Fig. 1.

Partial nucleotide sequences of ABO Exon 5 and flanking 5′ and 3′ intronic regions. The identified variation in Exon 5 (c.236‐239del) and Intron 5 (del 1‐20) in the ABO*A1‐like mut allele is shown. The deletion of nucleotides compared to the ABO*A1.01 Reference sequence (NG_006669.1) is indicated by hyphens. The numbering of nucleotides in Exon 5 refers to consecutive numbering according to the coding sequence (c.). Nucleotides of Intron 5 are numbered starting from the first base of the intron. Nt = Nucleotide.