Patent No. 599438 Disclosed is a humanized antibody that binds to human IL-22RA which comprises: a) a heavy chain variable domain comprising H-CDR1 , H-CDR2, and H-CDR3 consisting of amino acid sequences AEYMN, EINPSTGTTTYNQKFK and FDAYFDY, respectively; and b) a light chain variable domain comprising L-CDR1 , L-CDR2, and L-CDR3 consisting of amino acid sequences KSSQSLLYSSNQKNTL, WASSRES and QQYYSYPFT, respectively.