GSTM1 and plasmacytoma: The post-hoc analysis carried out using the Bonferroni test showed that there were significant differences between the median Hb values in MM type (median: 9.8; IQR: 7.9 - 11.4) ​​and median Hb levels in MZL (median: 12.5; IQR: 10.8 - 13.5); p<0.001, FL (median: 12.6; IQR: 11.9 - 13.7); p<0.001, CLL (median: 13.0; IQR: 11.8 - 14.4); p<0.001, and plasmacytoma (median: 14.2; IQR: 12.0 - 16.3); p<0.001.