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BAY3375968

Phase 1

Advanced Solid Tumors | Small molecule | Oncology |Bayer AG|Last Updated: Jul 7, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment129

FDA Designations

No designations recorded

Clinical trial landscape

BAY3375968 · 1 trial · 1 indication

Phase 1 1
NCT05537740A First-in-human Study to Learn How Safe the Study Drug BAY3375968, an Anti-CCR8 Antibody, is, When Given Alone or in Combination With Pembrolizumab, How it Affects the Body, How it Moves Into, Through, and Out of the Body, and to Find the Best Dose in Participants With Advanced Solid TumorsAdvanced Solid Tumors
ACTIVE NOT_RECRUITING129 Analytics
PHASE1ACTIVE NOT_RECRUITING
A First-in-human Study to Learn How Safe the Study Drug BAY3375968, an Anti-CCR8 Antibody, is, When Given Alone or in Combination With Pembrolizumab, How it Affects the Body, How it Moves Into, Through, and Out of the Body, and to Find the Best Dose in Participants With Advanced Solid Tumors
Advanced Solid TumorsUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with treatment-emergent adverse events (TEAEs) categorized by severity
First administration of study treatment up to 90 days after the last dose of study treatment
Maximum tolerated dose (MTD) or Maximum administered dose (MAD)
Up to 21 days
Number of participants experiencing dose-limiting toxicity (DLTs) at each dose level in the dose-escalation part of the study
Up to 21 days
Recommended dose for expansion (RDE)
Approximately 34 months
Peak plasma concentration after drug administration (Cmax) of BAY3375968
Up to 21 days after first drug administration
Area under the concentration-time curve (AUC) of BAY3375968
Up to 21 days after first drug administration

Secondary Endpoints

Objective response rate (ORR)
From start of treatment up to end of safety follow-up (90 days (±7 days) after the last administration of study treatment)
Fold change in serum IFN (Interferon)-γ in on-treatment compared with baseline serum samples
Approximately 60 months
Fold change in intratumor CD8+ T cell/Treg ratio in on-treatment compared with baseline tumor biopsies
Approximately 60 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose escalation - Arm 1AEXPERIMENTALDose escalation of BAY3375968 as monotherapy
Dose escalation - Arm 1BEXPERIMENTALDose escalation of BAY 3375968 in combination with pembrolizumab
Dose expansion - Arm 2AEXPERIMENTALBAY3375968 monotherapy-mode-of-action (monotherapy-MoA) expansion in subjects with one of the following tumor types: NSCLC, TNBC, HNSCC, or melanoma. The tumors should have primary (ICI-refractory) or secondary (ICI-relapsed) resistance to prior ICI-therapy. The final decision on the enrolled tumor type is at the discretion of the Sponsor.
Dose expansion - Arm 2BEXPERIMENTALDisease-specific combination expansion with separate cohorts in ICI-relapsed tumor types (NSCLC, TNBC, HNSCC, gastric cancer, or melanoma)

Interventions

NameTypeDescription
BAY3375968DRUGIntravenous (IV) infusion
PembrolizumabDRUGIV infusion
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites26

Inclusion Criteria: * Capable of giving signed informed consent. * Has received, been intolerant to, or been ineligible for all treatment options proven to confer clinical benefit. * Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. * Eastern Cooperative Oncology Gro...

Countries:United StatesBelgiumCanadaChinaFranceSingaporeSpainUnited Kingdom
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Competitive Landscape -Other Solid Tumors 9 trials (matched to "Advanced Solid Tumors")

Recent Changes (Last 90 Days)

LOWJul 7, 2026NCT05537740lastUpdatePostDate: changed
LOWJul 7, 2026NCT05537740lastUpdatePostDate: changed

Frequently asked questions about BAY3375968

What is BAY3375968 used for in advanced solid tumors?

BAY3375968 is an investigational anti-CCR8 antibody being studied for the treatment of advanced solid tumors. It is currently in Phase 1 clinical development, where it is being evaluated alone and in combination with pembrolizumab to assess its safety, how it affects the body, and to determine the best dose.

What does BAY3375968 target?

BAY3375968 targets CCR8, a chemokine receptor. As an anti-CCR8 antibody, it is designed to bind to this receptor, which is expressed on certain immune cells. The drug is being investigated for its potential role in treating advanced solid tumors by modulating the immune response.

Who is developing BAY3375968?

BAY3375968 is being developed by Bayer AG, a multinational pharmaceutical company. Bayer is conducting a Phase 1 clinical trial to evaluate the drug's safety, tolerability, and pharmacokinetics in participants with advanced solid tumors.

What phase is BAY3375968 in?

BAY3375968 is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing Phase 1 trial is a first-in-human study designed to assess the drug's safety, how it moves through the body, and to identify the optimal dose.

What clinical trials is BAY3375968 in?

BAY3375968 is being studied in a single Phase 1 clinical trial with the identifier NCT05537740. This first-in-human study is evaluating the drug alone and in combination with pembrolizumab in participants with advanced solid tumors. The trial is active but not recruiting, with an enrollment target of 129 participants.

Is BAY3375968 the same as pembrolizumab?

No, BAY3375968 is not the same as pembrolizumab. BAY3375968 is an anti-CCR8 antibody developed by Bayer, while pembrolizumab is an anti-PD-1 antibody. In the clinical trial NCT05537740, BAY3375968 is being tested both alone and in combination with pembrolizumab to evaluate their combined effects.