Table 1.

Overview number of haplotype sequences per ABO group

ABO group	No. of haplotypes	Estimated allele frequencies in the Zurich region of Switzerland† (%)
ABO∗A1	39	17.41
ABO∗A2	21	9.16
ABO∗B	20	7.64
ABO∗O.01.01	27	40.95
ABO∗O.01.02	31	22.65
ABO∗O.02	16	2.11
Total	154	99.92

A complete list of study samples (n = 77) is given in supplemental Table 1. Details on sequenced ABO haplotypes (n = 154) including GenBank accession numbers are provided in supplemental Table 2.

^†Estimated ABO allele frequencies in the region of Zurich in Switzerland based on MALDI-TOF mass spectrometry genotyping data (see supplemental Information Section 1.3).