title: [Flow cytometry detected S-phase fraction and ploidy as prognostic parameters in primary, node-negative breast cancer].
abstract: 100 specimens of patients with primary node-negative breast cancer were examined by flow cytometry. 64 tumours were shown to be diploid and 36 tumours were aneuploid. The median was the cut-off level for tumours with low S-phase (< or = 10.9%) and high S-phase values (> 10.9%). Aneuploid tumours were associated with high S-phase fraction. The average length of follow-up was 42 months. In univariate analysis for disease-free survival, diploid tumours were shown to have a slightly better prognosis than aneuploid tumours (p = 0.07). This trend could not be shown in multivariate analysis. The S-phase fraction proved to be an independent prognostic factor. Patients, whose tumours had S-phase fractions < or = 10.9%, had significantly longer disease-free survival in univariate (long-rank-test: p = 0.021), as well as in multivariate analysis according to the Cox regression model (p = 0.033). Since, as already stated, the S-phase fraction is an independent prognostic factor for node-negative breast cancer, further adjuvant therapy studies should take this factor into consideration.
authors.affiliation: Universitäts-Frauenklinik Hamburg.
authors.forename: K
authors.initials: K
authors.lastname: Winter
authors.forename: H
authors.initials: H
authors.lastname: Eidtmann
authors.forename: W
authors.initials: W
authors.lastname: Jonat
mesh_terms: D000328:Adult; D000368:Aged; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000401:mortality / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D003131:Combined Modality Therapy; D004273:DNA, Neoplasm / Q000032:analysis; D005260:Female; D005434:Flow Cytometry; D005500:Follow-Up Studies; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D015412:Mastectomy, Segmental; D008875:Middle Aged; D009367:Neoplasm Staging; D011003:Ploidies; D011960:Receptors, Estrogen / Q000032:analysis; D011980:Receptors, Progesterone / Q000032:analysis; D016196:S Phase / Q000502:physiology*; D015996:Survival Rate
chemical_list: D004273:DNA, Neoplasm; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone
vernacular_title: Durchflusszytometrisch ermittelte S-Phasen-Fraktion und Ploidie als Prognoseparameter beim primären, nodal negativen Mammakarzinom.