The invention relates to an antibody or fragment thereof and the use of the antibody in a method of treatment and/or diagnosis. The antibody or fragment thereof specifically binds to alpha-synuclein, including monomeric, oligomeric and fibril forms of alpha-synuclein; is not cross reactive with beta-synuclein or gamma-synuclein; specifically binds human, rat and mouse alpha-synuclein; binds nitrated, oxidized and phosphorylated forms of alpha-synuclein; and binds an epitope of human alpha synuclein comprising the sequence MPSEEGYQDYEPEA (SEQ ID NO:2). The method for diagnosing a neurodegenerative disease associated with alpha-synuclein or for detecting alpha-synuclein, comprises adding the antibody or fragment thereof to a biological sample from a subject, and detecting the presence or absence of a complex formed between alpha-synuclein and the antibody or fragment.
Alpha-Synuclein Antibodies (7A11)