As we have previously shown, in the blood of patients with sarcoidosis, there is an overrepresentation of monocytes possessing all three classical classes of Fcγ receptors (FcγRI—CD64, FcγRII—CD32, and FcγRIII—CD16) and a decrease of these cells with CR1 (CD35) and CR4 (CD11c) [13]. Here, CR1 is linked to sarcoidosis.