IMPROVED BLEED PROTECTION
AND REDUCED TREATMENT BURDEN
vs prior SHL FIX11
A real-world study across the UK, Denmark and Germany up to 24 months investigated
patients switching from SHL FIX* to ALPROLIX prophylaxis (N=30), reported:11
Reduced ABR11
ABR improved numerically with ALPROLIX vs pre-switch FIX11
Pre- vs post-switch mean ABR (N=30)11

Reduced injection frequency11
One less injection per week
after switching (n=24)11
Before switch: 2.0 injections/week
After switch: 1.0 injection/week
p-values not reported
Reduced factor consumption11
Average factor consumption numerically reduced by 27.7 IU/kg/week
post-switch to ALPROLIX from SHL FIX prophylaxis11
Pre- and post-switch mean weekly factor consumption (n=24)11

No safety data were collected.
IMPROVED BLEED PROTECTION AND REDUCED TREATMENT BURDEN
vs prior SHL FIX11
A real-world study across the UK, Denmark and Germany up to 24 months investigated
patients switching from SHL FIX* to ALPROLIX prophylaxis (N=30), reported:11
Reduced ABR11
ABR improved numerically with ALPROLIX vs pre-switch FIX11
Pre- vs post-switch mean ABR (N=30)11

Reduced injection frequency11
One less injection per week
after switching (n=24)11
Before switch: 2.0 injections/week
After switch: 1.0 injection/week
p-values not reported
Reduced factor consumption11
Average factor consumption numerically reduced by 27.7 IU/kg/week
post-switch to ALPROLIX from SHL FIX prophylaxis11
Pre- and post-switch mean weekly factor consumption (n=24)11

*On-demand and prophylaxis.11 †Mean change between pre- and post-switch factor consumption.11
ABR, annualised bleeding rate; FIX, factor IX; IU, international unit; IQR, interquartile range; SD, standard deviation; SHL, standard half-life.
Numerical increase in proportion of patients with zero bleeds11
Among patients previously treated with SHL FIX prophylaxis (n=24):11
2.4×
more patients had zero bleeds
during 18–24 months
after switching to ALPROLIX
prophylaxis (p-value not reported)
Before switch: 21.7% (5/23)
After switch: 52.9% (9/17)
FIX, factor IX; SHL, standard half-life.
Retrospective, multicentre, chart review evaluating adult and paediatric medical records11
Data obtained from centres in Denmark (n=9), Germany (n=9) and the UK (n=12)11

FIX, factor IX; SHL, standard half-life.
No safety data were collected.