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About
This phase II trial tests how well cemiplimab and transarterial radioembolization (TARE) with yttrium-90 (Y90) SIR-Spheres, registered trademark, works in treating breast cancer that has spread from where it first started (primary site) to the liver (metastatic). Immunotherapy with monoclonal antibodies, such as cemiplimab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. TARE is a treatment that uses radioactive microspheres, such as Y90 SIR-S Spheres, to both cause hepatic artery embolization and to deliver regional radiotherapy. Y90 SIR-S Spheres is an injectable form of the radioisotope yttrium Y 90 encapsulated in resin microspheres. When injected into the artery supplying the tumor, yttrium Y 90 resin microspheres block the tumor blood vessels and deliver the yttrium Y 90 directly to the tumor site, which may kill or slow tumor growth. Giving cemiplimab and Y90 SIR-Spheres by TARE to the tumor in the liver may kill more tumor cells in patients with metastatic breast cancer.
Full description
PRIMARY OBJECTIVE:
I. To describe the effect of cemiplimab and yttrium Y90 resin microspheres (90Y TARE) on immune activation in the treated tumor based on CD8+ T cells.
SECONDARY OBJECTIVES:
I. To evaluate other measures of changes (both in treated and untreated lesions after the first TARE treatment) in the tumor microenvironment (TME) of 10 metastatic breast cancer (MBC) patients with liver-dominant disease.
II. To identify systemic immune activation in the peripheral blood. III. To determine the safety and tolerability of cemiplimab and hepatic radioembolization in patients with liver dominant metastatic breast cancer using Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 criteria.
IV. To evaluate objective tumor response of the target lesion treated with Y90 by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 and modified RECIST (mRECIST).
OUTLINE:
Patients receive cemiplimab intravenously (IV) over 30 minutes on day 1 of each cycle. Cycles repeat every 21 days for up to 1 year in the absence of disease progression or unacceptable toxicity. Patients receive Y90 SIR-Spheres intratumorally via TARE over 60-90 minutes once during days 7-14 and on day 67. Patients also undergo tumor biopsy at baseline and at day 42 after immunotherapy begins. Additionally patients also undergo blood sample collection and computed tomography (CT) or magnetic resonance imaging (MRI) throughout the study.
After completion of study treatment, patients are followed up at 30 days, every 3 months within 1 year of start of treatment, and then every 6 months for up to 2 years.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
Documented informed consent of the participant and/or legally authorized representative.
Agreement to allow the use of archival tissue from diagnostic tumor biopsies
Age: ≥ 18 years
Eastern Cooperative Oncology Group (ECOG) 0-1
Must have a life expectancy of at least 12 weeks
Evidence of post-menopausal status or negative urinary or serum pregnancy test for female pre-menopausal patients. Women will be considered post-menopausal if they have been amenorrheic for 12 months without an alternative medical cause. The following age-specific requirements apply:
Male patients must be surgically sterile, or if sexually active and having a pre-menopausal female partner then must be using an acceptable form of contraception
Patients with metastatic breast cancer, previously treated with ≥ 1 line of chemotherapy in metastatic setting
Candidate for TARE based on evaluation by board certified interventional radiologist; must have measurable metastatic liver disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as outlined in RECIST version 1.1; not all liver tumors will be treated with TARE in a single session
Liver tumor burden < 50%
No radiographic or clinical evidence of cirrhosis
Other treated stable metastases are allowed, including treated stable brain metastases
Fully recovered from the acute toxic effects (except alopecia) to ≤ grade 1 to prior anti-cancer therapy
Body weight > 30 kg
No untreated, active hepatitis
Hemoglobin ≥ 9.0 g/dL (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Absolute neutrophil count (ANC) ≥ 1500/uL (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Platelet count ≥ 75000/uL (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Total bilirubin < 2.0mg/dL (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Aspartate aminotransferase (AST/serum glutamic oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT/serum glutamic pyruvic transaminase [SGPT]) ≤ 5 x upper limit of normal (ULN) (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Albumin ≥ 2.8 g/dL (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
International normalized ration (INR) ≤ 1.6 (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Measured creatinine clearance (CL) > 40 mL/min or calculated creatinine CL > 40 mL/min by the Cockcroft-Gault formula (Cockcroft and Gault 1976) or by 24-hour urine collection for determination of creatinine clearance (within 14 days prior to day 1 of protocol therapy unless otherwise stated)
Exclusion criteria
Prior immunotherapy in the past 12 months
Progressing or untreated extra-hepatic metastatic disease
Autoimmune disease requiring therapy; immunodeficiency, or any disease process requiring immunosuppressive therapy
Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures
Portal vein invasion
Evidence of diffuse metastatic disease (tumor burden occupying > 50% of liver)
Major surgical procedure (as defined by the investigator) within 28 days prior to radioembolization. Note: Local surgery of isolated lesions for palliative intent is acceptable
Participation in another clinical study with an investigational product during the last 4 weeks
Concurrent enrollment in another clinical study, unless it is an observational (non-interventional) clinical study or during the follow-up period of an interventional study
Receipt of the last dose of anticancer therapy (chemotherapy, immunotherapy, endocrine therapy, targeted therapy, biologic therapy, tumor embolization, monoclonal antibodies) ≤ 28 days prior to the first dose of study drug. If sufficient wash-out time has not occurred due to the schedule or pharmacokinetics (PK) properties of an agent, a longer wash-out period will be required, as agreed by Regeneron and the investigator
Prior exposure to anti-PD-1/PD-L1 inhibitor or anti-CTLA4 inhibitor, including cemiplimab in the past 12 months
Any unresolved toxicity National Cancer Institute (NCI) CTCAE grade ≥ 2 from previous anticancer therapy with the exception of alopecia, vitiligo, and the laboratory values defined in the inclusion criteria
Patients with grade ≥ 2 neuropathy will be evaluated on a case-by-case basis after consultation with the study physician
Patients with irreversible toxicity not reasonably expected to be exacerbated by treatment with cemiplimab may be included only after consultation with the study physician
Active or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease [e.g., colitis or Crohn's disease], diverticulitis [with the exception of diverticulosis], systemic lupus erythematosus, sarcoidosis syndrome, or Wegener syndrome [granulomatosis with polyangiitis, Graves disease, rheumatoid arthritis, hypophysitis, uveitis, etc.]). The following are exceptions to this criterion: Patients with vitiligo or alopecia; patients with hypothyroidism (e.g., following Hashimoto syndrome) stable on hormone replacement; any chronic skin condition that does not require systemic therapy; patients without active disease in the last 5 years may be included but only after consultation with the study physician; patients with celiac disease that is controlled by diet alone
History of allogeneic organ transplantation
Expected radiation lung dose of > 30Gy
Uncontrolled intercurrent illness, including but not limited to, ongoing or active infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable angina pectoris, cardiac arrhythmia, interstitial lung disease, serious chronic gastrointestinal conditions associated with diarrhea, or psychiatric illness/social situations that would limit compliance with study requirement, substantially increase risk of incurring adverse events (AEs) or compromise the ability of the patient to give written informed consent
History of another primary malignancy except for:
History of active primary immunodeficiency or acquired human immunodeficiency virus (HIV/AIDS)
Receipt of live attenuated vaccine within 30 days prior to the first dose of study treatment. Note: Patients, if enrolled, should not receive live vaccine whilst receiving study treatment and up to 30 days after the last dose of study treatment
Active systemic infection including tuberculosis (clinical evaluation that includes clinical history, physical examination and radiographic findings, and tuberculosis (TB) testing in line with local practice. Use of antibiotics to treat superficial infection or contamination of tumor shall not, by itself, be considered evidence of infection
History of leptomeningeal carcinomatosis
Known allergy or hypersensitivity to any of the study drugs or any of the study drug excipients
Any concurrent chemotherapy, intraperitoneal (IP), biologic, or hormonal therapy for cancer treatment. Concurrent use of hormonal therapy for non-cancer-related conditions (e.g., hormone replacement therapy) is acceptable
Current or prior use of immunosuppressive medication within 14 days before the first dose of cemiplimab. The following are exceptions to this criterion: Intranasal, inhaled, topical steroid or local steroid injections (e.g., intra articular injection); systemic corticosteroids at physiologic doses not to exceed 10 mg/day of prednisone or its equivalent; steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication)
Female patients who are pregnant or breastfeeding or male or female patients of reproductive potential who are not willing to employ effective birth control from screening to 120 days (4 months) after the last dose of cemiplimab therapy or 120 days (4 months) days after the last TARE, whichever is longer
Female subjects, unless postmenopausal or surgically sterile, unwillingness to practice effective contraception, as per investigator discretion during the study. The rhythm method is not to be used as the sole method of contraception
Male subjects, unwillingness to practice effective contraception (per Investigator discretion) while taking part in this study, because the effects of the SIR-Spheres treatment on sperm or upon the development of an unborn child are unknown
Inability or unwillingness to understand or sign a written informed consent document
Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)
Presence of cardiovascular disease, as defined by:
Any condition that requires ongoing/continuous corticosteroid therapy (> 10 mg prednisone/day or anti-inflammatory equivalent) within 1 week prior to the first dose of study medication. Participants who require a brief course of steroids (up to 2 days in the week before enrollment) or physiologic replacement are not excluded
Ongoing or recent evidence of significant autoimmune disease that required treatment with systemic immunosuppressive treatments
Note: The following are not exclusionary: vitiligo, childhood asthma that has resolved, endocrinopathies (such as hypothyroidism or type 1 diabetes) that require only hormone replacement, or psoriasis that does not require systemic treatment
Any infection requiring hospitalization or treatment with IV anti-infectives within 2 weeks of first dose of study medication
Uncontrolled infection with HIV, hepatitis B or hepatitis C infection, diagnosis of immunodeficiency, and/or tuberculosis (active or latent)
Receipt of a live vaccine within 4 weeks of start of study medication
Receipt of COVID-19 vaccination within 1 week of planned start of study medication or for which the planned COVID-19 vaccinations would not be completed 1 week prior to start of study medication
Known hypersensitivity to the active substances or to any of the excipients
Women of childbearing potential (WOCBP) and men who are unwilling to practice highly effective contraception prior to the initial dose/start of the first treatment, during the study, and for at least 6 months after the last dose. Highly effective contraceptive measures include:
Periodic abstinence (calendar, symptothermal, post-ovulation methods), withdrawal (coitus interruptus), spermicides only, and lactational amenorrhea method are not acceptable methods of contraception. Female condom and male condom should not be used together
Primary purpose
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11 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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