NCT05407584

Brief Summary

This study is phase II, open label, clinical trial to determine the efficacy of Oregovomab and non-platinum chemotherapy in PARP inhibitor resistant ovarian, fallopian tube, or primary peritoneal cancer patients who were not suitable for platinum retreatment. Patients who have received one to three prior lines of chemotherapy are to be assigned to Cohort 1 (oregovamab 2 mg \[C1,2,3,5,7 for five doses\] + pegylated liposomal doxorubicin \[PLD\] 40 mg/m2 q4w, n=28), while patients who have received more than three prior lines of chemotherapy are to be assigned to Cohort 2 (oregovamab 2 mg \[C1,2,3,5,7 for five doses\] + weekly paclitaxel 80 mg/m2 \[D1,8,15 q4w\], n=28). A total of 56 patients will be recruited and treated with oregovomab + PLD / weekly paclitaxel until disease progression, unacceptable toxicity, or withdrawal of patient consent. The primary endpoint is objective response rate by RECIST 1.1.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
56

participants targeted

Target at P25-P50 for phase_2

Timeline
Completed

Started Jul 2022

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 1, 2022

Completed
6 days until next milestone

First Posted

Study publicly available on registry

June 7, 2022

Completed
28 days until next milestone

Study Start

First participant enrolled

July 5, 2022

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2024

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2024

Completed
Last Updated

May 24, 2023

Status Verified

May 1, 2023

Enrollment Period

1.8 years

First QC Date

June 1, 2022

Last Update Submit

May 22, 2023

Conditions

Keywords

PARP inhibitor Resistantplatinum resistant

Outcome Measures

Primary Outcomes (1)

  • Confirmed ORR

    based on radiographically confirmed response according to CR+PR rate based on RECIST v1.1 as determined by the investigator

    From date of enrollment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months

Secondary Outcomes (6)

  • progression-free survival

    Up to 1 years

  • Overall survival (OS)

    Up to 1 years

  • Time to first Subsequent Therapy

    The date of first documented first subsequent treatment or date of death, assessed up to 72 months

  • Time to Second Subsequent Therapy

    The date of first documented second subsequent treatment assessed up to 72 months

  • Duration of response

    Up to 1 years

  • +1 more secondary outcomes

Study Arms (2)

Cohort 1(1-3 prior line of chemotherapy)

EXPERIMENTAL

Oregovomab and PLD is synergistic in PARPi-resistant recurrent ovarian cancer.

Drug: Orevogomab+PLD

Cohort2 (>3prior line of chemotherapy)

EXPERIMENTAL

Oregovomab and Paclitaxel show synergistic in PARPi-resistant recurrent ovarian cancer.

Drug: Orevogomab+Paclitaxel

Interventions

PLD (40 mg / m2 IV over three hours in one day) to be repeated till progression or unacceptable toxicity every four weeks (28 days) Investigational agent (Oregovomab): 2 mg diluted in 50 mL saline for injection administered IV following PLD over approximately 20 (acceptable range 15-30) minutes for a total of 5 scheduled injections, one each at Cycle 1, Cycle 2, Cycle 3, Cycle 5, and Cycle 7

Cohort 1(1-3 prior line of chemotherapy)

paclitaxel (80 mg / m2 IV over three hours in one day) to be repeated till progression or unacceptable toxicity every four weeks on day 1, 8, 15 Investigational agent (Oregovomab): 2 mg diluted in 50 mL saline for injection administered IV following paclitaxel over approximately 20 (acceptable range 15-30) minutes for a total of 5 scheduled injections, one each at Cycle 1, Cycle 2, Cycle 3, Cycle 5, and Cycle 7

Cohort2 (>3prior line of chemotherapy)

Eligibility Criteria

Age20 Years+
Sexfemale(Gender-based eligibility)
Gender Eligibility Detailsfemale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adults 20 years old or older.
  • Subjects with histologically confirmed epithelial adenocarcinoma of ovarian, fallopian tube or peritoneal origin.
  • Eligible histologic epithelial cell types: high grade serous adenocarcinoma, high grade endometrioid adenocarcinoma, undifferentiated carcinoma, clear cell adenocarcinoma, mixed epithelial carcinoma, , and low-grade adenocarcinoma, or adenocarcinoma not otherwise specified (N.O.S.).
  • \[only up to 5 patients with non-high grade serous carcinoma will be included\]
  • Prior PARP inhibitor exposure (progressed through a prior PARP inhibitor)
  • CA-125 ≥ 50 U/ml
  • Prior platinum-based chemotherapy.
  • Cohort 1 : 1-3 prior lines of therapies / Cohort 2 : Previous treatments of the 4th line or more.
  • Not eligible for platinum re-treatment (prior allergic reaction or residual toxicity, patients who are not able to receive (in the physician's opinion) or willing to receive platinum treatment and platinum resistant patients)
  • Received prior bevacizumab or not eligible for bevacizumab due to medical.
  • Adequate bone marrow function:
  • Absolute neutrophil count (ANC) ≥ 1,500/μL
  • Platelets ≥ 100,000/μL
  • Hemoglobin ≥ 8.0 g/dL (Note: Blood transfusion is permitted up to 48 hours before first dose of study treatment).
  • Adequate liver function:
  • +7 more criteria

You may not qualify if:

  • Participant has mucinous, germ cell, or borderline tumor of the ovary.
  • Female subjects who are lactating and breastfeeding, or have a positive serum pregnancy test within 7 days prior to the first dose of study treatment.
  • Any serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the completion of treatment according to this protocol.
  • Active autoimmune disease, such as rheumatoid arthritis, systemic lupus erythematosus (SLE), ulcerative colitis, Crohn's Disease, multiple sclerosis (MS), or ankylosing spondylitis requiring active disease modifying treatment.
  • Known allergy to murine proteins or hypersensitivity to any of the excipients of the oregovomab and PLD.
  • Chronically treated with immunosuppressive drugs such as cyclosporine, adrenocorticotropic hormone (ACTH), etc.
  • Chronic therapeutic corticosteroid use, defined as \> 5 days of prednisone or equivalent, with the exception of inhalers or those on a pre-planned steroid taper.
  • Recognized acquired, hereditary, or congenital immunodeficiency disease, including cellular immunodeficiencies, hypogammaglobulinemia or dysgammaglobulinemia.
  • Clinically significant active infection(s) at the time of screening.
  • Any of the following conditions (on-study testing is not required):
  • Known HIV-infected subjects unless on effective anti-retroviral therapy with an undetectable viral load within 6 months, or
  • Known or suspected hepatitis C infection which has not been treated and cured unless currently on treatment with an undetectable viral load).
  • Uncontrolled or life-threatening diseases compromising safety evaluation.
  • Participant has a known additional malignancy that is progressing or has required active treatment within the past 2 years.
  • Note: Participants with basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or carcinoma in situ (e.g. breast carcinoma, cervical cancer in situ, endometrial carcinoma) that have undergone potentially curative therapy are not excluded.
  • +8 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Yonsei University Health System, Severance Hospital

Seoul, South Korea

RECRUITING

Related Publications (1)

  • Park J, Cho HW, Lim MC, Choi CH, Lee JY. OPERA: a phase II trial of oregovomab plus non-platinum chemotherapy in PARP inhibitor/platinum-resistant ovarian cancer. Future Oncol. 2024;20(26):1893-1899. doi: 10.1080/14796694.2024.2357533. Epub 2024 Jun 28.

Study Officials

  • Jung-Yun Lee

    Severance Hospital

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 1, 2022

First Posted

June 7, 2022

Study Start

July 5, 2022

Primary Completion

May 1, 2024

Study Completion

November 1, 2024

Last Updated

May 24, 2023

Record last verified: 2023-05

Data Sharing

IPD Sharing
Will not share

Locations