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Hur, H,Kim, N K,Kim, H G,Min, B S,Lee, K Y,Shin, S J,Cheon, J H,Choi, S H Nature Publishing Group 2012 The British journal of cancer Vol.106 No.1
<P><B>Background:</B></P><P>This study aims to evaluate the effectiveness of adenosine triphosphate-based chemotherapy response assay (ATP-CRA)-guided neoadjuvant chemotherapy for increasing resectability in patients with unresectable colorectal liver metastasis.</P><P><B>Patients and methods:</B></P><P>Patients were randomised into two groups: Group A was treated by conventional chemotherapy regimen and Group B was treated by chemotherapy regimen according to the ATP-CRA. Three chemotherapeutic agents (5-fluorouracil, oxaliplatin and irinotecan) were tested by ATP-CRA and more sensitive agents were selected. Either FOLFOX or FOLFIRI was administered. Between Group A and B, treatment response and resectability were compared.</P><P><B>Results:</B></P><P>Between November 2008 and October 2010, a total 63 patients were randomised to Group A (<I>N</I>=32) or Group B (<I>N</I>=31). FOLFOX was more preferred in Group A than in Group B (26 out of 32 (81.3%) <I>vs</I> 20 out of 31 (64.5%)). Group B showed better treatment response than Group A (48.4% <I>vs</I> 21.9%, <I>P</I>=0.027). The resectability of hepatic lesion was higher in Group B (35.5% <I>vs</I> 12.5%, <I>P</I>=0.032). Mean duration from chemotherapy onset to the time of liver resection was 11 cycles (range 4–12) in Group A and 8 cycles (range 8–16) in Group B.</P><P><B>Conclusion:</B></P><P>This study showed that tailored-chemotherapy based on ATP-CRA could improve the treatment response and resectability in initially unresectable colorectal liver metastasis.</P>