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Expansion phase: bleed-related endpoints


                                                ABR*         Median        Participants with   Participants with
                                                (95% CI)     ABR           zero bleeds, %     0–3 bleeds, %
                                                             (IQR)         (95% CI)           (95% CI)

               Treated bleeds                   2.4          0.0           56.1               90.2
                                                (1.4–4.3)    (0.0–2.1)     (39.7–71.5)        (76.9–97.3)

               All bleeds                       4.5          2.1           29.3               80.5
                                                (3.1–6.6)    (0.0–5.9)     (16.1–45.5)        (65.1–91.2)

               Treated spontaneous              0.6          0.0           82.9               97.6
               bleeds                           (0.3–1.5)    (0.0–0.0)     (67.9–92.8)        (87.1–99.9)

               Treated joint bleeds             1.7          0.0           70.7               95.1
                                                (0.8–3.7)    (0.0–1.9)     (54.5–83.9)        (83.5–99.4)
               Treated target joint             1.0          0.0           85.4               97.6
               bleeds                           (0.3–3.3)    (0.0–0.0)     (70.8–94.4)        (87.1–99.1)


            *based on a negative binomial-regression model
            Data cut-off: 15 December 2017
            ABR, annualized bleed rate; BTB, breakthrough bleeds; CI, confidence interval; IQR, interquartile range

            Expansion phase: PK profiles

            Clinically efficacious concentrations were obtained with all three dosing regimens (consistent
            with PK model predictions). For Q4W, emicizumab mean trough concentrations were
            maintained at ~41 µg/mL from Week 13 to Week 25.


                    80




                Mean (95% CI) Emicizumab  concentration (µg/mL)  40
                    60











                                                                                          QW (HAVEN 1,2,3)
                    20
                                                                                          Q2W (HAVEN 3)
                                                                                          Q4W (HAVEN 4)


                     0
                       0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86
                                                          Time (weeks)

            POOLED DATA FROM FOUR HAVEN STUDIES (Callaghan M et al. 2019)





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