Immunohistochemical staining for programmed cell-death ligand 1 (PD-L1) in malignant thymoma and thymic carcinoma. Alexei Shimanovsky, Richard Cartun, Mary Fiel-Gan, Daniza Mandich, Jonathan Earle, Andrew L. Salner… Abstract e20003 Background: Recent development of anti-PD-1/L1 antibodies has demonstrated activity in various neoplasms. Thymic malignancies (TMS) are rare and treatment in advanced disease is limited. To evaluate […]