title: HER-2 and INT-2 amplification estimated by quantitative PCR in paraffin-embedded ovarian cancer tissue samples.
abstract: Competitive polymerase chain reaction (PCR) systems were developed for rapid and quantitative estimation of HER-2 (c-erbB-2) and INT-2 oncogene amplification in paraffin-embedded ovarian cancer tissue samples. The beta-globin gene was used as reference and DNA from paraffin-embedded placenta tissue as single copy control. Reliability of the PCR method could be demonstrated by comparing dot blot data with PCR data of identical tumour samples. The PCR method was used to determine HER-2 and INT-2 copy numbers in 196 ovarian cancer samples. HER-2 and INT-2 were found to be amplified in 40 and 19%, respectively. In 8% HER-2 copy numbers were greater than five, but no high INT-2 copies were noted. Kaplan-Meier estimates did not reveal significant association with overall survival. Indirect correlation between HER-2 and INT-2 amplification was observed. The present PCR system is a valuable method for prospective and retrospective studies.
authors.affiliation: Ludwig Boltzmann Institute of Experimental Endocrinology, Department of Cellular Endocrinology, University of Vienna, Austria.
authors.forename: C
authors.initials: C
authors.lastname: Hruza
authors.forename: K
authors.initials: K
authors.lastname: Dobianer
authors.forename: A
authors.initials: A
authors.lastname: Beck
authors.forename: K
authors.initials: K
authors.lastname: Czerwenka
authors.forename: H
authors.initials: H
authors.lastname: Hanak
authors.forename: M
authors.initials: M
authors.lastname: Klein
authors.forename: S
authors.initials: S
authors.lastname: Leodolter
authors.forename: M
authors.initials: M
authors.lastname: Medl
authors.forename: S
authors.initials: S
authors.lastname: Müllauer-Ertl
authors.forename: J
authors.initials: J
authors.lastname: Preiser
mesh_terms: D001483:Base Sequence; D004273:DNA, Neoplasm / Q000032:analysis; D066246:ErbB Receptors / Q000235:genetics; D005260:Female; D051518:Fibroblast Growth Factor 3; D005346:Fibroblast Growth Factors / Q000235:genetics; D005784:Gene Amplification; D006801:Humans; D008969:Molecular Sequence Data; D010051:Ovarian Neoplasms / Q000235:genetics* / Q000401:mortality; D016133:Polymerase Chain Reaction / Q000379:methods*; D011518:Proto-Oncogene Proteins / Q000235:genetics; D011519:Proto-Oncogenes / Q000235:genetics*; D018719:Erb-b2 Receptor Tyrosine Kinases; D013997:Time Factors
chemical_list: D004273:DNA, Neoplasm; D066246:ErbB Receptors; D051518:Fibroblast Growth Factor 3; D005346:Fibroblast Growth Factors; D011518:Proto-Oncogene Proteins; D018719:Erb-b2 Receptor Tyrosine Kinases; C496444:FGF3 protein, human