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BAY2757556

Phase 2

Solid Tumors Harboring NTRK Fusion | Small molecule | Oncology |Bayer AG|Last Updated: Jul 1, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment215

FDA Designations

No designations recorded

Clinical trial landscape

BAY2757556 · 1 trial · 1 indication

Phase 2 1
NCT02576431A Study to Test the Effect of the Drug Larotrectinib in Adults and Children With NTRK-fusion Positive Solid TumorsSolid Tumors Harboring NTRK Fusion
COMPLETED215 Analytics
PHASE2COMPLETED
A Study to Test the Effect of the Drug Larotrectinib in Adults and Children With NTRK-fusion Positive Solid Tumors
Solid Tumors Harboring NTRK FusionUnlock trial analytics

Study Endpoints

Primary Endpoints

Best overall response of confirmed complete response (CR) or partial response (PR) as determined by an independent radiology review committee using RECIST v1.1 or RANO criteria, as appropriate to tumor type.
Up to 120 months

Secondary Endpoints

Best overall response of confirmed CR or PR as determined by the treating Investigator using RECIST v1.1 or RANO criteria, as appropriate to tumor type
Up to 120 months
Duration of response (DOR): determined for subjects with best overall response of confirmed CR or PR by 1) an independent radiology review committee and 2) the treating Investigator
Up to 120 months
Clinical benefit rate (CBR): best overall response of confirmed CR, PR, or stable disease lasting 16 or more weeks following the initiation of Larotrectinib
Up to 120 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm 1_NSCLCEXPERIMENTALPatients with solid non-small cell lung cancer (NSCLC) harboring NTRK fusions (arm closed)
Arm 2_ThyroidEXPERIMENTALPatients with solid thyroid tumors harboring NTRK fusions (arm closed)
Arm 3_SarcomaEXPERIMENTALPatients with soft-tissue sarcoma harboring NTRK fusions (arm closed)
Arm 4_ColorectalEXPERIMENTALPatients with solid colorectal tumors harboring NTRK fusions (arm closed)
Arm 5_SalivaryEXPERIMENTALPatients with solid salivary tumors harboring NTRK fusions (arm closed)
Arm 6_BiliaryEXPERIMENTALPatients with solid biliary tumors harboring NTRK fusions (arm closed)
Arm 7_Primary CNSEXPERIMENTALPatients with solid tumors in the primary central nervous system (CNS) harboring NTRK fusions (arm closed)
Arm 8_Other tumorsEXPERIMENTALPatients with e.g. kidney cancer, squamous cell cancer of head or neck or ovarian solid tumors harboring NTRK fusions (arm closed)
Arm 9_Solid tumors without confirmed NTRK fusionEXPERIMENTALPatients eligible for arms 1 to 8, but with documented NTRK fusion from a laboratory where CLIA or equivalent certification cannot be confirmed by the sponsor at the time of consent (arm closed)
Arm 10_Prospective cohortEXPERIMENTALPatients with melanoma, non secretory breast and colorectal cancer or other tumor types harboring NTRK fusions, except soft tissue sarcoma, salivary gland and thyroid cancer (arm closed)
Arm 11_Bone health cohortEXPERIMENTALPatients with all tumor types harboring NTRK fusions, not eligible for the main prospective cohort, including patients with non-measurable disease

Interventions

NameTypeDescription
BAY2757556 (Larotrectinib, Vitrakvi)DRUGLarotrectinib will be administered orally as capsule or liquid solution at a dose of 100 mg twice daily in continuing 28-days cycles.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites98

Inclusion Criteria: * Locally-advanced or metastatic malignancy with an NTRK1, NTRK2, or NTRK3 gene fusion, identified through molecular assays as routinely performed at CLIA or other similarly-certified laboratories. Subjects who have an NTRK gene fusion identified in a lab where CLIA or equivalen...

Countries:United StatesArgentinaAustraliaBelgiumBrazilCanadaChinaColombiaCzechiaDenmarkFranceGermanyIndiaIrelandItalyJapanPortugalRussiaSingaporeSlovakiaSouth KoreaSpainSwedenTaiwanTurkey (Türkiye)
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Recent Changes (Last 90 Days)

MEDIUMAug 1, 2026NCT02576431TRIAL_REMOVED: changed
MEDIUMAug 1, 2026NCT02576431TRIAL_REMOVED: changed
MEDIUMAug 1, 2026NCT02576431TRIAL_REMOVED: changed

Frequently asked questions about BAY2757556

What is BAY2757556 used for?

BAY2757556 is an investigational small molecule being studied for the treatment of solid tumors harboring NTRK fusion. It is in Phase 2 clinical development for this oncology indication. The drug is not approved and remains under clinical investigation.

Who makes BAY2757556?

BAY2757556 is being developed by Bayer AG, a multinational pharmaceutical company traded on the OTC market under the ticker BAYRY. The drug is currently in Phase 2 clinical development for solid tumors harboring NTRK fusion.

What phase is BAY2757556 in?

BAY2757556 is in Phase 2 clinical development. It is an investigational drug for solid tumors harboring NTRK fusion and has not been approved by regulatory authorities. One Phase 2 clinical trial for the drug has been completed.

What clinical trials is BAY2757556 in?

BAY2757556 has been studied in one clinical trial, NCT02576431, a Phase 2 study in adults and children with NTRK-fusion positive solid tumors. The trial, which enrolled 215 participants, is completed. The study was conducted across multiple countries including the United States, Germany, and Japan.

Is BAY2757556 the same as larotrectinib?

BAY2757556 is not the same as larotrectinib. The clinical trial NCT02576431, which studied BAY2757556, is titled as a study of larotrectinib, indicating the two names refer to the same drug. BAY2757556 is an alternative identifier for larotrectinib in this context.