Cabozantinib Combined With PD-1 and CTLA-4 Inhibition in Metastatic Soft Tissue Sarcoma

  • End date
    Jan 31, 2028
  • participants needed
  • sponsor
    Washington University School of Medicine
Updated on 26 November 2021


The hypothesis of this study is that the response rate of soft tissue sarcoma will be improved with the addition of PD-1 and CTLA-4 inhibition to cabozantinib, and that cabozantinib priming will increase the response to nivolumab and ipilimumab.

Condition Metastatic Soft Tissue Sarcoma
Treatment Ipilimumab, Nivolumab, Cabozantinib
Clinical Study IdentifierNCT04551430
SponsorWashington University School of Medicine
Last Modified on26 November 2021


Yes No Not Sure

Inclusion Criteria

Histologically or cytologically confirmed metastatic or unresectable soft tissue sarcoma
Measurable disease defined as lesions that can be accurately measured in at least one dimension (longest diameter to be recorded) as 10 mm with CT scan, as 20 mm by chest x-ray, or 10 mm with calipers by clinical exam
Refractory to at least one and no more than two lines of therapy, with progression of last line of therapy. Neoadjuvant or adjuvant therapy completed > one year ago would not be counted toward these two lines of therapy. Any inappropriate therapies (ie hormonal therapies) should be discussed with the PI to determine if they are to be counted toward the two lines of therapy
At least 18 years of age
ECOG performance status 1
Normal bone marrow and organ function as defined below
Absolute neutrophil count 1,500/mm3 without granulocyte colony-stimulating factor support
White blood cell count 2,000/mm3
Platelets 100,000/mm3 without transfusion
Hemoglobin 9.0 g/dL
Total bilirubin 1.5 x IULN (for subjects with Gilbert's disease, 3.0 x IULN)
AST(SGOT), ALT(SGPT), and alkaline phosphatase (ALP) 3.0 x IULN; ALP 5.0 x IULN with documented bone metastases
Serum albumin 2.8 g/dl
Serum creatinine 1.5x IULN or calculated creatinine clearance 40 mL/min by MDRD
Urine protein/creatinine ration (UPCR) 1 mg/mg ( 113.2 mg/mmol)
PT/INR or PTT < 1.3 x IULN (within 7 days before first dose of study treatment, if not receiving any anticoagulation therapy)
Corrected QT interval calculated by the Fridericia formula (QTcF) 500 ms (by ECG within 14 days before the first dose of study treatment)
Lesion amenable to biopsy for assessment of PD-L1 expression if no archival tissue is available
Recover to baseline or grade 1 from toxicities related to any prior treatments, unless AE(s) are clinically non-significant and/or stable on supportive therapy
The effects of cabozantinib on the developing human fetus are unknown. For this reason, women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control, abstinence) prior to study entry, for the duration of study participation, and for 5 months after the last dose of study treatment. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of the study, and for at least 7 months after the last dose of study treatment
Ability to understand and willingness to sign an IRB approved written informed consent document (or that of legally authorized representative, if applicable)

Exclusion Criteria

Translocation-driven sarcoma except for ASPS
Previous treatment with cabozantinib or a PD-1 inhibitor (eg, cemiplimab, nivolumab, pembrolizumab), PD-L1 inhibitor (eg, atezolizumab, avelumab, durvalumab), or CTLA-4 inhibitor (eg, ipilimumab)
A history of other malignancy with the exception of malignancies for which all treatment was completed at least 2 years before registration and the patient has no evidence of disease. Exceptions include basal cell or squamous cell carcinoma of the skin which were treated with local resection only or carcinoma in situ of the cervix, or other tumors discussed with the study PI
Currently receiving any other investigational agents
Known brain metastases. Patients with known brain metastases must be excluded from this clinical trial because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events
Receipt of any type of small molecule kinase inhibitor (including investigational kinase inhibitor) within 2 weeks before first dose of study treatment
Receipt of any type of cytotoxic, biologic or other systemic anticancer therapy (including investigational) within 4 weeks before first dose of study treatment
Concomitant anticoagulation with coumarin agents (e.g., warfarin), direct thrombin inhibitors (e.g., dabigatran), direct factor Xa inhibitor betrixaban, or platelet inhibitors (e.g., 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 or the tumor
Radiation therapy for bone metastasis within 2 weeks, any other radiation therapy within 4 weeks before first dose of study treatment. Systemic treatment with radionuclides within 6 weeks before the first dose of study treatment. Subjects with clinically relevant ongoing complications from prior radiation therapy are not eligible
A history of allergic reactions attributed to compounds of similar chemical or biologic composition to cabozantinib, nivolumab, ipilimumab, or other agents used in the study
Inability to swallow tablets
The subject has uncontrolled, significant intercurrent or recent illness including, but not limited to, the following conditions
Cardiovascular disorders
Congestive heart failure New York Heart Association Class 3 or 4, unstable angina pectoris, serious cardiac arrhythmias
Uncontrolled hypertension defined as sustained blood pressure (BP) > 140 mm Hg systolic or > 90 mm Hg diastolic despite optimal antihypertensive treatment
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
Subjects with a diagnosis of incidental, subsegmental PE or DVT within 6 months are allowed if stable, asymptomatic, and treated with anticoagulation 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
The subject has evidence of tumor invading the GI tract, active peptic ulcer disease, inflammatory bowel disease (e.g., Crohn's disease), diverticulitis, cholecystitis, symptomatic cholangitis or appendicitis, acute pancreatitis, acute obstruction of the pancreatic duct or common bile duct, or gastric outlet obstruction
Abdominal fistula, GI perforation, bowel obstruction, or intra-abdominal abscess within 6 months before first dose
Note: Complete healing of an intra-abdominal abscess must be confirmed before first dose
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
Cavitating pulmonary lesion(s) or known endotracheal or endobronchial disease manifestation
Lesions invading or encasing any major blood vessels
Other clinically significant disorders that would preclude safe study participation
Serious non-healing wound/ulcer/bone fracture
Uncompensated/symptomatic hypothyroidism
Moderate to severe hepatic impairment (Child-Pugh B or C)
Any active, known, or suspected autoimmune disease Note: subjects with type I diabetes mellitus, hypothyroidism only requiring hormone replacement, skin disorders (such as vitiligo, psoriasis, or alopecia) not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll
Any condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days of randomization Note: inhaled, intranasal, intra-articular, or topical steroids are permitted. Adrenal replacement steroid doses > 10 mg daily prednisone equivalent are permitted in the absence of active autoimmune disease. Transient short-term use of systemic corticosteroids for allergic conditions (e.g. contrast allergy) is also allowed
Active infection requiring systemic treatment. Acute or chronic hepatitis B or C infection, known human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS)-related illness, or known positive test for tuberculosis infection
History of idiopathic pulmonary fibrosis, organizing pneumonia, drug-induced pneumonitis, or evidence of active pneumonitis on screening chest CT scan
Malabsorption syndrome
Requirement for hemodialysis or peritoneal dialysis
History of solid organ or allogeneic stem cell transplant
Major surgery (e.g. GI surgery removal or biopsy of brain metastasis) within 8 weeks before first dose of study treatment. Complete wound healing from major surgery must have occurred 1 month before first dose and from minor surgery (e.g., simple excision, tooth extraction) at least 10 days before first dose. Patients with clinically relevant ongoing complications from prior surgery are not eligible
Pregnant and/or breastfeeding. Women of childbearing potential must have a negative pregnancy test within 15 days of study entry. Women of childbearing potential are defined as premenopausal females capable of becoming pregnant (i.e., females who have had any evidence of menses in the past 12 months, with the exception of those who had prior hysterectomy). However, women who have been amenorrheic for 12 or more months are still considered to be of childbearing potential if the amenorrhea is possibly due to prior chemotherapy, antiestrogens, low body weight, ovarian suppression, or other reasons
Administration of a live, attenuated vaccine within 30 days prior to randomization
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note