Md. Varney et al., MOLECULAR TYPING AND HAPLOTYPIC ASSOCIATIONS OF HLA-B-ASTERISK-44 SUBTYPES, European journal of immunogenetics, 22(2), 1995, pp. 215-220
The heterogeneity of HLA-B44 is confirmed and the sequence difference
between the two major subtypes, B4402,*4403, is attributed to one pol
ymorphic site in the third exon. A method is described to discriminate
B4402 and B*4403, and the occurrence and linkage disequilibrium of B
44 subtypes is discussed. No example of B*4401 polymorphism in exon 2
was observed.