In the group of SLE patients, SLAM was correlated with the percentage of neutrophils, lymphocytes and macrophages in BALF (r = 0.44, p = 0.009; r = 0.54, p = 0.001; r = −0.52, p = 0.002, respectively). The gene discussed is SLAMF1; the disease is systemic lupus erythematosus.