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- W7806354 abstract "553 Background: The goal of this study was to assess the effect of pregnancy on the subsequent risk of recurrences after treatment for breast carcinoma, adjusted on established prognostic factors Methods: Between 1990 and 1999, 908 patients aged under 35 years old were treated for a non metastatic and unilateral invasive breast carcinoma in eight french hospitals, members of the GETNA association. The median follow-up period was 87 months. Mean age was 31.4 years old. Estrogen receptor (ER) status, lymph node involvement, tumor size, histological grade and pregnancy were evaluated as potential risk factors for recurrence and death in a multivariate analysis. A modified model was constructed using the four independent variables derived from the previous multivariate Cox model and the annual risk of death and recurrences were studied. Results: Women who gave birth within one year prior to diagnosis (n=105, 11, 8%) were more likely to have axillary node positive (> N1:48%, vs 35%, p=0.009) important tumor size (>T2:75% vs 55%, p=0.0002), and ER negative (54%, vs 42%, p=0.031). In univariate analysis, pregnancy the year before carcinoma diagnosis increased the risk of death, HR=1.5 [1.05–2.20] (p=0.028) and local recurrence, HR=1.71 [1.06–2.76] (p=0.027). In multivariate analysis, only influence on local recurrence is confirmed, HR=1.75 [1.08–2.84] (p=0.006). Patients who experienced a pregnancy after diagnosis and treatment (n=118, 13.4%) did not tend to have better prognosis regarding axillary node positive (> N1:71%, vs 61%, p=0.051), tumour size (> T2:53.4% vs 59.2%, p=0.49), ER negative (ER:44.2% vs 43.6%, p=0.92) and were significantly younger (<30 years old 52.5% vs 28%, p<10 −4 ). The overall survival after five years was 97% for women who experienced a pregnancy and only 80% for those who did not (p< 0.0001). Conclusions: In this large study population, pregnancy was not associated with poorer survival and the healthy mother effect was studied. For the purpose of advising women on the decision to go forward with pregnancy, was studied after the diagnosis and treatment of breast carcinoma, the annual risk of recurrences. Study granted by Sanofi-Aventis. Acknoledgements to OSMO for its operational support. No significant financial relationships to disclose." @default.
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- W7806354 date "2006-06-20" @default.
- W7806354 modified "2023-10-18" @default.
- W7806354 title "Effect of pregnancy, in the year prior and after treatment for breast carcinoma, on survival and recurrence in women with breast cancer younger than 35 years. GETNA GROUP" @default.
- W7806354 doi "https://doi.org/10.1200/jco.2006.24.18_suppl.553" @default.
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