ClinicalTrials.gg
RecruitingNCT06663319Updated Nov 3, 2026

A Study of JNJ-89402638 for Metastatic Colorectal and Gastric Cancers

A Phase 1 interventional study of JNJ-89402638 and Bevacizumab in Colorectal Neoplasms and Gastrointestinal Neoplasms, sponsored by Janssen Research & Development, LLC. Recruiting at 12 sites in 3 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-03.

Sponsored by Janssen Research & Development, LLC (part of Johnson & Johnson) · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Oct 2024; still recruiting 2 years later.
Phase
Phase 1
Study type
Interventional
Enrollment
260
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 2,338 studies in Colorectal Neoplasms with a site in United States — 420 open to participants now, 629 under way, 30 of them phase 3. Colorectal Neoplasms · United States.

Planned enrollment
461st of 1,931
260 · median 64
Started
2024
with 123 others
Phase 1
551 of 2,338
101 open now
Primary completion
2028-02
later than 399 of 627 live
Registered
2,084th of 2,338
by date

Among the 2,338 studies in Colorectal Neoplasms with a site in United States, this one is the 461st largest by planned enrollment of the 1,931 interventional ones that give a count, is one of 124 that started in 2024, is one of 551 in phase 1, reaches primary completion later than 399 of the 627 other live ones, and was the 2,084th registered.

Colorectal Neoplasms

6,544 studies on the registry are indexed under Colorectal Neoplasms; 1,666 are open to participants now.

Browse Colorectal Neoplasms studies →

Open to participants now

420 of the 2,338 studies in Colorectal Neoplasms with a site in United States are open now. Recruiting first, the newest first:

415 more — sign in →

All 420 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 1,184 Colorectal Neoplasms studies recruiting now, 767 (65%) set no upper age limit and 264 (22%) stop at 75 or younger; 48 take children under 18; 124 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 2,338 studies in Colorectal Neoplasms with a site in United States, or all of them as a file.
02

Study summary

The purpose of this study is to determine the putative recommended phase 2 dose(s) (RP2Ds) and best way to take (optimal route of administration) JNJ-89402638 and to determine the safety of JNJ-89402638 at the RP2D(s) in participants with metastatic colorectal cancer (mCRC) and metastatic gastric cancer (mGAC) and to determine the safety and tolerability of JNJ-89402638 in combination with bevacizumab or biosimilar with or without chemotherapy in participants with mCRC.

03

Conditions studied

  • Colorectal Neoplasms
  • Gastrointestinal Neoplasms
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • For Part 1 (dose escalation), Part 2 (Arm A [JNJ-89402638 monotherapy]): Have or cytologically confirmed diagnosis of colorectal adenocarcinoma (CRC) progressing after 2 or more prior lines of standard therapy in the /unresectable setting; For Part 2 Arm B (JNJ-89402638 + bevacizumab or biosimilar): Have histologically or cytologically confirmed diagnosis of CRC progressing after 2 or more prior lines of standard therapy in the metastatic/unresectable setting; For Part 2 Arm C (JNJ-89402638 + FOLFOX/bevacizumab or biosimilar): Have histologically or cytologically confirmed diagnosis of microsatellite stable (MSS) or proficient mismatch repair (pMMR) CRC progressing after 1 or more prior lines of standard therapy in the metastatic/unresectable setting. Participants must have previously received a fluoropyrimidine and irinotecan doublet (such as FOLFIRI); For Part 2 Arm D (JNJ-89402638 + FOLFIRI/bevacizumab or biosimilar): Have histologically or cytologically confirmed diagnosis of MSS or pMMR CRC progressing after 1 prior line of standard therapy in the metastatic/unresectable setting. Must not have received irinotecan previously for metastatic disease; For Part 2 Arm E (JNJ-89402638 monotherapy in mGAC): Have histologically or cytologically confirmed diagnosis of gastric adenocarcinoma or gastroesophageal junction adenocarcinoma progressing after 1 or more prior lines of standard therapy in the metastatic/unresectable setting
  • Have evaluable or per (RECIST) version 1.1

    1. Part 1: Must have either measurable or evaluable disease
    2. Part 2: Must have at least 1 measurable lesion
  • (ECOG) performance status of 0-1
  • Have an estimated or measured (GFR) greater than or equal to (>=) 30 milliliter per minute (mL/min) based on modification of diet in renal disease (MDRD) 4-variable formula

Exclusion criteria

Exclusion Criteria:

  • Active (new or progressive) , , or untreated spinal cord compression
  • Toxicity from prior anticancer therapy that has not resolved to Grade less than or equal to (\<=)1 (except alopecia, vitiligo, Grade \<= 2 peripheral neuropathy, or endocrinopathies that are stable on hormone replacement). For Part 2 Arm C: Grade 2 or higher peripheral neuropathy is considered exclusionary
  • Has a prior or concurrent second (other than the disease under study) unless natural history or treatment is unlikely to interfere with any study endpoints of safety or the efficacy of the study treatment
  • Received (doses >10 mg/day prednisone or equivalent) within 7 days prior to the first dose of study drug
  • Received or plans to receive any live, attenuated vaccine within 4 weeks before the first dose of study treatment or within 4 weeks after the last dose of study treatment
Terms in these criteria, in plain language(10)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
260 participants (estimated)

Study arms

  • Experimental
    Part 1 (Dose Expansion)

    Participants 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.

    Drug: JNJ-89402638

  • Experimental
    Part 2 (Dose Expansion): Arm A

    Participants with mCRC will receive JNJ-89402638 at the RP2D(s) and route as determined in Part 1 as a monotherapy.

    Drug: JNJ-89402638

  • Experimental
    Part 2 (Dose Expansion): Arm B

    Participants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 along with bevacizumab or biosimilar.

    Drug: JNJ-89402638 · Drug: Bevacizumab

  • Experimental
    Part 2 (Dose Expansion): Arm C

    Participants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 along with bevacizumab or biosimilar and FOLFOX.

    Drug: JNJ-89402638 · Drug: Bevacizumab · Drug: FOLFOX

  • Experimental
    Part 2 (Dose Expansion): Arm D

    Participants with mCRC will receive JNJ-89402638 at the RP2D(s) determined in Part 1 in combination with bevacizumab or biosimilar and FOLFIRI.

    Drug: JNJ-89402638 · Drug: Bevacizumab · Drug: FOLFIRI

  • Experimental
    Part 2 (Dose Expansion): Arm E

    Participants with metastatic gastric adenocarcinoma (mGAC) will receive JNJ-89402638 at the RP2D(s) and route as determined in Part 1.

    Drug: JNJ-89402638

Interventions

  • DrugJNJ-89402638

    JNJ-89402638 will be administered.

  • Bevacizumab or biosimilar will be administered.

  • DrugFOLFOX

    Chemotherapy agent FOLFOX will be administered.

  • DrugFOLFIRI

    Chemotherapy agent FOLFIRI will be administered.

06

What researchers measure

Primary outcomes

  1. Part 1 and Part 2: Number of Participants with Adverse Events (AEs) by Severity

    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.

    Time frame: From Baseline up to approximately 24 months

  2. Part 1: Number of Participants with Dose-Limiting Toxicity (DLT)

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

    Time frame: From Baseline up to 28 days

Secondary outcomes

  1. Part 1 and Part 2: Serum Concentration for JNJ-89402638

    Serum Concentration for JNJ-89402638 will be reported.

    Time frame: Up to approximately 24 months

  2. Part 1 and Part 2: Maximum Serum Concentration (Cmax) of JNJ-89402638

    Cmax of JNJ-89402638 will be reported.

    Time frame: Up to approximately 24 months

  3. Part 1 and Part 2: Minimum Serum Concentration (Cmin) of JNJ-89402638

    Cmin of JNJ-89402638 will be reported.

    Time frame: Up to approximately 24 months

  4. Part 1 and Part 2: Time to Reach Maximum Observed Serum Concentration (Tmax) of JNJ-89402638

    Tmax of JNJ-89402638 will be reported.

    Time frame: Up to approximately 24 months

  5. Part 1 and Part 2: Area Under the Serum Concentration-time Curve (AUC) of JNJ-89402638

    AUC of JNJ-89402638 will be reported.

    Time frame: Up to approximately 24 months

  6. Part 1 and Part 2: Number of Participants with Presence of Anti-JNJ-89402638 Antibodies

    Participants with anti-JNJ-89402638 antibodies will be reported.

    Time frame: Up to approximately 24 months

  7. Part 1 and Part 2: Overall Response (OR)

    Overall response is best response of complete response (CR) or partial response (PR), assessed according to response evaluation criteria in solid tumors (RECIST) version 1.1.

    Time frame: Up to approximately 24 months

  8. Part 1 and Part 2: Complete Response (CR)

    Complete response is defined as a best response of CR assessed according to RECIST version 1.1.

    Time frame: Up to approximately 24 months

  9. Part 1 and Part 2: Time to Response (TTR)

    TTR is defined for participants who achieved an OR from the time of the first dose of study treatment to the first response of PR or better as assessed according to RECIST version 1.1.

    Time frame: Up to approximately 24 months

  10. Part 1 and Part 2: Duration of Response (DOR)

    DOR is defined for participants who achieved an OR in the time between the date of initial documentation of first response of PR or better to the date of first documented evidence of progressive disease or death due to any cause, whichever occurs first, as assessed according to RECIST version 1.1

    Time frame: Up to approximately 24 months

07

Study locations

12 of 12 sites recruiting
08

References and documents

Individual participant data

Plan to share: Yes — The data sharing policy of Johnson \& Johnson Innovative Medicine is available at www.innovativemedicine.jnj.com/our-innovation/clinical-trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu.

Data sharing details ↗ · www.jnj.com

No publications or documents are linked to this record.

09

Timeline

2 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Oct 2024 (actual). Primary completion is estimated for Feb 2028, 40 months after the start.

Of 268 industry-sponsored phase 1 interventional studies under Colorectal Neoplasms, half reached primary completion within 47 months of starting (the median), counting those still running; a quarter within 31 and three quarters within 66. This study's planned 40 months is below that.

Counting every sponsor, half of 434 studies reached it within 48 months; a quarter within 31 and three quarters within 69.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 28, 2024
First posted
Oct 29, 2024
StartActual
Oct 15, 2024
Primary completionEst.
Feb 25, 2028
CompletionEst.
Jul 19, 2028
Last update
Nov 3, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Minor edits
Nothing that changes what the study is or who can join. Edited: verification date
2 updates, last Nov 3, 2026
Show all 2 updates
  1. Nov 3, 2026
    Minor edits only
    + 1 other change: verification date
  2. Sep 25, 2026
    Minor edits only
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT06663319
Responsible party
Sponsor
First posted
Oct 29, 2024
Start date
Oct 15, 2024
Primary completion
Feb 25, 2028 (estimated)
Completion
Jul 19, 2028 (estimated)
Last update
Nov 3, 2026

Study contacts

Study Contact
Contact
Participate-In-This-Study1@its.jnj.com
844-434-4210
Janssen Research & Development, LLC Clinical Trial
study director · Janssen Research & Development, LLC

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Discussion

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