The PPQ is used to measure participants' preference for pazopanib or sunitinib for renal cell carcinoma management and is used to determine a participant's preference for 1 of the 2 drugs given in the 2 double-blind treatment periods. Participants were asked to select 1 of the following: 1. prefer the drug taken as the first treatment; 2. prefer the drug taken as the second treatment; or 3, no preference. Those participants who indicated a preference were asked to select the factors that had an influence on their treatment preference, as well as the most important reason for their preference.

The PPQ is used to measure participants' preference for pazopanib or sunitinib for renal cell carcinoma management and is used to determine a participant's preference for 1 of the 2 drugs given in the 2 double-blind treatment periods. Participants were asked to select 1 of the following: 1. prefer the drug taken as the first treatment; 2. prefer the drug taken as the second treatment; or 3, no preference. Those participants who indicated a preference were asked to select the factors that had an influence on their treatment preference, as well as the most important reason for their preference.

PFS was defined as the interval between the date of randomization and the earliest date of progressive disease (PD), as defined by the Independent Review Committee (IRC), or death due to any cause. The IRC defined PD per Response Evaluation Criteria in Solid Tumors (RECIST), Version 1. Per RECIST, PD is defined as a \>=20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum longest diameter recorded since the treatment started or the appearance of \>=1 new lesion.

MTR is defined as the highest dose of pazopanib in combination with the highest dose of MK 3475 at which no more than 1 of 6 subjects experiences a DLT after a minimum of 8 weeks of treatment. DLT is defined as a drug-related AE starting in the first 8 weeks of treatment

Laboratory assessments include haematology, clinical chemistry, urine, coagulation and thyroid function test

Vital sign measurements will include heart rate, temperature and blood pressure

Cardiac assessments will include Electrocardiogram (ECG) and Echocardiograms (ECHOs)

Subjects will be monitored for anti-MK 3475 antibodies throughout the study

PFS is defined as the interval between the date of randomization and the earlier date of disease progression (using RECIST v1.1) or death due to any cause.

To evaluate the safety assessments; adverse events, vital signs, physical examinations, electrocardiograms, multi-gated acquisition scans or echocardiograms (only for patients on pazopanib and lapatinib combination therapy), and clinical laboratory assessments.