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Updated: Jun 16, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
[Interstitial lung disease and lung cancer]
Nobuhisa Ishikawa1, Nobuoki Kohno
1Department of Molecular and Internal Medicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
Interstitial lung diseases (ILDs), particularly idiopathic pulmonary fibrosis (IPF), increase lung cancer risk. The KL-6 marker, used for ILD and lung cancer, shows potential for prognosis and therapeutic targeting.
Area of Science:
- Pulmonary Medicine
- Oncology
- Immunology
Context:
- Interstitial lung diseases (ILDs) encompass over 200 conditions, including idiopathic pulmonary fibrosis (IPF), the most common and aggressive form.
- ILDs, especially IPF, are linked to an increased risk of developing lung cancer due to chronic inflammation and impaired tissue repair.
- The KL-6 glycoprotein (MUC1) is a known marker for interstitial pneumonia and lung adenocarcinoma.
Purpose:
- To explore the link between ILDs and lung cancer pathogenesis.
- To investigate the role of the KL-6 marker and its auto-antibodies in ILDs and lung cancer.
- To assess the therapeutic potential of anti-KL-6 monoclonal antibodies (mAbs).
Summary:
- ILDs, characterized by inflammation and aberrant repair, may promote genetic errors leading to lung cancer.
- KL-6, a tumor-associated antigen, is a sensitive marker for ILDs and shows potential as a lung cancer marker.
- Natural auto-antibodies against KL-6 correlate with good prognoses in non-small cell lung cancer patients and anti-KL-6 mAbs exhibit anti-cancer activity.
Impact:
- This research highlights the complex relationship between ILDs and lung cancer, suggesting shared underlying mechanisms.
- KL-6 and its auto-antibodies may serve as valuable biomarkers for early detection, prognosis, and therapeutic monitoring in both ILDs and lung cancer.
- Anti-KL-6 mAb-mediated immune modulation offers a potential therapeutic strategy for lung cancer, particularly in the context of ILDs.
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