The Tumor Suppressive Roles and Prognostic Values of STEAP Family Members in Breast Cancer

Table 1

The expression levels of STEAP family members in human normal tissues.

Organs	STEAP family members
	STEAP1		STEAP2		STEAP3		STEAP4
	RNA	Protein	RNA	Protein	RNA	Protein	RNA	Protein
Cerebral cortex	+	++	++	++	+	-		N.E.^△
Thyroid gland	+	-	+	++	+	++	+++	N.E.
Lung	+	+++	+	++	+	++	++	N.E.
Esophagus	+	-	+	++	+	++	++	N.E.
Stomach	+	-	+	++	+	++	+	N.E.
Colon/rectum	+	-	+	++	+	++	+	N.E.
Liver	++	-	+	++	+++	++	+++	N.E.
Pancreas	+	-	+	++	+	+	+	N.E.
Kidney	+	-	+	++	+	++	+	N.E.
Urinary bladder	+	-	+	++	+	++	++	N.E.
Testis	+	++	+	++	+	++	++	N.E.
Prostate	+++	++	+++	++	+	++	++	N.E.
Ovary	+	-	++	+	+	++	++	N.E.
Endometrium	+	-	+	++	+	++	+	N.E.
Cervix uterine	+	-	+	++	+	++	+	N.E.
Breast	++	-	+	++	+	++	+++	N.E.
Skin	+	-	+	++	+	+	+	N.E.
Lymph node	+	-	+	++	+	++	+++	N.E.
Bone marrow	-	-	+	++	+	+	+	N.E.

RNA and protein expression: not detected (-); low levels (+); medium levels (++); high levels (+++). ^△N.E. means not examined.