Journal: Oncology Letters
Article Title: Recurrent microsatellite instability-high thymic carcinoma showing complete response to immune checkpoint inhibitor: A case report
doi: 10.3892/ol.2026.15474
Figure Lengend Snippet: Negative immunohistochemical findings of the anterior mediastinal tumor. Tumor cells were negative for (A) CD5, (B) C-kit, (C) TTF-1, (D) CEA and (E) MART-1. TTF-1, thyroid transcription factor-1; CEA, carcinoembryonic antigen; MART-1, melanoma antigen recognized by T cells.
Article Snippet: The following primary antibodies were applied at 36°C for 32–40 min: cytokeratin (cat. no. NCL-L; clone AE1/AE3, Leica, 1:100), p63 (cat. no. NCL-L; clone 7-Jul, Leica, 1:20), c-kit (cat. no. NCL-L-CD117-32; clone EP10, Leica, 1:20), CD5 (cat. no. NCL-L-CD5-4C7; clone 4C7, Leica, 1:200), TTF-1 (cat. no. CMQ 343M-96-RUO; clone 8G7G3/1, Cell Marque, 1:100), CEA (cat. no. 413121; clone COL-1; Nichirei, 1:100), and MART-1 (cat. no. 413381; clone M2-7C10, Nichirei, 1:10).
Techniques: Immunohistochemical staining