For example, Fan et al found that ADAM9 may act as a prognostic marker in lower‐grade gliomas22; Kossmann et al suggested that the high expression level of ADAM9 may indicate poor prognosis in lung adenocarcinoma.23 However, the potential roles of ADAM9 in OC have not yet been discussed. The gene discussed is ADAM9; the disease is lung adenocarcinoma.