Age of menopause among women who remain premenopausal following treatment for early breast cancer: Long-term results from International Breast Cancer Study Group Trials V and VI
Age of menopause among women who remain premenopausal following treatment for early breast cancer: Long-term results from International Breast Cancer Study Group Trials V and VI
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DOI:
10.1016/j.ejca.2007.04.006
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发表时间:
2007-07-01
影响因子:
8.4
通讯作者:
Winer, Eric
中科院分区:
文献类型:
--
作者:
Partridge, Ann;Gelber, Shari;Winer, Eric
Background: The likelihood of Premature menopause has not been thoroughly explored in women who remain premenopausal after adjuvant chemotherapy for breast cancer. Methods: We used data from the International Breast Cancer Study Group (IBCSG) Trials V and VI. Trial V enrolled 1407 eligible premenopausal women randomised to no systemic therapy (No CT) or 1 cycle of perioperative CMF-based chemotherapy (PeCT) if node negative, and 6 cycles of CMF-based chemotherapy postoperatively (CMF x 6) or 1 cycle perioperative CMF-based chemotherapy plus CMF x 6 postoperatively (CMF x 7) if node positive. From Trial VI (a 2 x 2 factorial designed study of 3 versus 6 initial cycles of CMF and a reintroduction of three additional courses of CMF), we included 375 women randomised to receive only six initial cycles of CMF (CMF x 6). Findings: We excluded women who reported no menses during 12-24 months after randomisation (N = 934), hysterectomy (N = 16) or bilateral oophorectomy (N = 8), or missing menses data (N = 57), creating a cohort of 767 women; 540 women had been randomised to PeCT or no CT, 227 randomised to CMF x 6 or 7. A Cox proportional hazards model revealed that CMF x 6 or 7 (HR = 2.03, p < 0.0001) and temporary amenorrhea (HR = 1.96, p < 0.0001) were associated with Premature menopause. Interpretation: Women who remain premenopausal after 6 or 7 cycles of CMF-based chemotherapy have a higher likelihood of going through menopause at an earlier age than women who received little or no chemotherapy Temporary cessation of menses appears to be a marker for earlier onset of menopause. These findings may assist women and clinicians when making treatment and reproductive decisions after a diagnosis of breast cancer. (c) 2007 Elsevier Ltd. All rights reserved.