We therefore extended our analysis of TNK2 and DDR1 to sequence the remaining coding exons from the 40 tumors in the discovery screen and to sequence all coding exons of TNK2 and DDR1 from another 72 primary endometrial tumors consisting of 10 clear cell, 21 serous, and 41 endometrioid tumors. This evidence concerns the gene DDR1 and endometrioid tumor.