The disclosure provides for antibodies that bind CD40, including a humanized antibody. The antibodies bind CD40 and do not exhibit CD40 agonist activity. The antibodies may comprise a modified IgG1 Fc domain, and exhibit minimal activation of immature dendritic cells. Compositions comprising antibodies, methods of use for treatment of diseases involving CD40 activity, and use in the preparation of a medicament for treatment of a disease involving CD40 activity are provided.本發明提供結合CD40之抗體,包括人類化抗體。該等抗體結合CD40且不顯示CD40促效劑活性。該等抗體可包含經修飾IgG1 Fc域,且顯示未成熟樹突狀細胞之最低活化。提供包含抗體之組合物,用於治療涉及CD40活性之疾病之方法,及在製備用於治療涉及CD40活性之疾病之藥物中之用途。