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Those without a treatment response after 5 weeks undergo surgery within 7 days.\n\nNivolumab: Given IV\n\nIDO1 Inhibitor BMS-986205: Given PO\n\nTherapeutic Conventional Surgery: Undergo Surgery\n\nQuestionnaire Administration: Ancillary studies","id":"BG000","title":"Arm A: BMS986205 + Nivolumab"},{"description":"Patients receive nivolumab IV over 30 minutes on day 1 in the absence of disease progression or unacceptable toxicity. Patients showing treatment response after 4 weeks receive nivolumab IV over 30 minutes on day 1, then undergo surgery at week 9. Those without a treatment response after 4 weeks undergo surgery within 7 days.\n\nNivolumab: Given IV\n\nTherapeutic Conventional Surgery: Undergo Surgery\n\nQuestionnaire Administration: Ancillary studies","id":"BG001","title":"Arm B: Group I - Nivolumab Only"},{"description":"Data from Contemporaneous Study 10237 (NCT03238365) participants who received Nivolumab alone prior to surgery is used as a historical controls under the current window of treatment (WOT), to bolster the control group.","id":"BG002","title":"Arm C: Group II - Nivolumab Only"},{"description":"Total of all reporting groups","id":"BG003","title":"Total"}],"measures":[{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"0"}],"title":"<=18 years"},{"measurements":[{"groupId":"BG000","value":"19"},{"groupId":"BG001","value":"6"},{"groupId":"BG002","value":"12"},{"groupId":"BG003","value":"37"}],"title":"Between 18 and 65 years"},{"measurements":[{"groupId":"BG000","value":"12"},{"groupId":"BG001","value":"5"},{"groupId":"BG002","value":"7"},{"groupId":"BG003","value":"24"}],"title":">=65 years"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Age, Categorical","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"8"},{"groupId":"BG001","value":"3"},{"groupId":"BG002","value":"1"},{"groupId":"BG003","value":"12"}],"title":"Female"},{"measurements":[{"groupId":"BG000","value":"23"},{"groupId":"BG001","value":"8"},{"groupId":"BG002","value":"18"},{"groupId":"BG003","value":"49"}],"title":"Male"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Sex: Female, Male","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"1"},{"groupId":"BG003","value":"2"}],"title":"Hispanic or Latino"},{"measurements":[{"groupId":"BG000","value":"29"},{"groupId":"BG001","value":"11"},{"groupId":"BG002","value":"18"},{"groupId":"BG003","value":"58"}],"title":"Not Hispanic or Latino"},{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"1"}],"title":"Unknown or Not Reported"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Ethnicity (NIH/OMB)","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"0"}],"title":"American Indian or Alaska Native"},{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"0"}],"title":"Asian"},{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"0"}],"title":"Native Hawaiian or Other Pacific Islander"},{"measurements":[{"groupId":"BG000","value":"2"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"2"},{"groupId":"BG003","value":"4"}],"title":"Black or African American"},{"measurements":[{"groupId":"BG000","value":"28"},{"groupId":"BG001","value":"11"},{"groupId":"BG002","value":"16"},{"groupId":"BG003","value":"55"}],"title":"White"},{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"0"},{"groupId":"BG003","value":"0"}],"title":"More than one race"},{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"1"},{"groupId":"BG003","value":"2"}],"title":"Unknown or Not Reported"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Race (NIH/OMB)","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"31"},{"groupId":"BG001","value":"11"},{"groupId":"BG002","value":"19"},{"groupId":"BG003","value":"61"}]}],"title":"United States"}],"paramType":"NUMBER","title":"Region of Enrollment","unitOfMeasure":"participants"}]}