B2M and B-cell chronic lymphocytic leukemia: The correlation analysis showed no relationship between B2M levels and naïve B cells (r = -0.22, p = 0.515), marginal zone B cells (r = -0.28, p = 0.396), class switched memory B cells (r = 0.03, p = 0.940), class unswitched memory B cells (r= -0.08, p = 0.812) in patients with CLL (Fig. 3).