Evidence map›Paper›PMID 37612608›Full record

Observational studyRespiratory research2023

Lung function trajectories in patients with idiopathic pulmonary fibrosis.

Megan L Neely, Anne S Hellkamp, Shaun Bender, Jamie L Todd, Timothy Liesching, Tracy R Luckhardt, Justin M Oldham, Rishi Raj, Eric S White, Scott M Palmer

Registry-linked trialOpen access · goldAbstract readObservational Study
In one paragraph

Observational study in Respiratory research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01915511 (Idiopathic Pulmonary Fibrosis Prospective Outcomes), which is not on this map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
5.9field-weighted citation impact, top 3% 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.

NCT01915511 recruitingnot on this map

Idiopathic Pulmonary Fibrosis Prospective Outcomes (IPF-PRO) and Interstitial Lung Disease Prospective Outcomes (IPF-PRO/ILD-PRO) Registry

Typeobservational_patient_registrySponsorDuke UniversityRan2014 to 2031Enrolled3,000ConditionsIdiopathic Pulmonary Fibrosis, Interstitial Lung Disease
3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Bexotegrast in Patients with Idiopathic Pulmonary Fibrosis: The INTEGRIS-IPF Clinical Trial.American journal of respiratory and critical care medicine · 2024
    Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Observational
  12. Review
  13. Review
  14. Succinate aggravates pulmonary fibrosis through the succinate/SUCNR1 axis.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

10 authors at 7 institutions in 1 country.

Megan L NeelyDuke Clinical Research Institute, Durham, NC, USA. megan.neely@duke.edu.
Anne S HellkampDuke Clinical Research Institute, Durham, NC, USA.
Shaun BenderBoehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, CT, USA.
Jamie L ToddDuke Clinical Research Institute, Durham, NC, USA.
Timothy LieschingLahey Hospital & Medical Center, Burlington, MA, USA.
Tracy R LuckhardtDepartment of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
Justin M OldhamDivision of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA.
Rishi RajStanford University School of Medicine, Stanford, CA, USA.
Eric S WhiteBoehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, CT, USA.
Scott M PalmerDuke Clinical Research Institute, Durham, NC, USA.
Clinical Research Institute · USBoehringer Ingelheim (United States) · USDuke Medical Center · USLahey Medical Center · USStanford University · USUniversity of Alabama at Birmingham · USUniversity of Michigan–Ann Arbor · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIdiopathic pulmonary fibrosis (IPF) is a progressive fibrosing interstitial lung disease characterised by decline in lung function. We evaluated trajectories of forced vital capacity (FVC) and diffusing capacity (DLco) in a cohort of patients with IPF.

methodsPatients with IPF that was diagnosed or confirmed at the enrolling centre in the previous 6 months were enrolled into the IPF-PRO Registry between June 2014 and October 2018. Patients were followed prospectively, with lung function data collected as part of routine clinical care. Mean trajectories of FVC and DLco % predicted in all patients and in subgroups by characteristics assessed at enrolment were estimated using a joint model that accounted for factors such as disease severity and visit patterns.

resultsOf 1002 patients in the registry, 941 had ≥ 1 FVC and/or DLco measurement after enrolment. The median (Q1, Q3) follow-up period was 35.1 (18.9, 47.2) months. Overall, mean estimated declines in FVC and DLco % predicted were 2.8% and 2.9% per year, respectively. There was no evidence that the mean trajectories of FVC or DLco had a non-linear relationship with time at the population level. Patients who were male, white, had a family history of ILD, were using oxygen, or had prior/current use of antifibrotic therapy at enrolment had greater rates of decline in FVC % predicted. Patients who were male or white had greater rates of decline in DLco % predicted.

conclusionsData from the IPF-PRO Registry suggest a constant rate of decline in lung function over a prolonged period, supporting the inexorably progressive nature of IPF. A graphical abstract summarising the data in this manuscript is available at: https://www.usscicomms.com/respiratory/IPF-PRORegistry_LungFunctionTrajectories .

trial registrationNCT01915511.

Indexed as

Idiopathic Pulmonary FibrosisFemaleHumansLungMaleOxygenPatient AcuityRegistriesOxygenForced vital capacityInterstitial lung diseaseLung function testing

Identifiers

PMID37612608
PMCPMC10463468
OpenAlexW4386116531

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.