正常化加权组合得分重新评估胃癌的TNM分期:基于多中心数据库的回顾性队列研究
Junpeng Wu1, Hao Wang, Xin Yin
1Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin, People's Republic of China.
International journal of surgery (London, England)
|November 24, 2023
概括
一个新的加权TN (wTN) 阶段模型通过对瘤入侵 (pT) 和淋巴结转移 (pN) 阶段赋予差异重量来改善胃癌预后. 这种wTN模型在传统的TNM分期系统上表现出卓越的准确性.
科学领域:
- 在瘤学瘤学.
- 癌症的分期 癌症的分期
- 预测生物标志物 预测生物标志物
背景情况:
- 病理性瘤入侵 (pT) 和淋巴结转移 (pN) 是胃癌 (GC) 的关键预后因素.
- 准确的分期对于预测患者的结果和指导GC治疗决策至关重要.
- 现有的分期系统可能无法完全捕捉T和N组件的不同预后影响.
研究的目的:
- 开发和验证胃癌的新型加权TN (wTN) 阶段模型.
- 为了提高预后准确度,确定 pT 和 pN 阶段之间的最佳重量比.
- 将wTN模型的预后性能与传统的TNM分期系统进行比较.
主要方法:
- 使用培训和验证队列 (SEER数据库).
- 采用LASSO和Cox回归来进行特征选择,确定年龄,瘤大小,转移性淋巴结和瘤位置作为独立的预后因素.
- 开发了使用多变量线性回归和集群分析计算T和N阶段权重的wTN模型,随后使用C指数,概率比率,沃尔德和Score测试进行预后评估,并使用ROC,DCA和RCS分析构建名录.
主要成果:
- 淋巴结转移 (N) 阶段在训练 (0.625对0.375) 和验证 (0.556对0.444) 队列中都比瘤入侵 (T) 阶段重量更高.
- 与第八版TNM相比,wTN分期模型在两个队列中的多个统计测试中表现出更好的预后性能.
- 分层分析证实了WTN模型在胃癌不同病理亚型中增强的预后能力.
结论:
- 新型加权TN (wTN) 阶段模型为胃癌患者提供了显著的预后价值.
- wTN模型的提高准确性在各种病理亚型中是一致的,这表明它具有广泛的适用性.
- 这种加权方法提炼了GC分期,可能导致更个性化的治疗策略.
相关概念视频
Weighted Mean
5.2K
While taking the arithmetic, geometric, or harmonic mean of a sample data set, equal importance is assigned to all the data points. However, all the values may not always be equally important in some data sets. An intrinsic bias might make it more important to give more weightage to specific values over others.
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
5.2K
z Scores and Area Under the Curve
10.9K
z scores are the standardized values obtained after converting a normal distribution into a standard normal distribution. A z score is measured in units of the standard deviation. The z score tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a z score of...
10.9K


