The present invention relates to an antibody or antigen-binding fragment thereof to TIGIT (T cell Immunoreceptor with Ig and Tyrosine-Based Inhibitory Motif Domains), a nucleic acid encoding the same, a vector comprising the nucleic acid, a cell transformed with the vector, the antibody or It relates to a method for producing an antigen-binding fragment thereof, a composition for preventing or treating cancer, and a composition for concurrent administration comprising the same.
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