Evidence map›Paper›PMID 40888606›Full record

ArticleThe Laryngoscope2026

Increased Risk of Cholesteatoma in Individuals With Alpha-1 Antitrypsin Deficiency: A Cohort Study.

Abdulla Ali, Helene Andresen Ravn, Morten Dahl, Bjarki Ditlev Djurhuus

Abstract read
In one paragraph

Article in The Laryngoscope, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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

1 citing paper in PubMed.

  1. 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

4 authors.

Abdulla AliDepartment of Otorhinolaryngology, Zealand University Hospital, Køge, Denmark.ORCID 0009-0006-3612-8614
Helene Andresen RavnDepartment of Otorhinolaryngology, Zealand University Hospital, Køge, Denmark.
Morten DahlDepartment of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Bjarki Ditlev DjurhuusDepartment of Otorhinolaryngology, Zealand University Hospital, Køge, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo estimate the risk of cholesteatoma in patients with alpha-1 antitrypsin deficiency (AATD) compared to the general population using time-to-event analysis.

methodsWe conducted a nationwide nested cohort study identifying all patients with AATD in Denmark and subsequently matching each case with up to 10 controls based on age, sex, and municipality. Hazard ratios (HR) of cholesteatoma by AATD were calculated using Cox regression analysis adjusted for age and sex.

resultsThe study identified 2702 individuals with AATD and 26,750 control subjects. Individuals with AATD versus controls had a HR for cholesteatoma surgery of 3.62 (95% CI: 1.93-6.80) and a HR for non-cholesteatoma surgery of 1.40 (1.04-1.89).

conclusionIndividuals with AATD had a 3.6-fold increased risk of cholesteatoma surgery compared with matched controls without AATD. The data support that AATD contributes to pathophysiological processes underlying the development of cholesteatoma. LEVEL OF EVIDENCE: 3:

Indexed as

alpha 1-Antitrypsin DeficiencyCholesteatoma, Middle EarAdolescentAdultAgedCase-Control StudiesCohort StudiesDenmarkFemaleHumansMaleMiddle AgedProportional Hazards ModelsRisk FactorsYoung Adultalpha‐1 antitrypsin deficiency (AATD)cholesteatomamiddle ear surgery

Identifiers

PMID40888606
PMCPMC12793955

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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.