ADAM9 and non-small cell lung carcinoma: Furthermore, sub-grouping by ADAM9 expression clearly revealed that the sub-group of ADAM9-high stage I NSCLC, having a 5-year survival rate of 56.9%, which is almost as low as the 5-year survival rate in patients with resected stage II NSCLC (3), should receive further treatment, such as adjuvant chemotherapy, in order to obtain an improved prognosis.