The presented work examined the expression of five circRNA molecules created on the DNA template of the ADAMTS6 (hsa_circ_0004418, hsa_circ_0072676), ADAMTS9 (hsa_circ_0066444) and ADAMTS12 (hsa_circ_0006624, hsa_circ_0072119) genes from the lung tissue of NSCLC patients; it also assessed the expression of its host genes. The gene discussed is ADAMTS12; the disease is non-small cell lung carcinoma.