title: Flow cytometric DNA analysis as prognostic factor in human breast carcinoma.
abstract: Fresh tumour tissue from 198 primary invasive breast carcinomas was analysed by DNA flow cytometry. 108 tumours were non-diploid. A significantly higher proportion of non-diploid tumours was found among node-positive patients, patients with oestrogen receptor negative tumours and among patients with ductal carcinomas. The survival of patients with diploid and non-diploid tumours was not significantly different (p = 0.1). Totally, 145 tumours were analyzed with respect to S-phase fraction (SPF). The distribution of SPF was different in diploid and non-diploid tumours. A low SPF group, defined as the lower SPF quartile (< or = 4.6% in diploid and < or = 8.5% in non-diploid tumours), was associated with highly differentiated tumours and oestrogen receptor positive tumours. Histological grading revealed a highly significant correlation to SPF. 57% of ductal carcinomas grade I (8 out of 14), 30% of ductal carcinomas grade II (20 out of 67) and 5% of ductal carcinomas grade III (2 out of 37) had a low SPF. Patients within the low SPF group had a significantly longer survival than had patients within the high SPF group (p = 0.006). In a multivariate analysis the SPF was found to be an additional prognostic factor next to node status and ER status.
authors.affiliation: Department of Biochemistry, Norwegian Radium Hospital, Montebello, Oslo.
authors.forename: L
authors.initials: L
authors.lastname: Ottestad
authors.forename: E O
authors.initials: EO
authors.lastname: Pettersen
authors.forename: J M
authors.initials: JM
authors.lastname: Nesland
authors.forename: E
authors.initials: E
authors.lastname: Hannisdal
authors.forename: S D
authors.initials: SD
authors.lastname: Fosså
authors.forename: K M
authors.initials: KM
authors.lastname: Tveit
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology; D002277:Carcinoma / Q000235:genetics* / Q000473:pathology; D004273:DNA, Neoplasm / Q000032:analysis*; D005434:Flow Cytometry; D006801:Humans; D008875:Middle Aged; D011003:Ploidies; D011379:Prognosis; D016196:S Phase
chemical_list: D004273:DNA, Neoplasm