MICB and rheumatoid arthritis: For example, MICB*004 allele is significantly associated with susceptibility to rheumatoid arthritis in Spanish Caucasians [3], MICB*005:02 allele is negatively associated with cervical cancer in the Thai population [4], and MICB*008 allele (designated as MICB*0106 allele in 2004) is positively associated with ulcerative colitis in the Han Chinese population of central China [5].