The main functions of the aforementioned genes are to increase the proliferation of pre-adipocytes (PID1)26; to be involved in probable guanine nucleotide exchange factor (RGL1)27; and to act as a scavenger receptor for acetylated low-density lipoprotein, bind to both gram-positive and gram-negative bacteria, and to play a role in the defence against bacterial infection (STAB1)28. This evidence concerns the gene PID1 and bacterial infectious disease.