Evidence map›Paper›PMID 42439920›Full record

ArticleSurgery today2026

Fibroblast activation protein expression in fibrotic foci is a prognostic marker of fibrotic changes in lung tissue after surgical treatment for cancer.

Toru Kimura, Keiichiro Honma, Katsuyuki Nakanishi, Tomohiro Maniwa, Yasushi Shintani, Jiro Okami

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Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Toru KimuraDepartment of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan. kimura@thoracic.med.osaka-u.ac.jp.
Keiichiro HonmaDepartment of Pathology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan.
Katsuyuki NakanishiDepartment of Diagnostic and Interventional Radiology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan.
Tomohiro ManiwaDepartment of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan.
Yasushi ShintaniDepartment of General Thoracic Surgery, The University of Osaka Graduate School of Medicine, 2-2 (L5), Yamadaoka, Suita-city, 565- 0871, Osaka, Japan.
Jiro OkamiDepartment of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe investigated whether fibroblastic foci (FF) and fibroblast activation protein (FAP) expression in background fibrotic lung tissue are associated with the postoperative outcomes.

methodsBackground lung specimens with histologically confirmed fibrosis were obtained from 38 patients who underwent curative resection for primary lung cancer (2014 and 2018). The FF and FAP expressions were assessed using histology and immunohistochemistry. Overall survival (OS) was defined as the time from surgery to death from any cause and it was analyzed using Kaplan-Meier and Cox regression models. A Fine-Gray proportional subdistribution hazards model was used to evaluate the association between FAP expression in FF and respiratory events, treating lung cancer-related death as a competing risk.

resultsFifteen patients had a high FAP expression, while a low expression was observed in 23 patients. The baseline characteristics and pulmonary function were comparable between the groups. Multiple FF were more common in patients with a high FAP expression. A high FAP expression and honeycombing independently predicted a worse OS. A Fine-Gray analysis demonstrated that a high FAP expression in FF was significantly associated with an increased risk of respiratory events.

conclusionAn elevated FAP expression in FF is associated with a poorer respiratory-specific prognosis after lung cancer surgery in patients with coexisting pulmonary fibrosis, suggesting its potential utility for risk stratification and clinical management.

Indexed as

Fibroblast activation proteinInterstitial lung diseasesNon-small-cell lung cancer

Identifiers

PMID42439920

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