Safety and pharmacokinetics of a recombinant fusion protein linking coagulation factor VIIa with albumin in healthy volunteers.
J Thromb Haemost
; 11(11): 1977-85, 2013 Nov.
Article
in En
| MEDLINE
| ID: mdl-24112951
ABSTRACT
BACKGROUND:
Development of neutralizing antibodies remains the most problematic complication in treating congenital hemophilia. Control and prevention of bleeding events in such patients with recombinant factor VIIa (rFVIIa) is limited by the short half-life of the available product. Here, we report on the pharmacokinetics and safety of a novel, recombinant fusion protein linking coagulation FVIIa with albumin (rVIIa-FP) in a first-in-human study in healthy male subjects.METHODS:
Forty healthy male subjects between 18 and 35 years of age were included and dosed in five consecutive cohorts. In each cohort, six subjects were randomized to a single dose of rVIIa-FP (140, 300, 500, 750, or 1000 µg kg(-1) ) and two to placebo. All subjects received anticoagulation with an oral vitamin K antagonist to reach an international normalized ratio between 2 and 3 prior to dosing with rVIIa-FP/placebo. Dosing with oral vitamin K antagonist was continued at a fixed dose for 6 days after injection of rFVIIa. RESULTS ANDCONCLUSIONS:
Tolerance of rVIIa-FP was good at all dose levels. No serious adverse events were observed. None of the subjects developed anti-drug antibodies. The maximum baseline-corrected mean (SD) FVIIa plasma activity increased in a dose-proportional manner. Across the dose range, the median half-life was consistent, ranging from 6.1 to 9.7 h. At the highest dose of 1000 µg kg(-1) , the median FVIIa activity-based half-life was 8.5 h. Clearance ranged from 7.62 to 12.74 mL h(-1) kg(-1) . Compared with the commercially available rFVIIa product, rVIIa-FP had a reduced clearance resulting in an approximately 3- to 4-fold increase in half-life.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Factor VIIa
/
Albumins
Type of study:
Clinical_trials
Limits:
Adolescent
/
Adult
/
Humans
/
Male
Language:
En
Journal:
J Thromb Haemost
Journal subject:
HEMATOLOGIA
Year:
2013
Document type:
Article
Affiliation country:
Alemania