Biomarker Guided Treatment in Gynaecological Cancer

Lymphadenectomy in the pelvis and para-aortic, will, for patients who are considered otherwise low risk (endometrioid tumours grade 1 or 2, or grade 3 with <50% myometrial infiltration (MI), with no sign of extrauterine disease), be dependent on the preoperative hormone receptor status (ER and PR).

Patients will be defined low risk when endometrioid, grade 1 or 2, or grade 3 with <50% MI, AND positive hormone receptor status for both ER AND PR. These patients will not undergo lymphadenectomy.

Patients with endometrioid tumours grade 1 or 2, or grade 3 <50% MI,, with either negative ER or PR status, are defined high risk and will undergo pelvic and para-aortic lymphadenectomy as part of their surgical procedure.

Patients will receive routine clinical follow-up for 5 years. Follow-up data will be collected for the study, focusing on survival and recurrence of disease. All patients will, as part of the study fill out validated quality of life questionnaires (QoL) at follow-up.

A 5mm tissue biopsy will be analysed for stathmin level in the recurrence as well as urine and a second 5mm biopsy on termination of study participation. The second biopsy could help explain why patients have stopped responding to the treatment. Determination of stathmin level both from the tissue and the urine will take place at the pathology department. Stathmin serves as an integrated biomarker, which enables a central biomarker analysis at Haukeland university hospital. Stathmin level is defined as high with an immunohistochemical score 9 (max score). All other scores are considered low. Pre-treatment all patients undergo CT or MRI, maximum 1 month prior to treatment start.

During treatment, urine and bloods will be collected every treatment cycle (weekly basis). Imaging will take place every 8 treatment cycles. Treatment will continue until disease progression.