Evidence map›Paper›PMID 38519114›Full record

ArticleBMJ open respiratory research2024

Inhaled treprostinil in patients with pulmonary hypertension associated with interstitial lung disease with less severe haemodynamics: a post hoc analysis of the INCREASE study.

Jason Weatherald, Steven D Nathan, Karim El-Kersh, Rahul G Argula, Hilary M DuBrock, Franz P Rischard, Steven J Cassady, James Tarver, Deborah J Levine, Victor F Tapson and 4 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in BMJ open respiratory research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
7.1field-weighted citation impact, top 2% 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

20 citing papers in PubMed, 17 citations in OpenAlex.

  1. Acute exacerbation in fibrotic interstitial lung disease: an international working group report.American journal of respiratory and critical care medicine · 2026
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  20. Pulmonary hypertension associated with lung diseases.The European respiratory journal · 2024
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 11 institutions in 2 countries.

Jason WeatheraldDepartment of Medicine, Division of Pulmonary Medicine, University of Alberta, Edmonton, Alberta, Canada.
Steven D NathanInova Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, Virginia, USA.
Karim El-KershUniversity of Arizona College of Medicine, Phoenix, Arizona, USA.
Rahul G ArgulaMedical University of South Carolina, Charleston, South Carolina, USA.
Hilary M DuBrockMayo Clinic, Rochester, Minnesota, USA.
Franz P RischardUniversity of Arizona College of Medicine, Tucson, Arizona, USA.
Steven J CassadyUniversity of Maryland School of Medicine, Baltimore, Maryland, USA.
James TarverAdventHealth Central Florida, Orlando, Florida, USA.
Deborah J LevineStanford University, Stanford, California, USA.
Victor F TapsonCedars-Sinai Medical Center, Los Angeles, California, USA.
Chunqin DengUnited Therapeutics Corp Research Triangle Park, Research Triangle Park, North Carolina, USA.
Eric ShenUnited Therapeutics Corp Research Triangle Park, Research Triangle Park, North Carolina, USA.
Manisit DasUnited Therapeutics Corp Research Triangle Park, Research Triangle Park, North Carolina, USA.
Aaron B WaxmanBrigham and Women's Hospital, Boston, Massachusetts, USA abwaxman@bwh.harvard.edu.
Triangle · USUniversity of Arizona · USAdventHealth East Orlando · USBrigham and Women's Hospital · USCedars-Sinai Medical Center · USInova Fairfax Hospital · USMayo Clinic · USMedical University of South Carolina · USStanford University · USUniversity of Alberta · CAUniversity of Maryland, Baltimore · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInhaled treprostinil (iTre) is the only treatment approved for pulmonary hypertension due to interstitial lung disease (PH-ILD) to improve exercise capacity. This post hoc analysis evaluated clinical worsening and PH-ILD exacerbations from the 16-week INCREASE study and change in 6-minute walking distance (6MWD) in the INCREASE open-label extension (OLE) in patients with less severe haemodynamics.

methodsPatients were stratified by baseline pulmonary vascular resistance (PVR) of <4 Wood units (WU) versus ≥4 WU and <5 WU versus ≥5 WU. Exacerbations of underlying lung disease, clinical worsening and change in N-terminal prohormone of brain natriuretic peptide (NT-proBNP) in INCREASE were evaluated. For the OLE, patients previously assigned to placebo were considered to have a 16-week treatment delay. 6MWD and clinical events in the OLE were evaluated by PVR subgroup.

resultsOf the 326 patients enrolled in INCREASE, patients with less severe haemodynamics receiving iTre had fewer exacerbations of underlying lung disease and clinical worsening events. This was supported by the Bayesian analysis of the risk of disease progression (HR<1), and significant decreases in NT-proBNP levels. In the OLE, patients without a treatment delay had improved exercise capacity after 1-year compared with those with a 16-week treatment delay (22.1 m vs -10.3 m). Patients with a PVR of ≤5 WU without a treatment delay had a change of 5.5 m compared with -8.2 m for those with a treatment delay. Patients without a treatment delay had a prolonged time to hospitalisation, lung disease exacerbation and death.

conclusionTreatment with iTre led to consistent benefits in clinical outcomes in patients with PH-ILD and less severe haemodynamics. Earlier treatment in less severe PH-ILD may lead to better exercise capacity long-term, however, the subgroup analyses in this post hoc study were underpowered and confirmation of these findings is needed.

Indexed as

EpoprostenolHypertension, PulmonaryLung Diseases, InterstitialBayes TheoremHemodynamicsHumansRandomized Controlled Trials as TopicEpoprostenoltreprostinilPrimary Pulmonary Hypertension

Identifiers

PMID38519114
PMCPMC10961504
OpenAlexW4393098870

What OpenQuestion holds

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LicenceCC BY-NC
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.