This study is for women with ovarian or peritoneal cancer. The purpose of the study is to see if we can lower the chance of ovarian or peritoneal cancer growing or spreading with a hormonal drug used either by itself or by adding it to the usual combination of chemotherapy drugs.

This study is for women with endometrial cancer. The purpose is to find out if adding a new immunotherapy drug to the usual combination of chemotherapy drugs can lower the chance of your endometrial cancer growing or spreading.

The purpose of this study is to determine if adding the investigational drugs (TSR-042 and Niraparib) to Standard Of Care delays or prevents ovarian cancer recurrence (prevents the ovarian cancer from coming back). Once eligibility is determined, participants will begin with one of two treatment periods. Also, there is a chance that participants will receive the placebo(s), which would not provide benefit. The first treatment period is the chemotherapy treatment period, and the second one is the maintenance treatment period. It is not known how long participation in this study may last.
The Sponsor and Study Doctors cannot and do not guarantee or promise that participants will receive any benefits from this study. There is a chance by taking the study drug participants cancer may not return or the return of cancer may be delayed. It is not known whether participants would benefit from the Study Drug. Also, there is a chance that participants will receive the placebo(s), which would not provide benefit. Therefore, participants may not get any direct benefit from taking part in this study. However, what is learned in this study may help in the treatment of ovarian cancer for women around the world and may advance scientific knowledge.

This study is for women who have ovarian cancer, fallopian tube cancer or primary peritoneal cancer which has grown or recurred. The purpose of this study is to compare any good and bad effects of adding Atezolizumab to the usual chemotherapy (liposomal doxorubicin) and to the usual chemotherapy with bevacizumab. Atezolizumab is a PD-L1 inhibitor that may allow the immune system to recognize and destroy tumor cells.

The purpose of this study is to determine if environmental toxin exposure differs in African American women as compared to White women with endometrial cancer and to evaluate the relationship between demographic variables and toxin level.

This study is for adult women who have advanced or recurrent endometrial (uterine) cancer. The purpose is to find out if the drug combination of paclitaxel, carboplatin and metformin works better than paclitaxel and carboplatin alone in treating uterine cancer.