Table 1.

Immunohistochemical expression of α1 sub-units in clinical naevi and melanoma samples

Diagnosis	Histological or clinical data		No. of cases analyzed	No. of positive cases	Staining intensity		Area stained (%)
					+	++	(min-max)	mean
Naevi	Dermal		20	2/20	2	0	20–40	30
	Junctional		11	0/11	0	0	0	0
	Mixt		23	1/23	1	0	10	10
	Lentigo		3	0/3	0	0	0	0
	TOTAL		57	3/57	3	0	10–40	23
Melanomas	SSM		26	5/26	1	4	15–80	42
	NM		3	1/3	1	0	30	30
	Acral		5	1/5	1	0	80	80
	Dubreuil		10	1/10	1	0	50	50
	Metastases	Lymph nodes	9	2/9	0	2	25–75	50
		Brain	18	13/18	1	12	10–80	73
		Others	11	4/11	2	2	25–75	53
	Breslow	<1 mm	18	0/18	0	0	0	0
		1–2 mm	8	1/8	1	0	50	50
		2–4 mm	8	3/8	1	2	25–30	28
		>4 mm	10	4/10	2	2	15–80	59
	Total		82	27/82	7	20	10–80	57