Evidence map›Paper›PMID 34109608›Full record

ArticleBritish journal of haematology2021

Fusion of engineered albumin with factor IX Padua extends half-life and improves coagulant activity.

Silvia Lombardi, Kristin H Aaen, Jeannette Nilsen, Mattia Ferrarese, Torleif T Gjølberg, Francesco Bernardi, Mirko Pinotti, Jan T Andersen, Alessio Branchini

Open access · greenAbstract read
In one paragraph

Article in British journal of haematology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 23% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Extravascular factor IX: a semicentennial narrative review.Research and practice in thrombosis and haemostasis · 2026
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Translational readthrough atHaematologica · 2023
    Article
  12. Article
  13. Gene Therapy in Hemophilia: Recent Advances.International journal of molecular sciences · 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

9 authors at 2 institutions in 2 countries.

Silvia LombardiDepartment of Life Sciences and Biotechnology and LTTA Centre, University of Ferrara, Ferrara, Italy.ORCID 0000-0003-2918-4010
Kristin H AaenDepartment of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway.ORCID 0000-0001-7181-1052
Jeannette NilsenDepartment of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway.ORCID 0000-0001-7892-0892
Mattia FerrareseDepartment of Life Sciences and Biotechnology and LTTA Centre, University of Ferrara, Ferrara, Italy.ORCID 0000-0001-7827-9249
Torleif T GjølbergDepartment of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway.
Francesco BernardiDepartment of Life Sciences and Biotechnology and LTTA Centre, University of Ferrara, Ferrara, Italy.ORCID 0000-0003-0305-2212
Mirko PinottiDepartment of Life Sciences and Biotechnology and LTTA Centre, University of Ferrara, Ferrara, Italy.ORCID 0000-0002-4114-7055
Jan T AndersenDepartment of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway.ORCID 0000-0003-1710-1628
Alessio BranchiniDepartment of Life Sciences and Biotechnology and LTTA Centre, University of Ferrara, Ferrara, Italy.ORCID 0000-0002-6113-2694
University of Ferrara · ITOslo University Hospital · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The short half-life of coagulation factor IX (FIX) for haemophilia B (HB) therapy has been prolonged through fusion with human serum albumin (HSA), which drives the neonatal Fc receptor (FcRn)-mediated recycling of the chimera. However, patients would greatly benefit from further FIX-HSA half-life extension. In the present study, we designed a FIX-HSA variant through the engineering of both fusion partners. First, we developed a novel cleavable linker combining the two FIX activation sites, which resulted in improved HSA release. Second, insertion of the FIX R338L (Padua) substitution conferred hyperactive features (sevenfold higher specific activity) as for FIX Padua alone. Furthermore, we exploited an engineered HSA (QMP), which conferred enhanced human (h)FcRn binding [dissociation constant (K

Indexed as

AnimalsBlood CoagulationFactor IXFemaleHalf-LifeHemophilia BHumansMaleMice, TransgenicProtein EngineeringRecombinant Fusion ProteinsSerum Albumin, HumanFactor IXfactor IX-PaduaRecombinant Fusion ProteinsSerum Albumin, Humanalbumin fusion proteinsfactor IX PaduaFcRn receptorhuman serum albuminprotein engineering

Identifiers

PMID34109608
PMCPMC8362221
OpenAlexW3165930517

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.