Of the eight cancer cell lines examined, LN-18, HCC97H, SKOV3, OVCAR3, CAOV3, HCC97H all expressed ~2.4kb and 1.7 kb transcripts of human CPE gene, while in the liver cancer line HCC97L, these transcripts were undetectable even with a large amount of mRNA input, possibly due to its very low abundance, since expression of CPE mRNA transcripts in those cells could be detected by a more sensitive RT-PCR assay [24]. Here, CPE is linked to cancer.