ERBB3 and serous adenocarcinoma: No significant differences were found for HER3-high scores at recurrence in any of the following: high-grade serous carcinomas vs. others (77.8% and 84.6%, respectively), platinum-sensitive recurrence vs. -resistant recurrence (79.3 and 81.8%, respectively), localized relapse vs. distant metastases (75.0 and 83.3%, respectively), and one type of prior therapy vs. two or more (78.5 and 83.3%, respectively; Additional file 7: Figure S2a–d).