Evidence map›Paper›PMID 39576433›Full record

SynthesisAdvances in therapy2025

Efanesoctocog Alfa versus Standard and Extended Half-Life Factor VIII Prophylaxis in Adolescent and Adult Patients with Haemophilia A without Inhibitors.

Robert Klamroth, Nana Kragh, Alix Arnaud, Patricia Guyot, Amanda Wilson, Piotr Wojciechowski, Marlena Wdowiak, Wojciech Margas, Linda Bystrická, Alberto Tosetto

Registry-linked trialAbstract readSystematic ReviewComparative Study
In one paragraph

Synthesis in Advances in therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04161495 (A Phase 3 Open-Label, Multicenter Study of the Safety, Efficacy, and Pharmacokinetics of Intravenous Recombinant Coagulation Factor VIII Fc-von Willebrand Factor-XTEN Fusion Protein), which is not on this map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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.

NCT04161495 phase3completednot on this map

A Phase 3 Open-Label, Multicenter Study of the Safety, Efficacy, and Pharmacokinetics of Intravenous Recombinant Coagulation Factor VIII Fc-von Willebrand Factor-XTEN Fusion Protein (rFVIIIFc-VWF-XTEN; BIVV001) in Previously Treated Patients ≥12 Years of Age With Severe Hemophilia A

TypeinterventionalSponsorBioverativ, a Sanofi companyRan2019 to 2022Enrolled159ConditionsFactor VIII DeficiencyArmsefanesoctocog alfa (BIVV001)
3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Extended Half-Life Factor Concentrates in Haemophilia Treatment.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026
    Review
  2. Laboratory Challenges in the Era of Novel Haemophilia Therapies.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
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

10 authors.

Robert KlamrothVivantes Klinikum im Friedrichshain, Berlin, Germany.
Nana KraghSwedish Orphan Biovitrum AB, 112 76 Stockholm, SwedenSobi, Stockholm, Sweden. nana.kragh@sobi.com.ORCID 0000-0002-9222-4479
Alix ArnaudSanofi, Cambridge, MA, USA.
Patricia GuyotSanofi, Cambridge, MA, USA.
Amanda WilsonSanofi, Cambridge, MA, USA.
Piotr WojciechowskiAssignity, Krakow, Poland.
Marlena WdowiakPutnam PHMR, Krakow, Poland.
Wojciech MargasAssignity, Krakow, Poland.
Linda BystrickáSwedish Orphan Biovitrum AB, 112 76 Stockholm, SwedenSobi, Stockholm, Sweden.
Alberto TosettoHematology Department, S. Bortolo Hospital, Vicenza, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIn the Phase 3 XTEND-1 trial, (NCT04161495) efanesoctocog alfa prophylaxis provided superior bleed protection versus pre-study factor VIII (FVIII) replacement therapy in patients with severe haemophilia A. The aim of this study was to indirectly compare bleed outcomes between efanesoctocog alfa and standard/extended half-life (SHL and EHL) FVIII replacement therapies in adolescent and adult patients with severe haemophilia A without inhibitors.

methodsA systematic literature review was conducted to identify Phase 3 trials of EHL and SHL FVIII replacement therapies for comparison with efanesoctocog alfa data from XTEND-1. Matching-adjusted indirect comparisons were used to compare annualised bleeding rates (ABRs) for any, treated, joint, and spontaneous bleeds between efanesoctocog alfa and comparators. The estimates from respective comparisons were pooled using random-effect meta-analyses to evaluate the overall difference between efanesoctocog alfa and comparator therapies.

resultsFour EHL therapies (rurioctocog alfa pegol, efmoroctocog alfa, turoctocog alfa pegol, damoctocog alfa pegol) and two octocog alfa SHL therapies were included. In meta-analyses, efanesoctocog alfa was associated with significantly lower ABRs for any [mean difference (95% CI) - 2.24 ( - 3.24; - 1.25)], spontaneous [ - 1.52 ( - 2.33; - 0.72)], and joint bleeds [ - 1.60 ( - 2.32; - 0.88)] versus EHL therapies, and with significantly lower ABRs for any [ - 3.61 ( - 4.43; - 2.79)], treated [ - 1.55 ( - 1.89; - 1.20)], spontaneous [ - 2.52 ( - 3.31; - 1.72)], and joint bleeds [ - 3.42 ( - 4.77; - 2.08)] versus SHL therapies.

conclusionEfanesoctocog alfa was associated with significantly lower ABRs (any, spontaneous and joint) compared with EHL or SHL prophylaxis therapies. Patients had, on average, 2.2 and 3.6 fewer bleeds per year versus EHL and SHL therapies, respectively.

Indexed as

Factor VIIIHemophilia AHemorrhageAdolescentAdultClinical Trials, Phase III as TopicDrug CombinationsHalf-LifeHumansYoung AdultDrug CombinationsFactor VIIIAnnualised bleeding rateEfanesoctocog alfaFactor VIII replacement therapiesHaemophilia AIndirect treatment comparison

Identifiers

PMID39576433
PMCPMC11782424

What OpenQuestion holds

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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.