Quan Huang's team found that miR‐30a can target RUNX2 to inhibit the osteolysis in GCTB.11 And, Ingrid Herr's research proved that miR‐127 and miR‐376a can act as tumor suppressors through the silence of COA1 and PDIA6 in GCTB.12 Nonetheless, few researches on microarrays conducted in GCTB have been launched. The gene discussed is RUNX2; the disease is neoplasm.