Evidence map›Paper›PMID 33407668›Full record

ArticleOrphanet journal of rare diseases2021

Predictors of mortality in patients with hereditary hemorrhagic telangiectasia.

K P Thompson, J Nelson, H Kim, L Pawlikowska, D A Marchuk, M T Lawton, Marie E Faughnan, Brain Vascular Malformation Consortium HHT Investigator Group

Open access · goldAbstract read
In one paragraph

Article in Orphanet journal of rare diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.4field-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

16 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
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  4. Observational
  5. Article
  6. Article
  7. Review
  8. Article
  9. Hereditary haemorrhagic telangiectasia.Nature reviews. Disease primers · 2025
    Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
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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

8 authors at 5 institutions in 2 countries.

K P ThompsonToronto HHT Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond St, Toronto, ON, M5B-1W8, USA.
J NelsonDepartment of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, CA, USA.
H KimDepartment of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, CA, USA.
L PawlikowskaDepartment of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, CA, USA.
D A MarchukDepartment of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, USA.
M T LawtonBarrow Neurological Institute, Phoenix, AZ, USA.
Marie E FaughnanToronto HHT Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond St, Toronto, ON, M5B-1W8, USA. Marie.Faughnan@unityhealth.to.ORCID 0000-0002-3746-383X
Brain Vascular Malformation Consortium HHT Investigator Group
University of California, San Francisco · USBarrow Neurological Institute · USDuke Medical Center · USSt. Michael's Hospital · CAUniversity of Toronto · CA

Funding

The Impact of COVID-19 on People Living with Rare Diseases and Their FamiliesU2CTR002818 · NCATS · CINCINNATI CHILDRENS HOSP MED CTR · PI Michal Kouril · 2019 to 2026
$51.2M
VCRC Administration UnitU54NS065705 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KIM, HELEN · 2009 to 2023
$20.8M
NCATS NIH HHS U2C TR002818NINDS NIH HHS U54 NS065705
6 · The paper itself

Abstract

backgroundRetrospective questionnaire and healthcare administrative data suggest reduced life expectancy in untreated hereditary hemorrhagic telangiectasia (HHT). Prospective data suggests similar mortality, to the general population, in Denmark's centre-treated HHT patients. However, clinical phenotypes vary widely in HHT, likely affecting mortality. We aimed to measure predictors of mortality among centre-treated HHT patients. HHT patients were recruited at 14 HHT centres of the Brain Vascular Malformation Consortium (BVMC) since 2010 and followed annually. Vital status, organ vascular malformations (VMs) and clinical symptoms data were collected at baseline and during follow-up (N = 1286). We tested whether organ VMs, HHT symptoms and HHT genes were associated with increased mortality using Cox regression analysis, adjusting for patient age, sex, and smoking status.

results59 deaths occurred over average follow-up time of 3.4 years (max 8.6 years). A history of anemia was associated with increased mortality (HR = 2.93, 95% CI 1.37-6.26, p = 0.006), as were gastro-intestinal (GI) bleeding (HR = 2.63, 95% CI 1.46-4.74, p = 0.001), and symptomatic liver VMs (HR = 2.10, 95% CI 1.15-3.84, p = 0.015). Brain VMs and pulmonary arteriovenous malformations (AVMs) were not associated with mortality (p > 0.05). Patients with SMAD4 mutation had significantly higher mortality (HR = 18.36, 95% CI 5.60-60.20, p < 0.001) compared to patients with ACVRL1 or ENG mutation, but this estimate is imprecise given the rarity of SMAD4 patients (n = 33, 4 deaths).

conclusionsChronic GI bleeding, anemia and symptomatic liver VMs are associated with increased mortality in HHT patients, independent of age, and in keeping with the limited treatment options for these aspects of HHT. Conversely, mortality does not appear to be associated with pulmonary AVMs or brain VMs, for which patients are routinely screened and treated preventatively at HHT Centres. This demonstrates the need for development of new therapies to treat chronic anemia, GI bleeding, and symptomatic liver VMs in order to reduce mortality among HHT patients.

Indexed as

Arteriovenous FistulaTelangiectasia, Hereditary HemorrhagicActivin Receptors, Type IIEndoglinHumansProspective StudiesRetrospective StudiesActivin Receptors, Type IIACVRL1 protein, humanEndoglinArteriovenous malformationHereditary hemorrhagic telangiectasiaPredictors of mortalityTelangiectasiaVascular malformation

Identifiers

PMID33407668
PMCPMC7789194
OpenAlexW3119435109

What OpenQuestion holds

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LicenceCC BY
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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.