Primary tumour location was captured prospectively on the case report form in the SIRFLOX and the FOXFIRE Global studies including 739 patients:
- Right-sided primary (RSP) tumours were defined as any primary tumour proximal to the splenic flexure
- Left-sided primary (LSP) tumours included any primary tumour at the splenic flexure, the more distal colon or the rectum
Overall survival and progression-free survival data were examined independently for patients with RSP and LSP.
Tumour response was determined according to Response Evaluation Criteria In Solid Tumours (RECIST) version 1.0.
All analyses were performed on the intention-to-treat population.
Van Hazel G et al. Ann Oncol 2017; ESMO 19th WCGIC, Abs. LBA-006.