...BTKi, which was longer (72·5 months, 56·8–79·2) with BTK mutations than without (35·8 months, 16·5–52·0, p 0·0052)...With a median follow up of 30·8 months, 36‐month overall survival (OS) was 72·8% (95% CI, 62·8–80·9) and progression‐free survival (PFS) was 69·6% (95% CI, 58·3–78·9).