title: pS2 is an independent factor of good prognosis in primary breast cancer.
abstract: In breast cancer, oestrogen regulated genes, such as pS2, may be expressed in well differentiated tumours with a good prognosis. We have examined pS2 mRNA expression in 78 primary, untreated breast cancers and related pS2 expression to disease behaviour and known prognostic factors. pS2 mRNA expression was detected in 25/78 (32%) of cancers and was significantly associated with a moderate/high oestrogen receptor content (P = 0.045, Chi Square test). pS2 mRNA expression was associated with freedom from disease at median 31 months clinical and radiological follow-up (P = 0.015, Fisher's exact test, odds ratio 8.6). Using multiple logistic regression analysis of six potential prognostic factors only pathological axillary node status (P < 0.01) and pS2 mRNA expression (P < 0.05) provided independent prognostic information. Furthermore, pS2 was associated with a good prognosis in the axillary node positive patients where only 1/13 (8%) with pS2 mRNA expression compared with 13/29 (45%) without detectable expression had recurrence of their disease. These data provides strong support for pS2 as a useful independent prognostic factor in primary breast cancer.
authors.affiliation: University Department of Surgery, Royal Infirmary, Edinburgh, UK.
authors.forename: A M
authors.initials: AM
authors.lastname: Thompson
authors.forename: R A
authors.initials: RA
authors.lastname: Hawkins
authors.forename: R A
authors.initials: RA
authors.lastname: Elton
authors.forename: C M
authors.initials: CM
authors.lastname: Steel
authors.forename: U
authors.initials: U
authors.lastname: Chetty
authors.forename: D C
authors.initials: DC
authors.lastname: Carter
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers; D001943:Breast Neoplasms / Q000378:metabolism* / Q000473:pathology / Q000601:surgery*; D015342:DNA Probes; D004967:Estrogens / Q000378:metabolism; D005260:Female; D005500:Follow-Up Studies; D015870:Gene Expression; D006801:Humans; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000032:analysis* / Q000096:biosynthesis; D011379:Prognosis; D011506:Proteins; D012333:RNA, Messenger / Q000378:metabolism; D000071163:Trefoil Factor-1; D025521:Tumor Suppressor Proteins
chemical_list: D015415:Biomarkers; D015342:DNA Probes; D004967:Estrogens; D009363:Neoplasm Proteins; D011506:Proteins; D012333:RNA, Messenger; C051838:TFF1 protein, human; D000071163:Trefoil Factor-1; D025521:Tumor Suppressor Proteins