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. 2007 Jul 17;35(15):e94. doi: 10.1093/nar/gkm510

Table 2.

Correlation between transcriptional profiles obtained from 10-year-old matched frozen and FFPE tissues

Frozen versus FFPE-Amplified Frozen versus FFPE-Restored
Number of genes R2 (Cy5) Number of genes R2 (Cy5)
Correlation between spots with intensities ⩾1000 1218 0.10 3568 0.38
Correlation between spots with ratios between 0.5 and 2 785 0.02 2395 0.50

Material obtained by IVT-amplification of RNA from 10-year-old frozen is compared to material recovered by IVT-amplification of RNA from 10-year-old FFPE tissues. Material obtained by IVT-amplification of RNA from 10-year-old frozen is compared to material recovered by CT-RT and IVT-amplification of RNA from 10-year-old FFPE tissues.