Kim J, Reber HA, Dry SM, et al. Unfavourable prognosis associated with K-ras gene mutation in pancreatic cancer surgical margins. Gut 2006;55:1598–1605.

In the Methods section, under Primers and probes and PCR assay the correct sequences should read:

“Quantitative real-time PCR was performed using the following primers:

K-ras, 5′-GGCCTGCTGAAAATGA-3′ (forward) and 5′-AAGGCACTCTTGCCTA-3′

(reverse); FRET probe, 5′-FAM-AGCTCCAACTACCACAAGTTTATATTC-BHQ-1-3′”