Study of Niraparib and TSR-042 in Recurrent Endometrial Cancer

  • End date
    Dec 23, 2023
  • participants needed
  • sponsor
    University Health Network, Toronto
Updated on 23 January 2021
measurable disease
platinum-based chemotherapy
recurrent endometrial cancer


This is a phase 2 study of investigational drug niraparib and TSR-042 in patients with advanced/recurrent endometrial cancer. The purpose of this study is to determine whether blocking a protein called poly (ADP-ribose) polymerase (PARP) with niraparib provides clinical benefit in patients with recurrent endometrial cancer, as well as to explore the possible impact of phosphatase and tensin homolog (PTEN) loss (loss of function of the PTEN gene) on blocking PARP with niraparib.


The purpose of this trial is to elucidate whether the PARP inhibition approach with niraparib, or the combination of niraparib and TSR-042, provides clinical benefit in patients with recurrent endometrial cancer.

The trial is designed as a multicenter, open-label, phase II study of niraparib in monotherapy or in combination with anti-PD1 inhibitor TSR-042 in recurrent endometrial cancer. Patients must have received prior platinum based chemotherapy.

The study will initially enroll patients with recurrent endometrial cancer to the niraparib monotherapy cohort not selected according to the PTEN status (cohort I).

Once the initial assessment with niraparib monotherapy is completed (inclusion of 22 evaluable patients),Additional 22 patients will be enrolled in the combination arm with niraparib and TSR-042 (cohort II).

Eligible participants will take niraparib capsules or tablets by mouth 300/200 mg, once a day, every day of every 21 day cycle.Participant will receive TSR-042 500 mg( intravenously) on the first day of each cycle for cycle 1 to 4. Followed by 1000 mg every 2 cycle for every 6 weeks for maximum of 2 yrs.

While receiving the study treatment, participants will be asked to visit the study site on Days 1, 8, 15 of Cycle 1.Cycle 2 onward Days 1 and 15 and future cycles for safety tests and procedures. If, at any time, participants develop (or is suspected to have developed) MDS/AML, a mandatory bone marrow aspirate/biopsy will be done for testing to confirm diagnosis.

When participants are taken off the study treatment permanently, they will be asked to return to the study site for an End of Study Treatment visit to have tests and procedures done for safety purposes.

Participants who are taken off the study treatment for any reason other than disease progression will continue to have radiological assessments every 8 weeks until disease progression. Participants will continue to be followed up for side effects weekly in the first 4 weeks, then monthly until resolution.

Condition Endometrial Carcinoma, Uterine Cancer, Endometrial Cancer
Treatment Niraparib, TSR-042
Clinical Study IdentifierNCT03016338
SponsorUniversity Health Network, Toronto
Last Modified on23 January 2021


Yes No Not Sure

Inclusion Criteria

Is your age greater than or equal to 18 yrs?
Are you female?
Do you have Endometrial Carcinoma?
Do you have any of these conditions: Uterine Cancer or Endometrial Carcinoma or Endometrial Cancer?
Histologically confirmed epithelial endometrial cancer. All histological subtypes are allowed except for endometrial sarcoma, carcinosarcoma, clear cell, mixed and adenosquamous tumors
Patients must have radiographic evidence of disease progression following the most recent line of treatment
Patients must have previously received at least one line of platinum-based chemotherapy. Prior hormonal and immunotherapy are allowed. There is no restriction on the total number prior lines of therapy
Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as 10 mm with CT scan, MRI, or calipers by clinical exam, and 15mm for nodal lesions. Areas of previous radiation may not serve as measurable disease unless there is evidence of progression post radiation
Patients must have archival tumor sample available for PTEN analysis. If archival tissue is not available, the patient will have the option to undergo tumor biopsy
Eastern Cooperative Group (ECOG) performance status 2
Life expectancy of greater than 12 weeks
Within 7 days of the proposed start of treatment, patients must have normal organ and marrow function
Participant receiving corticosteroids may continue as long as their dose is stable for at least 4 weeks prior to initiating protocol therapy
Patient must agree to not donate blood during the study or for 90 days after the last dose of study treatment

Exclusion Criteria

Chemotherapy or biologic agents received within 4 weeks of starting study treatment
Hormonal therapy within 2 weeks of starting study treatment
Pelvic radiotherapy (as treatment of primary disease) within 4 weeks, or palliative radiotherapy encompassing >20% of the bone marrow within 1 week of starting study treatment
Previous treatment with a PARP inhibitor, or any other targeted therapy directed against the homologous recombination pathway
Patients who are receiving any other investigational agents
Ongoing Grade 2 toxicities related to prior cancer therapy, with the exceptions of alopecia, neuropathy, lymphopenia and skin depigmentation
Received transfusion (platelets or red blood cells) 4 weeks of the first dose of study treatment
Major surgery within 4 weeks of registration or ongoing clinically significant post-surgical complications. Study biopsy is not considered major surgery
Known brain metastases, except if stable for greater than 28 days following definitive treatment. The patient must have no new or progressive signs or symptoms related to the CNS disease and must be either off or taking a stable dose of corticosteroids. A scan to confirm the absence of brain metastases is not required
History of myelodysplastic syndrome (MDS)/acute myeloid leukemia (AML)
History of bowel obstruction within 3 months, or other reason preventing effective oral administration of medication
Immunocompromised patients e.g. Human Immunodeficiency Virus (HIV) requiring treatment or active Hepatitis B or C. Prior splenectomy is allowed
Uncontrolled inter-current illness
History of other malignancy 3 years prior to registration with the exceptions of a) cone-biopsied in situ carcinoma of the cervix uteri; b) basal or squamous cell carcinoma of the skin. All second malignancies in this context should be discussed with the Principal Investigator
Previous treatment with anti PD-1, anti PD-L1, anti PD-L2, anti CTLA4 agents
History of fistula, or high-risk of developing a fistula
Diagnosis of immunodeficiency or systemic steroid therapy or other form of immunosuppressive therapy within 7 days prior to initiating the protocol therapy
Known history of human immunodeficiency virus (type 1 or 2 antibodies)
Known active hepatitis (e.g., hepatitis B surface antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis C virus [HCV] ribonucleic acid [qualitative] is detected)
Active autoimmune disease that has required systemic treatment in the past 2 years (ie, with use of disease-modifying agents, corticosteroids, or immunosuppressive drugs) Replacement therapy eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment
History of interstitial lung disease
Received a live vaccine within 14 days of initiating protocol therapy
History of Grade 3 immune-related AE with prior immunotherapy, with the exception of non-clinically significant lab abnormalities
Clear my responses

How to participate?

Step 1 Connect with a site
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Phone Email

Please verify that you are not a bot.

Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Browse trials for

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note