FCGR3B and sarcoidosis: In concordance with high expression of FcγRIIIb and higher clearance of ICs in our patients with chronic Stage IV than in earlier stages of sarcoidosis, the increased copy number of FCGR3B gene was found to correspond with elevated FcγRIIIb presence on neutrophils, increased uptake of immune complexes in serum and higher extravasation of neutrophils into tissues to clear deposited ICs [10,16,30].