Inclusion Criteria:

- Histologically confirmed diagnosis of mRCC (regardless of histology or nephrectomy
status) with well-documented Radiological PD by RECIST criteria or clinical PD as
judged by the investigator while receiving first-line sunitinib therapy. Subjects
must have at least 1 cycle of sunitinib therapy (minimum of four weeks continuously).

- At time of randomization, at least 2 weeks since prior treatment with sunitinib,
palliative radiation therapy, and/or surgery.

- At time of randomization, there must be at least 1 measurable lesion per RECIST.
Lesions that have been previously irradiated or embolized cannot be selected as
target lesions.

- More criteria apply

Exclusion Criteria:

- Metastatic CNS from RCC.

- Subjects who discontinued Sutent therapy due specifically to intolerance.

- Prior systemic therapy for mRCC other than sunitinib.

- Active ketonuria, secondary to poorly controlled diabetes mellitus

- More criteria apply