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Clinical Trial Summary

This phase II trial studies how well retreatment with panitumumab works compared to standard of care regorafenib or trifluridine and tipiracil hydrochloride (TAS-102) in treating patients with colorectal cancer that is negative for RAS wild-type colorectal cancer has spread to other places in the body (metastatic), and/or cannot be removed by surgery (unresectable), and is negative for resistance mutations in blood. Treatment with panitumumab may interfere with the ability of tumor cells to grow and spread. Some tumors need growth factors to keep growing. Growth factor antagonists, such as regorafenib, may interfere with the growth factor and stop the tumor from growing. Drugs used in chemotherapy, such as TAS-102, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving panitumumab may work better in treating patients with colorectal cancer than with the usual treatment of regorafenib or TAS-102.


Clinical Trial Description

PRIMARY OBJECTIVE: I. To compare the overall survival (OS) in molecularly selected patients with metastatic colorectal cancer (CRC) receiving panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib). SECONDARY OBJECTIVES: I. To compare the progression free survival (PFS) in molecularly selected patients with metastatic CRC receiving panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib). II. To define the objective response rate (ORR) in patients receiving panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib). III. To define the clinical benefit rate (CBR = complete response + partial response + stable disease >= 4 months) in patients receiving panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib). IV. To compare the safety and tolerability of panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib). V. To compare quality of life (QOL) between panitumumab rechallenge versus standard therapy (TAS-102 or regorafenib) as measured by the linear analogue self-assessment (LASA) questionnaires. CORRELATIVE RESEARCH OBJECTIVES: I. To assess plasma pharmacodynamics biomarkers of response and resistance to therapy. II. To explore any correlation between tissue and blood based biomarkers and clinical outcomes. OUTLINE: Patients are randomized to 1 of 2 arms. ARM A: Patients receive panitumumab intravenously (IV) over 30-90 minutes on days 1 and 15. Treatment repeats every 28 days for a maximum of 24 cycles in the absence of disease progression or unacceptable toxicity. ARM B: Patients receive trifluridine and tipiracil hydrochloride orally (PO) twice daily (BID) on days 1-5 and 8-12, or regorafenib PO once daily (QD) on days 1-21, at the discretion of the treating physician. Treatment repeats every 28 days for a maximum of 24 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days and then every 3 months for up to 3 years after randomization. ;


Study Design


Related Conditions & MeSH terms

  • Adenocarcinoma
  • Carcinoma
  • Colonic Neoplasms
  • Colorectal Neoplasms
  • Metastatic Colon Adenocarcinoma
  • Metastatic Colorectal Carcinoma
  • Metastatic Rectal Adenocarcinoma
  • Rectal Neoplasms
  • Stage III Colon Cancer AJCC v8
  • Stage III Colorectal Cancer AJCC v8
  • Stage III Rectal Cancer AJCC v8
  • Stage IIIA Colon Cancer AJCC v8
  • Stage IIIA Colorectal Cancer AJCC v8
  • Stage IIIA Rectal Cancer AJCC v8
  • Stage IIIB Colon Cancer AJCC v8
  • Stage IIIB Colorectal Cancer AJCC v8
  • Stage IIIB Rectal Cancer AJCC v8
  • Stage IIIC Colon Cancer AJCC v8
  • Stage IIIC Colorectal Cancer AJCC v8
  • Stage IIIC Rectal Cancer AJCC v8
  • Stage IV Colon Cancer AJCC v8
  • Stage IV Colorectal Cancer AJCC v8
  • Stage IV Rectal Cancer AJCC v8
  • Stage IVA Colon Cancer AJCC v8
  • Stage IVA Colorectal Cancer AJCC v8
  • Stage IVA Rectal Cancer AJCC v8
  • Stage IVB Colon Cancer AJCC v8
  • Stage IVB Colorectal Cancer AJCC v8
  • Stage IVB Rectal Cancer AJCC v8
  • Stage IVC Colon Cancer AJCC v8
  • Stage IVC Colorectal Cancer AJCC v8
  • Stage IVC Rectal Cancer AJCC v8
  • Unresectable Colon Adenocarcinoma
  • Unresectable Colorectal Carcinoma
  • Unresectable Rectal Adenocarcinoma

NCT number NCT03992456
Study type Interventional
Source Academic and Community Cancer Research United
Contact
Status Active, not recruiting
Phase Phase 2
Start date April 24, 2020
Completion date October 7, 2024

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