title: PTEN expression in clear cell adenocarcinoma of the ovary.
abstract: OBJECTIVE
  In this study, we analyzed the PTEN expression in a large collection of clear cell adenocarcinomas of the ovary. Furthermore, we analyzed the expression of cyclin D1 and p27, and investigated the correlation among all these variables.
  
  
  METHODS
  Totally, 40 clear cell adenocarcinomas were included in this study. The protein expression of PTEN, cyclin D1 and p27 was investigated by immunohistochemistry.
  
  
  RESULTS
  Of 40 clear cell adenocarcinomas, 15 (37.5%) lost all PTEN immunoreactivity. There was no significant correlation between PTEN expression and clinical stage. Cyclin D1 expression and loss of p27 expression were detected in 16/40 (40.0%) and 14/40 (35.0%) clear cell adenocarcinoma cases. There was no significant correlation between PTEN expression and cyclin D1 or p27 protein expression.
  
  
  CONCLUSIONS
  Loss of PTEN expression is relatively common and both cyclin D1 and p27 expressions are not related with PTEN inactivation in clear cell adenocarcinoma of the ovary.
authors.affiliation: Department of Obstetrics and Gynecology, Osaka City General Hospital, Miyakojima, Osaka 534-0021, Japan.
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Hashiguchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tsuda
authors.forename: Takeshi
authors.initials: T
authors.lastname: Inoue
authors.forename: Ross S
authors.initials: RS
authors.lastname: Berkowitz
authors.forename: Samuel C
authors.initials: SC
authors.lastname: Mok
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000378:metabolism*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019938:Cyclin D1 / Q000096:biosynthesis; D050760:Cyclin-Dependent Kinase Inhibitor p27 / Q000096:biosynthesis; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000378:metabolism*; D051059:PTEN Phosphohydrolase / Q000096:biosynthesis*
chemical_list: D019938:Cyclin D1; D050760:Cyclin-Dependent Kinase Inhibitor p27; D051059:PTEN Phosphohydrolase; C494929:PTEN protein, human