a nonsignificant trendP = 0.078
Furthermore, analysis of hematopoietic phylogenies revealed a nonsignificant trend towards longer telomeres in the sole U2AF1 -Q157R mutant clade in our cohort ( P = 0.078; Fig. 3b ), with the difference in telomere lengths closely approaching statistical significance ( P = 0.053) when this clade was compared to ancestrally related colonies, despite rapid recent clonal expansion after U2AF1 -Q157R acquisition (Supplementary Note 1 and Extended Data Fig. 5 ).