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JNJ-89402638

Phase 1

Colorectal Neoplasms | Small molecule | Oncology |Johnson & Johnson|Last Updated: May 8, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDBiomarker
Total Trials1
Total Enrollment220
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06663319A Study of JNJ-89402638 for Metastatic Colorectal and Gastric CancersPHASE1 RECRUITING 220Oct 15, 2024Jul 19, 2028May 8, 202611 United States, South Korea +1
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Study Endpoints
Primary Endpoints
Part 1 and Part 2: Number of Participants with Adverse Events (AEs) by Severity
From Baseline up to approximately 24 months

An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Severity of AEs will be graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0. Cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS) will be graded per American Society for Transplantation and Cellular Therapy (ASTCT) consensus.

Part 1: Number of Participants with Dose-Limiting Toxicity (DLT)
From Baseline up to 28 days

The DLTs are specific adverse events including high grade hematologic or non-hematologic toxicities.

Secondary Endpoints
Part 1 and Part 2: Serum Concentration for JNJ-89402638
Up to approximately 24 months
Part 1 and Part 2: Maximum Serum Concentration (Cmax) of JNJ-89402638
Up to approximately 24 months
Part 1 and Part 2: Minimum Serum Concentration (Cmin) of JNJ-89402638
Up to approximately 24 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1 (Dose Expansion)EXPERIMENTALParticipants with unresectable metastatic colorectal adenocarcinoma (mCRC) will receive JNJ-89402638 in Part 1 (Dose escalation) of the study and the dose levels will be escalated sequentially until the recommended Phase 2 Dose(s) (RP2D) for JNJ-89402638 monotherapy have been identified.
Part 2 (Dose Expansion): Arm AEXPERIMENTALParticipants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 as a monotherapy.
Part 2 (Dose Expansion): Arm BEXPERIMENTALParticipants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 along with bevacizumab or biosimilar.
Part 2 (Dose Expansion): Arm CEXPERIMENTALParticipants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 along with bevacizumab or biosimilar and FOLFOX.
Part 2 (Dose Expansion): Arm DEXPERIMENTALParticipants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 in combination with bevacizumab or biosimilar and FOLFIRI.
Part 2 (Dose Expansion): Arm EEXPERIMENTALParticipants with metastatic gastric adenocarcinoma (mGAC) will receive JNJ-89402638 at the RP2D determined in Part 1.
Interventions
NameTypeDescription
JNJ-89402638DRUGJNJ-89402638 will be administered.
BevacizumabDRUGBevacizumab or biosimilar will be administered.
FOLFOXDRUGChemotherapy agent FOLFOX will be administered.
FOLFIRIDRUGChemotherapy agent FOLFIRI will be administered.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * For Part 1 (dose escalation), Part 2 (Arm A \[JNJ-89402638 monotherapy\]): Have histologically or cytologically confirmed diagnosis of colorectal adenocarcinoma (CRC) progressing after 2 or more prior lines of standard therapy in the metastatic/unresectable setting; For Part 2...

Countries:United StatesSouth KoreaSpain
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06663319primaryCompletionDate: changed
LOWMay 24, 2026NCT06663319studyFirstPostDate: changed