Allelic loss at 19q12 and Xq11-12 predict an adverse clinical outcome in patients with mucinous ovarian tumours of low malignant potential.

Allelic loss at 19q12 and Xq11-12 predict an adverse clinical outcome in patients with mucinous ovarian tumours of low malignant potential.
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19q12和XQ11-12的等位基因损失预测具有低恶性潜力的粘液性卵巢肿瘤患者的不良临床结果。

DOI:
10.1038/sj.bjc.6601681
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发表时间:
2004-03-22
影响因子:
8.8
通讯作者:
--
中科院分区:
医学1区
文献类型:
--
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卵巢低度恶性潜能肿瘤(LMP)介于腺瘤和卵巢癌之间。这些肿瘤通常比卵巢癌具有更好的预后。然而,这些肿瘤的一部分可能会进展并变得致命。为了寻找敏感的诊断工具来监测手术后患者的情况,我们使用 91 个多态性微卫星标记(平均间隔为 50cM)对 41 个粘液性 LMP 进行全基因组杂合性丢失 (LOH) 扫描,扫描所有人类染色体和据报道与卵巢癌相关的 25 个 LOH 标记。此外,我们评估了临床病理参数、微血管密度、Ki-67标记指数、细胞凋亡指数或p53过表达是否有助于预测LMP患者的术后结果。在检查的 116 个标记物中,19q12 和 Xq11-12 显示术后无进展生存时间和 LOH 状态之间存在显着相关性(P<0.05)。 Ki-67标记指数高的患者的无进展生存时间显着低于水平较低的患者(P=0.042)。其他临床病理因素和免疫组化分析与该系列患者的无进展生存时间没有相关性。当使用 Cox 回归分析评估 19q12 和/或 Xq11-12 处的 LOH 组合时,在这些位置显示 LOH 的肿瘤患者进展风险最大 (P=0.0073)。这些发现表明,即使无法确定第二原发肿瘤或复发之间的区别,在前粘液性 LMP 位点的 19q12 和/或 Xq11-12 处识别出 LOH 应提醒临床医生体腔上皮中存在潜在的侵​​袭性病变。
Ovarian tumours of low malignant potential (LMP) are intermediate between adenomas and ovarian carcinomas. These tumours are often associated with a significantly better prognosis than ovarian carcinomas. However, a subset of these tumours can progress and become lethal. In order to seek sensitive diagnostic tools for monitoring patients after surgical operation, we performed a genome-wide scan for loss of heterozygosity (LOH) in 41 mucinous LMPs using 91 polymorphic microsatellite markers at an average interval of 50 cM across all of the human chromosomes and 25 LOH markers reportedly associated with ovarian carcinoma. In addition, we assessed whether clinicopathological parameters, microvessel density, Ki-67 labeling index, apoptotic index or p53 overexpression would be useful for predicting the postoperative outcome of LMP patients. Of the 116 markers examined, 19q12 and Xq11–12 showed significant correlation between postoperative progression-free survival time and LOH status (P<0.05). Patients with a high Ki-67 labeling index had a significantly poorer progression-free survival time than those with lower levels (P=0.042). Other clinicopathological factors and immunohistochemical analysis had no correlation with progression-free survival time in this series of patients. When the combination of LOH at 19q12 and/or Xq11–12 was assessed using Cox's regression analysis, patients with tumours that showed LOH at these positions were at greatest risk of progression (P=0.0073). These findings suggest that the identification of LOH at 19q12 and/or Xq11–12 in former mucinous LMP sites should alert the clinician to the presence of a potentially aggressive lesion in the coelomic epithelium, even if a distinction between second primary tumours or recurrence could not be determined.
DOI: 10.3109/07357909909021423
发表时间: 1999-01-01
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