title: Apocrine carcinomas of the breast in Turkish women: hormone receptors, c-erbB-2 and p53 immunoexpression.
abstract: The aims of this study were twofold: (i) to determine the occurrence frequency of apocrine carcinoma of the breast (ApBCa) in Turkish breast cancer (BCa) patients; and (ii) to evaluate the expression of estrogen receptor (ER), progesterone receptor (PR), androgen receptor (AR), gross cystic disease protein-15 (GCDFP-15), c-erbB-2, and p53 in these cases. Six hundred and twenty-six cases of BCa were studied immunohistochemically (streptoavidin-biotin horseradish peroxidase method). The results of ApBCa were compared with those of invasive ductal carcinoma not otherwise specified type (IDC-NOS) cases of similar grade. Thirteen cases of ApBCa were encountered, accounting for 2.1% of all BCa cases. Immunohistochemically, ApBCa positivity was as follows: GCDFP-15 (100%), ER (39%), PR (8%), AR (54%), p53 (39%), and c-erbB-2 (85%). In the IDC-NOS group, GCDFP-15* was expressed in less than 50% of the tumors. The occurrence frequencies of the other markers were as follows: ER (69%), PR (69%)*, AR (46%), c-erbB-2 (0%)*, and p53 (31%), (*) indicating significant differences between the two groups. For Turkish BCa patients, (i) the occurrence rate of ApBCa (2.1%) was high; and (ii) the following combination would allow for an immunohistochemical identification of ApBCa: GCDFP-15(+), c-erbB-2(+), and PR(-).
authors.affiliation: Department of Pathology, Marmara University Hospital, Altunizade, Istanbul 81190, Turkey. hkaya@superonline.com
authors.forename: Handan
authors.initials: H
authors.lastname: Kaya
authors.forename: Süheyla Uyar
authors.initials: SU
authors.lastname: Bozkurt
authors.forename: Ipek
authors.initials: I
authors.lastname: Erbarut
authors.forename: Mustafa B A
authors.initials: MB
authors.lastname: Djamgoz
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology; D000328:Adult; D000368:Aged; D001050:Apocrine Glands / Q000378:metabolism / Q000473:pathology; D014408:Biomarkers, Tumor / Q000378:metabolism; D001943:Breast Neoplasms / Q000378:metabolism* / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000378:metabolism / Q000473:pathology; D002352:Carrier Proteins / Q000378:metabolism; D005260:Female; D006023:Glycoproteins / Q000378:metabolism; D006801:Humans; D007124:Immunoenzyme Techniques; D026901:Membrane Transport Proteins; D008875:Middle Aged; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000378:metabolism*; D011987:Receptors, Steroid / Q000378:metabolism*; D013544:Sweat Gland Neoplasms / Q000378:metabolism* / Q000473:pathology; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism*
chemical_list: D014408:Biomarkers, Tumor; D002352:Carrier Proteins; D006023:Glycoproteins; D026901:Membrane Transport Proteins; D018719:Erb-b2 Receptor Tyrosine Kinases; D011987:Receptors, Steroid; D016159:Tumor Suppressor Protein p53; C488892:PIP protein, human