Evidence map›Paper›PMID 25884422›Full record

ArticleBMC nephrology2015

The prevalence of occult hepatitis B virus (HBV) infection in a large multi-ethnic haemodialysis cohort.

Luciana Sowole, Wendy Labbett, Mauli Patel, Aisling O'Riordan, Jennifer Cross, Andrew Davenport, Tanzina Haque

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC nephrology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. High Prevalence of Occult Hepatitis B Virus Infection among Iranian Hemodialysis Patients.The American journal of tropical medicine and hygiene · 2023
    Article
  6. Control of occult hepatitis B virus infection.Advances in laboratory medicine · 2022
    Article
  7. Article
  8. Observational
  9. Article
  10. Article
  11. Update on occult hepatitis B virus infection.World journal of gastroenterology · 2016
    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

7 authors at 2 institutions in 1 country.

Luciana SowoleDepartment of Virology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. luciana.sowole@nhs.net.
Wendy LabbettDepartment of Virology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. wendy.labbett@nhs.net.
Mauli PatelDepartment of Virology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. mauli.patel@nhs.net.
Aisling O'RiordanCentre for Nephrology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. aisling.o'riordan@nhs.net.
Jennifer CrossCentre for Nephrology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. Jennifer.cross@nhs.net.
Andrew DavenportCentre for Nephrology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. andrewdavenport@nhs.net.
Tanzina HaqueDepartment of Virology, Royal Free Hospital, Pond Street, Hampstead, London, NW3 2QG, UK. thaque@nhs.net.
University College London · GBThe Royal Free Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHaemodialysis patients are at increased risk of exposure to blood borne viruses. To reduce transmission in the UK, all haemodialysis patients are regularly screened, and if susceptible to Hepatitis B virus (HBV) infection, vaccinated.

methodsThis retrospective study was undertaken to determine the HBV immune status in a large dialysis cohort and the prevalence of occult HBV infection, defined as the presence of anti-HBcore antibody (anti-HBcAb) and HBV DNA without detectable HB surface antigen (HBsAg). Information on HBV status was retrieved from haemodialysis patients under the care of The Royal Free Hospital, London, UK between 2009-2010. Available sera from 138 of 161 anti-HBcAb positive/HBsAg negative individuals were anonymised and tested for HBV DNA by a real time quantitative PCR.

results15 (2%) of 793 patients had chronic HBV infection (HBsAg positive). 161 (20%) were anti-HBcAb positive but HBsAg negative suggesting past infection. 335 (54%) of the remaining 617 patients were considered immune following vaccination (anti-HBsAb > 10 IU/L). Three (2.2%) of the 138 anti-HBcAb positive, HBsAg negative patients had detectable HBV DNA (3, 5 and 9 IU/ml). Standard liver function tests were normal in these patients.

conclusionsIn a large multi-ethnic London haemodialysis cohort, 20% patients had evidence of past HBV infection. Despite this, the prevalence of occult HBV was found to be low and the very low levels of HBV DNA detected are unlikely to pose a nosocomial transmission risk in the presence of robust vaccination and infection control measures.

Indexed as

AdultAgedAged, 80 and overAge DistributionChi-Square DistributionCohort StudiesEthnicityFemaleFollow-Up StudiesHepatitis B, ChronicHepatitis B virusHumansKidney Failure, ChronicLondonMaleMiddle Aged

Identifiers

PMID25884422
PMCPMC4352542
OpenAlexW2005863474

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.