{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"47"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"57"}],"units":"Participants"}],"description":"Response was determined using a composite end point of overall end-of-treatment (EOT) complete response (CR) at day 150 (approximately 12 weeks after completion of chemoradiotherapy) by CT of the neck (RECIST 1.1).\n\nOptional positron emission tomography (PET) imaging was allowed rather than neck dissection if CT could not confirm CR. Complete metabolic response was assessed using Hopkins score of 1, 2, or 3 on PET imaging. For those without an imaging CR, pathologic confirmation was recommend (but not required) by selective neck dissection and/or directed biopsy of the suspected active disease site. If pathologic evaluation of the potential disease site confirmed no residual invasive or in situ cancer, the patient was determined to have a pathologic CR. In cases with both an imaging CR and pathologic response assessment, the pathologic response defined final overall response. Therefore, patients with a final EOT CR included those with either an imaging (CT or PET) or pathologic CR.","groups":[{"description":"Pembrolizumab + Cisplatin + Radiation\n\npembrolizumab (MK-3475): 200mg IV on days -7(loading dose), 15, 36, 57, 78, 99, 120, 141.\n\nCisplatin: Cisplatin 40 mg/m2 IV on days 1, 8, 15, 22, 29, 36\n\nRadiation: 70 Gy fractionated over 35 days","id":"OG000","title":"Single Arm"}],"paramType":"COUNT_OF_PARTICIPANTS","reportingStatus":"POSTED","timeFrame":"Day 150 (post treatment imaging)","title":"Evaluation of the Efficacy of Pembrolizumab Given in Combination With Definitive CRT by Determining the Number of Participants With Complete Response at Treatment End (Day 150)","type":"SECONDARY","unitOfMeasure":"Participants"}