NGFR and alcohol dependence: The lymphocyte mRNA levels of p75NTR (t = −1.305, P = 0.227, Student’s t-test; Fig. 1a) and sortilin (t = −1.394, P = 0.176, Student’s t-test; Fig. 1b) were not statistically different from those in the alcohol dependence group (n = 28) compared to the control group (n = 46).