TNFRSF11B and histiocytic sarcoma: In the >50 year group, the genotype frequency of TNFRSF11B rs2073618 was 5.4% (CC), 63.3% (GG), and 31.3% (CG) in HS patients, 6.9% (CC), 51.7% (GG), and 41.4% (CG) in controls.