MATAO trial for newly diagnosed Ovarian Cancer

MATAO-A clinical phase III trial on the use of letrozole maintenance therapy for newly diagnosed advanced ovarian, fallopian tube or peritoneal cancers.

In Switzerland, every year, around 800 women are diagnosed with ovarian, fallopian tube or peritoneal cancer. The prognosis of patients with advanced ovarian/tubal/peritoneal cancer is poor with over 70% of patients diagnosed with progression within 3 years of initial diagnosis and a 5-year overall survival rate reported varying from 30% till up to 50%, emphasizing the clear unmet medical need for new treatment modalities. A high percentage of the epithelial ovarian cancers express Estrogen Receptor (ER), an ideal target for endocrine therapy. Letrozole, in this respect, has been used for over decade now to treat Estrogen Receptor positive breast cancer and preliminary results demonstrate it can be a potent drug for patients with heavily pre-treated ovarian cancer as well. However, it has not been evaluated for its use in the maintenance setting for ovarian cancer after standard of care till now. The MATAO trial aims to evaluate the use of letrozole in the maintenance setting as additional standard of care for ovarian cancer patients.

MATAO- MAintenance Therapy with Aromatase inhibitor in epithelial Ovarian cancer: a randomized double-blinded placebo-controlled multi-center phase III Trial including LOGOS (LOw Grade Ovarian cancer Sub-study) (ENGOT-ov54/Swiss-GO-2)

For patients, specific criteria have to be fulfilled to participate in this trial. If a participation is possible, the patient have a 50 % chance on receiving a well know medication, which can prolong progression free survival after initial treatment. In addition, their quality of life and personal resilience (ability to manage crises) will be monitored. With a participation in a clinical trial, a participant supports the research and enables that other patients can benefit from new scientific findings.

This trial has been developed and initiated by the Swiss GO Trial Group, who functions as the lead sponsor in this respect and is supported by the German and Austrian Foundations for gynecological cancers, AGO and AGO-Austria, and is carried as part of the European study group on gynecological cancers (ENGOT):  https://engot.esgo.org/clinical-trials.

Recruitement:

As of 9th of July 2024, 537 patients had been recruited and 293 randomized into the trial!