 11, 2026NCT07756593NEW_TRIAL: changed
LOWAug 11, 2026NCT07756593NEW_TRIAL: changed

Frequently asked questions about Sipuleucel-T

What is Sipuleucel-T used for in prostate cancer?

Sipuleucel-T is an investigational monoclonal antibody being studied for the treatment of prostate cancer, specifically in combination with N-803 for metastatic androgen pathway modulation resistant (mAPMR) prostate cancer. It is currently in Phase 1 clinical development and has not been approved by the FDA.

Who makes Sipuleucel-T?

Sipuleucel-T is being developed by ImmunityBio, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol IBRX. The company is conducting a Phase 1 clinical trial of Sipuleucel-T in combination with N-803 for metastatic prostate cancer.

What phase is Sipuleucel-T in?

Sipuleucel-T is currently in Phase 1 clinical development. It is an investigational drug and has not received FDA approval. The ongoing Phase 1 trial is studying Sipuleucel-T in combination with N-803 for metastatic androgen pathway modulation resistant prostate cancer.

What clinical trials is Sipuleucel-T in?

Sipuleucel-T is being studied in one Phase 1 clinical trial with the identifier NCT07756593. The trial is titled 'Sipuleucel-T (Sip-T) in Combination With N-803 in Metastatic Androgen Pathway Modulation Resistant (mAPMR) Prostate Cancer' and is expected to enroll 30 male participants aged 18 years and older in the United States.

Is Sipuleucel-T the same as Sip-T?

Yes, Sipuleucel-T is also referred to as Sip-T in clinical trial documentation. The Phase 1 trial NCT07756593 uses the abbreviation Sip-T to refer to Sipuleucel-T when describing the combination therapy with N-803 for metastatic prostate cancer.