The Properdin Factor B Variant (BF SO45) First Detected in the Japanese Population

Abstract

The rare properdin factor B variant type (BF SO45) was first detected in the Japanese population using high voltage agarose gel electrophoresis and immuno-fixation. The propositus was a 75-year-old man living in Yamanashi Prefecture. The family study confirmed the genetic transmission of the BF*SO45 allele. BF*SO45 is the fifth rare BF variant allele found in Japanese.