IGFBP-2 Vaccine to Prevent Ovarian Cancer Progression in Patients With Serologic Detection of Recurrence

A Phase II Study of (IGFBP-2) Vaccine to Prevent Progression After Serologic Detection of Recurrent Ovarian Cancer

This phase II trial studies how well giving the insulin-like growth factor binding protein 2 [pUMVC3-hIGFBP-2 multi-epitope plasmid deoxyribonucleic acid (DNA) (IGFBP-2)] vaccine after one dose of carboplatin works to stop ovarian cancer from growing, spreading, or getting worse (progressing) in patients whose cancer recurrence is detected only in the blood (serologic detection) following treatment with platinum chemotherapy. IGFBP-2 is a protein found in ovarian cancer cells. The IGFBP-2 vaccine may help the body build an effective immune response to kill tumor cells. Carboplatin is in a class of medications known as platinum-containing compounds. It has been shown to activate parts of the immune system that may act against tumors. Giving the IGFBP-2 vaccine after a single dose of carboplatin may be an effective way to stop ovarian cancer from progressing in patients with serologic detection following treatment with platinum chemotherapy.

Study Overview

• Status: Not yet recruiting
• Conditions: Fallopian Tube Carcinoma; Ovarian Carcinoma; Primary Peritoneal Carcinoma
• Intervention / Treatment: Drug: Carboplatin; Procedure: Magnetic Resonance Imaging; Procedure: Computed Tomography; Procedure: Biospecimen Collection; Biological: pUMVC3-hIGFBP-2 Multi-epitope Plasmid DNA Vaccine

Detailed Description

OUTLINE:

Patients receive a single dose of carboplatin intravenously (IV) per standard of care on day -3 or -2 prior to cycle 1. Patients then receive IGFBP-2 vaccine intradermally on day 1 of each cycle. Cycles repeat every 4 weeks for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Patients who complete the original vaccine series may be eligible for up to an additional 3 IGFBP-2 vaccines, after another dose of carboplatin, 18 months after first vaccination. Additionally, patients undergo blood sample collection, computed tomography (CT), and/or magnetic resonance imaging (MRI) throughout the study.

After completion of study treatment, patients are followed up at 4 weeks, every 4 weeks for 1 year, and then every 6 months for 2 years.

• Study Type: Interventional
• Enrollment (Estimated): 26
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: CVI Coordinators; Phone Number: 1-866-932-8588; Email: cvitrial@uw.edu

Study Locations

• United States
  • Washington
    • Seattle, Washington, United States, 98109
      • Fred Hutch/University of Washington Cancer Consortium
      • Contact: CVI Coordinators; Phone Number: 866-932-8588; Email: cvitrial@uw.edu
      • Principal Investigator: John Liao, MD, PhD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Have a diagnosis of ovarian, fallopian tube, or primary peritoneal cancer who have received systemic chemotherapy including platinum-based chemotherapy
• Have a cancer antigen 125 (CA-125) that normalized after first-line therapy
• CA-125 increased to more than twice the upper limit of normal or two times the nadir value after most recent second or later line of treatment
• Have no measurable disease based on Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. Ascites and pleural effusions are not measurable disease, if asymptomatic
• All patients who are having sex that can lead to pregnancy must agree to contraception for the duration of the study (end of one year follow up). Note: Acceptable methods of contraception are condoms with contraceptive foam, oral, implantable or injectable contraceptives, contraceptive patch, intrauterine device, diaphragm with spermicidal gel, or a sexual partner who is surgically sterilized or postmenopausal
• Have estimated life expectancy of at least 3 months
• Be willing and able to provide written informed consent/assent for the trial
• Be ≥ 18 years of age on day of signing informed consent
• Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) performance scale
• White blood cell (WBC) ≥ 3000/mm^3 (performed within 14 days of treatment initiation)
• Hemoglobin (Hgb) ≥ 10 g/dl (performed within 14 days of treatment initiation)
• Hematocrit (Hct) ≥ 28% (performed within 14 days of treatment initiation)
• Serum creatinine ≤ 2.0 mg/dl or creatinine clearance > 60 mL/min (performed within 14 days of treatment initiation)
• Total bilirubin ≤ 2.5 mg/dl (performed within 14 days of treatment initiation)
• Aspartate aminotransferase (AST) ≤ 3 times upper limit of normal (ULN) (performed within 14 days of treatment initiation)
• Blood glucose < 1.5 ULN (performed within 14 days of treatment initiation)

Exclusion Criteria:

• Is currently participating and receiving study therapy or has participated in a study of an investigational agent and received study therapy within 4 weeks of the first dose of treatment (i.e., day 1)

• Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy (if dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment

  • Short-term administration of systemic steroids (i.e., for allergic reactions or the management of immune-related adverse events [irAEs]) is allowed
• Has symptomatic ascites or pleural effusions
• History of borderline or low malignant potential ovarian cancer
• Has had a prior anti-cancer monoclonal antibody (mAb) within 4 weeks prior to study day 1 or who has not recovered (i.e., ≤ grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier

• Has had prior chemotherapy, biologic therapy, targeted small molecule therapy, hormonal therapy, or radiation therapy within 2 weeks prior to study day 1 or who has not recovered (i.e., ≤ grade 1 or at baseline) from adverse events due to a previously administered agent

  • Note: Patients with ≤ grade 2 neuropathy are an exception to this criterion and may qualify for the study
  • Note: If a patient received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy
• Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer
• Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Patients with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least 4 weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids for at least 14 days prior to trial treatment. This exception does not include carcinomatous meningitis which is excluded regardless of clinical stability
• Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment
• Has an active infection requiring systemic therapy
• Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the patient's participation for the full duration of the trial, or is not in the best interest of the patient to participate, in the opinion of the treating investigator
• Is pregnant or breastfeeding, or expecting to conceive children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment
• Clinically significant cardiovascular disease
• Known severe hypersensitivity reactions to carboplatin ≥ grade 3, any history of anaphylaxis, or uncontrolled asthma
• Patients with any contraindication to receiving recombinant human granulocyte macrophage-colony stimulating factor (rhuGM-CSF) based products
• Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies)
• Has known active hepatitis B (e.g., hepatitis B virus surface antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis c virus [HCV] ribonucleic acid [RNA] [qualitative] is detected)

• Has received a live vaccine or live-attenuated vaccine within 30 days of planned start of study therapy. Administration of killed vaccines is allowed

  • Note: Seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however intranasal influenza vaccines (e.g., Flu-Mist®) are live attenuated vaccines, and are not allowed

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Treatment (carboplatin, IGFBP-2 vaccine); Patients receive a single dose carboplatin IV per standard of care on day -3 or -2 of cycle 1. Patients then receive IGFBP-2 vaccine intradermally on day 1 of each cycle. Cycles repeat every 4 weeks for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Patients who complete the original vaccine series may be eligible for up to an additional 3 IGFBP-2 vaccines, after another dose of carboplatin, 18 months after first vaccination. Additionally, patients undergo blood sample collection, CT, and/or MRI throughout the study.

Drug: Carboplatin; Given IV; Other Names: Blastocarb; Carboplat; Carboplatin Hexal; Carboplatino; Carboplatinum; Carbosin; Carbosol; Carbotec; CBDCA; Displata; Ercar; JM-8; Nealorin; Novoplatinum; Paraplatin; Paraplatin AQ; Paraplatine; Platinwas; Ribocarbo; JM8; Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Magnetic Resonance Imaging (MRI); sMRI; Magnetic resonance imaging (procedure); MRIs; Structural MRI; Procedure: Computed Tomography; Undergo CT; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Computerized axial tomography (procedure); Computerized Tomography (CT) scan; Diagnostic CAT Scan; Diagnostic CAT Scan Service Type; Procedure: Biospecimen Collection; Undergo blood sample collection; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Biological: pUMVC3-hIGFBP-2 Multi-epitope Plasmid DNA Vaccine; Given intradermally; Other Names: IGFBP-2 plasmid-based DNA vaccine; IGFBP-2 vaccine

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Progression free survival	Will compare the progression free survival based on radiographic imaging at 6 months to historical control rates for this population of patients treated by letrozole or tamoxifen. The comparison of the observed rate of progression free survival at 6 months to the benchmark rate will be conducted by Fisher's exact test. The Kaplan-Meier survival curve will be plotted and the median progression free survival will be compared to the historical progression free survival with Greenwood confidence interval.	At 6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Radiographic recurrence rate	The comparison of the observed radiographic recurrence rate to the benchmark rate will be conducted by Fisher's exact test.	At 6 months
Predictive value of insulin-like growth factor-binding protein 2 (IGFBP-2) positivity toward the rate of progression free survival	IGFBP-2 expression will be evaluated by approved laboratory assays. Positivity will be defined by elevation above normal reference range per laboratory. The predictive value of IGFBP-2 positivity toward the rate of progression free survival at 6 months will be evaluated by odds ratios computed by logistic regression, first individually and then combined as four strata. Will test the association of individual marker, the combined two marker panel, and the interaction between the two markers.	At baseline, 4 weeks post-last vaccine, and 6 months post-first vaccine
T-cell response and IGFBP-2 accuracy of predicting clinical response	Will evaluate whether adding T-cell response to IGFBP-2 will increase the accuracy of predicting clinical response by comparing the fitness between the two models (one with T-cell response and the other one without T-cell response). Receiver operating characteristic curve and area under the curve (AUC) will be evaluated for different panels of markers and the incremental value of adding a particular marker to AUC performance will be assessed.	At baseline, 4 weeks post-last vaccine, and 6 months post-first vaccine

Collaborators and Investigators

• Sponsor: University of Washington
• Collaborators: The Wayne D. Kuni and Joan E. Kuni Foundation
• Investigators: Principal Investigator: John Liao, MD, PhD, Fred Hutch/University of Washington Cancer Consortium

Study record dates

Study Major Dates

• Study Start (Estimated): July 1, 2026
• Primary Completion (Estimated): September 29, 2027
• Study Completion (Estimated): September 30, 2028

Study Registration Dates

• First Submitted: March 20, 2026
• First Submitted That Met QC Criteria: March 20, 2026
• First Posted (Actual): March 27, 2026

Study Record Updates

• Last Update Posted (Actual): May 26, 2026
• Last Update Submitted That Met QC Criteria: May 22, 2026
• Last Verified: March 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Urogenital Diseases; Genital Diseases; Endocrine System Diseases; Urogenital Neoplasms; Neoplasms by Site; Neoplasms; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Genital Diseases, Female; Endocrine Gland Neoplasms; Ovarian Diseases; Adnexal Diseases; Genital Neoplasms, Female; Gonadal Disorders; Fallopian Tube Diseases; Ovarian Neoplasms; Fallopian Tube Neoplasms; Organic Chemicals; Investigative Techniques; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Coordination Complexes; Chemistry Techniques, Analytical; Spectrum Analysis; Carboplatin; Specimen Handling; Magnetic Resonance Spectroscopy
• Other Study ID Numbers: RG1125984; NCI-2026-01282 (Registry Identifier: CTRP (Clinical Trial Reporting Program)); 0021167 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No