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About
This phase 2 clinical trial will evaluate the efficacy of the combination of pemetrexed and sorafenib in patients with recurrent or metastatic Triple Negative Breast Cancer (TNBC). Candidate pharmacodynamic and predictive biomarkers will also be evaluated.
Full description
This study is a single-arm, open-label, phase 2 study of a regimen of dose-dense pemetrexed and sorafenib to determine the objective response rate in patients with recurrent or metastatic TNBC. Eligible patients will be those who have had disease progression during or after treatment for recurrent or metastatic disease with one previous cytotoxic chemotherapy regimen. Additionally, patients with disease progression or recurrence during or within 6 months of completion of adjuvant or neoadjuvant therapy are also eligible. Correlative studies will be conducted using blood samples and archived tumor samples.
Simon's two-stage design will be utilized in this study. In the first stage, if there are ≤ 3 patients of the first 18 efficacy-evaluable patients who have a partial or complete response, then the trial will end for futility. If ≥ 4 patients have a partial or complete response, patient accrual will continue in the second stage to add 10 more efficacy-evaluable patients.
The total sample size for the Simon's two-stage design is 35 patients. Based on enrollment of 2-3 patients per month, the expected enrollment period will be about 12-18 months.
Patients were enrolled in 2 sequential groups, referred to as "arms" for the purposes of reporting results by group. The initial group of patients were enrolled in what is referred to here as Arm A. After a study amendment patients were enrolled in what is referred to here as Arm B.
Enrollment
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Inclusion and exclusion criteria
Inclusion Criteria
Exclusion Criteria
Any investigational agent within 4 weeks prior to initiating study treatment
Anticancer therapy within 2 weeks prior to initiating study treatment
Plans for concurrent anticancer therapy except as permitted in Section 6.7.11
Known or presumed intolerance of pemetrexed or sorafenib
Known or suspected malabsorption condition or obstruction
Brain metastases meeting either of the following exclusion criteria:
Untreated brain metastases
After completion of brain-directed therapy, the patient has not been able to tolerate discontinuation of steroids or a decrease in steroid dose
Leptomeningeal metastasis
Any documented history of clinically identifiable thrombotic, embolic, venous, or arterial events such as cerebrovascular accident, transient ischemic attack, deep vein thrombosis, or pulmonary embolism within 6 months prior to initiating study treatment (Note: Patients with an asymptomatic catheter-related thrombus or a tumor-associated thrombus of locally-involved vessels or with incidental asymptomatic filling defects identified on imaging are not excluded.)
Contraindication to antiangiogenic agents, including:
Serious non-healing wound, non-healing ulcer, or bone fracture
Major surgical procedure or significant traumatic injury within 4 weeks prior to initiating study treatment
Pulmonary hemorrhage/bleeding event ≥ grade 2 (CTCAE v4.0) within 12 weeks prior to initiating study treatment
Any other hemorrhage/bleeding event ≥ grade 3 (CTCAE v4.0) within 12 weeks prior to initiating study treatment
Systolic blood pressure (BP) > 160 mmHg or diastolic BP > 100 mmHg despite optimal medical management
QT interval, corrected (QTc) > 480 ms (≥ grade 2) on a 12-lead electrocardiogram (ECG)
If baseline QTc on screening ECG is ≥ grade 2:
Check potassium and magnesium serum levels
Correct any identified hypokalemia and/or hypomagnesemia and repeat ECG to confirm exclusion of patient due to QTc
For patients with heart rate < 60 bpm or > 100 bpm, manual read of the QT interval by a cardiologist is required, with Fridericia correction applied to determine QT interval with correction using Fridericia's formula (QTcF) which must be used to determine eligibility (Note: If heart rate is 60-100 bpm, manual read of the QT interval and correction to QTcF is not required).
Active or clinically significant cardiac disease including any of the following:
Unstable angina (eg, anginal symptoms at rest) or onset of angina within 3 months prior to initiating study treatment
Myocardial infarction within 6 months prior to initiating study treatment
Ventricular arrhythmias requiring anti-arrhythmic therapy other than beta blockers
New York Heart Association (NYHA) class III or IV congestive heart failure
Serious (ie, ≥ grade 3) uncontrolled infection
Uncontrolled effusion
Known human immunodeficiency virus (HIV) seropositivity (Note: HIV testing is not required)
Chronic or active hepatitis B or C infection requiring treatment with antiviral therapy
Seizure disorder requiring enzyme-inducing anti-epileptic drugs (EIAEDs) (Note: If the seizure disorder can be managed with agents that are not EIAEDs (eg, levetiracetam or valproate), the patient should not be excluded).
Planned ongoing treatment with other drugs thought to potentially have adverse interactions with either of the study drugs; if such drugs have been used, patients must have discontinued these agents at least 2 weeks (or as noted below) prior to initiating study treatment. Examples include:
STRONG CYP3A4 inducers
*Note: Examples of clinical inducers of cytochrome p450 (CYP) isozymes and classification of strong, moderate, and weak interactions are available through the FDA website (Table 3-3 of website:): http://www.fda.gov/Drugs/DevelopmentApprovalProcess/DevelopmentResources/DrugInteractionsLabeling/ucm093664.htm
Immunosuppressants (eg, tacrolimus, leflunomide, tofacitinib, roflumilast, pimecrolimus)
NSAIDs (Note: NSAIDs must be discontinued within 5 days prior to initiating study treatment)
Pregnancy or breastfeeding
Previous malignancy with the following exceptions: adequately treated basal cell carcinoma or squamous cell carcinoma of the skin; any in situ malignancy; adequately treated Stage 1 and Stage 2 cancer from which the patient is currently in remission; any other cancer from which the patient has been disease-free for 3 years
Medical, psychological, or social condition that, in the opinion of the investigator, may increase the patient's risk or limit the patient's adherence with study requirements
Primary purpose
Allocation
Interventional model
Masking
13 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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