ClinicalTrials.gg
RecruitingNCT07750158STELLAR-316Updated Sep 21, 2026

Zanzalintinib Alone or in Combination With Pembrolizumab and Berahyaluronidase Alfa in Participants With Colorectal Cancer With Molecular Residual Disease

A Phase 3 interventional study of Zanzalintinib and Pembrolizumab (+) Berahyaluronidase alfa in Colorectal Cancer, sponsored by Exelixis. Recruiting at 13 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-21.

Sponsored by Exelixis · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
600
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The primary objective of this study is to evaluate the effectiveness of zanzalintinib + Pembrolizumab (+) berahyaluronidase alfa and zanzalintinib alone compared with placebo.

02

Conditions studied

  • Colorectal Cancer

Keywords

  • Molecular Residual Disease
  • Stage II
  • Stage III
  • Circulating Tumor Deoxyribose Nucleic Acid (ctDNA) Positive
  • Signatera Test
  • Recurrence Prevention
  • Early Stage Resectable Colorectal Cancer (CRC)
  • Curative-Intent Therapy
  • Microsatellite-Stable (MSS)
  • Microsatellite Instability (MSI) - Low
  • Mismatch Repair Proficient (pMMR)
03

In context

Colorectal Neoplasms

6,541 studies on the registry are indexed under Colorectal Neoplasms; 1,667 are open to participants now.

This study's planned enrollment of 600 is above the median of 76 across 4,800 interventional studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Lead sponsor

Exelixis is the lead sponsor of 57 studies on the registry; 11 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

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

Eligibility criteria

Key Inclusion Criteria:

  • confirmed diagnosis of Stage II or III adenocarcinoma of colon or rectum.
  • Documented local MSI and/or mismatch repair (MMR) test result demonstrating MSS, MSI-low, or pMMR status.
  • Colon or rectal cancer with completed definitive therapy.
  • ctDNA-positive based on local testing using the Natera Signatera tissue-informed molecular residual disease (MRD) assay.
  • No radiographic evidence of disease, as confirmed by a negative baseline computed tomography (CT) of the chest, abdomen, and pelvis (CAP), or CT of chest and magnetic resonance imaging (MRI) of abdomen/pelvis.

Key Exclusion Criteria:

  • History of solid organ or stem cell transplant.
  • Known additional that is progressing or has required active treatment within the past 2 years.
  • Prior treatment with (ICIs) or Vascular endothelial growth factor receptor (VEGFR) inhibitors.
  • History of CRC requiring systemic anticancer therapy prior to the definitive therapy.
  • Use of systemic anticancer therapy (including therapy) or radiation therapy after the completion of definitive therapy.
  • Administration of a live, attenuated vaccine within 30 days of randomization and during treatment.

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

Terms in these criteria, in plain language(5)

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.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

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.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
600 participants (estimated)

Study arms

  • Experimental
    Zanzalintinib + Pembrolizumab (+) Berahyaluronidase alfa

    Participants will receive zanzalintinib in combination with pembrolizumab (+) berahyaluronidase alfa for up to 2 years.

    Drug: Zanzalintinib · Biological: Pembrolizumab (+) Berahyaluronidase alfa

  • Experimental
    Zanzalintinib Monotherapy

    Participants will receive zanzalintinib for up to 2 years.

    Drug: Zanzalintinib

  • Placebo comparator
    Placebo

    Participants will receive placebo to match zanzalintinib for up to 2 years.

    Drug: Placebo

Interventions

  • Oral tablets administered once daily.

    Also known as: XL092

  • BiologicalPembrolizumab (+) Berahyaluronidase alfa

    Pembrolizumab + berahyaluronidase alfa fixed-dose combination administered via subcutaneous (SC) injection once every 3 weeks (Q3W).

    Also known as: KEYTRUDA QLEX™, KEYTRUDA SC, MK-3475A

  • DrugPlacebo

    Placebo to match zanzalintinib oral tablets administered once daily.

06

What researchers measure

Primary outcomes

  1. Disease-Free Survival (DFS) in Zanzalintinib + MK-3475A Versus Placebo as Assessed by the Investigator

    Time frame: Up to 24 months

  2. DFS in Zanzalintinib Monotherapy Versus Placebo as Assessed by the Investigator

    Time frame: Up to 24 months

Secondary outcomes

  1. Proportion of Participants with ctDNA Clearance in Zanzalintinib + MK-3475A Versus Placebo

    Time frame: Up to 24 months

  2. Proportion of Participants with ctDNA Clearance in Zanzalintinib Monotherapy Versus Placebo

    Time frame: Up to 24 months

  3. Overall Survival (OS) in Zanzalintinib + MK-3475A Versus Placebo

    Time frame: Up to 24 months

  4. OS in Zanzalintinib Monotherapy Versus Placebo

    Time frame: Up to 24 months

  5. DFS in Zanzalintinib + MK-3475A Versus Zanzalintinib Monotherapy as Assessed by the Investigator

    Time frame: Up to 24 months

  6. Proportion of Participants with Treatment Emergent Adverse Events (TEAEs)

    Time frame: Up to 24 months

07

Study locations

13 of 13 sites recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Council Bluffs
    Council Bluffs, Iowa 51503, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Grand Island
    Grand Island, Nebraska 68803, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Regional
    Grand Island, Nebraska 68803, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Methodist
    Omaha, Nebraska 68114, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Bergan
    Omaha, Nebraska 68124, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Legacy
    Omaha, Nebraska 68130, United States
    Recruiting
  • Oncology Hematology West, PC dba Nebraska Cancer Specialists - Papillion
    Papillion, Nebraska 68046, United States
    Recruiting
  • Astera Cancer Care
    Bridgewater, New Jersey 08807, United States
    Recruiting
  • Astera Cancer Care
    East Brunswick, New Jersey 08816, United States
    Recruiting
  • Astera Cancer Care
    Edison, New Jersey 08820, United States
    Recruiting
  • Astera Cancer Care
    Monroe, New Jersey 08831, United States
    Recruiting
  • Astera Cancer Care
    Somerset, New Jersey 08873, United States
    Recruiting
  • Astera Cancer Care
    Toms River, New Jersey 08757, United States
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07750158
Lead sponsor
Exelixis
Responsible party
Sponsor
First posted
Aug 6, 2026
Start date
Aug 25, 2026 (estimated)
Primary completion
Apr 5, 2030 (estimated)
Completion
Apr 5, 2030 (estimated)
Last update
Sep 21, 2026

Study contacts

Exelixis Clinical Trials
Contact
druginfo@exelixis.com
1-888-393-5494
Medical Director
study director · Exelixis

Oversight

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

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