Table 1

Detection of pIRS21097-1105 in human hepatocellular carcinoma tissues by mass spectrometry of MHC-associated peptide extracts

Tumor tissue sampleNormal adjacent tissue sample
HCC1HCC2HCC3HCC4HCC5NAT2NAT3NAT4NAT5
++*++++++++NDNDND+ND
  • *Copies per cell: ND: not detected, +: <1, ++: 1–5, +++: 6–20.

  • pIRS2, phosphopeptide from insulin receptor substrate 2.