Progesterone receptor expression is an independent prognostic variable in early breast cancer: a population-based study.

Progesterone receptor expression is an independent prognostic variable in early breast cancer: a population-based study.
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DOI:
10.1038/bjc.2013.756
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发表时间:
2014-02-04
影响因子:
8.8
通讯作者:
Thompson, A. M.
Thompson, A. M.
中科院分区:
医学1区
文献类型:
--
作者:
Purdie, C. A.;Quinlan, P.;Jordan, L. B.;Ashfield, A.;Ogston, S.;Dewar, J. A.;Thompson, A. M.

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早期浸润性乳腺癌中黄体酮受体(PR)表达的评估仍存在争议。这项研究试图重新评估 PR 表达作为早期乳腺癌潜在治疗指南的作用。特别是在雌激素受体(ER)阳性、淋巴结(LN)阴性疾病中。一个由 1074 名患者组成的人群队列在 4 年(2000-2004 年)内就诊于单一癌症中心,接受了原发性浸润性乳腺癌手术以达到治愈目的。前瞻性数据收集包括患者人口统计学、病理学、ER 和 PR 表达、HER2 状态、辅助化疗和内分泌治疗。将孕酮受体表达与(所有原因)总生存期 (OS)、乳腺癌特异性生存期 (BCSS) 和无病生存期 (DFS) 进行比较。中位随访时间为 8.34 年,总生存率为 71.0%,BCSS 为 83.0%。 PR 表达缺失与 OS、BCSS 和 DFS 的较差预后显着相关(P<0.0001,对数秩),即使在 ER 阳性、LN 阴性组中也是如此(BCSS 的风险比为 3.17,95% CI 1.43–7.01),并且不受内分泌治疗的影响。 Cox 回归分析表明 PR 表达是一个独立的预后变量。即使在接受内分泌治疗的 ER 阳性、LN 阴性患者中,PR 表达的缺失也是可手术原发性乳腺癌的一个强大的独立预后变量。 PR 表达缺失应作为 ER 阳性乳腺癌预后不良的生物标志物进行重新评估,此类患者应考虑进行额外的全身治疗。
Progesterone receptor (PR) expression assessment in early invasive breast cancer remains controversial. This study sought to re-evaluate PR expression as a potential therapeutic guide in early breast cancer; particularly in oestrogen receptor (ER)-positive, lymph node (LN)-negative disease. A population cohort of 1074 patients presenting to a single Cancer Centre over 4 years (2000–2004) underwent surgery for primary invasive breast cancer with curative intent. Prospective data collection included patient demographics, pathology, ER and PR expression, HER2 status, adjuvant chemotherapy and endocrine therapy. Progesterone receptor expression was compared with (all causes) overall survival (OS), breast cancer-specific survival (BCSS) and disease-free survival (DFS). Overall survival was 71.0% and BCSS was 83.0% at median follow-up of 8.34 years. Absent PR expression was significantly associated with poorer prognosis for OS, BCSS and DFS (P<0.0001, log-rank), even within the ER-positive, LN-negative group (hazard ratio for BCSS 3.17, 95% CI 1.43–7.01) and was not influenced by endocrine therapy. Cox's regression analysis demonstrated that PR expression was an independent prognostic variable. Absence of PR expression is a powerful, independent prognostic variable in operable, primary breast cancer even in ER-positive, LN-negative patients receiving endocrine therapy. Absence of PR expression should be re-evaluated as a biomarker for poor prognosis in ER-positive breast cancer and such patients considered for additional systemic therapy.
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