Safety and Tolerability Study of GSK1120212, a MEK Inhibitor, in Combination With Docetaxel, Erlotinib, Pemetrexed, Pemetrexed + Carboplatin, Pemetrexed + Cisplatin, or Nab-Paclitaxel

Inclusion Criteria:

* The subject has a solid tumor. Expansion cohorts are limited to non-small cell lung cancer and/or pancreatic cancer with or without a KRAS mutation.
* Tumor progression following at least one prior standard therapy, the subject refuses standard therapy, or no standard therapy exists.
* The subject has a radiographically measurable tumor.
* The subject is able to carry out daily life activities without difficulty.
* The subject is able to swallow and retain oral medication.
* The subject does not have significant side effects from previous anti-cancer treatment.
* The subject has adequate organ and blood cell counts.
* Sexually active subjects must use medically acceptable methods of contraception during the course of the study.

Exclusion Criteria:

* The subject has had major surgery or received certain types of cancer therapy within 2-3 weeks before starting the study.
* The subject has a brain tumor.
* Current severe, uncontrolled systemic disease.
* History of clinically significant heart, lung, or eye/vision problems.
* The subject has high blood pressure that is not well-controlled with medication.
* The subject has a permanent pacemaker.
* The subject is pregnant or breastfeeding.
* Positive for Hepatitis B, Hepatitis C, or HIV.