Identification and Treatment Of Micrometastatic Disease in Stage III Colon Cancer

FOLFIRI cycle will be two weeks (14 days) long, with FOLFIRI administered on Days 1-3. Participants will receive up to 12 two-week cycles (for a total of 24 weeks) of FOLFIRI chemotherapy.

Will be followed with observation and monitoring with imaging, tumor markers, and ctDNA collections

Nivolumab cycle will be four weeks (28 days) long, with Nivolumab administered on day 1. Participants will receive up to 12 four-week cycles (for a total of 48 weeks) of Nivolumab treatment.

Encorafenib/Binimetinib will be taken orally every day and Cetuximab will be administered intravenously on day 1 of each cycle. Cycles are 14 days long. Participants will receive up to 12 two-week cycles (for a total of 24 weeks) of Encorafenib/Binimetinib/Cetuximab.

Trastuzumab (Herceptin) is received by intravenous administration and Pertuzumab is received intravenously by infusion on Day 1 of each cycle. Cycles are 21 days long. Participants will receive up to 8 cycles of Trastuzumab and Pertuzumab.