borderline significantP = 0.064
We observed a borderline significant association between histone mutation and OS in univariate analysis ( P = 0.064); compared to H3 wild-type (H3-WT), the outcome was worse in patients with H3.3K27M (hazard ratio = 1.28 (95% CI: 0.81−2.03)) and better in patients with H3.1K27M (hazard ratio = 0.81 (95% CI: 0.46−1.42)).