Evidence map›Paper›PMID 33150384›Full record

Trial reportBlood2021

Rurioctocog alfa pegol PK-guided prophylaxis in hemophilia A: results from the phase 3 PROPEL study.

Robert Klamroth, Jerzy Windyga, Vlad Radulescu, Peter W Collins, Oleksandra Stasyshyn, Hishamshah Mohd Ibrahim, Werner Engl, Srilatha D Tangada, William Savage, Bruce Ewenstein

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

Trial report in Blood, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02585960 (Phase 3, Prospective, Randomized, Multi-center Clinical Study Comparing the Safety and Efficacy of BAX 855 Following PK-guided Prophylaxis Targeting Two Different FVIII Trough Levels in Subjects With Severe Hemophilia A), which is not on this map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 pooled it
5.4field-weighted citation impact, top 3% 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.

NCT02585960 phase3completednot on this map

Phase 3, Prospective, Randomized, Multi-center Clinical Study Comparing the Safety and Efficacy of BAX 855 Following PK-guided Prophylaxis Targeting Two Different FVIII Trough Levels in Subjects With Severe Hemophilia A

TypeinterventionalSponsorBaxalta now part of ShireRan2015 to 2018Enrolled135ConditionsHemophilia AArmsPEGylated Recombinant Factor VIII
3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 74 citations in OpenAlex.

  1. Pooled it
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  3. Pooled it
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  7. Extended Half-Life Factor Concentrates in Haemophilia Treatment.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026
    Review
  8. Article
  9. Article
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  16. Normalization in hemophilia: conceptual foundations and clinical implications.Research and practice in thrombosis and haemostasis · 2025
    Review
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  18. Review
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  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 7 institutions in 6 countries.

Robert KlamrothDepartment for Internal Medicine, Vascular Medicine and Haemostaseology, Vivantes Klinikum Friedrichshain, Berlin, Germany.
Jerzy WindygaDepartment of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland.
Vlad RadulescuHemophilia Treatment Center, University of Kentucky, Lexington, KY.
Peter W CollinsInstitute of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom.
Oleksandra StasyshynAcademy of Medical Sciences of Ukraine, Lviv, Ukraine.
Hishamshah Mohd IbrahimPediatric Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia.
Werner EnglBaxalta Innovations GmbH, a Takeda company, Vienna, Austria; and.
Srilatha D TangadaBaxalta US Inc, a Takeda company, Cambridge, MA.
William SavageBaxalta US Inc, a Takeda company, Cambridge, MA.
Bruce EwensteinBaxalta US Inc, a Takeda company, Cambridge, MA.
Baxalta (United States) · USCardiff University · GBHospital Kuala Lumpur · MYInstytut Hematologii i Transfuzjologi · PLKlinikum im Friedrichshain · DETakeda (Austria) · ATUniversity of Kentucky · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rurioctocog alfa pegol prophylaxis targeting factor VIII (FVIII) troughs ≥1% has shown to be efficacious with an acceptable safety profile in people with hemophilia A (PwHA). The PROPEL trial compared safety and efficacy of 2 target FVIII troughs in PwHA aged 12 to 65 years, with severe disease, annualized bleeding rate ≥2, and previous FVIII treatment. PwHA were randomized to 12 months' pharmacokinetic (PK)-guided rurioctocog alfa pegol prophylaxis targeting FVIII troughs of 1% to 3% (reference arm) or 8% to 12% (elevated arm); first 6 months was treatment-adjustment period. The primary endpoint was absence of bleeds during the second 6 months, analyzed using multiple imputations (full analysis set [FAS]). In the 1% to 3% and 8% to 12% arms, respectively, point estimates (95% confidence interval) of proportions of PwHA with zero total bleeds were 42% (29% to 55%) and 62% (49% to 75%) in FAS (N = 115; P = .055) and 40% (27% to 55%) and 67% (52% to 81%) in per-protocol analysis set (N = 95; P = .015). Dosing frequency and consumption varied in each arm. Adverse events (AEs) occurred in 70/115 (60.9%) PwHA; serious AEs in 7/115 (6%) PwHA, including 1 treatment-related in 8% to 12% arm (transient anti-FVIII inhibitor). There were no deaths, serious thrombotic events, or AE-related discontinuations. PK-guided prophylaxis was achievable and efficacious in both arms. No new safety signals were observed in the 8% to 12% arm. These results demonstrate elevated FVIII troughs can increase the proportion of PwHA with zero bleeds and emphasize the importance of personalized treatment. This trial was registered at www.clinicaltrials.gov as #NCT02585960.

Indexed as

AdolescentAdultCoagulantsFactor VIIIFemaleHemophilia AHemorrhageHumansMaleMiddle AgedProspective StudiesTreatment OutcomeYoung AdultBAX 855CoagulantsFactor VIII

Identifiers

PMID33150384
PMCPMC8039905
OpenAlexW3096939226

What OpenQuestion holds

Textmetadata
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.