Pembrolizumab in Treating Patients With Advanced Uveal Melanoma

Study Overview
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Brief Summary
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This phase II trial studies how well pembrolizumab works in treating patients with uveal melanoma that has spread to other places in the body and usually cannot be cured or controlled with treatment. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells.

Detailed Description
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PRIMARY OBJECTIVES: I. To evaluate objective response rate (ORR) in patients with advanced uveal melanoma receiving pembrolizumab. SECONDARY OBJECTIVES: I. To evaluate progression-free survival (PFS) in patients with advanced uveal melanoma receiving pembrolizumab. II. To evaluate safety, tolerability and adverse experience profile of pembrolizumab in uveal melanoma. III. To evaluate overall survival (OS) in patients with advanced uveal melanoma receiving pembrolizumab. TERTIARY OBJECTIVES: I. To evaluate objective response rate (ORR; complete response + partial response) in patients with advanced uveal melanoma receiving pembrolizumab as stratified by programmed cell death-ligand 1 (PD-L1) expression and guanine nucleotide-binding protein (GNA)Q/GNA11 mutation status. II. To evaluate ORR in patients previously treated with ipilimumab or with mitogen-activated protein kinase kinase (MEK) inhibitors. OUTLINE: Patients receive pembrolizumab intravenously (IV) over 30 minutes on day 1. Treatment repeats every 3 weeks for 24 months in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days and then every 12 weeks.

Official Title
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A Multicenter Phase II Study to Evaluate the Safety and Efficacy of Pembrolizumab (MK-3475) in Patients With Advanced Uveal Melanoma

Conditions
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Stage IIIA Uveal Melanoma, Stage IIIB Uveal Melanoma, Stage IIIC Uveal Melanoma, Stage IV Uveal Melanoma

Intervention / Treatment
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* Biological: Pembrolizumab
* Other: Laboratory Biomarker Analysis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Be willing and able to provide written informed consent/assent for the trial Have measurable disease based on Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 Histologic confirmation of advanced (metastatic or unresectable) uveal melanoma. If uveal melanoma has been diagnosed clinically and/or by gene expression profiling, patients may be included following discussion with the principal investigator. Have provided tissue from an archival tissue sample or newly obtained core or excisional biopsy of a tumor lesion Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) performance scale Absolute neutrophil count (ANC) >= 1,500/mcL Platelets >= 100,000/mcL Hemoglobin >= 9 g/dL or >= 5.6 mmol/L Serum creatinine =< 1.5 X upper limit of normal (ULN) OR measured or calculated creatinine clearance (glomerular filtration rate [GFR] can also be used in place of creatinine or creatinine clearance [CrCl]) >= 60 mL/min for subject with creatinine levels > 1.5 X institutional ULN; creatinine clearance should be calculated per institutional standard Serum total bilirubin =< 1.5 X ULN OR direct bilirubin =< ULN for subjects with total bilirubin levels > 1.5 ULN Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 X ULN OR =< 5 X ULN for subjects with liver metastases International normalized ratio (INR) or prothrombin time (PT) =< 1.5 X ULN unless subject is receiving anticoagulant therapy as long as PT or partial thromboplastin time (PTT) is within therapeutic range of intended use of anticoagulants Activated partial thromboplastin time (aPTT) =< 1.5 X ULN unless subject is receiving anticoagulant therapy as long as PT or PTT is within therapeutic range of intended use of anticoagulants Female subject of childbearing potential should have a negative urine or serum pregnancy within 72 hours prior to receiving the first dose of study medication; if the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required Female subjects of childbearing potential should be willing to use 2 methods of birth control or be surgically sterile, or abstain from heterosexual activity for the course of the study through 120 days after the last dose of study medication; subjects of childbearing potential are those who have not been surgically sterilized or have not been free from menses for > 1 year Male subjects should agree to use an adequate method of contraception starting with the first dose of study therapy through 120 days after the last dose of study therapy Exclusion Criteria: Is currently participating in or has participated in a study of an investigational agent or using an investigational device within 4 weeks of the first dose of treatment Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment Has had a prior monoclonal antibody within 4 weeks prior to study day 1 or who has not recovered (i.e., =< grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier Has had prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to study day 1 or who has not recovered (i.e., =< grade 1 or at baseline) from adverse events due to a previously administered agent Note: subjects with =< grade 2 neuropathy are an exception to this criterion and may qualify for the study Note: if subject received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy Has a known additional malignancy that is progressing or requires active treatment; exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis; subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment), have no evidence of new or enlarging brain metastases, and are not using steroids for at least 7 days prior to trial treatment Has an active autoimmune disease requiring systemic treatment within the past 3 months or a documented history of clinically severe autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents; subjects with vitiligo or resolved childhood asthma/atopy would be an exception to this rule; subjects that require intermittent use of bronchodilators or local steroid injections would not be excluded from the study; subjects with hypothyroidism stable on hormone replacement or Sjögren's syndrome will not be excluded from the study Has evidence of interstitial lung disease or active, non-infectious pneumonitis Has an active infection requiring systemic therapy Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment Has received prior therapy with an anti-PD-1, anti-PD-L1, anti-PD-L2, or anti-cluster of differentiation (CD)137; patients who received anti-cytotoxic T-lymphocyte antigen 4 (CTLA4) (ipilimumab, tremelimumab) will NOT be excluded and are eligible for inclusion Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies) Has known active hepatitis B (e.g., hepatitis B surface antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis C virus [HCV] ribonucleic acid [RNA] [qualitative] is detected) Has received a live vaccine within 30 days prior to the first dose of trial treatment

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Treatment (pembrolizumab)<br>Patients receive pembrolizumab IV over 30 minutes on day 1. Treatment repeats every 3 weeks for 24 months in the absence of disease progression or unacceptable toxicity. | Biological: Pembrolizumab<br>* Given IV<br>* Other names: SCH 900475;Other: Laboratory Biomarker Analysis<br>* Correlative studies<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Objective Response Rate (ORR), Defined as the Percentage of Patients Achieving a Confirmed Complete or Partial Response, as Defined by Immune-related Response Criteria (irRC) | Of note, response rates by RECIST 1.1 criteria will also be assessed although irRC will be used for the primary endpoint. The percentage of complete or partial response is calculated and 95% confidence interval is estimated using Wilson method. | Up to 3 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progression-Free Survival (PFS) Defined as Time From Treatment to Progression Defined by RECIST1.1 Criteria or Death. | PFS will be summarized using the method of Kaplan and Meier. Median PFS time with 95% confidence intervals will be reported. Using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), progression will be defined as ≥ 20% increase in the sum of the longest diameter of target lesions compared with the smallest-sum longest diameter recorded or the appearance of one or more new lesions, and/or appearance of one or more new lesions and/or unequivocal progression of existing nontarget lesions. | Time from the first dose of pembrolizumab to progression, assessed up to 3 years. | 
| Overall Survival (OS) Defined as Number of Patients Surviving up to 3 Years. | The Kaplan-Meier method will be used to estimate the overall survival. Median survival and its 95% confidence interval will be estimated and reported. | Interval between the first dose of pembrolizumab and death for any reason, assessed up to 3 years | 
| Response Duration | If sample size permits, response duration will be summarized descriptively using Kaplan-Meier medians and quartiles. Only the subset of patients who show a complete response or partial response will be included in this analysis. | Up to 3 years | 
| Number of Patients With Each Worst-Grade Toxicity. Incidence of Adverse Events, Using the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0 | Count of patients according to the worst-grade toxicity experienced by each, where worst-grade toxicity is per NCI common toxicity criteria: grade 1, mild; grade 2, moderate; grade 3, severe; grade 4, life-threatening; grade 5, death. This endpoint will be reported descriptively without formal statistical analysis. | Up to 30 days after the last dose of trial treatment |