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Quemliclustat

Phase 3

Metastatic Pancreatic Ductal Adenocarcinoma | Small molecule | Oncology |Arcus Biosciences, Inc.|Last Updated: Sep 2, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment610

FDA Designations

No designations recorded

Clinical trial landscape

Quemliclustat · 3 trials · 3 indications

Phase 3 1Phase 2 1Phase 1 1
NCT06608927Study of Quemliclustat and Chemotherapy Versus Placebo and Chemotherapy in Patients With Metastatic Pancreatic Ductal AdenocarcinomaMetastatic Pancreatic Ductal Adenocarcinoma
ACTIVE NOT_RECRUITING610 Analytics
PHASE3ACTIVE NOT_RECRUITING
Study of Quemliclustat and Chemotherapy Versus Placebo and Chemotherapy in Patients With Metastatic Pancreatic Ductal Adenocarcinoma
Metastatic Pancreatic Ductal AdenocarcinomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Survival (OS)
Up to 72 months
Biochemical recurrence-free survival at 12-months
12 months

Biochemical recurrence is defined as a 0.2 ng/ml increase in PSA above the post-SBRT PSA nadir. Patient will be followed until biochemical recurrence, death, or end of study, whichever comes first. Patients who are alive and biochemical recurrence free will be censored at the last PSA measurement date.

Percentage of total radioactivity excreted in urine and feces
Up to 40 days
Total radioactivity in blood
Up to 40 days
Total radioactivity in plasma
Up to 40 days
Excretion of total radioactivity in urine
Up to 40 days
Excretion of total radioactivity in feces
Up to 40 days

Secondary Endpoints

Progression-free Survival (PFS) as determined by the Investigator according to RECIST v1.1
Up to 72 months
Objective response rate (ORR) as determined by the Investigator according to RECIST v1.1
Up to 72 months
Duration of response (DoR) as determined by the Investigator according to RECIST v1.1
Up to 72 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm A (Experimental Arm)EXPERIMENTALQuemliclustat, nab-paclitaxel and gemcitabine will be administered by IV infusion
Arm B (Comparator Arm)PLACEBO_COMPARATORPlacebo, nab-paclitaxel and gemcitabine will be administered by IV infusion
Treatment with quemliclustatm, etrumadenant, zimberelimab and SBRTEXPERIMENTALSubjects with metastatic prostate cancer will receive quemliclustat and etrumadenant for 4 weeks prior to metastasis-directed SBRT (Stereotactic Body Radiation Therapy). Within one week of completing SBRT, subjects will also start zimberelimab.
QuemliclustatEXPERIMENTALParticipants will receive a single dose of \[14C\]-quemliclustat through IV infusion.

Interventions

NameTypeDescription
QuemliclustatDRUGAdministered as specified in the treatment arm
PlaceboDRUGAdministered as specified in the treatment arm
Nab-paclitaxelDRUGAdministered as specified in the treatment arm
GemcitabineDRUGAdministered as specified in the treatment arm
EtrumadenantDRUG150 mg orally (PO) once a day (QD)
ZimberelimabDRUG240 mg IV once every two weeks starting within 1 week of completing metastasis-directed SBRT
Stereotactic Body Radiation TherapyRADIATIONStandard of care metastasis-directed hypofractionated radiotherapy treatment starting 4 weeks (+/- 1 week) of starting Etrumadenant and Quemliclustat
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites111

Inclusion Criteria: * Have histologically or cytologically confirmed PDAC that is metastatic. * Have not been previously treated for PDAC in the metastatic setting. 1. Prior neoadjuvant and/or adjuvant therapy for PDAC is permitted if completed at least 12 months before randomization. 2. Prior...

Countries:United StatesAustraliaAustriaBelgiumCanadaCzechiaFranceGermanyItalyJapanSouth KoreaSpainUnited Kingdom
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Recent Changes (Last 90 Days)

LOWSep 2, 2026NCT06608927lastUpdatePostDate: changed
LOWSep 2, 2026NCT06608927lastUpdatePostDate: changed
LOWSep 2, 2026NCT06608927lastUpdatePostDate: changed
LOWJul 31, 2026NCT06608927lastUpdatePostDate: changed
LOWJul 31, 2026NCT06608927lastUpdatePostDate: changed
LOWJul 2, 2026NCT06608927lastUpdatePostDate: changed
LOWJul 2, 2026NCT06608927lastUpdatePostDate: changed
LOWJul 2, 2026NCT06608927lastUpdatePostDate: changed

Frequently asked questions about Quemliclustat

What is Quemliclustat used for?

Quemliclustat is an investigational small molecule being studied for metastatic pancreatic ductal adenocarcinoma, oligometastatic prostate cancer, and in healthy participants for early-stage metabolism studies. It is not approved and remains in clinical development.

What does Quemliclustat target?

Quemliclustat is a small molecule enzyme inhibitor, classified under the -stat enzyme target class. It is being studied for its role in adenosine signaling modulation, which is relevant to its investigational use in cancer.

Who makes Quemliclustat?

Quemliclustat is being developed by Arcus Biosciences, Inc., a biopharmaceutical company traded on the NYSE under the ticker RCUS.

What phase is Quemliclustat in?

Quemliclustat is in Phase 1 clinical development. It is being studied in a completed Phase 1 metabolism trial in healthy participants, and is also part of later-stage trials in cancer indications, though the drug itself remains investigational.

What clinical trials is Quemliclustat in?

Quemliclustat is being studied in three trials: NCT05915442, a Phase 2 trial in oligometastatic prostate cancer; NCT06608927, a Phase 3 trial in metastatic pancreatic ductal adenocarcinoma; and NCT07364214, a completed Phase 1 trial in healthy participants.

Is Quemliclustat the same as ARC-24?

Quemliclustat is referred to as ARC-24 in the context of a Phase 1 metabolism, excretion, and mass balance study in healthy adult participants. The trial NCT07364214 is titled 'Metabolism, Excretion, and Mass Balance Study of Quemliclustat in Healthy Adult Participants (ARC-24)'.