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JNJ-89402638

Phase 1

Colorectal Neoplasms | Small molecule | Oncology |Johnson & Johnson|Last Updated: Aug 28, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment260

FDA Designations

No designations recorded

Clinical trial landscape

JNJ-89402638 · 1 trial · 2 indications

Phase 1 1
NCT06663319A Study of JNJ-89402638 for Metastatic Colorectal and Gastric CancersColorectal Neoplasms
RECRUITING260 Analytics
PHASE1RECRUITING
A Study of JNJ-89402638 for Metastatic Colorectal and Gastric Cancers
Colorectal NeoplasmsUnlock trial analytics

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) and optimal route(s) of administration for JNJ-89402638 monotherapy have been identified.
Part 2 (Dose Expansion): Arm AEXPERIMENTALParticipants with mCRC will receive JNJ-89402638 at the RP2D(s) and route as 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(s) and route as 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 to N/A
SexALL
Healthy VolunteersNo
Study Sites12

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)

LOWAug 28, 2026NCT06663319lastUpdatePostDate: changed
LOWAug 28, 2026NCT06663319lastUpdatePostDate: changed
LOWJul 6, 2026NCT06663319lastUpdatePostDate: changed
LOWJul 6, 2026NCT06663319lastUpdatePostDate: changed
LOWJun 24, 2026NCT06663319Enrollment: 220 → 260
LOWJun 24, 2026NCT06663319Enrollment: 220 → 260

Frequently asked questions about JNJ-89402638

What is JNJ-89402638 used for?

JNJ-89402638 is an investigational small molecule being developed for the treatment of colorectal neoplasms, specifically metastatic colorectal cancer. It is also being studied in gastric cancers as part of the same clinical trial. The drug is currently in Phase 1 clinical development and is not yet approved by regulatory authorities.

Who makes JNJ-89402638?

JNJ-89402638 is being developed by Johnson & Johnson, a multinational pharmaceutical company traded on the New York Stock Exchange under the ticker symbol JNJ. The company is conducting a Phase 1 clinical trial to evaluate the safety and efficacy of this investigational drug in patients with advanced gastrointestinal cancers.

What phase is JNJ-89402638 in?

JNJ-89402638 is in Phase 1 clinical development. This is an early-stage trial designed to assess the drug's safety, tolerability, and preliminary efficacy in patients with metastatic colorectal and gastric cancers. The drug is investigational and has not received FDA approval for any indication.

What clinical trials is JNJ-89402638 in?

JNJ-89402638 is being evaluated in a single Phase 1 clinical trial registered as NCT06663319, titled 'A Study of JNJ-89402638 for Metastatic Colorectal and Gastric Cancers.' The trial is currently recruiting participants in the United States, South Korea, and Spain, with a planned enrollment of 260 patients aged 18 years and older.

Is JNJ-89402638 the same as any other drug?

No alternative names for JNJ-89402638 have been disclosed in the available information. The drug is identified solely by its development code JNJ-89402638 in the clinical trial registry. It is a distinct investigational compound being developed by Johnson & Johnson for the treatment of colorectal and gastric cancers.