B2M and classic Hodgkin lymphoma: To confirm the previous results and to search for more potential biomarkers, Camus et al. prospectively analyzed cfDNA samples of 60 cHL patients (and 30 matched biopsies) using an NGS panel of 9 genes: NFKBIE, TNFAIP3, STAT6, PTPN1, B2M, XPO1, ITPKB, GNA13, and SOCS1 [57].