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Active, Not Recruiting

NCT Number: NCT02768363

Randomized Controlled Trial of CAN-2409 Immunotherapy During Active Surveillance for Prostate Cancer (ULYSSES)

The purpose of this study is to evaluate the effectiveness of CAN-2409 immunotherapy in patients undergoing active surveillance for localized prostate cancer. CAN-2409 involves the use of aglatimagene besadenovec to kill tumor cells and stimulate a cancer vaccine effect. Killing tumor cells in an immune stimulatory environment induces the body's immune system to detect and destroy cancer cells. CAN-2409 has been well tolerated in previous trials in patients with prostate cancer and other tumor types. Biochemical, pathologic and immune responses have been demonstrated in newly diagnosed and recurrent prostate cancer. The hypothesis is that CAN-2409 can lead to improvement in the clinical outcome for patients with prostate cancer. Participants will be randomized to the CAN-2409 or control arm at a 2:1 ratio. Both arms receive standard of care active surveillance evaluations.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Prostate Cancer Genital Diseases Genital Diseases, Male Genital Neoplasms, Male Male Urogenital Diseases Neoplasms Neoplasms by Site Prostatic Diseases Prostatic Neoplasms Urogenital Diseases Urogenital Neoplasms

Age range

18 year and older

Sex eligibility

Male

Study type

Interventional

Phase

Phase 2

Primary location

Instituto Nacional de Ciencias Medicas y Nutrición, Salvador Subirán, Mexico City, Mexico

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Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

include:

  • Histologically confirmed adenocarcinoma of the prostate
  • Patients choosing active surveillance
  • Patients meeting definition of NCCN low risk, intermediate risk OR patients having only one NCCN high-risk feature
  • NCCN Low Risk is defined as having all of the following: PSA < 10 ng/ml, Gleason ≤ 6, T1-T2a
  • NCCN Intermediate Risk is defined as having at least one of the following and no high risk features: PSA 10-20 ng/ml, Gleason score =7, T2b-T2c
  • High Risk with a single high risk feature is defined as having only one of the following: PSA>20 ng/ml, Gleason score 8-10, or T3a
  • Excluded are those in the following risk groups: High risk with more than 1 high risk factor; Locally advanced/very high risk=T3b-T4; Metastatic: N1 or M1
  • Patients must be planning and medically able to tolerate multiple transrectal ultrasound guided injections.
  • ECOG Performance status 0-2

Exclusion criteria

include:

  • Active liver disease, including known cirrhosis or active hepatitis
  • Patients on systemic corticosteroids (>10 mg prednisone per day) or other immunosuppressive drugs
  • Known HIV+ patients
  • Regional lymph node involvement or distant metastases
  • Other current malignancy (except squamous or basal cell skin cancers)
  • Other serious co-morbid illness or compromised organ function that, in the opinion of the investigator, would interfere with treatment or follow up
  • Prior treatment for prostate cancer except TURP. If prior TURP, patients must be deemed able to receive prostate biopsy and multiple intra-prostatic injections by the investigator
  • Patients taking 5-alpha-reductase inhibitors (e.g. finasteride, dutasteride)
  • Patients who had or plan to use ADT or have history of an orchiectomy.
  • Patients who are planning to undergo radical treatment for prostate cancer within 12 months.
  • Known sensitivity or allergic reactions to acyclovir or valacyclovir

Treatment and study plan

Aglatimagene besadenovec

Biological

Aglatimagene besadenovec will be delivered to the prostate via trans-rectal ultrasound guided injection followed by 14 days of oral prodrug, valacyclovir. The second aglatimagene besadenovec injection will be 2-3 weeks after the first followed by 14 days of valacyclovir.

Other names: AdV-tk, CAN-2409

Placebo

Biological

Placebo will be delivered to the prostate via trans-rectal ultrasound guided injection followed by 14 days of oral prodrug, valacyclovir. The second placebo injection will be 2-3 weeks after the first followed by 14 days of valacyclovir.

Valacyclovir

Drug

Oral prodrug to be given for 14 days starting the day after each aglatimagene besadenovec or placebo injection.

Primary outcomes

  1. Progression-free survival (PFS)

    Time frame: Baseline to study completion, approximately 5 years

    Progression-free survival is defined as the time from randomization to evidence of histological disease progression or death due to prostate cancer

Secondary outcomes

  1. Negative biopsy rate at 1-year landmark

    Time frame: 1 year

  2. Percentage of patients with adverse events

    Time frame: 30 days after last dose of study drug

Sponsors and collaborators

Lead sponsor

Candel Therapeutics, Inc.

Industry

Registry information

Official study title

A Randomized Controlled Trial Of AdV-tk + Valacyclovir Administered During Active Surveillance For Newly Diagnosed Prostate Cancer

Important dates

Study start
2016
Primary completion
2024
Study completion
2026
First posted
May 11, 2016
Registry last updated
Jul 30, 2025

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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