- Patients must not have unequivocal disease progression (by RECIST v1.1) during the first cycle; patients must have disease assessed using the same method as baseline within +/- 5 days of the day 56 scheduled assessment (between days 51-55 of cycle 1, or days 1-5 of cycle 2); all disease must be assessed and documented on the follow-up tumor assessment form (RECIST 1.1)