Evidence map›Paper›PMID 36759007›Full record

Observational studyRMD open2023

Prognosis of spontaneous pneumomediastinum occurring in dermatomyositis or polymyositis patients with interstitial lung disease according to antimelanoma differentiation-associated gene 5 antibody status: a retrospective cohort study.

Kazuya Abe, Shunsuke Furuta, Yoshihisa Kobayashi, Takao Sugiyama, Shin-Ichiro Kagami, Daiki Nakagomi, Taro Iwamoto, Kei Ikeda, Hiroshi Nakajima

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in RMD open, 2023. 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
4.5field-weighted citation impact, top 5% 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, 21 citations in OpenAlex.

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  8. Effectiveness and safety of tofacitinibThe European respiratory journal · 2025
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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

9 authors at 5 institutions in 1 country.

Kazuya AbeDepartment of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan.ORCID 0000-0002-5300-1862
Shunsuke FurutaDepartment of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan shfuruta@chiba-u.jp.
Yoshihisa KobayashiDepartment of Internal Medicine, Chiba Aoba Municipal Hospital, Chiba, Japan.ORCID 0000-0002-3645-937X
Takao SugiyamaDepartment of Rheumatology, National Hospital Organization Shimoshizu Hospital, Yotsukaido, Chiba, Japan.
Shin-Ichiro KagamiResearch Center for Allergy and Clinical Immunology, Asahi General Hospital, Asahi, Chiba, Japan.ORCID 0000-0001-9439-8918
Daiki NakagomiThird Department of Internal Medicine, University of Yamanashi Hospital, Chuo, Japan.ORCID 0000-0003-1682-9799
Taro IwamotoDepartment of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan.ORCID 0000-0003-1663-3518
Kei IkedaDepartment of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan.ORCID 0000-0003-0574-9611
Hiroshi NakajimaDepartment of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan.ORCID 0000-0001-8595-9381
Chiba University Hospital · JPAsahi General Hospital · JPChiba Aoba Municipal Hospital · JPNational Hospital Organization · JPUniversity of Yamanashi Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesSpontaneous pneumomediastinum (SPNM) historically has been considered a poor prognostic factor in dermatomyositis/polymyositis patients complicated with interstitial lung disease (ILD). However, there is a lack of actual data regarding the association between SPNM occurrence and mortality in dermatomyositis/polymyositis patients. This study aimed to assess the association between SPNM occurrence and mortality in myositis patients with ILD according to antimelanoma differentiation-associated gene 5 (MDA5) antibody status.

methodsDermatomyositis/polymyositis patients with ILD who were hospitalised at five Japanese hospitals from 2016 to 2020 were included in this retrospective observational study. We collected data about baseline characteristics including myositis-specific autoantibodies, treatments, SPNM and death within 1 year from therapy initiation or strengthening. Baseline characteristics and outcomes were compared between patients with and without SPNM (the SPNM group and the non-SPNM group, respectively).

resultsA total of 119 patients were analysed. SPNM occurred in 23 patients, and 15 patients died. Fifteen patients with SPNM were anti-MDA5 antibody positive. The mortality rate was significantly higher in the SPNM group (34.8%) than in the non-SPNM group (7.3%) (p=0.001). All deaths in the SPNM group occurred in anti-MDA5 antibody-positive patients (8/15), whereas none of the anti-MDA5 antibody-negative patients in the SPNM group died (0/8). In anti-MDA5 antibody-positive patients, the mortality rate was significantly higher in patients with SPNM occurrence (53.3%) than in those without SPNM occurrence (4.0%) (p=0.001).

conclusionSPNM occurred more frequently in anti-MDA5 antibody-positive than in anti-MDA5 antibody-negative myositis patients. SPNM occurrence was associated with higher mortality risk, especially in anti-MDA5 antibody-positive patients.

Indexed as

DermatomyositisLung Diseases, InterstitialMediastinal EmphysemaMyositisPolymyositisHumansPrognosisRetrospective StudiesDermatomyositisEpidemiologyPolymyositis

Identifiers

PMID36759007
PMCPMC9923350
OpenAlexW4319787588

What OpenQuestion holds

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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.