| CPC A61K 31/7068 (2013.01) [A61K 31/337 (2013.01); A61K 31/655 (2013.01); A61K 31/675 (2013.01); A61K 39/3955 (2013.01); A61P 35/00 (2018.01); A61P 35/02 (2018.01)] | 3 Claims | 
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               1. A method for treating a tumor-related disease, comprising administering a synergistic pharmaceutical composition, comprising 
              (i) azvudine or a pharmaceutically acceptable salt, a stereoisomer or an isotopic derivative thereof; and 
                (ii) cyclophosphamide, 
              to a subject in need thereof; wherein the tumor-related disease is selected from the group consisting of malignant lymphoma, and leukemia. 
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