Evidence map›Paper›PMID 33772963›Full record

Trial reportHaemophilia : the official journal of the World Federation of Hemophilia2021

Results of a randomized phase III/IV trial comparing intermittent bolus versus continuous infusion of antihaemophilic factor (recombinant) in adults with severe or moderately severe haemophilia A undergoing major orthopaedic surgery.

Ingrid Pabinger, Vasily Mamonov, Jerzy Windyga, Werner Engl, Jennifer Doralt, Srilatha Tangada, Gerald Spotts, Bruce Ewenstein

Registry-linked trialOpen access · hybridAbstract readClinical Trial, Phase IIIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Haemophilia : the official journal of the World Federation of Hemophilia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00357656 (Antihemophilic Factor), which is not on this map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.7field-weighted citation impact, top 30% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT00357656 phase4completednot on this map

Antihemophilic Factor (Recombinant) Plasma/Albumin-Free Method (rAHF PFM): A Phase 3/4, Prospective, Controlled, Randomized, Multi-Center Study to Compare the Efficacy and Safety of Continuous Infusion (CI) Versus Intermittent Bolus Infusion (BI) in Subjects With Severe or Moderately Severe Hemophilia A Undergoing Major Orthopedic Surgery

TypeinterventionalSponsorBaxalta now part of ShireRan2006 to 2015Enrolled85ConditionsHemophilia AArmsRecombinant Protein-Free Factor VIII (rAHF-PFM)
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Article
  3. How do we optimally utilize factor concentrates in persons with hemophilia?Hematology. American Society of Hematology. Education Program · 2021
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 4 countries.

Ingrid PabingerMedical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0002-7677-9896
Vasily MamonovNational Research Center for Hematology, Moscow, Russia.
Jerzy WindygaDepartment of Disorders of Hemostasis and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland.ORCID https://orcid.org/0000-0001-7877-4784
Werner EnglBaxalta Innovations GmbH, a Takeda company, Vienna, Austria.
Jennifer DoraltBaxalta Innovations GmbH, a Takeda company, Vienna, Austria.
Srilatha TangadaBaxalta US Inc., a Takeda company, Cambridge, Massachusetts, USA.
Gerald SpottsBaxalta US Inc., a Takeda company, Cambridge, Massachusetts, USA.
Bruce EwensteinBaxalta US Inc., a Takeda company, Cambridge, Massachusetts, USA.
Baxalta (United States) · USTakeda (Austria) · ATInstytut Hematologii i Transfuzjologi · PLMedical University of Vienna · ATNational Medical Research Center for Hematology · RU

Funding

Baxalta Innovations GmbH, a Takeda company, Vienna, AustriaBaxalta US Inc., a Takeda company, Lexington, MA, USA
6 · The paper itself

Abstract

introductionIn patients with haemophilia A undergoing surgery, factor VIII (FVIII) replacement therapy by continuous infusion (CI) may offer an alternative to bolus infusion (BI).

aimTo compare the perioperative haemostatic efficacy and safety of antihaemophilic factor (recombinant) (ADVATE

methodsIn this multicentre, phase III/IV, controlled study (NCT00357656), 60 previously treated adult patients with severe or moderately severe disease undergoing elective unilateral major orthopaedic surgery (knee replacement, n = 48; hip surgery, n = 4; other, n = 8) requiring drain placement were randomized to receive antihaemophilic factor (recombinant) CI (n = 29) or BI (n = 31) through postoperative day 7. Primary outcome measure was cumulative packed red blood cell (PRBC)/blood volume in the drainage fluid within 24 h after surgery, used to establish non-inferiority of CI to BI.

resultsCI:BI ratio of cumulative PRBC volume in the 24-h drainage fluid was 0.92 (p-value <.001 for non-inferiority; 95% confidence interval, 0.82-1.05). Total antihaemophilic factor (recombinant) dose per kg body weight received in the combined trans- and postoperative periods was similar with CI and BI to maintain targeted FVIII levels during/after surgery. Treatment-related adverse events (AEs) were reported in five patients treated by CI (eight events) and five treated by BI (six events), including two serious AEs in each arm.

conclusionCI administration of antihaemophilic factor (recombinant) is a viable alternative to BI in patients with haemophilia A undergoing major orthopaedic surgery, providing comparable efficacy and safety.

Indexed as

Hemophilia AOrthopedic ProceduresAdultBlood Coagulation TestsFactor VIIIHemostasisHumansRecombinant ProteinsFactor VIIIRecombinant Proteinsclinical trialhaemophilia Aintravenous infusionorthopaedic surgeryrecombinant factor VIII

Identifiers

PMID33772963
PMCPMC8252548
OpenAlexW3152175699

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.