An Open-label, Phase I/II Study of the Pan-immunotherapy in Patients With Relapsed/Refractory Ovarian Cancer

Overview

Ovarian cancer is the most lethal gynecological cancer and the 5th leading cause of cancer death in women. Platinum chemotherapy has been widely adopted as a standard treatment for advanced ovarian cancer, the response rates in patients with relapsed/refractory ovarian cancer is unacceptably low. PD-1 blockade has been developed to a new class of cancer immunotherapy that could restore an adequate immunosurveillance against the neoplasm and enhance T-cell-mediated anticancer immune responses. Manganese has been confirmed to activate antigen-presenting cells and function as mucosal immunoadjuvants in pre-clinical studies. This two-arm, phase I/II study is designed to assess the safety and efficacy of combined therapy of anti-PD-1 antibody and chemotherapy with or without Manganese priming.

Full Title of Study: “A Phase I/II, Open-label, Two-arm, Single-center Study to Evaluate the Safety and Efficacy of the Pan-immunotherapy in Subjects With Relapsed/Refractory Ovarian Cancer”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Single (Participant)
  • Study Primary Completion Date: May 22, 2022

Interventions

  • Drug: Manganese Chloride
    • Administered by inhalation at 0.4mg/kg twice per week in the first 3-week cycle, and then inhaled 0.4mg/kg twice in the first week of each 3-week cycle thereafter
  • Drug: nab-paclitaxel
    • Administered intravenously, 180-220mg/m2 on day 2 in a 3-week cycle (day 1 without Manganese priming)
  • Drug: Platinum chemotherapy
    • Administered intravenously, Cisplatin (60-80mg/m2) or Carboplatin (area under the curve [AUC] 4-6 mg/mL per min) on day 2 in a 3-week cycle (day 1 without Manganese priming)
  • Drug: Sintilimab
    • Administered intravenously, 200mg on day 3 in a 3-week cycle (day 2 without Manganese priming)

Arms, Groups and Cohorts

  • Experimental: Manganese primed Sintilimab plus nPP chemotherapy
    • Subject received Manganese primed Sintilimab, nab-paclitaxel and platinum chemotherapy every 3 weeks until achieving a second assessable complete response or progressive disease, development of unacceptable toxicity, or withdrawal of consent.
  • Active Comparator: Sintilimab plus nPP chemotherapy
    • Subject received Sintilimab, nab-paclitaxel and platinum chemotherapy every 3 weeks until achieving a second assessable complete response or progressive disease, development of unacceptable toxicity, or withdrawal of consent.

Clinical Trial Outcome Measures

Primary Measures

  • Object response rate (ORR)
    • Time Frame: 24 months
    • ORR is defined as the proportion of subjects who achieved a partial response (PR) or complete response (CR) according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1
  • Number of Subjects with treatment-related adverse events (AEs)
    • Time Frame: 12 months
    • Incidence, nature, and severity of adverse events graded according to the NCI CTCAE v5.0. AEs were considered to be treatment-related if they had started or worsened within the interval from first study drug administration until the follow-up visit.

Secondary Measures

  • Disease control rate (DCR)
    • Time Frame: 12 months
    • DCR is defined as the proportion of subjects who achieved a stable disease (SD), partial response (PR) or complete response (CR) according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
  • Progression-free survival (PFS)
    • Time Frame: 12 months
    • PFS time was measured from study entry to the first documentation of disease progression or death. Disease progression was determined per the RECIST V1.1.
  • Overall survival (OS)
    • Time Frame: 24 months
    • OS time was measured from the study entry to the date of death.
  • Number of participants with laboratory test abnormalities
    • Time Frame: 12 months
    • The laboratory tests of serum cytokines and chemokines will be performed on day 1 and 3 of each cycle, and the abnormality will be determined by the investigator.

Participating in This Clinical Trial

Inclusion Criteria

1. Subjects must have histologically proven relapsed or refractory ovarian cancer (Refractory was defined as a lack of response to or progression during the frontline treatment; relapsed was defined as progression after the frontline treatment), including patients diagnosed with primary carcinoma of fallopian tube or peritoneum carcinoma. 2. Female. 3. ≥ 18 years old. 4. Life expectancy of at least 6 months. 5. Eastern Cooperative Oncology Group performance status 0-2. 6. Radiographic imaging (CT/MRI/PET-CT) indicated recurrence or metastasis; or cancer cells in ascites are positive; or CA125 concentration in the peripheral blood is more than 2 times the upper limit of normal value. 7. Subjects must have received at least two frontline therapies, at least one of which is platinum-containing. 8. Subjects with Anti-PD-1 antibody treatment history are eligible which must be resistance. 9. Adequate organ function. 10. Female participants of childbearing potential must be willing to use an adequate method of contraception for the course of the study through 120 days after the last dose of study drug. Exclusion Criteria:

1. Subjects with any autoimmune disease or history of syndrome that requires corticosteroids or immunosuppressive medications. 2. Serious uncontrolled medical disorders or active infections, pulmonary infection especially. 3. Prior organ allograft. 4. Women who are pregnant or breastfeeding. 5. Women with a positive pregnancy test on enrollment or prior to investigational product administration. 6. Subjects who are compulsorily detained for treatment of either a psychiatric or physical (eg, infectious disease) illness. 7. Subjects with previous or concurrent other malignancies.

Gender Eligibility: Female

Minimum Age: 18 Years

Maximum Age: 70 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Chinese PLA General Hospital
  • Provider of Information About this Clinical Study
    • Principal Investigator: Han weidong, Professor – Chinese PLA General Hospital

Clinical trials entries are delivered from the US National Institutes of Health and are not reviewed separately by this site. Please see the identifier information above for retrieving further details from the government database.

At TrialBulletin.com, we keep tabs on over 200,000 clinical trials in the US and abroad, using medical data supplied directly by the US National Institutes of Health. Please see the About and Contact page for details.