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This phase IV trial evaluates how well giving standard of care (SOC) peptide receptor radionuclide therapy (PRRT) after SOC surgical removal of as much tumor as possible (debulking surgery) works in treating patients with grade 1 or 2, somatostatin receptor (SSTR) positive, gastroenteropancreatic neuroendocrine tumors (GEP-NETs) that have spread from where they first started (primary site) to the liver (hepatic metastasis). Lutetium Lu 177 dotatate is a radioactive drug that uses targeted radiation to kill tumor cells. Lutetium Lu 177 dotatate includes a radioactive form (an isotope) of the element called lutetium. This radioactive isotope (Lu-177) is attached to a molecule called dotatate. On the surface of GEP-NET tumor cells, a receptor called a somatostatin receptor binds to dotatate. When this binding occurs, the lutetium Lu 177 dotatate drug then enters somatostatin receptor-positive tumor cells, and radiation emitted by Lu-177 helps kill the cells. Giving lutetium Lu 177 dotatate after surgical debulking may better treat patients with grade 1/2 GEP-NETs.

This open-label, exploratory study is designed to evaluate the safety and efficacy of
targeted therapies or immunotherapy as single agents or combinations, in participants with
metastatic colorectal cancer (mCRC) whose tumors are biomarker positive as per treatment
arm-specific definition. Eligible participants with mCRC will be enrolled into specific
treatment arms based on their biomarker assay results.

This is a multicenter, randomized, open-label, controlled Phase 3 trial of XL092 +
atezolizumab vs regorafenib in subjects with microsatellite stable/microsatellite instability
low (MSS/MSI-low) metastatic colorectal cancer (mCRC) who have progressed during, after or
are intolerant to standard-of-care (SOC) therapy.

The purpose of this study is to evaluate two study medicines (encorafenib plus cetuximab)
taken alone or together with standard chemotherapy for the potential treatment of colorectal
cancer that:

- has spread to other parts of the body (metastatic);

- has a certain type of abnormal gene called "BRAF"; and

- has not received prior treatment.

Participants in this study will receive one of the following study treatments:

- Encorafenib plus cetuximab: These participants will receive encorafenib by mouth at home
every day and cetuximab once every two weeks by intravenous (IV) infusion (an injection
into the vein) at the study clinic.

- Encorafenib plus cetuximab with chemotherapy: These participants will receive
encorafenib and cetuximab in the way described in the bullet above. Additionally, they
will receive standard chemotherapy by IV infusion and oral treatment at home.

- Chemotherapy alone: These participants will receive chemotherapy, the standard treatment
for this condition, by IV infusion at the study clinics and oral treatment at home.

The study team will monitor how each participant responds to the study treatment for up to
about 3 years.

This phase II trial tests whether adding nivolumab to the usual treatment (encorafenib and cetuximab) works better than the usual treatment alone to shrink tumors in patients with colorectal cancer that has spread to other places in the body (metastatic) or that cannot be removed by surgery (unresectable) and whose tumor has a mutation in a gene called BRAF. Encorafenib is in a class of medications called kinase inhibitors. It is used in patients whose cancer has a certain mutation (change) in the BRAF gene. It works by blocking the action of mutated BRAF that signals cancer cells to multiply. This helps to stop or slow the spread of cancer cells. Cetuximab is in a class of medications called monoclonal antibodies. It binds to a protein called EGFR, which is found on some types of cancer cells. This may help keep cancer cells from growing. Immunotherapy with monoclonal antibodies, such as nivolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving nivolumab in combination with encorafenib and cetuximab may be more effective than encorafenib and cetuximab alone at stopping tumor growth and spreading in patients with metastatic or unresectable BRAF-mutant colorectal cancer.