A Trial of mFOLFIRI With MEK162 in Patients With Advanced RAS (HRAS, NRAS, or KRAS) Positive Metastatic Colorectal Cancers

"MEK162 in combination with mFOLFIRI in a 14 day cycle~MEK162 will be given single agent 6 day lead in and then will be given in combination with mFOLFIRI~mFOLFIRI Administered Day 1 of each cycle Irinotecan 180mg/m2 iv over 90 minutes on day 1 5-fluoruracil 1200mg/m2 continuous infusion for 48 hours (2400mg/m2 in 48 hours)~Followed by MEK162 - Taken twice daily orally on Days 1-12 of each cycle~Level -1: mFOLFIRI at 80% + MEK162 30 mg twice daily 1 week on and 1 week off Level 1: mFOLFIRI + MEK162 30 mg twice daily Level 2: mFOLFIRI + MEK162 45 mg twice daily"