The present invention relates to humanized antibodies that specifically bind a polypeptide comprising peptide-6 as denoted by SEQ ID NO. 15, that is an HSP65 derived peptide. More specifically, the invention relates to humanized anti-peptide-6 antibodies, compositions, methods and uses thereof for the treatment of immune-related disorders, specifically, inflammatory disorders such as arthritis, IBD, psoriasis, diabetes and MS. The invention further provides combined compositions and kit combining the humanized antibodies of the invention and at least one anti-inflammatory agent, as well as uses of the humanized antibodies in diagnostic kits and methods.