The representation of TRBV6-4-TRBJ2-2, TRBV20-1-TRBJ1-1 and TRBV15-TRBJ2-6 combinations was in addition, more common in the MAIT TCRβ clonotypes of PV patients (Fig. 2F), while the TRBV6-3-TRBJ2-3 and TRBV6-2-TRBJ2-7 gene associations were more prevalent in the MAIT TCRβ repertoires of healthy subjects (Fig. 2G), but none were significantly different in healthy vs. PV repertoire comparison (Fig. 2E). This evidence concerns the gene TRBV15 and acquired polycythemia vera.