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Recruiting Phase 1 NCT06952010

NCT06952010 A Study of XB628 Alone and in Combination With Zanzalintinib in Participants With Recurrent Advanced or Metastatic Solid Tumors

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Clinical Trial Summary
NCT ID NCT06952010
Status Recruiting
Phase Phase 1
Sponsor Exelixis
Condition Solid Tumor
Study Type INTERVENTIONAL
Enrollment 303 participants
Start Date 2025-05-01
Primary Completion 2027-05-31

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
XB628Zanzalintinib

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 303 participants in total. It began in 2025-05-01 with a primary completion date of 2027-05-31.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This study consists of a Dose-Escalation stage and a Dose Expansion stage. The primary purpose of the dose escalation stage is to determine the maximum tolerated dose (MTD) and/or recommended dosage(s) for expansion (RDE\[s\]); and the dose expansion stage is to evaluate the preliminary antitumor activity of XB628 as a single agent and in combination with zanzalintinib.

Eligibility Criteria

Key Inclusion Criteria: * Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1. * Minimum life expectancy of ≥ 12 weeks. * Have a recurrent advanced or metastatic solid tumor that is histologically or cytologically confirmed. * Adequate organ and marrow function. * Not amenable to curative treatment with surgery or radiation. * Received at least 1 line of prior systemic anticancer therapy in the recurrent or metastatic setting. * Acceptable alternative therapy was received, refused, intolerable, or no longer effective. * Capable of understanding and complying with the protocol requirements and provide signed informed consent according to the protocol and local requirements. Key Exclusion Criteria * Primary brain tumors or known active brain metastases. * Major surgery (eg, gastrointestinal surgery, removal or biopsy of brain metastasis) within 4 weeks before the first dose of study treatment. * Received radiation therapy within 1 week before the first dose of study treatment or clinically relevant ongoing complications from prior radiation therapy. * Received prior therapy targeting NK cells (eg, monalizumab). * A woman of childbearing potential has a positive serum pregnancy test within 7 days prior to study treatment. Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Contact & Investigator

Central Contact

Exelixis Clinical Trials

✉ druginfo@exelixis.com

📞 1-888-EXELIXIS (888-393-5494)

Principal Investigator

Medical Director

STUDY DIRECTOR

Exelixis

Frequently Asked Questions

Who can join the NCT06952010 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Solid Tumor. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06952010 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT06952010 currently recruiting?

Yes, NCT06952010 is actively recruiting participants. Contact the research team at druginfo@exelixis.com for enrollment information.

Where is the NCT06952010 trial being conducted?

This trial is being conducted at San Francisco, United States, New Haven, United States, Tampa, United States, Boston, United States and 7 additional locations.

Who is sponsoring the NCT06952010 clinical trial?

NCT06952010 is sponsored by Exelixis. The principal investigator is Medical Director at Exelixis. The trial plans to enroll 303 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology