The present invention provides methods of treating or preventing autoimmune diseases with spiro 2,4-pyrimidinediamine compounds, as well as methods of treating, preventing or ameliorating symptoms associated with such diseases. Specific examples of autoimmune diseases that can be treated or prevented with the compounds include rheumatoid arthritis and/or its associated symptoms, systemic lupus erythematosis and/or its associated symptoms and multiple sclerosis and/or its associated symptoms.
                            本发明提供了使用螺环2,4-
嘧啶二胺化合物治疗或预防自身免疫性疾病的方法,以及治疗、预防或缓解与此类疾病相关症状的方法。可以使用该化合物治疗或预防的自身免疫性疾病的具体例子包括类风湿性关节炎及/或其相关症状、系统性红斑狼疮及/或其相关症状和多发性硬化及/或其相关症状。