Evidence map›Paper›PMID 32409509›Full record

ReviewJournal of medical genetics2020

Update and audit of the St George's classification algorithm of primary lymphatic anomalies: a clinical and molecular approach to diagnosis.

Kristiana Gordon, Ruth Varney, Vaughan Keeley, Katie Riches, Steve Jeffery, Malou Van Zanten, Peter Mortimer, Pia Ostergaard, Sahar Mansour

Abstract readReview
In one paragraph

Review in Journal of medical genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
–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.

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

40 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Open biology · 2025
    Review
  8. Article
  9. Review
  10. [Lymphatic malformations in childhood and adolescence].Radiologie (Heidelberg, Germany) · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Etiology and treatment of cancer-related secondary lymphedema.Clinical & experimental metastasis · 2024
    Review
  15. Article
  16. Review
  17. AInternational journal of molecular sciences · 2024
    Article
  18. Review
  19. Review
  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

9 authors.

Kristiana GordonMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK.
Ruth VarneyMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK.
Vaughan KeeleyLymphedema Clinic, Derby Hospitals NHS Foundation Trust, Derby, UK.
Katie RichesLymphedema Clinic, Derby Hospitals NHS Foundation Trust, Derby, UK.
Steve JefferyMolecular and Clinical Sciences Research Institute, St George's, University of London, London, UK.
Malou Van ZantenMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK.
Peter MortimerMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK.
Pia OstergaardMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK.
Sahar MansourMolecular and Clinical Sciences Research Institute, St George's University of London, London, UK smansour@sgul.ac.uk.ORCID 0000-0001-6629-4118

Funding

British Heart FoundationMedical Research Council MR/P011543/1
6 · The paper itself

Abstract

Primary lymphatic anomalies may present in a myriad of ways and are highly heterogenous. Careful consideration of the presentation can lead to an accurate clinical and/or molecular diagnosis which will assist with management. The most common presentation is lymphoedema, swelling resulting from failure of the peripheral lymphatic system. However, there may be internal lymphatic dysfunction, for example, chylous reflux, or lymphatic malformations, including the thorax or abdomen. A number of causal germline or postzygotic gene mutations have been discovered. Some through careful phenotyping and categorisation of the patients based on the St George's classification pathway/algorithm. The St George's classification algorithm is aimed at providing an accurate diagnosis for patients with lymphoedema based on age of onset, areas affected by swelling and associated clinical features. This has enabled the identification of new causative genes. This update brings the classification of primary lymphatic disorders in line with the International Society for the Study of Vascular Anomalies 2018 classification for vascular anomalies. The St George's algorithm considers combined vascular malformations and primary lymphatic anomalies. It divides the types of primary lymphatic anomalies into lymphatic malformations and primary lymphoedema. It further divides the primary lymphoedema into syndromic, generalised lymphatic dysplasia with internal/systemic involvement, congenital-onset lymphoedema and late-onset lymphoedema. An audit and update of the algorithm has revealed where new genes have been discovered and that a molecular diagnosis was possible in 26% of all patients overall and 41% of those tested.

Indexed as

HumansLymphatic AbnormalitiesLymphatic DiseasesLymphedemaVascular DiseasesVascular Malformationscentral conducting lymphatic anomaly (CCLA)generalised lymphatic anomalies (GLA)lymphaticprimary lymphoedema

Identifiers

PMID32409509
PMCPMC7525776

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Registered trials

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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.