J 2021

A Practical, One-Clinic Visit Protocol for Pharmacokinetic Profile Generation with the ADVATE myPKFiT Dosing Tool in Severe Hemophilia A Subjects

BLANCHETTE, V. S.; L. ZUNINO; V. GRASSMANN; C. BARNES; M. D. CARCAO et al.

Basic information

Original name

A Practical, One-Clinic Visit Protocol for Pharmacokinetic Profile Generation with the ADVATE myPKFiT Dosing Tool in Severe Hemophilia A Subjects

Authors

BLANCHETTE, V. S.; L. ZUNINO; V. GRASSMANN; C. BARNES; M. D. CARCAO; J. CURTIN; S. JACKSON; L. KHOO; Vladimir KOMRSKA; D. LILLICRAP; M. MORFINI; Gabriela ROMANOVÁ; D. STEPHENS; Ester ZAPOTOCKA; M. L. RAND and Jan BLATNÝ

Edition

THROMBOSIS AND HAEMOSTASIS, STUTTGART, GEORG THIEME VERLAG KG, 2021, 0340-6245

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

30205 Hematology

Country of publisher

Germany

Confidentiality degree

is not subject to a state or trade secret

References:

Impact factor

Impact factor: 6.830

Marked to be transferred to RIV

Yes

RIV identification code

RIV/00216224:14110/21:00121731

Organization unit

Faculty of Medicine

EID Scopus

Keywords in English

factor VIII; hemophilia A; pharmacokinetic; observational study; population PK

Tags

International impact, Reviewed
Changed: 25/2/2022 10:56, Mgr. Tereza Miškechová

Abstract

In the original language

Standard pharmacokinetic (PK) assessments are demanding for persons with hemophilia A, requiring a 72-hour washout and 5 to 11 timed blood samples. A no-washout, single-clinic visit, sparse sampling population PK (PPK) protocol is an attractive alternative. Here, we compared PK parameters obtained with a traditional washout, 6-sampling time point PPK protocol with a no-washout, single-clinic visit, reverse 2-sampling time point PPK protocol in persons with severe hemophilia A (SHA) receiving ADVATE. A total of 39 inhibitor-negative males with SHA (factor VIII activity [FVIII:C]<2%) were enrolled in a prospective sequential design PK study. Participants completed a washout, 6-sampling time point PPK protocol as well as a no-washout, reverse 2-sampling time point protocol, with samples taken during a single 3-hour clinic visit 24hours post home infusion of FVIII and then 3hours post infusion in clinic. FVIII:C levels were analyzed by one-stage and chromogenic assays; blood group and von Willebrand factor antigen (VWF:Ag) were determined; and PK parameters were analyzed using the ADVATE myPKFiT dosing tool. There was moderate to almost perfect agreement for the PK parameters obtained with the 2- and the 6- point PPK protocols using a one-stage FVIII:C assay and a substantial to almost perfect agreement using a chromogenic FVIII:C assay. Significant associations between specific PK parameters and blood group and VWF:Ag were observed. The no-washout, single-clinic visit, reverse 2-sampling time point PPK protocol can be used in the routine clinical setting since it demonstrates sufficient accuracy compared with the more demanding and less practical washout, 6-sampling time point PPK protocol in persons with SHA receiving ADVATE.