{"denoms":[{"counts":[{"groupId":"BG000","value":"50"}],"units":"Participants"}],"groups":[{"description":"Patients receive pembrolizumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 24 months in the absence of disease progression\\* or unacceptable toxicity.\n\n\\* NOTE: Patients with confirmed disease progression may continue to receive treatment if they are otherwise clinically stable until there is an increase in tumor burden of 25% or more following initial confirmation of progression. Under exceptional circumstances, and with protocol P.I. and CITN P.I. approval, patients may receive treatment beyond 2 years.\n\nLaboratory Biomarker Analysis: Ancillary studies\n\nPembrolizumab: Given IV","id":"BG000","title":"Treatment (Pembrolizumab)"}],"measures":[{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"}],"title":"<=18 years"},{"measurements":[{"groupId":"BG000","value":"40"}],"title":"Between 18 and 65 years"},{"measurements":[{"groupId":"BG000","value":"10"}],"title":">=65 years"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Age, Categorical","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"16"}],"title":"Female"},{"measurements":[{"groupId":"BG000","value":"34"}],"title":"Male"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Sex: Female, Male","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"}],"title":"American Indian or Alaska Native"},{"measurements":[{"groupId":"BG000","value":"1"}],"title":"Asian"},{"measurements":[{"groupId":"BG000","value":"0"}],"title":"Native Hawaiian or Other Pacific Islander"},{"measurements":[{"groupId":"BG000","value":"0"}],"title":"Black or African American"},{"measurements":[{"groupId":"BG000","value":"45"}],"title":"White"},{"measurements":[{"groupId":"BG000","value":"0"}],"title":"More than one race"},{"measurements":[{"groupId":"BG000","value":"4"}],"title":"Unknown or Not Reported"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Race (NIH/OMB)","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"50"}]}],"title":"United States"}],"paramType":"NUMBER","title":"Region of Enrollment","unitOfMeasure":"participants"}]}