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Articles by R. L Milne
Total Records ( 2 ) for R. L Milne
  K. A Phillips , R. L Milne , D. W West , P. J Goodwin , G. G Giles , E. T Chang , J. C Figueiredo , M. L Friedlander , T. H.M Keegan , G Glendon , C Apicella , F. P O`Malley , M. C Southey , I. L Andrulis , E. M John and J. L. Hopper
 

Studies have examined the prognostic relevance of reproductive factors before breast cancer diagnosis, but most have been small and their overall findings inconclusive. Associations between reproductive risk factors and all-cause mortality after breast cancer diagnosis were assessed with the use of a population-based cohort of 3,107 women of White European ancestry with invasive breast cancer (1,130 from Melbourne and Sydney, Australia; 1,441 from Ontario, Canada; and 536 from Northern California, United States). During follow-up with a median of 8.5 years, 567 deaths occurred. At recruitment, questionnaire data were collected on oral contraceptive use, number of full-term pregnancies, age at first full-term pregnancy, time from last full-term pregnancy to breast cancer diagnosis, breastfeeding, age at menarche, and menopause and menopausal status at breast cancer diagnosis. Hazard ratios for all-cause mortality were estimated with the use of Cox proportional hazards models with and without adjustment for age at diagnosis, study center, education, and body mass index. Compared with nulliparous women, those who had a child up to 2 years, or between 2 and 5 years, before their breast cancer diagnosis were more likely to die. The unadjusted hazard ratio estimates were 2.75 [95% confidence interval (95% CI), 1.98-3.83; P < 0.001] and 2.20 (95% CI, 1.65-2.94; P < 0.001), respectively, and the adjusted estimates were 2.25 (95% CI, 1.59-3.18; P < 0.001) and 1.82 (95% CI, 1.35-2.46; P < 0.001), respectively. When evaluating the prognosis of women recently diagnosed with breast cancer, the time since last full-term pregnancy should be routinely considered along with other established host and tumor prognostic factors, but consideration of other reproductive factors may not be warranted. (Cancer Epidemiol Biomarkers Prev 2009;18(6):1792–7)

  R. L Milne , J Benitez , H Nevanlinna , T Heikkinen , K Aittomaki , C Blomqvist , J. I Arias , M. P Zamora , B Burwinkel , C. R Bartram , A Meindl , R. K Schmutzler , A Cox , I Brock , G Elliott , M. W. R Reed , M. C Southey , L Smith , A. B Spurdle , J. L Hopper , F. J Couch , J. E Olson , X Wang , Z Fredericksen , P Schurmann , M Bremer , P Hillemanns , T Dork , P Devilee , C. J van Asperen , R. A. E. M Tollenaar , C Seynaeve , P Hall , K Czene , J Liu , Y Li , S Ahmed , A. M Dunning , M Maranian , P. D. P Pharoah , G Chenevix Trench , J Beesley , kConFab Investigators , N. N Antonenkova , I. V Zalutsky , H Anton Culver , A Ziogas , H Brauch , C Justenhoven , Y. D Ko , S Haas , P. A Fasching , R Strick , A. B Ekici , M. W Beckmann , G. G Giles , G Severi , L Baglietto , D. R English , O Fletcher , N Johnson , I dos Santos Silva , J Peto , C Turnbull , S Hines , A Renwick , N Rahman , B. G Nordestgaard , S. E Bojesen , H Flyger , D Kang , K. Y Yoo , D. Y Noh , A Mannermaa , V Kataja , V. M Kosma , M Garcia Closas , S Chanock , J Lissowska , L. A Brinton , J Chang Claude , S Wang Gohrke , C. Y Shen , H. C Wang , J. C Yu , S. T Chen , M Bermisheva , T Nikolaeva , E Khusnutdinova , M. K Humphreys , J Morrison , R Platte , D. F Easton and on behalf of the Breast Cancer Association Consortium
  Background

A recent genome-wide association study identified single-nucleotide polymorphism (SNP) 2q35-rs13387042 as a marker of susceptibility to estrogen receptor (ER)–positive breast cancer. We attempted to confirm this association using the Breast Cancer Association Consortium.

Methods

2q35-rs13387042 SNP was genotyped for 31 510 women with invasive breast cancer, 1101 women with ductal carcinoma in situ, and 35 969 female control subjects from 25 studies. Odds ratios (ORs) were estimated by logistic regression, adjusted for study. Heterogeneity in odds ratios by each of age, ethnicity, and study was assessed by fitting interaction terms. Heterogeneity by each of invasiveness, family history, bilaterality, and hormone receptor status was assessed by subclassifying case patients and applying polytomous logistic regression. All statistical tests were two-sided.

Results

We found strong evidence of association between rs13387042 and breast cancer in white women of European origin (per-allele OR = 1.12, 95% confidence interval [CI] = 1.09 to 1.15; Ptrend = 1.0 x 10–19). The odds ratio was lower than that previously reported (P = .02) and did not vary by age or ethnicity (all P ≥ .2). However, it was higher when the analysis was restricted to case patients who were selected for a strong family history (P = .02). An association was observed for both ER-positive (OR = 1.14, 95% CI = 1.10 to 1.17; P = 10–15) and ER-negative disease (OR = 1.10, 95% CI = 1.04 to 1.15; P = .0003) and both progesterone receptor (PR)–positive (OR = 1.15, 95% CI = 1.11 to 1.19; P = 5 x 10–14) and PR-negative disease (OR = 1.10, 95% CI = 1.06 to 1.15; P = .00002).

Conclusion

The rs13387042 is associated with both ER-positive and ER-negative breast cancer in European women.

 
 
 
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