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- W2092250810 abstract "Amenorrhoea is a common side-effect to chemotherapy of premenopausal women. We examine the association between chemotherapy-induced leucopaenia and the development of amenorrhoea in premenopausal women with breast cancer.In a multi-centre, randomised, controlled study, 1016 premenopausal women received seven series of FEC (F: fluorouracil, E: epirubicin and C: cyclophosphamide) for early stage breast cancer. In the first series, all patients received standard dose (F: 600 mg/m(2), E: 60 mg/m(2) and C: 600 mg/m(2)). Patients with leukocyte nadir 1.0-1.9 x 10(9)/l continued with standard dose for the remaining six series (STANDARD(REGISTERED), n=279). Patients with leukocyte nadir > or =2 x 10(9)/l were randomised to standard (STANDARD(RANDOMISED), n=373) or increased (TAILORED, n=364) dose of E and C. After each series, leukocyte nadir was evaluated. Absent bleeding after the 5th-7th series of FEC was interpreted as amenorrhoea.The risk of amenorrhoea increased with age. In age-stratified analysis of the STANDARD groups (equal dose, different initial leukocyte nadir) low leukocyte nadir was associated with amenorrhoea for patients in the age-group 25-39 years (P=0.010). In age-stratified analysis in the randomised groups (different doses, same initial leukocyte nadir) a dose related increased risk of amenorrhoea was found for age-groups 25-39 (RR: 1.15, 95% confidence interval (CI): 1.06-1.24) and 40-44 years (RR:1.21, 95% CI: 1.001-1.47).Age is the most important risk factor of amenorrhoea after FEC chemotherapy. However, for younger patients, lower leukocyte nadir in response to STANDARD FEC treatment or increased doses of C and E were associated with increased risk of amenorrhoea." @default.
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- W2092250810 date "2009-12-01" @default.
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- W2092250810 title "The risk of amenorrhoea after adjuvant chemotherapy for early stage breast cancer is related to inter-individual variations in chemotherapy-induced leukocyte nadir in young patients: Data from the randomised SBG 2000-1 study" @default.
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- W2092250810 doi "https://doi.org/10.1016/j.ejca.2009.09.019" @default.
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