In the earlier comparative linkage mapping of bone-related genes in the pig, the <i>Gamma glutamyl transferase 1 (GGT1)</i> gene was assigned between <i>SWC6</i> and <i>SWR84</i> on SSC14, and <i>Insulin-like growth factor binding protein 5 (IGFBP5)</i> gene was mapped between <i>SW120</i> and <i>SW936</i> on SSC15 (ONTERU et al. 2008). QTL related to average backfat and 10th rib backfat traits had been reported around these regions (<a href="http://http://www.animalgenome.org/cgi-bin/QTLdb" target="_blank">http://www.animalgenome.org/cgi-bin/QTLdb</a>, ROHRER et al. 1998, DE KONING et al. 2001, MALEK et al. 2001). Both genes did not have association with any of body conformation, feet and leg structure traits (FAN et al. 2009), but it is worth exploring whether they are associated with fatness. Here we carried out association analyses of the identified SNPs from the genes in two pig populations and investigated the possible effect of them on fat deposition traits.