RUNX1 and rheumatoid arthritis: Moreover, aberrant expression of runt-related transcription factor 1 (RUNX1) has been implicated in defective regulation of sodium-hydrogen antiporter 3 regulator 1 (SLC9A3R1) and N-acetyltransferase 9 (NAT9) in both psoriasis and rheumatoid arthritis (151–153).