Factor H polymorphism, typing by isoelectrofocusing and immunoblotting: no association with rheumatoid arthritis

The genetic polymorphism of human factor H (beta 1H) was investigated by a combination of isoelectrofocusing and immunoblotting. This simple method is reliable and economical. The allelic frequencies in the Newfoundland population were estimated to be 0.597 and 0.403 for FH*1 and FH*2, respectively (129 individuals typed). No association of factor H types with rheumatoid arthritis was found (111 patients typed).