sentence: Also , unlike ALK-positive NSCLC , where the partner fusion gene is mostly EML4 , many partners have been identified for ROS1 , including FIG , SLC34A2 , CD74 , TPM3 , SDC4 , EZR , LRIG3 , KDELR2 , CLTC , LIMA1 , MSN , TMEM106B , and CCDC6 [ 21 , 28 – 31 ] .