MIB-1 in endometrial carcinoma: prognostic significance with 5-year follow-up.
OBJECTIVE
MIB-1, a monoclonal antibody to the Ki-67 antigen, has presumptively been shown to be predictive of recurrent disease in patients with endometrial cancer. In order to more conclusively establish whether MIB-1 staining can be used as a prognostic indicator of recurrent disease or survival, a larger group of patients with a minimum follow-up of 5 years was analyzed.


METHODS
The tumors from 147 consecutive patients receiving primary surgical therapy for endometrial carcinoma were evaluated with the MIB-1 monoclonal antibody. Proliferation index was quantified by image analysis. Patients were followed for a minimum of 60 months. In addition to MIB-1 staining, histologic type, stage, grade, depth of invasion, lymphovascular space invasion, and peritoneal cytology were evaluated as prognostic indicators.


RESULTS
Twenty-five of 147 patients died during the study period. MIB-1 staining was not significantly elevated in advanced (stage II, III, and IV) as opposed to early (stage I) carcinomas (P = 0.38). In patients whose tumor MIB-1 staining was less than 33.0%, no deaths occurred. By multivariate analysis, only MIB-1 staining (P < 0.001), FIGO stage (P = 0.005), and LVI (P = 0.005) were shown to be independent prognostic indicators predictive of survival.


CONCLUSIONS
In this series of 147 consecutive patients with endometrial carcinoma, the monoclonal antibody MIB-1 was shown to be an independent prognostic indicator of 5-year survival. This follow-up further validates the previous work regarding the significance and potential usefulness of MIB-1 as a prognostic indicator.
Geisler
J P
JP
Department of Obstetrics and Gynecology, St. Vincent Hospitals and Health Services, Indianapolis, Indiana 46260, USA.
Geisler
H E
HE
Miller
G A
GA
Wiemann
M C
MC
Zhou
Z
Z
Crabtree
W
W
D000911:Antibodies, Monoclonal / Q000276:immunology*; D016889:Endometrial Neoplasms / Q000737:chemistry* / Q000401:mortality / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000032:analysis* / Q000276:immunology; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis
D000911:Antibodies, Monoclonal; D019394:Ki-67 Antigen