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NCT Number: NCT05794659

Adjuvant Therapeutic Cancer Vaccine (AST-201, pUMVC3-hIGFBP-2) in Patients With Advanced Ovarian Cancer

The purpose of this phase 2 study is to assess the efficacy and safety for adjuvant therapeutic cancer vaccine AST-201 (pUMVC3-hIGFBP-2) in patients with newly diagnosed homologous-recombination proficient(HRP) advanced ovarian cancer (Stage III) after debulking surgery. Patients will receive AST-201 with rhuGM-CSF(Colony Stimulating Factor) or placebo with rhuGM-CSF in combination with standard adjuvant chemotherapy(Paclitaxel/Carboplatin).

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

University of Washington

Seattle, Washington, 98109, United States

Location contact

John B. Liao, MD, PhD

CONTACT

About this study

The study will comprise a screening period of -28 Days prior to initiation of study treatment (Day 1); an enrollment period of 24 months; the treatment duration will be approximately of 5 months.

The study will evaluate whether the addition of AST-201/rhuGM-CSF to the standard adjuvant chemotherapy will extend the Progression Free Survival(PFS) rate. Survival follow-up will be performed every 3 months (±14 days) after the End of treatment (EOT) visit for 2 years after randomization and every 6 months (±28 days) thereafter until disease progression or death from any cause or withdrawal of consent whichever comes first. Survival follow-up visits will be conducted by telephone, in-person visit, or chart review. The end of study (EOS) is defined as 2 years after the date of last patient enrollment.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Newly diagnosed stage III (FIGO classification) epithelial ovarian cancer including primary peritoneal cancer, fallopian-tube cancer
  • Has received upfront surgery and optimally debulked(a residual tumor less than 1 cm)
  • Can start adjuvant therapy within 6 weeks of debulking surgery
  • Has Homologous Recombination Proficiency (HRP) tumor defined by FDA-approved testing
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Demonstrates adequate organ function.

Exclusion criteria

  • Has a history of hypersensitivity or other contraindications to rhuGM-CSF
  • Has a history of active malignancy ≤5 years prior to first administration of investigational drug except for adequately treated non-melanoma skin cancer or epithelial carcinoma without evidence of disease
  • Is on immune suppression therapy or has a history of immune suppression therapy ≤4 weeks prior to the first administration of investigational drugs
  • Has active or prior autoimmune disease or inflammatory disease
  • Has active infectious disease including tuberculosis, hepatitis B, hepatitis C or human immunodeficiency virus (HIV) infection
  • Is pregnant or breastfeeding or expecting to conceive children within the projected duration of the study

Treatment and study plan

AST-201

Biological

i.d. (3-week interval, 3 cycles in total)

Other names: pUMVC3-hIGFBP-2 multi-epitope plasmid DNA vaccine

paclitaxel

Drug

3-week interval, 6 cycles in total

Other names: Taxol

carboplatin

Drug

3-week interval, 6 cycles in total

Other names: Paraplatin

Placebo

Drug

i.d. (3-week interval, 3 cycles in total)

Other names: Normal saline (USP)

rhuGM-CSF(Granulocyte-Macrophage Colony-Stimulating Factor)

Drug

i.d. (3-week interval, 3 cycles in total)

Other names: sargramostim, Leukine

Primary outcomes

  1. Progression-Free Survival (PFS)

    Time frame: overall study duration (approximately 48 months)

    the time from the date of randomization to disease progression, or death from any cause whichever occurs first

Secondary outcomes

  1. 2-year PFS rate

    Time frame: 24months from the first dose of AST-301 administration

    proportion of patients alive without disease progression or death at two years after the randomization

  2. Overall Survival (OS)

    Time frame: overall study duration (approximately 48 months)

    the time from the date of randomization to death from any cause

  3. AST-201 specific immunogenicity by Interferon gamma (IFN-gamma) enzyme-linked immunospot (ELISpot )

    Time frame: 17months

    AST-201 specific IFN-gamma ELISpot

  4. Number of participants with Adverse events as graded by the National Cancer Institute Common Terminology Criteria for Adverse Events [NCI CTCAE] version 5.0)

    Time frame: 5 months

    Adverse events (AEs) Treatment-emergent adverse events (TEAEs) Serious adverse events (SAEs) Vital signs Physical examination Eastern Cooperative Oncology Group (ECOG) performance status Electrocardiogram (ECG) test Laboratory tests

Study contacts

Contact information is provided by the study sponsor or research team.

Eunkyo Joung, MD, CMO

CONTACT

[email protected]

+82-2-2038-2347

Hyunwon Shin, MD, PhD

CONTACT

[email protected]

+82-2-2038-2347

Sponsors and collaborators

Lead sponsor

Aston Sci. Inc.

Industry

Registry information

Official study title

A Randomized Phase 2 Study to Evaluate the Efficacy and Safety for Adjuvant Therapeutic Cancer Vaccine (AST-201, pUMVC3-hIGFBP-2) in Patients With Advanced Ovarian Cancer (Cornerstone-004)

Acronym: Cornerstone4

Important dates

Study start
2023
Primary completion
2025
Study completion
2027
First posted
Apr 3, 2023
Registry last updated
Jul 20, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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