A reshaped human antibody to the human IL-6R, comprising: (A) an L chain
comprising, (1) a human L chain C region, and (2) an L chain V region
comprising human L chain framework regions (FRs), and mouse L chain
complementary determination regions (CDRs) of a momoclonal antibody to
the IL-6 receptor (IL-6R); and (B) an H chain comprising, (1) a human
H chain C region, and (2) an H chain V region comprising human H chain
FRS, and mouse H chain CDRs of a monoclonal antibody to the IL-6R.
Since major portion of the reshaped human antibody is derived from a
human antibody and the mouse CDRs which are less immunogenic, the present
reshaped human antibody is less immunogenic to human, and therefor is
promised for therapeutic uses.