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BAY3498264

Phase 1

Advanced Solid Tumors Harboring KRAS G12C Mutation | Small molecule | Oncology |Bayer AG|Trials Updated: Sep 23, 2026

BAY3498264 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Oct 2024

BAY3498264 target and mechanism

Molecular targetKRAS G12C
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment104

FDA Designations

No designations recorded

BAY3498264 clinical trials

BAY3498264 · 1 trial · 1 indication

Phase 1 1
NCT06659341A Phase I Study of BAY3498264 Given Together With Sotorasib in Participants Who Have Advanced Solid Cancers With Specific Genetic Changes Called KRASG12C MutationAdvanced Solid Tumors Harboring KRAS G12C Mutation
RECRUITING104 Analytics
PHASE1RECRUITING
A Phase I Study of BAY3498264 Given Together With Sotorasib in Participants Who Have Advanced Solid Cancers With Specific Genetic Changes Called KRASG12C Mutation
Advanced Solid Tumors Harboring KRAS G12C MutationUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with treatment-emergent adverse events (TEAEs) and treatment-emergent serious adverse events (TESAEs) categorized by severity.
30-35 days after the last dose
Maximum tolerated dose (MTD) or Maximum administered dose (MAD) of BAY 3498264 in combination with sotorasib.
Approximate 3 years
Number of participants with Dose-limiting toxicity (DLTs) during the DLT observation period categorized by severity.
DLT evaluation period (Cycle 1) includes 28 days
Maximum observed drug concentration in plasma (Cmax) of the respective dosing interval of BAY3498264 after single dose and multiple dose administrations.
Multiple time points: Cycle 1 28-day cycle followed by 21-day treatment cycles
Area under the concentration vs. time curve (AUC) of the respective dosing interval of BAY3498264 after single dose and multiple dose administrations.
Multiple time points: Cycle 1 28-day cycle followed by 21-day treatment cycles

Secondary Endpoints

Objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST v1.1) by investigator assessment.
Every 6 weeks (±7 days) for the first 36 weeks and every 9 weeks (± 7 days) thereafter until radiological disease progression (PD) occurs
Recommended dose(s) and schedule(s) of BAY 3498264 to be used in combination with sotorasib for further development stages.
Approximate 3 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose escalationEXPERIMENTALDuring dose escalation, at each dose level BAY3498264 monotherapy will be administered for 7 days as a safety run-in, prior to introduction of a combination agent (sotorasib) for 21-day treatment cycles. Intra-participant dose escalation will be implemented: participants will be able to move to a cohort offering a higher dose level of BAY3498264 provided protocol-specified criteria are met.
Backfill cohortsEXPERIMENTALBackfill cohorts may be initiated concurrently with dose escalation cohorts to generate additional safety, PK, and PD data to facilitate the selection of the optimal doses for use in further development.
Exploratory expansion cohortsEXPERIMENTALExploratory expansion cohorts may be recruited to provide additional safety, PK/PD, and efficacy data.

Interventions

NameTypeDescription
BAY3498264DRUGOral
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * Histologically confirmed solid tumor malignancy with documented KRAS\^G12C mutation as assessed by an appropriately accredited laboratory. * Documented disease progression after treatment with at least 1 prior standard of care (SoC) systemic therapy other than a G12C inhibitor...

Countries:AustraliaDenmarkItalySpainUnited Kingdom
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Recent Changes (Last 90 Days)

LOWSep 23, 2026NCT06659341lastUpdatePostDate: changed
LOWSep 23, 2026NCT06659341lastUpdatePostDate: changed
LOWSep 23, 2026NCT06659341lastUpdatePostDate: changed
MEDIUMAug 26, 2026NCT06659341primaryCompletionDate: changed
MEDIUMAug 26, 2026NCT06659341primaryCompletionDate: changed
LOWAug 3, 2026NCT06659341Completion: 2027-06-15 → 2027-07-30

Frequently asked questions about BAY3498264

What is BAY3498264 used for?

BAY3498264 is an investigational small molecule being studied for advanced solid tumors that harbor a KRAS G12C mutation. It is given in combination with sotorasib in a Phase 1 trial enrolling adults with these genetically defined cancers. It is not approved for any use and remains in clinical development.

What does BAY3498264 target?

BAY3498264 targets KRAS G12C, a mutated form of the KRAS protein found in certain solid tumors. By acting on this specific mutation, the small molecule is designed to address cancers driven by KRAS G12C. It is being evaluated together with sotorasib, another KRAS G12C-directed agent.

Who is developing BAY3498264?

BAY3498264 is being developed by Bayer AG, which trades over the counter in the United States under the ticker BAYRY. Bayer is the sponsor of the Phase 1 study evaluating the compound in KRAS G12C-mutated advanced solid tumors.

What phase is BAY3498264 in?

BAY3498264 is in Phase 1 clinical development. It is investigational and has not been approved by the FDA or any other regulatory agency. The single ongoing study is a Phase 1 trial, and no Phase 2 or Phase 3 trials of BAY3498264 have been completed.

What clinical trials is BAY3498264 in?

BAY3498264 is being studied in one active trial, NCT06659341, a Phase 1 study combining BAY3498264 with sotorasib in participants with advanced solid cancers carrying KRAS G12C mutations. The trial is recruiting, plans to enroll 104 participants, and sites are in Australia, Denmark, Italy, Spain, and the United Kingdom.

Is BAY3498264 given with sotorasib?

Yes. The Phase 1 trial NCT06659341 evaluates BAY3498264 given together with sotorasib in participants who have advanced solid tumors with KRAS G12C mutations. The study is controlled, is not randomized or double blinded, and is enrolling adults aged 18 years and older across five countries.