Table 1. p15 and clusterin expression in human pituitary adenomas.

		p15 n (%)				Clusterin n (%)
Intensity (%)		0–5	6–50	51–100		0–5	6–50	51–100
Tumor Types	n				n
GH/PRL	27	16(59)	4(15)	7(26)	17	13(76)	3(18)	1(6)
Gonadotroph	43	8(18)	5(12)	30(70)	36	1(3)	2(6)	33(92)
ACTH	14	2(14)	1(7)	11(79)	10	1(10)	0(0)	9(90)
Carcinoma	N/A				12	9(76)	2(16)	1(8)
Normal pituitary	5	1(20)	2(40)	2(40)	4	2(50)	2(50)	0(0)

Protein distribution differences between GH/PRL and gonadotroph tumors, p = 0.0006 for p15, and p = 0.0001 for clusterin (Wilcoxon Rank Sum Test). N/A- not available.