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Diagnosis of UC at least 3 months prior to screening |
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Mildly to severely active UC |
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Inadequate response, loss of response, or intolerance to at least 1 prior conventional therapy, and no more than 2 prior advanced therapies |
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Participants at risk for colorectal cancer must have a colonoscopy prior to or at screening as follows |
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Participants > 50 years of age must have documentation of a colonoscopy within 3 years of the screening visit to exclude adenomatous polyps. Participants whose adenomas have been completely excised at screening are eligible |
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Participants with extensive colitis for ≥ 8 years, or disease limited to the left side of the colon for ≥ 10 years, must either have had a full colonoscopy to assess for the presence of dysplasia within 1 year before first administration of study drug or a full colonoscopy to assess for the presence of malignancy at the screening visit |
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No evidence of active tuberculosis (TB), latent TB, or inadequately treated TB |
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Women of childbearing potential (WOCBP) and males with female partners of childbearing potential must utilize highly effective contraceptive methods beginning 4 weeks prior to first dose of study drug and continue for 30 days after the last dose of study drug |
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Body mass index (BMI) 18 to 35 kg/m^2 inclusive and weight ≥ 50 kg |
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Prior treatment with recombinant IL-2 or modified IL-2 therapy, including MK-6194 (PT101)
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Known sensitivity to MK-6194 (PT101) or its excipients
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Known history of hypersensitivity to interleukin-2 (IL-2)
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Disease limited to the rectum (i.e., within 15 cm of the anal verge)
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Diagnosis of toxic megacolon
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Suspected or known colon stricture or stenosis
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Diagnosis of Crohn's disease, or indeterminant colitis
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Has severe colitis as evidenced by
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Current hospitalization for the treatment of UC
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Likely to require a colectomy within 12 weeks of baseline in the opinion of the Investigator
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At least 4 symptoms of severe colitis as identified at screening or baseline visits
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Previously had surgery for UC, or likely to require surgery for UC during the study
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History of abnormal thallium stress test or functional cardiac function test
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period in the opinion of the Investigator
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History of significant cardiac, pulmonary, renal, hepatic, or central nervous system (CNS) impairment
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Active clinically significant infection, or any infection requiring hospitalization or treatment with intravenous anti-infectives within 8 weeks of randomization, or any infection requiring oral anti-infective therapy within 6 weeks of randomization
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History of opportunistic infection
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History of symptomatic herpes zoster within 16 weeks of randomization, or any history of disseminated herpes simplex, disseminated herpes zoster, ophthalmic zoster, or central nervous system (CNS) zoster
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Currently on any chronic systemic (oral or IV) anti-infective therapy for chronic infection (such as pneumocystis, cytomegalovirus, herpes zoster, or atypical mycobacteria)
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Currently receiving lymphocyte depleting therapy
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History of abnormal pulmonary function tests
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Participants with organ or tissue allograft
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Malignancy within 5 years of screening, with the exception of adequately treated or excised non-metastatic basal cell or squamous cell cancer of the skin
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Exposure to advanced therapy within 5 half-lives of the Day 1 visit, or documentation of detectable drug during screening
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Received a live attenuated vaccine < 1 month prior to screening or is planning to receive a live attenuated vaccine during the study period or within 12 weeks of the end of participation in the study
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Is pregnant or nursing or is planning to become pregnant during the study
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Any uncontrolled or clinically significant concurrent systemic disease other than UC
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