Evidence map›Paper›PMID 33351111›Full record

ArticleBlood advances2020

The evolution of factor XI and the kallikrein-kinin system.

Michał B Ponczek, Aleksandr Shamanaev, Alec LaPlace, S Kent Dickeson, Priyanka Srivastava, Mao-Fu Sun, Andras Gruber, Christian Kastrup, Jonas Emsley, David Gailani

Open access · goldAbstract read
In one paragraph

Article in Blood advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

28 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Crystal structure of coagulation factor XII N-terminal domains 1-5.Acta crystallographica. Section D, Structural biology · 2025
    Article
  5. Article
  6. Article
  7. Keratin 1 modulates intestinal barrier and immune responseWorld journal of gastroenterology · 2025
    Article
  8. Factor XII Structure-Function Relationships.Seminars in thrombosis and hemostasis · 2024
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Comparative sequence analysis of vitamin K-dependent coagulation factors.Journal of thrombosis and haemostasis : JTH · 2022
    Article
  20. 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 at 5 institutions in 4 countries.

Michał B PonczekDepartment of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
Aleksandr ShamanaevDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
Alec LaPlaceDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
S Kent DickesonDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
Priyanka SrivastavaDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
Mao-Fu SunDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
Andras GruberDepartment of Biomedical Engineering and.
Christian KastrupMichael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada; and.
Jonas EmsleyBiodiscovery Institute, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom.
David GailaniDepartment of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
Vanderbilt University Medical Center · USOregon Health & Science University · USUniversity of British Columbia · CAUniversity of Łódź · PLUniversity of Nottingham · GB

Funding

Biochemistry and Pathophysiology of Factor XI and Contact ActivationR35HL140025 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI GAILANI, DAVID · 2018 to 2024
$5.5M
British Heart Foundation RG/12/9/29775NHLBI NIH HHS R35 HL140025
6 · The paper itself

Abstract

Factor XI (FXI) is the zymogen of a plasma protease (FXIa) that contributes to hemostasis by activating factor IX (FIX). In the original cascade model of coagulation, FXI is converted to FXIa by factor XIIa (FXIIa), a component, along with prekallikrein and high-molecular-weight kininogen (HK), of the plasma kallikrein-kinin system (KKS). More recent coagulation models emphasize thrombin as a FXI activator, bypassing the need for FXIIa and the KKS. We took an evolutionary approach to better understand the relationship of FXI to the KKS and thrombin generation. BLAST searches were conducted for FXI, FXII, prekallikrein, and HK using genomes for multiple vertebrate species. The analysis shows the KKS appeared in lobe-finned fish, the ancestors of all land vertebrates. FXI arose later from a duplication of the prekallikrein gene early in mammalian evolution. Features of FXI that facilitate efficient FIX activation are present in all living mammals, including primitive egg-laying monotremes, and may represent enhancement of FIX-activating activity inherent in prekallikrein. FXI activation by thrombin is a more recent acquisition, appearing in placental mammals. These findings suggest FXI activation by FXIIa may be more important to hemostasis in primitive mammals than in placental mammals. FXI activation by thrombin places FXI partially under control of the vitamin K-dependent coagulation mechanism, reducing the importance of the KKS in blood coagulation. This would explain why humans with FXI deficiency have a bleeding abnormality, whereas those lacking components of the KKS do not.

Indexed as

Factor XIFactor XI DeficiencyAnimalsFactor XIIaFemaleHumansKallikrein-Kinin SystemPregnancyPrekallikreinFactor XIFactor XIIaPrekallikrein

Identifiers

PMID33351111
PMCPMC7757006
OpenAlexW3111429272

What OpenQuestion holds

Textmetadata
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.