Bone SarcomasPhase 2NCT07193550
A Phase 2 Trial of Zanzalintinib in Advanced/Metastatic Bone Sarcomas (ZAMBONE)
A Phase 2 study testing Zanzalintinib in people with Bone Sarcomas, run by M.D. Anderson Cancer Center at 1 site in United States.
Trial summary
To study the treatment efficacy of zanzalintinib monotherapy in patients with advanced and/or metastatic bone sarcomas. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Bone Sarcomas
- What is being tested?
- Zanzalintinib
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 70 participants
- Where
- 1 siteUnited States
- Study dates
- 5 Dec 2025to 31 Oct 2031
- Phase
- Phase 2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients ≥ 18 years old with pathologically confirmed unresectable locally advanced or metastatic bone sarcoma in one of the following categories: Cohort A - Osteosarcoma, Cohort B - Ewing sarcoma, Cohort C - Chondrosarcoma (conventional, grades 2-3), Cohort D - Other primary sarcoma of bone including but not limited to dedifferentiated chondrosarcoma, undifferentiated pleomorphic sarcoma (UPS) of bone, chordoma, and non-Ewing's round cell sarcomas of bone.
- chondrosarcoma, undifferentiated pleomorphic sarcoma (UPS) of bone, chordoma, and non-Ewing's round cell sarcomas of bone.
- Patients with conventional chondrosarcoma (Cohort C) must demonstrate evidence of disease progression by RECIST 1.1 within 12 weeks of trial enrollment
- Patients must have relapsed or become refractory to conventional therapy, receiving at least 1 prior line of systemic therapy unless no standard of care exists.
- Patients may have received no more than 2 prior lines of systemic therapy in the advanced/metastatic setting.
- Multi-agent and/or alternating neoadjuvant/adjuvant standard of care chemotherapy will be counted as 1 line of systemic therapy if given for metastatic disease. Otherwise, neoadjuvant/adjuvant chemotherapy for localized disease does not apply towards the limitation regarding prior lines of systemic therapy.
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- Patients must have a performance status corresponding to ECOG scores of 0, 1 or 2 (Karnofsky ≥60%).
- Weight >/= 40 kg.
- Patients must have measurable disease per RECIST v1.1
- Prior radiation will be allowed assuming there is measurable disease based upon RECIST 1.1 and at least 21 days from the completion of all radiation prior to initiation of study treatment. (Note: Previously irradiated lesions can be considered as measurable disease only if progressive disease has been unequivocally documented at that site since radiation)
- Hematological function, as follows:
- Absolute neutrophil count (ANC) ≥ 1500/mm3 (growth factor/G-CSF permitted)
- Platelet count ≥ 100,000/mm3
- Hemoglobin > 9 g/dL.
- INR ≤ 1.5 and activated partial thromboplastin time (aPTT) < 1.2 x upper limit of normal (ULN), except subjects on anticoagulation.
- Renal function as follows: calculated creatinine clearance ≥ 40 mL/min (≥ 0.67 mL/sec) using the Cockcroft Gault equation.
- Hepatic function as follows: aspartate aminotransferase (AST) and alanine aminotransferase (ALT) < 3 x ULN and total bilirubin ≤ 1.5 x ULN (for subjects with Gilberts's disease ≤ 3 x ULN), serum albumin ≥ 2.
- All patients must agree to consent and co-enroll on MD Anderson MOSAIC protocol to allow for sample collection and correlative studies
- For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated.
- Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load.
- Patients with treated brain metastases are eligible if follow-up brain imaging after central nervous system (CNS)-directed therapy shows no evidence of progression.
- Patients with a prior malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial.
- Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better.
- Female subjects of childbearing potential must not be pregnant at screening. Female subjects are considered to be of childbearing potential unless one of the following criteria is met: permanent sterilization (hysterectomy, bilateral salpingectomy, or bilateral oophorectomy) or documented postmenopausal status (defined as 12 months of amenorrhea in a woman > 45 years-of-age in the absence of other biological or physiological causes. In addition, females < 55 years-of-age must have a serum follicle stimulating hormone [FSH] level > 40 mIU/mL to confirm menopause). Note: Documentation may include review of medical records, medical examination, or medical history interview by study site staff.
- Sexually active fertile subjects and their partners must agree to use highly effective method of contraception (hormonal or barrier method of birth control, intrauterine device, tubal ligation or hysterectomy, subject/partner post vasectomy, implantable or injectable contraceptives, condoms, or abstinence) prior to study entry and for the duration of study participation. (Refer to Pregnancy Assessment Policy MD Anderson Institutional Policy # CLN1114). This includes all female patients, between the onset of menses (as early as 8 years of age) and 55 years unless the patient presents with an applicable exclusionary factor which may be one of the following:
- Postmenopausal (no menses in greater than or equal to 12 consecutive months).
- History of hysterectomy or bilateral salpingo-oophorectomy.
- Ovarian failure (Follicle Stimulating Hormone and Estradiol in menopausal range, who have received Whole Pelvic Radiation Therapy).
- History of bilateral tubal ligation or another surgical sterilization procedure.
- In addition, men must agree not to donate sperm through 96 days after the last dose of zanzalintinib and women (WOCBP) must agree not to donate effs (ova, oocyte) for the purpose of reproduction for at least 186 days after the last dose of zanalintinib.
- Ability to understand and the willingness to sign a written informed consent document.
Who cannot join
- Prior treatment with zanzalintinib.
- Patients with primary soft tissue sarcoma with metastasis to bone.
- o Patients with histologically confirmed Ewing's sarcoma with either bone or soft tissue primary site are eligible for enrollment in Cohort B
- Patients with known sensitivity to the study agents and/or previously identified allergy or hypersensitivity to components of treatment
- Patients previously treated with other VEGF-targeted TKIs (including but not limited to cabozantinib, regorafenib, pazopanib, or similar).
- Receipt of any small molecule kinase inhibitor (including investigational within 2 weeks before first dose of study treatment.
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- Untreated central nervous system metastatic disease, leptomeningeal disease, or cord compression.
- Active infection requiring intravenous (IV) antibiotics within 2 weeks of study enrollment.
- Prior receipt of an investigational study drug and/or procedure within 21 days of study day 1.
- Anti-tumor therapy within 21 days of study day 1 including chemotherapy, antibody therapy, or other investigational agent.
- Radiation therapy for bone metastasis within 2 weeks, any other radiation therapy within 4 weeks, or systemic treatment with radionuclides within 6 weeks before first dose of study treatment; ongoing clinically relevant complications from prior radiation therapy are not eligible.
- Any complementary medicine such as herbal supplements, Chinese medicines, or other non-prescription medications being used for the treatment of bone sarcoma within 2 weeks prior to first dose of treatment as detailed in section5.5.
- History of cardiac disease: congestive heart failure New York Heart Association (NYHA) class > II, unstable angina (angina symptoms at rest), new-onset angina (within the past 6 months before study entry), myocardial infarction within the past 6 months before study entry.
- Uncontrolled hypertension defined as sustained blood pressure (BP) > 140 mm Hg systolic or > 90 mm Hg diastolic despite optimal antihypertensive treatment
- Moderate or severe hepatic impairment, i.e. Child-Pugh class B or C.
- Patients with known human immunodeficiency virus (HIV) infection with detectable viral load.
- HIV-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
- Known infection with acute or chronic hepatitis B or C.
- History of solid organ or allogeneic stem cell transplant
- Any other known concurrent or prior malignancy at time of or within 2 years of first does of study treatment. Prior malignancy that is in remission or otherwsie has not required treatment in > 2 years will be permitted.
- Stroke (including transient ischemic attack [TIA]), myocardial infarction (MI), or other ischemic event, or thromboembolic event (e.g., deep venous thrombosis, pulmonary embolism) within 6 months before first dose of study treatment.
- Pulmonary embolism (PE) or deep vein thrombosis (DVT) or prior clinically significant venous events within 3 months before first dose of study treatment. Note, patients with a diagnosis of incidental, subsegmental PE or DVT within 6 months are allowed if stable, asymptomatic, and treated with a stable dose of permitted anticoagulation (see exclusion criterion) for at least 1 week before first dose of study treatment.
- Gastrointestinal (GI) disorders including those associated with a high risk of perforation or fistula formation:
- Tumors invading the GI-tract from external viscera
- Active peptic ulcer disease, inflammatory bowel disease, diverticulitis, cholecystitis, symptomatic cholangitis or appendicitis, or acute pancreatitis
- Acute obstruction of the bowel, gastric outlet, or pancreatic or biliary duct within 6 months before first dose unless cause of obstruction is definitively managed and asymptomatic
- Abdominal fistula, GI perforation, bowel obstruction, or intra-abdominal abscess within 6 months of the first dose. Note, complete healing of an intra-abdomninal abscess must be confirmed before first dose of study treatment
- Known gastric or esophageal varices
- Ascites, pleural effusion, or pericardial effusion requiring drainage in last 4 weeks
- Clinically significant hematuria, hematemesis, or hemoptysis of > 0.5 teaspoon (2.5 ml) of red blood, or other history of significant bleeding (eg, pulmonary hemorrhage) within 12 weeks before first dose of study treatment.
- Symptomatic cavitating pulmonary lesion(s) or endobronchial disease. Note, asymptomatic or radiated lesions allowed
- Lesions invading major blood vessel including but not limited to inferior vena cava, pulmonary artery, or aorta. Note, patients with intravascular tumor extension (i.e. tumor thrombus in renal vein or inferior vena cava) may be eligible following Principal Investigator approval
- Other clinically significant disorders that would preclude safe study participation:
- Serious non-healing wound, ulcer, or bone fracture. Note, non-healing wounds or ulcers may be permitted if due to tumor associated skin lesions
- Malabsoprtion syndromes
- Pharmacologically uncompensated, symptomatic hypothyroidism
- Requirement for hemodialysis or peritoneal dialysis
- History of solid organ or allogeneic stem cell transplant
- Major surgery (i.e. GI surgery, removal or biopsy of brain metastasis) within 8 weeks prior to first dose of study treatment. Prior laproscopic surgeries withint 4 weeks prior to first dose of study treatment. Minor surgery (i.e. simple excision, tooth extraction) within 5 days before first dose of study treatment. Complete wound healing from major or minor surgery must have occurred at least prior to first dose of study treatment. Note, fresh/pre-treatment tumor biopsies should be completed at least 5 days prior to the first dose of study treatment. Patients with clinically relevant ongoing complications of prior surgical procedures, including biopsies, are not eligible.
- Corrected QT interval calculated by the Fridericia formula (QTcF) > 470 ms within 14 days per electrocardiogram (ECG) before first dose of study treatment. Note: Triplicate ECG evaluations will be performed and the average of these 3 consecutive results for QTcF will be used to determine eligibility.
- Patients with psychiatric illness/social situations that would limit compliance with study requirements.
- Pregnant or lactating women are excluded from this study because zanzalintinib is an agent with the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with zanzalintinib, breastfeeding should be discontinued if the mother is treated with zanzalintinib. These potential risks may also apply to other agents used in this study.
- Inability to swallow tablets or ingest a suspension either orally or by nasogastric (NG) or gastronomy (PEG) tube.
- Concomitant anticoagulation with oral anticoagulants (eg, warfarin, direct thrombin inhibitors ) and platelet inhibitors (eg, clopidogrel). Allowed anticoagulants are the following:
- Prophylactic use of low-dose aspirin for cardio-protection (per local applicable guidelines) and low-dose low molecular weight heparins (LMWH).
- Therapeutic doses of LMWH or anticoagulation with direct factor Xa inhibitors rivaroxaban, edoxaban, or apixaban in subjects without known brain metastases who are on a stable dose of the anticoagulant for at least 1 week before first dose of study treatment without clinically significant hemorrhagic complications from the anticoagulation regimen.
- Note, Subjects must have discontinued prohibited oral anticoagulants at least 3 days or 5 half-lives prior to the first dose of study treatment, whichever is longer
- Proteinuria > 1g/day.
- Other conditions, which in the opinion of the investigator, would compromise the safety of the patient's ability to complete the study
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
The University of Texas M. D. Anderson Cancer Center
Houston, Texas, 77030
John Livingston, MD, 713-792-3626, jalivingston@mdanderson.org
John Livingston, MD
About this study
To study the treatment efficacy of zanzalintinib monotherapy in patients with advanced and/or metastatic bone sarcomas.
Read the detailed description
Primary Objectives:
- For cohort A (osteosarcoma) progression-free survival (PFS) rate at 16 weeks (PFS16 weeks)
- For cohort B (Ewing sarcoma), cohort C (chondrosarcoma), and cohort D (other bone sarcomas), progression-free survival (PFS) at 12 weeks (PFS12 weeks).
Secondary Objectives:
- To estimate the objective response rate (ORR) within each cohort by RECIST 1.1 criteria.
- To estimate the progression-free survival (PFS) and overall survival in patients with locally advanced or metastatic bone sarcomas receiving zanzalintinib.
- To evaluate the safety and tolerability of zanzalintinib within each cohort and across cohorts as assessed by toxicity rates according to CTCAE version 5.0 criteria.
Exploratory Objectives:
To determine the expression of selected biomarkers in pre-treatment and on-treatment tumor biopsy specimens and correlate with clinical benefit within each cohort and across cohorts
- Conditions
- Bone Sarcomas
- Being tested
- Zanzalintinib
- Medical subject headings
- Bone Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ZanzalintinibDrug
Also called XL092
Participants will take zanzalintinib 100mg daily by mouth
| Study group | Role | What they receive |
|---|---|---|
| Phase 2 Cohorts A, B, C, D: Treatment with Zanzalintinib | Experimental | Four cohorts of patients based on biology of the disease will be included in this trial: Receives: Drug: Zanzalintinib |
What is being measured
The primary outcome is the main question the study is designed to answer.
Safety and Adverse Events (AEs)
Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0
Measured: Through study completion; an average of 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Sep 2025
- Study start5 Dec 2025
- Primary completion31 Oct 2029 (estimated)
- Study completion31 Oct 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Bone SarcomasStudies of the same condition, open and under way.
- More trials run by M.D. Anderson Cancer CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 70 participants (estimated)
Sponsor and investigators
- Lead sponsor
- M.D. Anderson Cancer Center
- Sponsor type
- University, hospital or other
- Collaborators
- Exelixis
- Responsible party
- Sponsor
- Investigators
- John Livingston, MD, Principal investigator, M.D. Anderson Cancer Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07193550
- Sponsor's protocol ID
- 2025-0912
- Other IDs
- NCI-2025-07295
- Status last verified
- Sep 2026
- First submitted
- 24 Sep 2025
- Last updated
- 25 Sep 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 2 Trial of Zanzalintinib in Advanced/Metastatic Bone Sarcomas (ZAMBONE)
- ClinicalTrials.gov ID
- NCT07193550
- Acronym / sponsor ID
- 2025-0912
- Conditions
- Bone Sarcomas
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 70 participants (estimated)
- Lead sponsor
- M.D. Anderson Cancer CenterUniversity, hospital or other
- Collaborators
- Exelixis
- Study start
- 5 Dec 2025 (actual)
- Primary completion
- 31 Oct 2029 (estimated)
- Study completion
- 31 Oct 2031 (estimated)
- First posted
- 26 Sep 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To study the treatment efficacy of zanzalintinib monotherapy in patients with advanced and/or metastatic bone sarcomas.
Detailed description
Primary Objectives:
- For cohort A (osteosarcoma) progression-free survival (PFS) rate at 16 weeks (PFS16 weeks)
- For cohort B (Ewing sarcoma), cohort C (chondrosarcoma), and cohort D (other bone sarcomas), progression-free survival (PFS) at 12 weeks (PFS12 weeks).
Secondary Objectives:
- To estimate the objective response rate (ORR) within each cohort by RECIST 1.1 criteria.
- To estimate the progression-free survival (PFS) and overall survival in patients with locally advanced or metastatic bone sarcomas receiving zanzalintinib.
- To evaluate the safety and tolerability of zanzalintinib within each cohort and across cohorts as assessed by toxicity rates according to CTCAE version 5.0 criteria.
Exploratory Objectives:
To determine the expression of selected biomarkers in pre-treatment and on-treatment tumor biopsy specimens and correlate with clinical benefit within each cohort and across cohorts
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Phase 2 Cohorts A, B, C, D: Treatment with Zanzalintinib | Experimental | Drug: ZanzalintinibFour cohorts of patients based on biology of the disease will be included in this trial: |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (31 listed)
- Patients ≥ 18 years old with pathologically confirmed unresectable locally advanced or metastatic bone sarcoma in one of the following categories: Cohort A - Osteosarcoma, Cohort B - Ewing sarcoma, Cohort C - Chondrosarcoma (conventional, grades 2-3), Cohort D - Other primary sarcoma of bone including but not limited to dedifferentiated chondrosarcoma, undifferentiated pleomorphic sarcoma (UPS) of bone, chordoma, and non-Ewing's round cell sarcomas of bone.
- chondrosarcoma, undifferentiated pleomorphic sarcoma (UPS) of bone, chordoma, and non-Ewing's round cell sarcomas of bone.
- Patients with conventional chondrosarcoma (Cohort C) must demonstrate evidence of disease progression by RECIST 1.1 within 12 weeks of trial enrollment
- Multi-agent and/or alternating neoadjuvant/adjuvant standard of care chemotherapy will be counted as 1 line of systemic therapy if given for metastatic disease. Otherwise, neoadjuvant/adjuvant chemotherapy for localized disease does not apply towards the limitation regarding prior lines of systemic therapy.
- Absolute neutrophil count (ANC) ≥ 1500/mm3 (growth factor/G-CSF permitted)
Key exclusion criteria (49 listed)
- Prior treatment with zanzalintinib.
- Patients with primary soft tissue sarcoma with metastasis to bone.
- o Patients with histologically confirmed Ewing's sarcoma with either bone or soft tissue primary site are eligible for enrollment in Cohort B
- Patients with known sensitivity to the study agents and/or previously identified allergy or hypersensitivity to components of treatment
- Patients previously treated with other VEGF-targeted TKIs (including but not limited to cabozantinib, regorafenib, pazopanib, or similar).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ZanzalintinibAlso: XL092Participants will take zanzalintinib 100mg daily by mouth | Drug | Phase 2 Cohorts A, B, C, D: Treatment with Zanzalintinib |
Primary outcome
Safety and Adverse Events (AEs)
Time frame: Through study completion; an average of 1 year
Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Sep 2026.
- MD Anderson Cancer Center WebsiteLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
John Livingston, MD principal investigator
M.D. Anderson Cancer Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Zanzalintinib in people with Bone Sarcomas, run by M.D. Anderson Cancer Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 31 inclusion and 49 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 25 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact John Livingston, MD ((713) 792-3626, jalivingston@mdanderson.org), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Safety and Adverse Events (AEs) (time frame: Through study completion; an average of 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Sep 2026.