Overexpressed in cancer
Peak P FDR Normal Cancer Ratio1 Assignment
p741.6 0.0001 0.0008 8.1 12.0 1.5 SM (34:1) K+
p750.5 <0.0001 0.0002 7.8 14.6 1.9  
p772.7 <0.0001 0.0002 5.5 9.1 1.6 PC (32:0) K+
p798.6 0.0001 0.0005 7.5 14.5 1.9 PC (34:1) K+
n552.6 0.0006 0.0019 3.1 3.5 1.1  
n588.2 0.0001 0.0005 8.3 12.0 1.4  
n599.5 0.0001 0.0008 7.3 9.6 1.3 PI (18:0/0:0)
n616.6 0.0004 0.0016 2.4 3.3 1.4  
n687.6 0.0007 0.0023 5.8 7.5 1.3  
n701.7 <0.0001 0.0001 3.4 5.5 1.6  
n835.6 <0.0001 <0.0001 3.0 7.5 2.5 PI (16:0/18:1)
n857.7 <0.0001 <0.0001 1.4 2.7 2.0  
n861.7 <0.0001 <0.0001 1.8 4.4 2.4 PI-Cer (d18:1/22:0)
n885.7 <0.0001 0.0002 3.0 13.9 4.8 PI (18:0/20:4)
Underexpressed in cancer
Peak P FDR Normal Cancer Ratio1 Assignment
p518.4 0.0003 0.0015 1.7 1.2 0.7 LPC (18:3)
p524.4 0.0002 0.0012 2.2 3.5 0.4 LPS (18:1)
p572.3 0.0005 0.0017 2.2 1.1 0.5  
p650.5 0.0002 0.0009 3.0 2.0 0.7  
p672.1 0.0004 0.0016 3.6 1.5 0.4  
p701.6 0.0001 0.0008 2.6 1.3 0.5  
p705.5 <0.0001 0.0002 5.8 3.6 0.6  
p717.5 0.0008 0.0025 4.8 2.8 0.6  
n555.2 0.0003 0.0015 3.1 3.5 0.7  
n563.2 0.0005 0.0017 4.8 3.2 0.7  
n584.5 <0.0001 0.0003 14.5 6.3 0.4  
n620.2 0.0001 0.0008 11.5 6.4 0.6  
1Ratio, Ratio of cancer to normal;
2p741.6, m/z 741.6 in the positive ion mode;
3n552.6, m/z 552.6 in the negative ion mode
FDR: False Discovery Rate; SM: Sphingomyelin; PC: Phosphatidylcholine; PI: Phosphatidylinositol; PI:Cer, Phosphatidylinositol:ceramide; LPC: Lysophosphatidylcholine; LPS: Lysophosphatidylserine
Table 2: Peak differentially expressed between papillary thyroid carcinoma and normal tissue at p<0.001.