A Prospective, Multi-Center Registry Study of Progressive Pulmonary Fibrosis (PPF) in China (PROFINA)

July 1, 2026 updated by: Zuojun Xu
This is a nationwide multicenter prospective non-interventional registry study enrolling 600 Chinese patients diagnosed with PPF over a 3-year period (9-month enrollment, 2-year follow-up, and 3 months for data analysis and publication). Eligible participants must meet the PPF criteria defined by the 2022 ATS/ERS/JRS/ALAT guidelines, while patients with IPF, no baseline chest HRCT, or refusal to sign informed consent will be excluded. The primary endpoint is the absolute change in FVC (mL) at 1- and 2-year follow-ups. The core objective is to investigate real-world disease progression in Chinese PPF patients, with secondary objectives to analyze their clinical characteristics, current treatment status, and unmet clinical needs.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
600

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: Zuojun Xu Zuojun Xu
  • Phone Number: +86 13671345136
  • Email: xuzi@hotmail.com

Study Locations

  • China
      • Beijing, China
        • Recruiting
        • Peking Union Medical College Hospital
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients diagnosed with PPF in China

Description

Inclusion Criteria:

  1. Diagnosis of PPF within the past year, according to the 2022 ATS/ERS/JRS/ALAT guidelines;
  2. Patients who are willing to participate in the study and have signed an informed consent form.

Exclusion Criteria:

  1. Patients diagnosed with IPF.
  2. Patients without baseline chest HRCT.
  3. Patients who refuse to sign the informed consent form.
  4. Patients participating in other clinical trials for medications. (Patients who have completed other trials or are in an unblinded phase after a washout period of 2 weeks are eligible for enrollment.)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Chinese PPF Prospective Registry Cohort

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Absolute change in FVC (mL)
Time Frame: at 1-year and 2-year follow-up
Absolute change in FVC (mL) at 1-year and 2-year follow-up.
at 1-year and 2-year follow-up

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
CTD-ILD, HP, iNSIP, exposure-related ILD, sarcoidosis, unclassified ILD, and other ILDs
Time Frame: at baseline and after 2 years of follow-up
The percentage of patients with CTD-ILD, HP, iNSIP, exposure-related ILD, sarcoidosis, unclassified ILD, and other ILDs at baseline and following 2 years of follow-up.
at baseline and after 2 years of follow-up
The percentage of patients who meet at least two of the following three inclusion criteria for PPF
Time Frame: at baseline, 1-year, and 2-year follow-up

The percentage of patients who meet at least two of the following three inclusion criteria for PPF at baseline, 1-year, and 2-year follow-up:

  1. Worsening respiratory symptoms;
  2. Physiological evidence of disease progression (FVC decline >5% or DLCO
  3. Imaging evidence of disease progression (e.g., increased or worsened traction bronchiectasis, new ground-glass opacities with traction bronchiectasis, new reticular patterns, or new honeycombing).
at baseline, 1-year, and 2-year follow-up
The percentage of patients receiving treatment with corticosteroids, immunosuppressive agents, and antifibrotic drugs or PDE4B inhibitors
Time Frame: during the 2-year follow-up period
The percentage of patients receiving treatment with corticosteroids, immunosuppressive agents (including cyclophosphamide, mycophenolate mofetil, azathioprine, and other commonly used immunosuppressants for ILDs), and antifibrotic drugs (nintedanib, pirfenidone) or PDE4B inhibitors (e.g., nerandomilast) during the 2-year follow-up period.
during the 2-year follow-up period
Change in absolute DLCO of pulmonary function expressed as percent predicted
Time Frame: after 1 year and 2 years of follow-up
Change in absolute DLCO of pulmonary function expressed as percent predicted after 1 year and 2 years of follow-up.
after 1 year and 2 years of follow-up
Changes in the absolute score of the dyspnea severity questionnaire
Time Frame: at 1-year and 2-year follow-up
Changes in the absolute score of the dyspnea severity questionnaire at 1-year and 2-year follow-up.
at 1-year and 2-year follow-up
Changes in the absolute score of the Cough Severity Numerical Rating Scale (CNSRS)
Time Frame: at 1-year and 2-year follow-up
Changes in the absolute score of the Cough Severity Numerical Rating Scale (CNSRS) at 1-year and 2-year follow-up.
at 1-year and 2-year follow-up
Frequency of acute exacerbations of ILD
Time Frame: during the 2-year follow-up
Frequency of acute exacerbations of ILD during the 2-year follow-up.
during the 2-year follow-up
Time to first acute exacerbation
Time Frame: during the 2-year follow-up
Time to first acute exacerbation during the 2-year follow-up.
during the 2-year follow-up
The percentage of patients with acute exacerbations, lung transplantation, or death
Time Frame: at 2-year follow-up
The percentage of patients with acute exacerbations, lung transplantation, or death at 2-year follow-up.
at 2-year follow-up
The percentage of patients with ILD progression (FVC decline >10% of predicted value)
Time Frame: at 2-year follow-up
The percentage of patients with ILD progression (FVC decline >10% of predicted value) at 2-year follow-up
at 2-year follow-up

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Zuojun Xu

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Boehringer Ingelheim

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 23, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 31, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 31, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 25, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 1, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 6, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 6, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 1, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PROFINA

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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