Table 2. Relationship between PKCδ expression and characteristics of the breast carcinomas.

	mRNA (PCR)			Protein (western blot)					Protein (ELISA)
				78 kDa isoform			160 kDa isoform
Tumour characteristics	n	Median	P-value	n	Median	P-value	Median	P-value	n	Median	P-value
Size (cm)
⩽2	53	1.75	0.406*	20	0.0288	0.139*	0.2155	0.989*	20	10.56	0.635*
>2–5	127	2.04		62	0.0896		0.2051		62	12.49
>5	15	1.43		8	0.0367		0.2576		8	8.48
Grade
1 and 2	98	2.13	0.613	38	0.0315	0.016	0.2024	0.883	38	7.88	0.243
3	100	1.8		54	0.1003		0.1968		57	12.80
Nodal status
Negative	87	1.98	0.874	43	0.0991	0.401	0.1555	0.290	41	11.68	0.580
Positive	109	1.89		48	0.0663		0.2981		53	9.57
ER
Negative	51	1.34	0.007	24	0.0836	0.349	0.1369	0.030	24	14.30	0.977
Positive	151	2.28		69	0.0626		0.3236		73	9.57
Age
⩽50	65	1.97	0.029	24	0.0744	0.767	0.2335	0.900	28	7.82	0.392
>50	143	2.54		70	0.0685		0.2		70	11.45
Histological type
Ductal	173	1.88	0.250*	83	0.0742	0.889*	0.2104	0.891*	86	9.71	0.336*
Lobular	19	2.15		6	0.1447		0.0917		7	20.87
Ductal and lobular	11	2.89		3	0.062		0.1792		3	26.88

ER=oestrogen receptor; PKC=protein kinase C.

P-values were determined by either the Mann–Whitney U-test or Kruskall–Wallis test^*.