IKZF3 and myeloid sarcoma: Contrary to that, the transcript of the haplotype containing the MS risk allele at rs907091 in IKZF3, showed consistently higher expression level in all MS samples (Fig. 1b), whereas the transcript of the haplotype containing the MS risk allele at rs11609 in IQGAP1 was higher in the majority (90 %) of MS samples (Fig. 1c).