Consequently, this group proved the relationship between oligoarthritis and polyarthritis RF-negative by sharing common genetic susceptibility loci, including C12orf30 (rs17696736), C3orf1, and CD80 at chr3q13 (rs4688011), JMJD1C (rs6479891, rs12411988, and rs10995450) [78]. Here, NAA25 is linked to polyarticular arthritis.