Table 5

Validation of array data by real-time quantitative RT-PCR

Gene
Probe set
Correlation coefficient



U133A
U95A
U133A versus RT-PCR (n = 19)
U133A versus U95A (n = 11)
U95A versus RT-PCR (n = 11)

ICAM1
202637_s_at
32640_at
0.9329
0.8916
0.8560
TNFAIP3
202643_s_at
595_at
0.9437
0.9537
0.9792
IL1B
39402_at
39402_at
0.9443
0.9623
0.9667
PDE4B
211302_s_at
33705_at
0.8880
0.9583
0.6307
PPP1R15A
37028_at
37028_at
0.9519
0.9869
0.7649

Pearson correlation coefficients between real-time quantitative RT-PCR data (-ΔΔCT t1 versus t0) and the microarray data from the GeneChip U133A and U95A for five selected genes found to be differentially regulated in responders and nonresponders are presented.

Koczan et al. Arthritis Research & Therapy 2008 10:R50   doi:10.1186/ar2419