PDCD1 and rheumatoid arthritis: Primary Biliary Cholangitis (Darlay et al., 2018), Systemic Lupus Erythematosus (Molineros et al., 2019), Rheumatoid Arthritis (Raychaudhuri et al., 2012), Hyperthyroidism (Sakaue et al., 2021), Monocyte Count (Sakaue et al., 2021), Serum Creatinine (Sakaue et al., 2021), Psoriasis (Zhou et al., 2016), Plasma Protein Levels of CD1C, CX3CL1, IL12B, LIPF, LTA, MICB, PDCD1, RGMA, SGSH, SLAMF7, TNFRSF8 (Krishna et al., 2024)