Safety and Efficacy Study of Pembrolizumab (MK-3475) as Monotherapy in the Adjuvant Treatment of Renal Cell Carcinoma Post Nephrectomy (MK-3475-564/KEYNOTE-564)

Participants will be assigned to receive study treatment until disease recurrence, unacceptable adverse events (AEs), intercurrent illness that prevents further administration of treatment, Investigator's decision to withdraw the participant, noncompliance with study treatment or procedural requirements, administrative reasons requiring cessation of treatment, or until the participant has received 17 cycles of study treatment (approximately 1 year). Each cycle is 3 weeks long. With Protocol Amendment 02 (dated 04 Sep 2019), the secondary study objectives for the evaluation of pharmacokinetic (PK) parameters and the presence of pembrolizumab antidrug antibodies (ADA) were reclassified as tertiary study objectives.