Dick et al (2010) [36] provided evidence for the involvement of 23 genes (NTSR2, TRIB2, PPM1G, MEM01, HAAO, MTIF2, CCDC139, EHBP1, BUB1, TTL, CKAP2L, MGAT5, ARHGAP15, KIAA1189, COBLLI, FAM130A2, LPR2, CHN1, PRKRA, PPP1R1C, LOC402117, IL8RA, FARP2) on chromosome 2 in alcohol dependence. This evidence concerns the gene PPP1R1C and alcohol dependence.