PDCD1LG2 and Guillain-Barre syndrome: The top five GBS susceptibility genes with the most association with drug targets were the following: Tumor Necrosis Factor (TNF, 15 interactions), Integrin Subunit Alpha X (ITGAX, nine interactions), Fc gamma receptor IIIa (FCGR3A, six interactions), 5′, 3′-nucleotidase, cytosolic (NT5C, five interactions), and PDCD1LG2 (five interactions).