Expression of the proto-oncogene bcl-2 in uterine cervical squamous cell carcinoma: its relationship to clinical outcome.
We studied bcl-2 expression in patients with uterine cervical squamous cell carcinoma and correlated this phenomenon with survival. Immunohistochemical analysis with a monoclonal antibody specific for bcl-2 was used to detect the protein in tumor samples from 259 patients undergoing surgery for squamous cell carcinoma of the uterine cervix. Of the total, 67% (174) of the tumors were bcl-2 negative, and 33% (85) were positive. No significant difference in survival at five years was noted between patients with negative (78%) and positive (82%) tumors. However, when bcl-2 positive tumors were divided into partially stained (62 of 85, 73%), and diffusely stained (23 of 85, 27%) groups, the patients with partial staining had a better prognosis than those with diffused or negative (p < 0.01), staining (p < 0.05) (5 year survivals, respectively; 92%, 61%, and 78%). Though detection of bcl-2 positivity may itself not have clinical value for uterine cervical squamous cell carcinoma, the staining characters may add to predicting prognosis.
Uehara
T
T
Department of Pathology, Saitama Cancer Center, Japan.
Kuwashima
Y
Y
Izumo
T
T
Kishi
K
K
Shiromizu
K
K
Matsuzawa
M
M
D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal; D000918:Antibody Specificity; D002294:Carcinoma, Squamous Cell / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D004396:Coloring Agents / Q000378:metabolism; D005260:Female; D015870:Gene Expression; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D011379:Prognosis; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins / Q000032:analysis* / Q000096:biosynthesis; D019253:Proto-Oncogene Proteins c-bcl-2; D002583:Uterine Cervical Neoplasms / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism
D000911:Antibodies, Monoclonal; D004396:Coloring Agents; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2