An objective of JIPS Registry is to examine disease behavior of idiopathic interstitial pneumonias (IIPs), considering classification, background, and diagnostic methods based on American Thoracic Society (ATS)/ European Respiratory Society(ERS) /Japanese Respiratory Society (JRS)/ Latin American Thoracic Association (ALAT) guidelines for diagnosis and the ATS/ERS classification of 2002 and 2013.

JIPS Registry is a multi-site, non-interventional, prospective observation study of patients with newly diagnosed IIPs in Japan. At least 600 patients will be registered for 16 months at approximately 80 sites in Japan.

Primary research question is to determine the natural history of each category of IIPs at registration, patient background and diagnosis methods will be considered. Furthermore, the present treatment patterns and disease behavior (CT and forced vital capacity (FVC) changes, as well as changes in interstitial pneumonia markers, etc.) will also be investigated.

Inclusion Criteria:

1. Patients aged between 20 and 84 years
2. Patients with idiopathic pulmonary fibrosis (IPF) and other IIPs diagnosis within 6 months before registration at each facility
3. Patients from whom written informed consent has been obtained regarding participation in this study and follow-up observation

Exclusion Criteria:

1. Patients for whom the tests (such as the lung function test) conducted in this study could not be performed
2. Patients who underwent pulmonary resection
3. Patients undergoing dialysis
4. Patients with cancer treated at the time of registration or those planning to receive treatment in the future

Newly diagnosed IIPs within 6 months before registration