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ZN-c5

Phase 1

Breast Cancer | Small molecule | Oncology |Zentalis Pharmaceuticals, Inc.|Last Updated: Aug 9, 2024

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials3
Total Enrollment230

FDA Designations

No designations recorded

Clinical trial landscape

ZN-c5 · 4 trials · 2 indications

Phase 1 4
NCT04514159A Study of ZN-c5 and Abemaciclib in Participants With Breast CancerBreast Cancer
COMPLETED14 Analytics
NCT04561752A Food Effect Study With ZN-c5 in Healthy Post-Menopausal SubjectsHealthy
COMPLETED20 Analytics
NCT04176757A Study of ZN-c5 in Participants With Breast CancerBreast Cancer
COMPLETED35 Analytics
NCT03560531A Study of ZN-c5 in Subjects With Breast CancerBreast Cancer
COMPLETED181 Analytics
PHASE1COMPLETED
A Study of ZN-c5 and Abemaciclib in Participants With Breast Cancer
Breast CancerUnlock trial analytics
PHASE1COMPLETED
A Food Effect Study With ZN-c5 in Healthy Post-Menopausal Subjects
HealthyUnlock trial analytics
PHASE1COMPLETED
A Study of ZN-c5 in Participants With Breast Cancer
Breast CancerUnlock trial analytics
PHASE1COMPLETED
A Study of ZN-c5 in Subjects With Breast Cancer
Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence and severity of adverse events from ZN-c5 in combination with abemaciclib
Through study completion, anticipated to be 21 months

Measured by the number of treatment-emergent adverse events and graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v5.0

AUC0-t
Days 1-4

Area under the plasma concentration-time curve (AUC) from time zero to the last sampling time

Cmax
Days 1-4

Maximum concentration

Tmax
Days 1-4

Time to maximum concentration

AUC0-infinity
Days 1-4

Area under the plasma concentration-time curve (AUC) from time zero to infinity

Corroborate the single agent Recommended Phase 2 Dose
Throughout the study, an average of 15 months
Clinical Benefit Rate (CBR) for ZN-c5 as a Monotherapy
24 weeks

CBR is defined as the number of participants who have at least 1 confirmed response of complete response (CR) or partial response (PR) (only if participant has measurable disease), or stable disease (SD) \>= 24 weeks (or non-CR/non-progressive disease (PD) \>=24 weeks for participants with non-measurable disease) prior to any evidence of progression.

Best Overall Response (BOR) for ZN-c5 as a Monotherapy
24 weeks

Best overall response was summarized categorically based on the four RECIST categories: CR, PR, SD and PD.

Secondary Endpoints

Determine tumor responses to combination treatment
Through study completion, anticipated to be 21 months
Assess the incidence, frequency, and severity of treatment-emergent adverse events (TEAEs)
Approximately 45 days
Dose-biomarker relationship
Throughout the study, an average of 15 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ZN-c5 + abemaciclib combination therapyEXPERIMENTALParticipants will take abemaciclib (150mg) orally twice a day and ZN-c5 (dose escalation) orally once or twice a day to determine the safety, tolerability, and maximum tolerated dose (MTD) or recommended Phase 2 dose (RP2D).
Treatment Sequence A-BEXPERIMENTALParticipants will take ZN-c5 (150mg), single dose, under fasted conditions, and a week later, will take the same drug under fed conditions to determine the comparative bioavailability of ZN-c5 under these conditions.
Treatment Sequence B-AEXPERIMENTALParticipants will take ZN-c5 (150mg), single dose, under fed conditions, and a week later, will take the same drug under fasted conditions to determine the comparative bioavailability of ZN-c5 under these conditions.
ZN-c5EXPERIMENTAL -
ZN-c5 monotherapyEXPERIMENTALDose escalation cohorts are planned to determine maximum tolerated dose(MTD) or recommended phase 2 dose (RP2D) of ZN-c5 as well as expansion cohorts and a Phase 2 cohort.
ZN-c5 + palbociclib combination therapyEXPERIMENTALDose escalation cohorts are planned to determine maximum tolerated dose(MTD) or recommended phase 2 dose (RP2D) of ZN-c5 in combination with palbociclib as well as a Phase 2 cohort.

Interventions

NameTypeDescription
ZN-c5DRUGZN-c5 is the study drug.
AbemaciclibDRUGAbemaciclib (VERZENIO®) is an approved drug.
PalbociclibDRUGPalbociclib (IBRANCE®) is an approved drug
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: * Age ≥ 18 years of age * Women can be peri- or postmenopausal, as defined by at least one of the following: * Age ≥ 60 years; * Age \< 60 years and cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause; and s...

Countries:United StatesPolandNew ZealandAustraliaBosnia and HerzegovinaBelarusCzechiaHungaryLithuaniaRussiaSerbiaUkraine
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Competitive Landscape -Breast Cancer 402 trials

Top 20 of 92 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant
BeOne Medicines Ltd. Sponsored ADRONC5PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Relay Therapeutics, Inc.RLAY2PHASE3Zovegalisib, Capivasertib, Fulvestrant
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
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam
Atossa Therapeutics, Inc.ATOS1PHASE2endoxifen, goserelin
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Frequently asked questions about ZN-c5

What is ZN-c5 used for?

ZN-c5 is an investigational small molecule being studied for the treatment of breast cancer. It is also being evaluated in healthy post-menopausal subjects in a food effect study. ZN-c5 is currently in Phase 1 clinical development and is not yet approved by regulatory authorities.

Who makes ZN-c5?

ZN-c5 is being developed by Zentalis Pharmaceuticals, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol ZNTL. The company is conducting Phase 1 clinical trials of ZN-c5 in breast cancer and healthy subjects.

What phase is ZN-c5 in?

ZN-c5 is in Phase 1 clinical development. All four clinical trials listed for ZN-c5 are Phase 1 studies, and all have been completed. ZN-c5 is an investigational drug and has not received FDA approval.

What clinical trials is ZN-c5 in?

ZN-c5 has been studied in four completed Phase 1 clinical trials. These include NCT03560531 and NCT04176757 in breast cancer, NCT04514159 combining ZN-c5 with abemaciclib in breast cancer, and NCT04561752, a food effect study in healthy post-menopausal women.

Is ZN-c5 the same as any other drug?

ZN-c5 is a distinct investigational small molecule developed by Zentalis Pharmaceuticals. It is not known to be the same as any other approved drug. It is being studied as a monotherapy and in combination with abemaciclib for breast cancer.