A Clinical Study of PD-L1 Antibody ZKAB001(Drug Code) in Recurrent or Metastatic Cervical Cancer

  • days left to enroll
  • participants needed
  • sponsor
    Lee's Pharmaceutical Limited
Updated on 14 February 2022
monoclonal antibodies
measurable disease
adjuvant therapy
metastatic cervical cancer


This is a Phase 1, open-label, dose-escalation, and multidose study, aiming to investigate the safety, tolerability and pharmacokinetics(PK) of ZKAB001 (a fully human monoclonal antibody targeting the Programmed Death - Ligand 1 (PD-L1) membrane receptor on T lymphocytes and other cells of the immune system) administered every 14 days in subjects with recurrent or metastatic cervical cancer.


The study will consist of 4 periods: Screening (up to 28 days), Lead-in period (Day -28), Treatment (up to 24 cycles or 1 year, whichever occurs first), and Follow-up (up to 1 year). There will be a lead-in period on Day -28 for each dose escalation cohort in which the single-dose pharmacokinetics of ZKAB001 will be characterized prior to initiation of continuous dosing in the first cycle of treatment. The lead-in period duration, PK time-points, doses and/or regimens used in subsequent cohorts may be modified based on the exposure (AUC) observed during the lead-in period (although the number of PK samples will not be increased). Treatment of continuous dosing is up to 24 cycles or 1 year, until as per investigator's opinion, subjects experience disease progression (evaluated by RECIST 1.1 and immune-related response criteria irRECIST), no clinical benefit, or intolerable toxicity. If investigators suspect subjects experience pseudoprogression or has evidence to prove "mixed response", subjects can continue to accept treatment as investigator decided.

The study was divided into two stages. After the recommended phase II dose (RP2D) is determined in the first stage, the sample size will be amplified with RP2D in the second stage. When a total of 15 cases are included in the two stages, an interim analysis will be conducted to decide whether to expand the total number of cases to 60 based on the results of the analysis. If more than 2 cases of response will be observed in 15 cervical cancer subjects, 45 cases (with a total sample size of 60 cases) could be included to further observe the safety and efficacy.

Condition Cervical Cancer
Treatment ZKAB001 5mg/kg, ZKAB001 10mg/kg, ZKAB001 15mg/kg
Clinical Study IdentifierNCT03676959
SponsorLee's Pharmaceutical Limited
Last Modified on14 February 2022


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Inclusion Criteria

The subject voluntarily gives written informed consent to participate in the study
Female subjects aged18 years
Recurrent or metastatic cervical cancer was diagnosed by histopathology or cytology and received first-line platinum-containing regimens that failed or could not be tolerated. The definition of first-line failure: progress during adjuvant therapy or within 6 months after the end of treatment, and the first progress after palliative treatment
Based on RECIST1.1, imaging evaluation confirmed that there was at least one measurable disease
Eastern Cooperative Oncology GroupECOG performance status of 0 or 1, with estimated life expectancy of at least 3 months
Adequate blood routine, hepatic and renal function
Absolute neutrophil countANC109/L 2) Platelets 100x109/L 3) Hemoglobin 9g/dL 4) Serum albumin 2.8g/dL 5) Bilirubin 1.5x Upper limit of normalULN 6) ALT and AST 1.5xULN, if If liver metastases are present, alanine transaminaseALT and aspartate transaminaseAST should be 5xULN 7) Creatinine clearance rate 50ml/min (Cockcroft-Gault equation) 7.Female reproductive subjects should take effective contraception during the study period and within 3 months after the study treatment period. The serum or urine human chorionic gonadotropin HCGexamination must be negative within 7 days before the subject is enrolled

Exclusion Criteria

There are known active or suspected autoimmune diseases. Those who are in a stable state and do not need systemic immunosuppressive therapy can be included
Patients are using immunosuppressive agents, or systemic, or absorbable topical corticosteroid medications to achieve immunosuppressive purposes (doses >10mg/day prednisone or equivalent), which is ongoing 2 weeks before enrollment
Have received any form of organ transplantation, including allogeneic stem cell transplantation
Known allergy to macromolecular protein inhibitors or any of the components of ZKAB001
Suffering from other malignant tumors other than this diseases in 5 years except for skin basal cell and squamous cell carcinoma
Central nervous system metastases with clinical symptoms (such as cerebral edema and brain metastases requiring corticosteroid intervention). Previous treatment with brain or meningeal metastasis, such as clinical stabilization (MRI) less than 2 months, or systemic corticosteroid (dose >10mg/day prednisone or equivalent) less than 2 weeks
Patients with clinical symptoms or diseases of the heart that cannot be well controlled, such as heart failure above New York Heart Association ( NYHA ) 2 grade, unstable angina pectoris, myocardial infarction in 1 year, and clinically significant supraventricular or ventricular arrhythmia requiring treatment or intervention, have left ventricular ejection fraction < 50% at rest in the ultrasound cardiogram
Patients who had received radiotherapy, chemotherapy, surgery or molecular targeted therapy before, were given less than 4 weeks
Within 14 days before the first use of the drug, any active infection requiring systematic anti-infective treatment
Human immunodeficiency virus (HIV) positive, untreated active hepatitis (hepatitis B surface antigen positive and peripheral blood HBV-DNA titer 500IU/ml or positive copy number detected by the research center; hepatitis C virus antibody positive)
There is a history of active pulmonary tuberculosis within 1 year before entering the group
The patient is participating in other clinical studies or is less than 1 month away from the end of the previous clinical study
Patients may need to receive other systemic cancer treatment during study period
Prior therapy with an anti-PD 1, anti-PD L1, or anti-CTLA-4 (Cytotoxic T lymphocyte Antigen-4) antibody (or any other agents that target immunoregulatory receptor)
Received blood transfusion and hematopoietic stimulating factors, such as colony stimulating factor, erythropoietin, thrombopoietin, etc., within 14 days before screening
History of mental drug abuse, alcohol abuse or drug abuse
Pregnant or lactating women
Subjects who received live vaccine within 4 weeks before screening
Any mental condition that prevents the understanding or provision of an informed consent
It is determined by the investigator that the patient has other factors that may lead to the termination of the study, such as other serious diseases or serious laboratory test abnormalities or other factors that may affect the safety of the patients, family or social factors that may affect the study data and sample collection
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