Clin Cancer Res:乳腺导管原位癌术前局部应用他莫昔芬凝胶同样有效

2014-07-28 MedSci MedSci原创

Clinical Cancer Research 7月15日在线发表的一项小型phase 2研究显示,与口服他莫昔芬相比,局部使用4-羟基他莫昔芬(4-OHT,他莫昔芬的抗雌激素代谢产物)凝胶制剂在乳腺导管原位癌(DCIS)术前应用,与口服他莫西芬同样有效,支持对这一局部外用治疗进行进一步研究(Clin. Cancer Res. 2014;20:3672-82)。这是一项随机、双盲、

Clinical Cancer Research 7月15日在线发表的一项小型phase 2研究显示,与口服他莫昔芬相比,局部使用4-羟基他莫昔芬(4-OHT,他莫昔芬的抗雌激素代谢产物)凝胶制剂在乳腺导管原位癌(DCIS)术前应用,与口服他莫西芬同样有效,支持对这一局部外用治疗进行进一步研究(Clin. Cancer Res. 2014;20:3672-82)。

这是一项随机、双盲、II期临床研究,由芝加哥西北大学Robert H. Lurie癌症中心的Oukseub Lee医生及其同事进行,入选26例绝经前和绝经后雌激素受体阳性DCIS女性患者,14例接受口服他莫昔芬治疗(20 mg/d),12例接受局部4-OHT凝胶制剂治疗(4 mg/d)。这些女性在诊断性核芯针活检后至手术切除前接受为期6周(中位数)治疗。结果显示,研究者对核芯针活检和手术切除的组织进行比较发现,两组患者乳腺组织中的癌细胞生长标志物(Ki-67)的降幅相似。两组患者乳腺中的4- OHT平均浓度也相似,但口服他莫昔芬组的平均血浆4-OHT浓度约为局部治疗组的5倍(1.1 ng/mL vs. 0.2 ng/mL)。在口服他莫昔芬组患者中检测到凝血相关蛋白增加,但在局部治疗组未观察到这一现象。两组的潮热发生率无差异。

另一名研究者——Lurie癌症中心乳腺癌项目联合主任Seema Khan医生表示,如果4-OHT凝胶制剂在样本量更大的研究中被证明有效,则可能代替口服他莫昔芬用于乳腺癌预防和DCIS,并促使更多的女性使用该凝胶制剂。该凝胶制剂可最大程度上减少身体其他地方暴露于药物,使药物集中于所需治疗的乳房上,这应可避免潜在血凝块的产生和子宫癌风险增加。

原始出处:
Lee O, Page K, Ivancic D, Helenowski I, Parini V, Sullivan ME, Margenthaler JA, Chatterton RT Jr, Jovanovic B, Dunn BK, Heckman-Stoddard BM, Foster K, Muzzio M, Shklovskaya J, Skripkauskas S, Kulesza P, Green D, Hansen NM, Bethke KP, Jeruss JS, Bergan R, Khan SA.A Randomized Phase II Presurgical Trial of Transdermal 4-Hydroxytamoxifen Gel versus Oral Tamoxifen in Women with Ductal Carcinoma In Situ of the Breast.Clin Cancer Res. 2014 Jul 15;20(14):3672-82.

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    2014-07-30 chg122
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    2014-07-30 lishizhe
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