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PRT2527

Phase 1

Aggressive B-Cell Non-Hodgkin's Lymphoma (NHL) | Small molecule | Oncology |Prelude Therapeutics Incorporated|Last Updated: Jan 26, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment86

FDA Designations

No designations recorded

Clinical trial landscape

PRT2527 · 2 trials · 17 indications

Phase 1 2
NCT05665530A Study of PRT2527 as Monotherapy and in Combination With Zanubrutinib or Venetoclax in Participants With R/R Hematologic MalignanciesAggressive B-Cell Non-Hodgkin's Lymphoma (NHL)
COMPLETED86 Analytics
NCT05159518A Study of PRT2527 in Participants With Advanced Solid TumorsSarcoma
COMPLETED30 Analytics
PHASE1COMPLETED
A Study of PRT2527 as Monotherapy and in Combination With Zanubrutinib or Venetoclax in Participants With R/R Hematologic Malignancies
Aggressive B-Cell Non-Hodgkin's Lymphoma (NHL)Unlock trial analytics
PHASE1COMPLETED
A Study of PRT2527 in Participants With Advanced Solid Tumors
SarcomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Dose limiting toxicity (DLT) of PRT2527
Baseline through Day 21, 28, or 35 days.

Dose limiting toxicities will be evaluated during Cycle 1 depending on the treatment arm and intrapatient ramp-up.

Safety and tolerability of PRT2527 monotherapy and in combination with zanubrutinib or venetoclax: AEs, CTCAE Assessments
Baseline through approximately 2 years

Safety and tolerability will be evaluated by incidence of DLTs, dose interruption, modification, and discontinuation due to adverse events (AEs) according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE)

Maximum tolerated dose (MTD)/Recommended phase 2 dose (RP2D) of PRT2527 monotherapy and in combination with zanubrutinib or venetoclax
Baseline through approximately 2 years

The MTD/RP2D will be established for further investigation in participants with relapsed or refractory hematologic malignancies

Dose limiting toxicities (DLT) of PRT2527
Baseline through Day 21

Dose limiting toxicities will be evaluated over the 21-day observation period

Maximally tolerated dose (MTD) of PRT2527
Baseline through approximately 1 year

The MTD will be established for further investigation in participants with advanced solid tumors

Recommended phase 2 dose (RP2D) and schedule of PRT2527
Baseline through approximately 1 year

The RP2D will be established for further investigation in participants with advanced solid tumors

Secondary Endpoints

Anti-tumor activity of PRT2527 as monotherapy and in combination with zanubrutinib or venetoclax: Objective response rate (ORR)
Baseline through approximately 2 years
Anti-tumor activity of PRT2527 monotherapy and in combination with zanubrutinib or venetoclax: Duration of response/Complete Response (DOR/DoCR)
Baseline through approximately 2 years
Pharmacokinetic profile of PRT2527 monotherapy and in combination with zanubrutinib or venetoclax: Maximum observed plasma concentration
Baseline through approximately 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PRT2527 Monotherapy in Lymphoid MalignanciesEXPERIMENTALPRT2527 will be administered by intravenous infusion once weekly at the dose level assigned during the dose escalation phase and at the defined RP2D dose for indication-specific cohorts during the dose confirmation phase.
PRT2527/Zanubrutinib Combination in Lymphoid MalignanciesEXPERIMENTALPRT2527 will be administered by intravenous infusion once weekly at the dose level assigned during the dose escalation phase and at the defined RP2D dose for indication specific cohort during the dose confirmation phase. Zanubrutinib will be administered orally as combination therapy once or twice daily.
PRT2527 Monotherapy in Myeloid MalignanciesEXPERIMENTALPRT2527 will be administered by intravenous infusion once weekly at the dose level assigned during the dose escalation phase and at the defined RP2D dose for indication-specific cohorts during the dose confirmation phase.
PRT2527/Venetoclax Combination in Myeloid MalignanciesEXPERIMENTALPRT2527 will be administered by intravenous infusion once weekly at the dose level assigned during the dose escalation phase and at the defined RP2D dose for indication specific cohort during the dose confirmation phase. Venetoclax will be administered orally as a combination therapy once daily.
PRT2527EXPERIMENTALPRT2527 will be administered by intravenous infusion

Interventions

NameTypeDescription
PRT2527DRUGPRT2527 will be administered by intravenous infusion once weekly.
ZanubrutinibDRUGZanubrutinib will be provided in capsules for oral administration once or twice daily.
VenetoclaxDRUGVenetoclax will be provided in tablet for oral administration once daily
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites24

Inclusion Criteria: * Willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures * Histologically or cytologically confirmed diagnosis of aggressive B-cell lymphoma subtypes, MCL, MZL, or CLL/SLL (including Richter's ...

Countries:United StatesAustraliaCanadaFranceGermanyItalyPolandSouth KoreaSwitzerlandUnited Kingdom
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Frequently asked questions about PRT2527

What is PRT2527 used for?

PRT2527 is an investigational small molecule being studied for aggressive B-Cell Non-Hodgkin's Lymphoma (NHL) and sarcoma. It has also been evaluated in other advanced solid tumors and hematologic malignancies, including chronic lymphocytic leukemia, mantle cell lymphoma, and acute myeloid leukemia, though these are not the primary focus.

What does PRT2527 target?

PRT2527 is a small molecule oncology drug. The specific molecular target has not been disclosed in available clinical trial information. It is being studied across multiple tumor types, suggesting a potentially broad mechanism of action relevant to cancer cell biology.

Who is developing PRT2527?

PRT2527 is being developed by Prelude Therapeutics Incorporated, a biopharmaceutical company traded on NASDAQ under the ticker PRLD. The company is conducting clinical trials of PRT2527 in oncology indications.

What phase is PRT2527 in?

PRT2527 is in Phase 1 clinical development. Two Phase 1 trials have been completed, one in advanced solid tumors and one in hematologic malignancies. The drug remains investigational and has not been approved by regulatory authorities.

What clinical trials is PRT2527 in?

PRT2527 has been studied in two completed Phase 1 trials. NCT05159518 evaluated PRT2527 in participants with advanced solid tumors including sarcoma. NCT05665530 studied PRT2527 as monotherapy and in combination with zanubrutinib or venetoclax in participants with relapsed or refractory hematologic malignancies.

Is PRT2527 the same as any other drug?

PRT2527 is the sole name used for this investigational drug in clinical trial registrations. No alternative names or aliases have been identified in the available information, so it is not known to be the same as any other marketed or investigational compound.