Compared with 6 normal human liver samples, liver samples from 6 children with BA demonstrated lower expression of the MAN1A2 exon 6–7 junction (2.4-fold, p = 0.006, Figure 1B) and exon 10 (2.2-fold, p = 0.009, Supplementary Table 5) with reverse transcription quantitative PCR. This evidence concerns the gene MAN1A2 and breast angiosarcoma.