Autoimmune disease: Patients with a history of inflammatory bowel disease, including ulcerative colitis and Crohn�s disease, are excluded from this study, as are patients with a history of symptomatic disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, autoimmune vasculitis [e.g., Wegener�s granulomatosis]) and motor neuropathy considered of autoimmune origin (e.g. Guillain-Barre syndrome and myasthenia gravis); patients with Hashimoto�s thyroiditis are eligible to go on studyXx_NEWLINE_xXPatients must not have autoimmune disorders or conditions of immunosuppression that require current ongoing treatment with systemic corticosteroids (or other systemic immunosuppressants), including oral steroids (i.e., prednisone, dexamethasone) or continuous use of topical steroid creams or ointments or ophthalmologic steroids; a history of occasional (but not continuous) use of steroid inhalers is allowed* Replacement doses of steroids for patients with adrenal insufficiency are allowed; patients who discontinue use of these classes of medication for at least 2 weeks prior to initiation of study treatment are eligible if, in the judgment of the treating physician investigator, the patient is not likely to require resumption of treatment with these classes of drugs during the study* Exclusion from this study also includes patients with a history of symptomatic autoimmune disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, Sjogren's syndrome, autoimmune vasculitis [e.g., Wegener�s Granulomatosis]); motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and Myasthenia Gravis); other CNS autoimmune disease (e.g., Multiple sclerosis); patients with autoimmune hypothyroid disease or type I diabetes on replacement treatment are eligibleXx_NEWLINE_xXRANDOMIZED PHASE II (ARMS K AND L): Patients must not have autoimmune disorders or conditions of immunosuppression that require current ongoing treatment with systemic corticosteroids (or other systemic immunosuppressants), including oral steroids (i.e., prednisone, dexamethasone) or continuous use of topical steroid creams or ointments or ophthalmologic steroids; a history of occasional (but not continuous) use of steroid inhalers is allowed; replacement doses of steroids for patients with adrenal insufficiency are allowed; patients who discontinue use of steroid medication for at least 2 weeks prior to initiation of therapy are eligible if, in the judgment of the treating physician investigator, the patient is not likely to require resumption of treatment with these classes of drugs during the study; exclusion from this study also includes patients with a history of symptomatic autoimmune disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, Sjogren's syndrome, autoimmune vasculitis [e.g., Wegener�s Granulomatosis]); motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and Myasthenia Gravis); other CNS autoimmune disease (e.g., Multiple sclerosis); patients with autoimmune hypothyroid disease or type I diabetes on replacement treatment are eligibleXx_NEWLINE_xXHistory of autoimmune disease, with the exception of an autoimmune event associated with prior ipilimumab (anti-cytotoxic T-lymphocyte antigen 4 [CTLA-4]) therapy that has been completely resolved for more than 4 weeksXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sj�gren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligible* Patients are permitted to enroll if they have vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger (precipitating event)Xx_NEWLINE_xXAutoimmune disease: patients with a history of inflammatory bowel disease, including ulcerative colitis and Crohn�s disease, are excluded from this study, as are patients with a history of symptomatic disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, autoimmune vasculitis [e.g., Wegener�s granulomatosis]); central nervous system (CNS) or motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and myasthenia gravis, multiple sclerosis); patients with thyroid disease will be allowed; autoimmune diagnoses not listed here must be approved by the protocol chair, following discussion with the study sponsor and Cancer Therapy Evaluation Program (CTEP)Xx_NEWLINE_xXPatients should have no evidence of being immunocompromised as listed below:* Human immunodeficiency virus positivity* Active autoimmune diseases requiring treatment or a history of autoimmune disease that might be stimulated by vaccine treatment; patients with endocrine disease that is controlled by replacement therapy including thyroid disease and adrenal disease and vitiligo may be enrolled* History of splenectomyXx_NEWLINE_xXPatients must not have any known autoimmune diseaseXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), should be evaluated for the presence of target organ involvement and potential need for systemic treatment; if no systemic immune suppression is deemed necessary they can be eligibleXx_NEWLINE_xXHas 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; patients with vitiligo or resolved childhood asthma/atopy would be an exception to this rule; patients that require intermittent use of bronchodilators or local steroid injections would not be excluded from the study; patients with hypothyroidism stable on hormone replacement or Sjogren�s syndrome will not be excluded from the studyXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sj�gren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, are excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease, Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patient with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXExclusion from this study also includes patients with a history of symptomatic autoimmune disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, Sjogren's syndrome, autoimmune vasculitis [e.g., Wegener�s granulomatosis]); motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and myasthenia gravis); other CNS autoimmune disease (e.g., multiple sclerosis)Xx_NEWLINE_xXPatients with autoimmune hypothyroid disease or type I diabetes on replacement treatment are eligibleXx_NEWLINE_xXPatients with a history of or who currently have evidence of autoimmune disease (other than autoimmune thyroid disease managed with thyroid hormone replacement or vitiligo) including: myasthenia gravis, Guillain Barre syndrome, systemic lupus erythematosus, multiple sclerosis, scleroderma, ulcerative colitis, Crohn�s disease, autoimmune hepatitis, Wegener�s etc., are ineligibleXx_NEWLINE_xXParticipants with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and participants with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; participants with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; participants with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and participants with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligible; participants are permitted to enroll if they have vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger (precipitating event)Xx_NEWLINE_xXHistory of autoimmune disorder, including type 1 diabetes mellitus, pemphigus vulgaris, systemic mastocytosis, systemic lupus erythromatosis, dermatomyositis/polymyositis, rheumatoid arthritis, systemic sclerosis, Sj�rgen�s syndrome, vasculitis/arteritis, Behcet�s syndrome, autoimmune thyroiditis, multiple sclerosis, or uveitis; (vitiligo is allowed)Xx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis, systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, autoimmune hepatitis, and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXPatients with active, known, or suspected autoimmune disease* Participants with well-controlled asthma and/or mild allergic rhinitis (seasonal allergies) are eligible* Participants with the following disease conditions are also eligible: ** Vitiligo,** Type 1 diabetes mellitus** Residual hypothyroidism due to autoimmune condition only requiring hormone replacement** Euthyroid participants with a history of Grave�s disease (participants suspected autoimmune thyroid disorders must be negative for thyroglobulin and thyroid peroxidase antibodies and thyroid stimulating immunoglobulin prior to first dose of study drug)** For patients with ITP (idiopathic thrombocytopenic purpura) or AIHA (autoimmune hemolytic anemia), a case by case discussion with study principal investigator (PI) may be consideredXx_NEWLINE_xXPatients with autoimmune disease requiring systemic corticosteroid treatment (and previously ineligible to receive systemic immunotherapies for melanoma) are allowed on condition that they do not receive more than 20 mg of daily dose methylprednisolone, prednisone, or its equivalent; this does not include autoimmune diseases caused by previous immunotherapy treatments for melanoma that require ongoing treatment with corticosteroids (e.g. autoimmune colitis or autoimmune hepatitis receiving corticosteroids)Xx_NEWLINE_xXCurrent or history of systemic autoimmune disease requiring systemic therapy* Note: the following will NOT be exclusionary:** The presence of laboratory evidence of autoimmune disease (e.g., positive antinuclear antibody [ANA] titer or lupus anticoagulant) without associated symptoms** Clinical evidence of vitiligo or other forms of depigmenting illness** Mild autoimmunity not impacting the function of major organs (e.g., limited psoriasis)Xx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with rheumatoid arthritis and other arthropathies, Sjogren�s syndrome, psoriasis controlled with topical medication, and patients with positive serology, such as antinuclear antibodies (ANA) or anti-thyroid antibodies, should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligibleXx_NEWLINE_xXPatients with active autoimmune disease or history of autoimmune disease that might recur, which may affect vital organ function or require immune suppressive treatment including systemic corticosteroids, should be excluded; these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excluded; patients with vitiligo, endocrine deficiencies including thyroiditis managed with replacement hormones including physiologic corticosteroids are eligible; patients with rheumatoid arthritis and other arthropathies (other than HTLV-associated arthropathy), and psoriasis controlled with topical medication and patients with positive serology, such as antinuclear antibodies (ANA), anti-thyroid antibodies should be evaluated for the presence of target organ involvement and potential need for systemic treatment but should otherwise be eligible; patients are permitted to enroll if they have vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger (precipitating event)Xx_NEWLINE_xXActive autoimmune disease that has required systemic treatment within the past 2 years (i.e., with use of modifying agents, corticosteroids, or immunosuppressive drugs); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatmentXx_NEWLINE_xXHistory of, or current autoimmune diseaseXx_NEWLINE_xXPatients must not have active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatmentXx_NEWLINE_xXPatients who received prior pembrolizumab, patients on chronic steroids or who have active autoimmune disease for which they received systemic treatment in the previous 2 years with corticosteroids, disease modifying agents, or immunosuppressive drugs; replacement therapy (thyroxine, insulin or physiological corticosteroid replacement for adrenal or pituitary insufficiency) is allowed; patients with active interstitial lung disease or who have a history of pneumonitis for which they had received glucocorticoids are not eligible.Xx_NEWLINE_xXHistory or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible� Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXPatients must not have active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, immunosuppressive drugs, or corticosteroids with doses higher than prednisone 10mg or equivalent); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment; autoimmune diseases include but are not limited to autoimmune hepatitis, inflammatory bowel disease (including ulcerative colitis and Chron�s disease), as well as symptomatic disease (e.g. rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, autoimmune vasculitis [e.g., Wegener�s Granulomatosis]); CNS or motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and myasthenia gravis, multiple sclerosis or glomerulonephritis); vitiligo, alopecia, hypothyroidism on stable doses of thyroid replacement therapy, psoriasis not requiring systemic therapy within the past 2 years is permitted; short-term steroid premedication for contrast allergy is permittedXx_NEWLINE_xXHistory or risk of autoimmune disease, including but not limited to systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone are eligible* Patients with controlled type 1 diabetes mellitus on a stable insulin regimen, or type 2 diabetes mellitus are eligible* Patients with eczema, psoriasis, lichen simplex chronicus or vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXPatients must not have active autoimmune disease that has required systemic treatment in past two years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment; autoimmune diseases include, but are not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritisXx_NEWLINE_xXHistory or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, lichen sclerosis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled Type 1 diabetes mellitus on a stable insulin regimen may be eligible* Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXHistory or risk of autoimmune disease that threatens vital organ function, including, but not limited to, systemic lupus erythematosus, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Guillain-Barre syndrome, multiple sclerosis, or glomerulonephritis* Patients with a prior history of immune related events to anti-CTLA-4 may be eligible after discussion with the sponsor; however, patients with a history of grade 3 and 4 pulmonary, CNS and renal events attributed to anti-CTLA-4 agents will be excluded* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible* Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXSubjects with active autoimmune disease, a history of known or suspected autoimmune disease or a history of a syndrome requiring systemic corticosteroids (> 10 mg daily of prednisone equivalent) except for the treatment of malignancy with the exception of:* Isolated vitiligo* Resolved childhood atopy* History of a positive antinuclear antibody (ANA) titer without associated symptoms or history of symptoms of an autoimmune disorder* Controlled thyroid disorders* Type I diabetes mellitus* Psoriasis, Sjogren�s syndrome, and arthropathies not requiring systemic treatment* Autoimmune diseases: these include but are not limited to patients with a history of immune related neurologic disease, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barre syndrome, myasthenia gravis; systemic autoimmune disease such as systemic lupus erythematosus (SLE), connective tissue diseases, scleroderma, autoimmune vasculitis, inflammatory bowel disease (IBD), Crohn�s, ulcerative colitis, hepatitis; and patients with a history of toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome, or phospholipid syndrome should be excludedXx_NEWLINE_xXHistory or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible* Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, flucinolone 0.01%, desonide 0.05%, aclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXActive or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease, diverticulitis [with the exception of diverticulosis]; sarcoidosis syndrome, or other serious gastrointestinal [GI] chronic conditions associated with diarrhea; systemic lupus erythematosus; Wegener syndrome [granulomatosis with polyangiitis]; myasthenia gravis; Graves disease; rheumatoid arthritis; hypophysitis; uveitis, sarcoidosis syndrome, etc.) within the past 3 years prior to the start of treatment; the following are exceptions to this criterion: * Patients with vitiligo or alopecia* Patients with hypothyroidism (e.g., following Hashimoto syndrome) stable on hormone replacement or psoriasis not requiring systemic treatment* 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 controlled by diet aloneXx_NEWLINE_xXAutoimmune disease: patients with a history of inflammatory bowel disease, including ulcerative colitis and Crohn�s disease, are excluded from this study, as are patients with a history of symptomatic disease (e.g., rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, autoimmune vasculitis [e.g., Wegener�s granulomatosis]); CNS or motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and myasthenia gravis, multiple sclerosis); patients with a history of autoimmune disease (specifically including: diabetes mellitus, vitiligo, Hashimoto�s thyroiditis) who are asymptomatic, do not require immune suppression or steroids, and do not have threatened vital organ function from these conditions may be considered after discussion with the principal investigator (PI)Xx_NEWLINE_xXNo active known autoimmune disease, including colitis, inflammatory bowel disease (i.e. ulcerative colitis or Crohn�s disease), rheumatoid arthritis, panhypopituitarism, adrenal insufficiencyXx_NEWLINE_xXHistory or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible* Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xXHistory or evidence of active autoimmune disease (e.g., pneumonitis, glomerulonephritis, vasculitis, or other); or history of active autoimmune disease that has required systemic treatment (i.e., use of corticosteroids, immunosuppressive drugs or biological agents used for treatment of autoimmune diseases) within 2 months of enrollment; (replacement therapy [e.g., thyroxine for hypothyroidism, insulin for diabetes or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency] is not considered a form of systemic treatment for autoimmune disease)* Evidence of clinically significant immunosuppression such as** Primary immunodeficiency state such as severe combined immunodeficiency disease** Concurrent opportunistic infection** Receiving systemic immunosuppressive therapy (> 2 weeks) including oral steroid doses > 10 mg/day of prednisone or equivalent within 2 months prior to enrollmentXx_NEWLINE_xXAny history of active or severe autoimmune disease: inflammatory bowel disease, including ulcerative colitis and Crohn�s disease, rheumatoid arthritis, systemic progressive scleroderma, systemic lupus erythematosus, autoimmune vasculitis (e.g., Wegener�s granulomatosis), CNS or motor neuropathy considered of autoimmune origin (e.g. Guillain-Barre syndrome, myasthenia gravis, multiple sclerosis); patients with hypothyroidism with stable hormone replacement therapy dosing are allowed on studyXx_NEWLINE_xXPatients must not have active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatmentXx_NEWLINE_xXPatients must not have any prior documented autoimmune or inflammatory disease (including inflammatory bowel disease, diverticulitis with the exception of diverticulosis, celiac disease, irritable bowel disease; Wegner syndrome; Hashimoto syndrome) within 3 years prior to sub-study registration; patients with vitiligo, immune-mediated alopecia, Grave�s disease, or psoriasis requiring systemic treatment within the past 2 years are not eligible; patients with hypothyroidism (e.g. post Hashimoto syndrome) who are stable on hormone replacement therapy are eligibleXx_NEWLINE_xXPatients must not require use of systemic corticosteroid within 14 days prior to registration or during protocol treatment; patients with preexisting severe autoimmune disease requiring systemic corticosteroids or ongoing immunosuppression are not eligibleXx_NEWLINE_xXPatients must not have history or evidence of active autoimmune disease (e.g., pneumonitis, glomerulonephritis, vasculitis, or other); or history of active autoimmune disease that has required systemic treatment (i.e., use of corticosteroids, immunosuppressive drugs or biological agents used for treatment of autoimmune diseases) within 2 months of registration; replacement therapy (e.g., thyroxine for hypothyroidism, insulin for diabetes or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment for autoimmune diseaseXx_NEWLINE_xXHistory or evidence of active autoimmune disease (e.g., pneumonitis, glomerulonephritis, vasculitis, or other); or history of active autoimmune disease that has required systemic treatment (i.e., use of corticosteroids, immunosuppressive drugs or biological agents used for treatment of autoimmune diseases) within 2 months of enrollment; (replacement therapy [e.g., thyroxine for hypothyroidism, insulin for diabetes or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency] is not considered a form of systemic treatment for autoimmune disease)Xx_NEWLINE_xXPatients with a history or evidence of active autoimmune disease (e.g., pneumonitis, glomerulonephritis, vasculitis, or other); or history of active autoimmune disease that has required systemic treatment (i.e., use of corticosteroids, immunosuppressive drugs or biological agents used for treatment of autoimmune diseases) within 2 months of enrollment are ineligible; (replacement therapy [e.g., thyroxine for hypothyroidism, insulin for diabetes or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency] is not considered a form of systemic treatment for autoimmune disease)Xx_NEWLINE_xXHistory or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener�s granulomatosis, Sjogren�s syndrome, Bell�s palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis* Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible* Patients with controlled Type 1 diabetes mellitus on a stable insulin regimen may be eligible* Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions:** Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations** Rash must cover less than 10% of body surface area (BSA)** Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, flucinolone 0.01%, desonide 0.05%, aclometasone dipropionate 0.05%)** No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)Xx_NEWLINE_xX