XIST expression and BRCA1 mutations and methylation.

*, sample size is different in each analysis†, statistically significant‡, P-value of fisher’s exact test to compare frequency of BRCA1 germline mutations in cluster 4 (33.3%) with other clusters (5.9%)XIST expression and BRCA1 mutations and methylation.* 各分析的样本量各不相同†，结果具有统计学显著性‡；用于比较第4聚类簇（33.3%）与其他聚类簇（5.9%）中BRCA1生殖系突变（BRCA1 germline mutations）频率的费希尔精确检验（Fisher’s exact test）的P值（P-value），涉及XIST基因表达、BRCA1突变及甲基化分析。