Abstract:
:Pulmonary pleomorphic carcinoma has been shown to respond remarkably to PD-1 inhibitors; however, the biomarkers for this therapy have not been fully proven. We report a case of pulmonary pleomorphic carcinoma with overexpressed PD-L1, in which a complete response to nivolumab was sustained for >14 months. Immunohistochemical analysis revealed few PD-1+ immune cells and regulatory T cells in the tumor, in addition to predominant infiltration of CD8+ cells and macrophages. Our findings suggest that the presence of a small number of PD-1+ immune cells and regulatory T cells should be investigated as candidate therapeutic biomarkers.
journal_name
Thorac Cancerjournal_title
Thoracic cancerauthors
Okamura K,Fukuda Y,Soda H,Ogawara D,Iwasaki K,Fuchi S,Suyama T,Yoshida M,Harada T,Fukuda M,Mukae Hdoi
10.1111/1759-7714.12557subject
Has Abstractpub_date
2018-01-01 00:00:00pages
193-196issue
1eissn
1759-7706issn
1759-7714journal_volume
9pub_type
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