Lower CD146 expression was found in sarcoma (i.e., U-2OS, NX: 17.9), breast cancer (i.e., EFO-21, NX: 10.7) and very low level in colon cancer (i.e., CACO-2, NX: 1.9) and lung cancer (i.e., SCLC-21H, NX 1.4; A569, NX:0.5). Here, MCAM is linked to small cell lung carcinoma.