Andexanet-Alfa
Deep-Dive: Predictors of Hematoma Expansion and Response to Andexanet — ANNEXA-I Secondary Analyses
ANNEXA-I secondary analyses: andexanet benefit amplifies in highest-risk HE quartiles (NNT ~4) without amplifying thrombotic-event risk; authors propose an 11-to-1 rule.
Deep-Dive: ANNEXA-I Biomarker Substudy — Andexanet's Therapeutic Window Is 1 Hour, and It Cuts Both Ways
ANNEXA-I biomarker substudy: 1-hour reduction in anti-FXa (OR 0.69/100 ng/mL) and rise in ETP (OR 0.94/100 nmol/L-min) both predict fewer hematoma expansions; the ETP rise also independently predicts more thrombotic events (OR 1.08).