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Review
. 2017 Jan 20;3(2):163-173.
doi: 10.1016/j.jcmgh.2017.01.006. eCollection 2017 Mar.

Colorectal Cancer Liver Metastasis: Evolving Paradigms and Future Directions

Luai R Zarour  1 , Sudarshan Anand  2 , Kevin G Billingsley  3 , William H Bisson  4 , Andrea Cercek  5 , Michael F Clarke  6 , Lisa M Coussens  2 , Charles E Gast  7 , Cristina B Geltzeiler  8 , Lissi Hansen  9 , Katherine A Kelley  8 , Charles D Lopez  10 , Shushan R Rana  11 , Rebecca Ruhl  7 , V Liana Tsikitis  12 , Gina M Vaccaro  10 , Melissa H Wong  2 , Skye C Mayo  3
Affiliations
Review

Colorectal Cancer Liver Metastasis: Evolving Paradigms and Future Directions

Luai R Zarour et al. Cell Mol Gastroenterol Hepatol. .

Abstract

In patients with colorectal cancer (CRC) that metastasizes to the liver, there are several key goals for improving outcomes including early detection, effective prognostic indicators of treatment response, and accurate identification of patients at high risk for recurrence. Although new therapeutic regimens developed over the past decade have increased survival, there is substantial room for improvement in selecting targeted treatment regimens for the patients who will derive the most benefit. Recently, there have been exciting developments in identifying high-risk patient cohorts, refinements in the understanding of systemic vs localized drug delivery to metastatic niches, liquid biomarker development, and dramatic advances in tumor immune therapy, all of which promise new and innovative approaches to tackling the problem of detecting and treating the metastatic spread of CRC to the liver. Our multidisciplinary group held a state-of-the-science symposium this past year to review advances in this rapidly evolving field. Herein, we present a discussion around the issues facing treatment of patients with CRC liver metastases, including the relationship of discrete gene signatures with prognosis. We also discuss the latest advances to maximize regional and systemic therapies aimed at decreasing intrahepatic recurrence, review recent insights into the tumor microenvironment, and summarize advances in noninvasive multimodal biomarkers for early detection of primary and recurrent disease. As we continue to advance clinically and technologically in the field of colorectal tumor biology, our goal should be continued refinement of predictive and prognostic studies to decrease recurrence after curative resection and minimize treatment toxicity to patients through a tailored multidisciplinary approach to cancer care.

Keywords: 5-FU, fluorouracil; Biomarkers; CDX2, caudal-type homeobox transcription factor 2; CEA, carcinoembryonic antigen; CK, cytokeratin; CRC, colorectal cancer; CRLM, colorectal cancer liver metastasis; CTC, circulating tumor cells; Colorectal Cancer Liver Metastasis; DFS, disease-free survival; EGFR, epidermal growth factor receptor; EpCAM, epithelial cell adhesion molecule; HAI, hepatic arterial infusion; Hepatic Arterial Infusion; High-Risk Colorectal Cancer; IL, interleukin; LV, leucovorin; MSI, microsatellite instability; OS, overall survival; PD, programmed death; Recurrence; TH, T-helper; cfDNA, cell-free DNA; dMMR, deficient mismatch repair; miRNA, microRNA.

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Figures

Figure 1
Figure 1
Treatment and management of metastatic colon cancer to the liver will require a multidisciplinary approach that includes identification of high-risk cohorts, understanding how to modulate the immune microenvironment, and identification of novel effective blood-based biomarkers to design targeted and real-time treatment for high-risk patients. Ultimately, successful management of these patients will acknowledge a balance of risk recurrence with their quality of life. Chemo, chemotherapy.
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