Conditions: Recurrent Colon Carcinoma Recurrent Rectal Carcinoma Stage IVA Colon Cancer Stage IVA Rectal Cancer Stage IVB Colon Cancer Stage IVB Rectal Cancer
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 27
Healthy volunteers: no

Brief summary:
This phase II trial studies how well capecitabine and celecoxib with or without radiation therapy works in treating patients with colorectal cancer that is newly diagnosed or has been previously treated with fluorouracil, and has spread to other parts of the body (metastatic). Drugs used in chemotherapy, such as capecitabine, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Celecoxib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Radiation therapy uses high-energy x-rays to kill tumor cells. Giving capecitabine and celecoxib together with radiation therapy may kill more tumor cells.

Detailed description:
PRIMARY OBJECTIVES:

I. To determine the rate of complete response 2 years following the initiation of first line 5-FU (fluorouracil) based chemotherapy in patients with initially unresected metastatic colorectal cancer who are then treated on the activating cancer stem cells (CSCs) from dormancy and priming them for subsequent targeting (ADAPT) protocol.

SECONDARY OBJECTIVES:

I. To determine overall survival, relapse free survival (if complete response \[CR\]) based on intent to treat (ITT) analysis.

II. To determine quality of life while on ADAPT therapy.

III. To determine the effects of v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (K-ras) mutation status, resection and radiation on response to ADAPT therapy.

OUTLINE:

Patients proceed to surgery, radiation therapy with ADAPT therapy followed by maintenance ADAPT therapy, or ADAPT therapy. Eligible patients undergo surgical resection at baseline or upon achievement of resectable disease after radiation therapy.

RADIATION + ADAPT: Patients undergo radiation therapy 5 days per week and receive capecitabine orally (PO) twice daily (BID) and celecoxib PO BID 5 days per week during radiation.

ADAPT: Patients receive capecitabine PO BID on days 1-14 and celecoxib PO BID on days 1-21. Courses repeat every 21 days for up to 3 years in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for 1 year, every 4 months for 2 years, and then every 6 months for 2 years.

Arms:
arm 1: Patients proceed to surgery, radiation therapy with ADAPT therapy followed by maintenance ADAPT therapy, or ADAPT therapy. Eligible patients undergo surgical resection at baseline or upon achievement of resectable disease after radiation therapy.

RADIATION + ADAPT: Patients undergo radiation therapy 5 days per week and receive capecitabine PO BID and celecoxib PO BID 5 days per week during radiation.

ADAPT: Patients receive capecitabine PO BID on days 1-14 and celecoxib PO BID on days 1-21. Courses repeat every 21 days for up to 3 years in the absence of disease progression or unacceptable toxicity.

Interventions: intervention 1: Capecitabine intervention 2: Celecoxib intervention 3: Intensity-Modulated Radiation Therapy intervention 4: Laboratory Biomarker Analysis intervention 5: Quality-of-Life Assessment intervention 6: Radiation Therapy intervention 7: Stereotactic Radiosurgery intervention 8: Therapeutic Conventional Surgery
Intervention descriptions: intervention 1: Given PO intervention 2: Given PO intervention 3: Undergo IMRT intervention 4: Correlative studies intervention 5: Ancillary studies intervention 6: Undergo radiation therapy intervention 7: Undergo stereotactic radiosurgery intervention 8: Undergo surgical resection

Protocol document: