Prognostic significance of biomarkers (c-erbB-2, p53, proliferating cell nuclear antigen, and DNA content) in salivary duct carcinoma.
Salivary duct carcinoma (SDC), a rare neoplasm of the major salivary glands, is a high-grade carcinoma with a predilection for elderly men. The authors investigated the prognostic role of p53, c-erbB2, proliferating cell nuclear antigen (PCNA), and DNA flow cytometry in a pathobiological evaluation of a cohort of 30 patients with these neoplasms. The patient group comprised 24 men and 6 women, with ages ranging from 22 to 87 years (mean = 61 years). Twenty-eight tumors were located in the parotid gland and two in the submandibular gland. Tumor size ranged from 1.0 to 8.0 cm (mean = 3.48 cm). Regional metastases were found in 73.3% (22 patients), systemic metastases in 43.3% (13 patients), and recurrences in 8 (26.6%) patients. DNA aneuploidy was found in 18 tumors (58.0%) and DNA diploidy in 12 (42%), with proliferative fractions ranging from 8.60% to 15.5 (mean = 10.6%). p53 protein nuclear immunostaining was positive in 56.6% and c-erbB2 overexpression was observed in 63% of the tumors. PCNA positivity ranged from 16.5% to 91.0%, with a mean of 49.5%. p53 immunopositivity, DNA aneuploidy, high growth, and proliferative fractions by PCNA and flow cytometry did not correlate with patient outcome. These results indicate that tumor size (P = .05), distant metastasis (P = .006), and C-erbB2 amplification (P = .04) are independent prognostic parameters in patients with salivary duct carcinoma.
Felix
A
A
Department of Pathology, University of Texas, M.D. Anderson Cancer Center, Houston 77030, USA.
El-Naggar
A K
AK
Press
M F
MF
Ordonez
N G
NG
Fonseca
I
I
Tucker
S L
SL
Luna
M A
MA
Batsakis
J G
JG
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D002277:Carcinoma / Q000737:chemistry* / Q000235:genetics / Q000473:pathology*; D004273:DNA, Neoplasm / Q000032:analysis*; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis; D012468:Salivary Gland Neoplasms / Q000737:chemistry* / Q000235:genetics / Q000473:pathology*; D013194:Staining and Labeling; D016159:Tumor Suppressor Protein p53 / Q000032:analysis
D014408:Biomarkers, Tumor; D004273:DNA, Neoplasm; D018809:Proliferating Cell Nuclear Antigen; D018719:Erb-b2 Receptor Tyrosine Kinases; D016159:Tumor Suppressor Protein p53