Evidence map›Paper›PMID 27520394›Full record

ArticleJournal of the American Academy of Dermatology2016

HLA-Cw6 homozygosity in plaque psoriasis is associated with streptococcal throat infections and pronounced improvement after tonsillectomy: A prospective case series.

Ragna H Thorleifsdottir, Sigrun L Sigurdardottir, Bardur Sigurgeirsson, Jon H Olafsson, Hannes Petersen, Martin I Sigurdsson, Johann E Gudjonsson, Andrew Johnston, Helgi Valdimarsson

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Academy of Dermatology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Antistreptococcal treatment of psoriasis: a systematic review.Archives of dermatological research · 2024
    Pooled it
  2. Article
  3. Article
  4. Group AScience immunology · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. HLA-Cw1 and Psoriasis.American journal of clinical dermatology · 2021
    Review
  10. The Association Between Oral Health and Skin Disease.The Journal of clinical and aesthetic dermatology · 2020
    Article
  11. Interleukin-22 and Its Correlation with Disease Activity in Plaque Psoriasis.Archivum immunologiae et therapiae experimentalis · 2019
    Article
  12. Psoriasis Pathogenesis and Treatment.International journal of molecular sciences · 2019
    Review
  13. Unmet Needs in the Field of Psoriasis: Pathogenesis and Treatment.Clinical reviews in allergy & immunology · 2018
    Review
  14. The Psoriasis Risk AlleleInfection and immunity · 2018
    Article
  15. Psoriasis in Pediatric Age Group.Indian journal of dermatology
    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

9 authors at 4 institutions in 3 countries.

Ragna H ThorleifsdottirSection of Dermatology, Faculty of Medicine, University of Iceland, Reykjavik, Iceland; Department of Immunology, Landspitali-National University Hospital of Iceland, Reykjavik, Iceland; Department of Dermatology, Akademiska University Hospital, Uppsala, Sweden. Electronic address: ragnahlin@gmail.com.
Sigrun L SigurdardottirDepartment of Immunology, Landspitali-National University Hospital of Iceland, Reykjavik, Iceland.
Bardur SigurgeirssonSection of Dermatology, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.
Jon H OlafssonSection of Dermatology, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.
Hannes PetersenDepartment of Otolaryngology-Head and Neck Surgery, Landspitali-National University Hospital of Iceland, Reykjavik, Iceland.
Martin I SigurdssonDepartment of Anesthesiology and Critical Care, Landspitali-National University Hospital of Iceland, Reykjavik, Iceland.
Johann E GudjonssonDepartment of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan.
Andrew JohnstonDepartment of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan.
Helgi ValdimarssonDepartment of Immunology, Landspitali-National University Hospital of Iceland, Reykjavik, Iceland.
National University Hospital of Iceland · ISUniversity of Iceland · ISUniversity of Michigan · USUppsala University Hospital · SE

Funding

Role of IL-13 and the IL-13 Associated rs20541 Risk Variant in the Pathogenesis of PsoriasisR01AR069071 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GUDJONSSON, JOHANN ELI · 2015 to 2019
$2.1M
Role of the Psoriasis Associated IL23R Risk Variants on Th17 Biology and FunctionK08AR060802 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GUDJONSSON, JOHANN ELI · 2011 to 2015
$636k
Biologic Activities of IL-36 Cytokines in PsoriasisK01AR064765 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JOHNSTON, ANDREW · 2013 to 2017
$506k
NIAMS NIH HHS K01 AR064765NIAMS NIH HHS K08 AR060802NIAMS NIH HHS R01 AR069071
6 · The paper itself

Abstract

backgroundCarriage of the HLA-Cw*0602 allele is associated with a particular set of clinical features and treatment responses in psoriasis. Tonsillectomy can improve psoriasis.

objectivesWe sought to evaluate whether HLA-Cw*0602 predicts a favorable outcome after tonsillectomy of patients with psoriasis.

methodsThis prospective case series followed up 28 tonsillectomized patients with plaque psoriasis for 24 months. The Psoriasis Area and Severity Index, Psoriasis Disability Index, and Psoriasis Life Stress Inventory were used for assessment. Tonsils were swabbed for bacteria and patients genotyped for HLA-Cw*0602.

resultsAfter tonsillectomy, HLA-Cw*0602 homozygotes showed significantly more improvement, compared with heterozygous and HLA-Cw*0602-negative patients. Thus, Psoriasis Area and Severity Index score was reduced by 82% in the homozygous patients compared with 42% and 31%, respectively (P < .001), Psoriasis Disability Index score improved by 87% compared with 38% and 41%, respectively (P < .001), and Psoriasis Life Stress Inventory score was 82% reduced compared with 60% and 54%, respectively (P < .001). The homozygotes more often had psoriasis onset associated with a throat infection (P = .007) and an increased frequency of streptococcal throat infections per lifetime (P = .038). LIMITATIONS: Few patients were included and some data were retrospective.

conclusionsHomozygous HLA-Cw*0602 carriage in plaque psoriasis may predict a favorable outcome after tonsillectomy.

Indexed as

TonsillectomyAdultAge of OnsetAllelesFemaleFollow-Up StudiesHLA-C AntigensHumansMalePharyngitisPrognosisProspective StudiesPsoriasisSeverity of Illness IndexStreptococcal InfectionsTonsillitisHLA-C*06 antigenHLA-C Antigenschronic plaque psoriasisHLA-Cw*0602Psoriasis Disability IndexPsoriasis Life Stress Inventorysore throatstreptococcal throat infectiontonsillectomy

Identifiers

PMID27520394
PMCPMC5067202
OpenAlexW2512709797

What OpenQuestion holds

Textmetadata
LicenceTDM
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.