REDUCTION IN BLEEDS FOLLOWING
SWITCH FROM FIX ON-DEMAND11
A retrospective chart review across six haemophilia treatment centres in
the US for patients with haemophilia B switching from previous FIX
on-demand treatment to ALPROLIX prophylaxis reported:11
Numerical decrease in bleed rates11
Switching to ALPROLIX prophylaxis numerically reduced median bleed
rates vs pre-switch FIX on-demand11
Median bleed rates pre- and post-switch (n=10)*11
Target joint outcomes11
At the end of the chart review period,
32% (17/53)
of target joints
had resolved11
Overall, 47% (n=9/19) of patients
did not report a target joint11
66% (n=19/29) of patients receiving FIX on-demand
prior to initiating ALPROLIX had switched to ALPROLIX prophylaxis at
the end of the chart review period11
• Median (range) follow-up for all patients receiving ALPROLIX
was 2.7 (0.5–5.0) years
*Included patients who had available ABR data pre- and post-switch to ALPROLIX prophylaxis.11
ABR, annualised bleeding rate; AjBR, annualised joint bleeding rate; AsBR, annualised spontaneous bleeding rate; FIX, factor IX; IQR, interquartile range; OD, on-demand.
KEY SAFETY OUTCOMES11
Specific adverse events that were collected and recorded during ALPROLIX
therapy included hypersensitivity (including anaphylaxis), nephrotic syndrome
and
thrombosis/thromboembolism. Other adverse events were not collected in this
review11
Reported safety outcome:
One patient experienced an AE of hypersensitivity,
which was not
associated with inhibitor development11
AE, adverse event; FIX, factor IX.
REDUCTION IN BLEEDS FOLLOWING
SWITCH FROM FIX ON-DEMAND11
A multicentre, retrospective chart review was conducted across patients
with
haemophilia B who had received ALPROLIX prophylaxis or
on-demand
treatment for ≥6 months across six sites in the US:*11
N=64 eligible patients
Severity of haemophilia B:
- Mild (n=9)
- Moderate
(n=17)
- Severe (n=38)
Pre-switch regimen:
- On-demand (n=29)
- Prophylaxis (n=34)
- Missing data (n=1)
Endpoints included
changes in the FIX therapy
dosing
interval, factor
consumption, ABR (including
overall, spontaneous and
joint), adherance pre- and post-switch, reason
for switching and
target
joint outcomes
*The primary objective was to understand the clinical characteristics and outcomes resulting from the real-world management of patients with haemophilia B being treated with ALPROLIX. The study period for retrospective data collection was 12 months prior to ALPROLIX initiation until the date of site initiation.11
ABR, annualised bleeding rate; FIX, factor IX.