A Phase 2 Trial of Zanzalintinib in Advanced/Metastatic Bone Sarcomas (ZAMBONE)

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Investigational drug late phase More information Active drug More information Moderate burden on patient More information

Trial Details

Sponsor: M.D. Anderson Cancer Center (other)

Phase: 2

Start date: Dec. 5, 2025

Planned enrollment: 70

Trial ID: NCT07193550
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More trial details at ClinicalTrials.gov More info

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Investigational Drug AI Analysis

chevron Show for: Zanzalintinib (XL092)

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Goal: Evaluate the activity and safety of zanzalintinib monotherapy in advanced or metastatic bone sarcomas.

Patients: Adults with measurable, unresectable locally advanced or metastatic osteosarcoma, Ewing sarcoma, grade 2–3 conventional chondrosarcoma, or another primary bone sarcoma. Patients generally must have received at least one prior systemic therapy, unless no standard treatment exists, and no more than two lines for advanced disease. ECOG performance status must be 0–2. Prior VEGF-targeted tyrosine kinase inhibitors are excluded.

Design: Nonrandomized, four-cohort study organized by sarcoma subtype. All participants receive the investigational treatment; there is no control arm.

Treatments: Participants receive zanzalintinib alone. Zanzalintinib is an oral multikinase inhibitor targeting VEGFR2, MET, and the TAM-family kinases TYRO3, AXL, and MER, which are involved in angiogenesis and tumor progression. Early single-agent studies have shown activity in other cancers, including a 38% response rate in a small previously treated clear-cell renal cell carcinoma cohort; efficacy in bone sarcoma remains to be established.

Outcomes: The stated efficacy objectives are progression-free survival at 16 weeks for osteosarcoma and at 12 weeks for the other cohorts. Secondary measures include RECIST 1.1 objective response rate, progression-free survival, overall survival, and CTCAE v5.0 toxicity. The listed primary outcome also specifies adverse-event incidence through study completion. Exploratory analyses will correlate biomarkers in pretreatment and on-treatment tumor biopsies with clinical benefit.

Burden on patient: Moderate. Oral treatment avoids infusion visits, but participants will need follow-up for imaging and toxicity assessment and must co-enroll in a specimen-collection protocol. Planned pretreatment and on-treatment tumor biopsies add procedures and visits beyond routine care. Visit and scan frequency are not specified.

Last updated: Sep 2026

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Sites (1)

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The University of Texas M. D. Anderson Cancer Center

Houston, Texas, 77030, United States

[email protected] / 713-792-3626

Status: Recruiting

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