Mandard VE-822 mouse tumour regression grade, originally described for oesophageal cancer, is the most commonly used (51). It consists of five different grades based on ratio of fibrosis to tumours. We identified, for the first time, a group of genes that can be used as markers to quantify tumour response following neoadjuvant therapy in rectal cancer patients. Conclusions The list of the genes identified in this study could serve as molecular Inhibitors,research,lifescience,medical markers to complement existing histopathological factors in screening, diagnosis, follow up and therapeutic strategies for individualised care of patients (Figures 7,​,88). Figure 7 Potential biomarker for CRC. Genes identified in the study as potential biomarket

for CRC screening, diagnosis and disease progression Figure 8 Correlation gene expression and CRC management stratigies Acknowledgements

We would like to thank Inhibitors,research,lifescience,medical the National Breast Cancer Research Institute (NBCRI) for their financial support of the study. Disclosure: The authors declare no conflict of interest.
Surgical resection is the only curative option for liver metastases from colorectal cancer (CRLM); however, the incidence of unresectable CRLM remains high (1). Recently, systemic chemotherapy for unresectable metastatic colorectal cancer has remarkably progressed. In a retrospective analysis, more than 12% of cases of initially unresectable CRLM converted Inhibitors,research,lifescience,medical to resectable status after the patients showed responses to chemotherapy and were reported to show a good 5-year survival rate of more than 30% (2). Surgical procedures such as two-staged hepatectomy have also been developed for such cases (3,4). On the other hand, neoadjuvant chemotherapy followed by hepatic resection for initially resectable CRLM Inhibitors,research,lifescience,medical has also been suggested to be effective (5). Histopathological tumor regression due to preoperative

chemotherapy has recently been recognized Inhibitors,research,lifescience,medical to be an important indicator of a significantly better prognosis in patients with CRLM (6). In addition, a pathological complete response to preoperative chemotherapy was associated with a 5-year survival of 75% in patients with CRLM compared to 33% in patients with a minor pathological response (7). However, Adam et al. (8) showed that the incidence of pathological complete responses (pCRs) is insufficient, at approximately 4%, and 71% of the CRLM measured less than 3.0 cm in diameter in cases of pCR. Smaller liver deposits may be associated with mafosfamide a higher incidence of pCR due to preoperative chemotherapy. We herein report the case of a patient with synchronous solitary liver metastasis from sigmoid colon cancer. The maximum diameter of the liver deposit was 5.7 cm and its grade was therefore H2 according to the Japanese classification (9). A pCR was detected after the patient underwent deferred hepatic resection after neoadjuvant chemotherapy consisting of capecitabine, oxaliplatin and bevacizumab (XELOX + Bev).