Table 2 14 selected differential expression genes.

Gene Symbol	The 25 breast cancers					NKI-295 dataset			GIS-251 dataset
	FNAB array	FFPE array	FFPE qPCR	FFPE vs. FNAB	FFPE vs. qPCR	Array	OS	DMFS	Array	OS	RFS
	P¹	P¹	P¹	r²	r³	P¹	P⁴	P⁴	P¹	P⁴	P⁴
AKR7A3	0.001	0.000	0.000	0.701	0.653	0.000	0.000	0.248	0.000	0.284	0.787
ANKRA2	0.001	0.009	0.021	0.522	0.390	0.000	0.021	0.071	0.000	0.064	0.139
ANLN	0.000	0.002	0.007	0.731	0.543	0.000	0.002	0.010	0.000	0.009	0.004
CA12	0.000	0.000	0.000	0.607	0.710	0.000	0.010	0.299	0.000	0.358	0.468
DNALI1	0.000	0.000	0.000	0.681	0.646	0.000	0.009	0.097	0.000	0.565	0.582
ERBB2	0.000	0.008	0.000	0.370	0.815	0.000	0.005	0.024	0.000	0.006	0.001
ESR1	0.000	0.000	0.000	0.787	0.862	0.000	0.004	0.030	0.000	0.698	0.742
FUT3	0.001	0.001	0.003	0.542	0.444	0.000	0.061	0.009	0.000	0.023	0.287
GREB1	0.001	0.001	0.000	0.732	0.711	0.000	0.054	0.667	0.000	0.023	0.487
KIAA1407	0.000	0.000	0.010	0.460	0.337	0.000	< 0.001	0.000	0.000	0.006	0.197
KIF2C	0.000	0.001	0.020	0.710	0.647	0.000	< 0.001	0.000	0.000	0.022	0.004
LONRF2	0.001	0.007	0.004	0.398	0.588	0.000	0.001	0.168	0.000	0.294	0.393
MAPT	0.000	0.000	0.000	0.740	0.677	0.000	0.007	0.023	0.000	0.001	0.014
PGR	0.000	0.000	0.000	0.870	0.674	0.000	< 0.001	< 0.001	0.000	0.022	0.206

FNAB, fine needle aspiration biopsy; FFPE, formalin-fixed, paraffin-embedded tissue; qPCR, Quantitative RT-PCR; OS, Overall survival; DMFS, Distant metastasis free survival; RFS, Relapse free survival; ¹ P-value of ANOVA test among the 4 ER/Her2 groups; ²Correlation coefficient, Pearson correlation test between FFPE array and FNA array (value in boldface type is statistically significant, P < 0.05); ³Correlation coefficient, Pearson correlation test between FFPE array and FFPE qPCR (value in boldface type is statistically significant, P < 0.05); ⁴ P-value of Log-rank Test.

ISSN: 1471-2407