Considering mutations and copy number alterations together, TNK2 was somatically altered in 11.1% (5 of 45) of serous, 4.8% (1 of 21) of clear cell, 9.8% (4 of 41) of endometrioid, and 20% (1 of 5) of mixed histology tumors and DDR1 was somatically altered in 6.7% (3 of 45) of serous and 2.4% (1 of 41) of endometrioid tumors but not in clear cell or mixed histology tumors (Additional file 8). Here, DDR1 is linked to endometrioid tumor.