Compositions and methods for treating lymphoma, in particular, T-cell lymphoma and follicular lymphoma, in a human patient are provided. The methods entail administering to the patient an effective amount of cerdulatinib.本發明提供治療人類患者中之淋巴瘤,詳言之T細胞淋巴瘤及濾泡性淋巴瘤的組合物及方法。該等方法需要向該患者投與有效量之賽度替尼(cerdulatinib)。