PSMA6 and rheumatoid arthritis: Our drug prediction results provide several drugs, including Doxazosin, an alpha-1 antagonist with a wide range of applications in anti-tumour and hypertension; XEN 103 and AY_9944 are less well studied and the mechanism of action is unknown; Montelukast belongs to the leukotriene receptor antagonist (LTRA) class of drugs and is used to treat asthma; IB-Meca is an anti-inflammatory drug used to treat patients with rheumatoid arthritis.