An Open-label Single Arm Phase II Trial of Niraparib in Combination With Anti-PD1 Programmed Cell Death Protein 1 Antibody in Recurrent/ Advanced Stage Endometrial Cancer Patients

  • End date
    Jun 1, 2023
  • participants needed
  • sponsor
    Sun Yat-sen University
Updated on 2 September 2021


Endometrial carcinoma is the most common malignancy of the female reproductive tract. Most cases are diagnosed at an early stage due to the appearance of symptoms such as postmenopausal bleeding. However, endometrial carcinoma carries a poor prognosis when it recurs after previous definitive treatment or when diagnosed at an advanced stage.The 5-year survival rate for FIGO III is approximately 57-66% and for FIGO IV is approximately 10-20%.The combination of PARPpoly adenosine diphosphate-ribose polymeraseinhibitors and PD1/PD-L1 has the theoretical support of preclinical molecular biology. In recent years, a large number of basic studies and preclinical models have confirmed that this combination therapy has superimposed or even synergistic effects on multiple levels.This study intends to explore the efficacy and safety of anti-PD-1 antibody combined with niraparib in the treatment of recurrent or advanced endometrial cancer.


This study is an open, multi-center, prospective single-arm Phase II study to study the effectiveness of niraparib combined with sintilimab in the treatment of recurrent/advanced endometrial cancer that has failed or cannot be tolerated by chemotherapy Sex and safety. The study intends to enroll 37 patients who have undergone histopathologically confirmed recurrence/advanced endometrial cancer who have experienced first-line and above chemotherapy failure or intolerance and received niraparib combined with sintilimab for treatment. The Simon two-stage design is used to estimate the sample size. For the first type of error, the value of (one-sided) is 0.05, the value of is 0.2, the test power is 0.8, and the ORR of the second-line chemotherapeutic drug is 15%. It is assumed that the objective population of niraparib combined with sintilimab in the treatment of the target subject population The remission rate was 35%. Nine cases were enrolled in the first stage. When the number of effective cases was 1, the combination therapy was considered to be no better than the single drug, and the trial was terminated. Otherwise, continue with the enrollment of 25 cases in the second stage. Assuming a loss rate of 10%, 37 subjects are expected to be enrolled in the trial.

Condition Recurrent/ Advanced Stage Endometrial Cancer Patients
Treatment Niraparib in Combination With Anti-PD1 Antibody
Clinical Study IdentifierNCT04885413
SponsorSun Yat-sen University
Last Modified on2 September 2021


Yes No Not Sure

Inclusion Criteria

The subject understands the trial process, signs an informed consent form, and agrees to participate in the research
18-70 years of age and female
Histologically confirmed endometrial epithelial carcinoma (including endometrioid adenocarcinoma, clear cell carcinoma, serous adenocarcinoma, dedifferentiated/undifferentiated endometrioid carcinoma), carcinosarcoma (excluding specific types of endometrial epithelial carcinoma such as small-cell neuroendocrine carcinoma), and excluding uterine sarcoma
Recurrence or advanced endometrial cancer that is not suitable for local treatment. At least first-line chemotherapy has failed or is intolerantIncluding the following
Patients with recurrent endometrial cancer have received at least first-line chemotherapy for recurrence, and imaging studies suggest disease progression during or after treatment
Advanced endometrial cancer (FIGO Stage III-IV) that has received neoadjuvant chemotherapy/adjuvant chemotherapy or radical concurrent radiotherapy and chemotherapy, disease progression during first-line chemotherapy or recurrence within 6 months of the end of first-line treatment
Patients with recurrent endometrial cancer cannot tolerate first-line chemotherapy
At least one measurable lesion by RECIST1.1 on CT
Subjects provide formalin-fixed and paraffin-embedded tumor tissue samples for pathological consultation
ECOG performance status 0-1
Life expectancy 16 weeks
Good organ function, including
Neutrophil count 1500/L (no growth factor support treatment within 7 days of the start of the study treatment)
Platelets 100,000/L (Do not accept platelet transfusion and any form of platelet-increasing treatment within 2 weeks of the start of the study)
Hemoglobin 90g/L (transfusion should not be received within 2 weeks from the beginning of study treatment, and EPO should be required for support treatment within 7 days)
Serum creatinine 1.5 times the upper limit of normal, or creatinine clearance 60mL/min (according to the Cockcroft-Gault formula)
Total bilirubin 1.5 times the upper limit of normal or direct bilirubin 1.0 times the upper limit of normal
AST and ALT 2.5 times the upper limit of normal, liver metastasis must be 5 times the upper limit of normal
Urinary protein (+), or 24-hour urine protein quantification is less than 1g
Thyroid-stimulating hormone (TSH) 1xULN (if abnormal, also examine FT3, FT4, if normal, it can be included in the group)
Plasma cortisol 1xULN
International normalized ratio (INR) and activated partial thromboplastin time1.5ULN (unless anticoagulant therapy is being used due to disease)
The adverse effects of any previous treatment have returned to CTCAE grade 1 or baseline, except for symptomatically stable sensory neuropathy or hair loss CTCAE grade 2, except for anemia
Previous hormonal or immunotherapy was permitted
Women of reproductive age who had a negative pregnancy test at the time of enrolment and who committed to use adequate and effective contraception or abstinence for the period from the beginning to the end of the study and for a period of 3 months after the last administration of the study medication were eligible for enrolment

Exclusion Criteria

Prior receipt of any PARP inhibitor
Patients with other invasive cancers other than endometrial cancer within the first 5 years of enrollment, excluding complete treatment of various cancers in situ within 2 years, such as squamous cell skin cancer, breast cancer, etc
The last systemic or radical antitumor therapy, including radiotherapy, chemotherapy, and targeted therapy (small molecule targeted therapy is within 2 weeks before the first administration), immunotherapy, and palliative radiation therapy for symptom control, was completed at least 2 weeks before the first administration
Received Chinese patent medicines or Chinese herbal medicines or immunomodulatory drugs (thymus, interferon, interleukin, etc.) with anti-tumor effects 2 weeks before enrollment
Have undergone major surgery within 4 weeks before the start of the study or are expected to undergo major surgery during the study period, or any surgical effects that have not yet recovered after the surgery
Symptomatic, uncontrolled brain metastases or neumomeningeal metastases without the need for radiographic confirmation;Patients with spinal cord compression may still be considered if they received targeted treatment and have evidence of clinically stable > for at least 28 days (controlled CNS metastases must have been treated with treatment such as radiation or chemotherapy at least 1 month prior to study entry;Patients should not develop new symptoms associated with central nervous system lesions or symptoms indicative of disease progression, and patients should either take a steady dose of hormones or do not need hormones.)
Uncontrollable pleural and ascites
Any active autoimmune disease or a history of autoimmune diseases (including but not limited to: autoimmune hepatitis, interstitial pneumonia, enteritis, hepatitis, nephritis, the pituitary gland inflammation, vasculitis, uveitis, or need to accept the system of sex hormone therapy and/or immunosuppressive therapy in patients with asthma (such as the need of bronchodilator), except the following:In the last 2 years without systematic treatment vitiligo, alopecia, Graves disease, psoriasis or eczema, stable immune thyroiditis controlled with treatment, type I diabetes requiring only stable insulin, childhood asthma has been completely remission
Immunosuppressant or systemic hormonal therapy (>10mg/ d or other equivalent hormonal preparation) was being used for immunosuppressive purposes and continued to be used 2 weeks before enrollment. Topical and systemic use not exceeding >10mg/ d or other equivalent hormonal preparation was permitted
With active bleeding (need) researchers to evaluate bleeding caused by tumor, with bleeding tendency or bleeding risk (such as tumor involving the great vessels, important bronchus, unable to control the obvious bleeding after hemostatic treatment, not cured bronchiectasis), or blood coagulation function apparently unusual, is treated with thrombolysis and anticoagulation (including need long-term antiplatelet therapy)
Thrombosis or embolism events in the past 6 months, such as cerebral vascular accident (including transient ischemic attack), pulmonary embolism
Severe cardiovascular disease or medical history includes but not limited to the
NYHA (New York Heart Association) grade 3 and 4 congestive heart failure within 6 months before enrollment
Suffered from unstable angina or newly diagnosed angina or myocardial infarction within 12 months before screening
Arrhythmia requiring therapeutic intervention (Patients taking -blockers or digoxin can be included in the group)
Valvular heart disease with CTCAE2
Poorly controlled hypertension (systolic blood pressure> 150 mmHg or diastolic blood pressure> 100 mmHg
Patients with moderate or above pulmonary dysfunction that cannot be relieved, interstitial pulmonary disease or active pulmonary tuberculosis
Patients with active ulcers, intestinal perforation, unmitigated intestinal obstruction, and a history of gastrointestinal perforation during the 28 days prior to study enrollment
Active inflammatory bowel disease, uncontrollable nausea and vomiting, inability to swallow study medication, any gastrointestinal disease that may interfere with drug absorption and metabolism
Active infections such as human immunodeficiency virus, syphilis, untreated active hepatitis (HBV DNA copy number greater than 1000IU/ml, HCV RNA positive), etc
Severe infection occurred 4 weeks before first administration
Other serious or uncontrolled diseases
Have received live vaccine or live attenuated vaccine 30 days before the first administration
People who are known to be allergic to active or inactive ingredients of the study drug or a drug with a similar chemical structure;Patients who are pregnant or breastfeeding, or who are expected to become pregnant during the study treatment period
Other laboratory abnormalities
Uncorrectable hyponatremia (sodium <130 mmol/L; serum potassium <3.5 mmol/L)
Any prior or current disease, treatment, or laboratory abnormality that may interfere with the results of the study and affect the patient's full participation in the study, or that the investigator considers the patient unsuitable for participation in the study
Any situation that the investigator deems unsuitable for participation, including poor understanding and coordination
Clear my responses

How to participate?

Step 1 Connect with a study center
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



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


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