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Active, not recruitingNCT02772549Updated Dec 22, 2023

Early Diagnosis of Pulmonary Fibrosis - Diagnostic Delay

An observational study in Idiopathic Pulmonary Fibrosis, sponsored by Nils Hoyer. Active, not recruiting at 2 sites in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-12-22.

Sponsored by Nils Hoyer · Observational

Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
300
Ages
18 Years and older
Sex
All
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Study summary

Patients with newly diagnosed IPF are investigated for the diagnostic delay before a diagnosis of IPF is made.

Read the detailed description

Pulmonary fibrosis can be secondary to connective-tissue disease, environmental exposure, or drug toxicity, but it can also appear sporadically without any known cause, i.e. idiopathic interstitial pneumonitis (IIP). Idiopathic pulmonary fibrosis (IPF) is the commonest IIP and usually follows a rapidly progressive course with a short median survival time.

IPF is often diagnosed after a long diagnostic delay, which also affects the prognosis. As new anti-fibrotic treatments have been approved, and awareness of IPF is rising, the diagnostic delay and its implications can be expected to be changing. Also, the new diagnostic guidelines of 2011 could change the diagnostic delay. In order to reduce the diagnostic delay, it is important to investigate the health care utilization and decisions made by healthcare professionals in the period before the final diagnosis is made.

This study will prospectively include all patients at the two centres in Denmark where patients are treated for IPF and has thus a good opportunity to include the majority of incident cases of IPF in Denmark. Patients are included immediately after the diagnosis which reduces recall bias. The database will include both patient reported data and objective data from national registries and patient records. A main focus is the distribution of the diagnostic delay between patient and different health care providers, and the health care utilization by the patients before a diagnosis of IPF is made. Risk factors for a delayed diagnosis are investigated. The importance of the diagnostic delay for the prognosis and the course of the disease will also be investigated.

The database created in this study will also be used for future research in IPF.

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Conditions studied

  • Idiopathic Pulmonary Fibrosis

Keywords

  • Diagnosis
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In context

Pulmonary Fibrosis

680 studies on the registry are indexed under Pulmonary Fibrosis; 119 are open to participants now.

This study's planned enrollment of 300 is above the median of 130 across 229 observational studies indexed under Pulmonary Fibrosis.

Browse Pulmonary Fibrosis studies →

Lead sponsor

Nils Hoyer is the lead sponsor of 3 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

All incident patients with IPF at Gentofte hospital and Aarhus university hospital.

Inclusion criteria

  • Diagnosis of IPF according to international guidelines

Exclusion criteria

Exclusion Criteria:

  • Unable to provide written informed consent
  • Age below 18 years
05

Study design

Observational model
Cohort
Time perspective
Other
Enrollment
300 participants (estimated)
Target follow-up
5 Years
Patient registry
Yes
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What researchers measure

Primary outcomes

  1. Number of patients who fulfil any of the following: disease progression or death

    Time frame: 1 year

Secondary outcomes

  1. Number of patients who fulfill any of the following: decrease in lung function, reduced walking distance at 6 minutes walking test, increased need for supplementary oxygen, hospitalization

    Time frame: 1 year

  2. All-cause and disease-specific mortality

    Time frame: 1 year

  3. Number of respiratory and non-respiratory hospitalizations

    Time frame: 1 year

  4. Decrease in walking distance at the 6 minute walking test

    Time frame: 1 year

  5. Change in St. George Respiratory Questionnaire symptom scores

    Time frame: 1 year

  6. Reduction in diffusion capacity (DLCO) or forced vital capacity (FVC)

    Time frame: 1 year

Other outcomes

  1. Diagnostic delays

    Diagnostic delay subdivided into patient related delays and health care related delays.

    Time frame: 1 year

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Study locations

2 sites
  • Gentofte Hospital
    Hellerup, Copenhagen 2800, Denmark
  • Aarhus University Hospital
    Aarhus, 8000, Denmark
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References and documents

Publications

  • Raghu G, Collard HR, Egan JJ, Martinez FJ, Behr J, Brown KK, Colby TV, Cordier JF, Flaherty KR, Lasky JA, Lynch DA, Ryu JH, Swigris JJ, Wells AU, Ancochea J, Bouros D, Carvalho C, Costabel U, Ebina M, Hansell DM, Johkoh T, Kim DS, King TE Jr, Kondoh Y, Myers J, Muller NL, Nicholson AG, Richeldi L, Selman M, Dudden RF, Griss BS, Protzko SL, Schunemann HJ; ATS/ERS/JRS/ALAT Committee on Idiopathic Pulmonary Fibrosis. An official ATS/ERS/JRS/ALAT statement: idiopathic pulmonary fibrosis: evidence-based guidelines for diagnosis and management. Am J Respir Crit Care Med. 2011 Mar 15;183(6):788-824. doi: 10.1164/rccm.2009-040GL. PubMed 21471066 ↗
  • Hoyer N, Prior TS, Bendstrup E, Wilcke T, Shaker SB. Risk factors for diagnostic delay in idiopathic pulmonary fibrosis. Respir Res. 2019 May 24;20(1):103. doi: 10.1186/s12931-019-1076-0. PubMed 31126287 ↗

Individual participant data

Plan to share: Undecided

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 22, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02772549
Lead sponsor
Nils Hoyer
Collaborators
Aarhus University Hospital
Responsible party
Nils Hoyer (MD, University Hospital, Gentofte, Copenhagen) — Sponsor-investigator
First posted
May 13, 2016
Start date
Mar 2016
Primary completion
Dec 2022
Completion
Dec 2028 (estimated)
Last update
Dec 22, 2023

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Dec 2023. You cannot join it, but the record below documents what was studied.

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