Randomized Controlled Trial of CAN-2409 Immunotherapy During Active Surveillance for Prostate Cancer (ULYSSES)
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT02768363 |
Recruitment Status :
Active, not recruiting
First Posted : May 11, 2016
Last Update Posted : May 10, 2023
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Prostate Cancer | Biological: aglatimagene besadenovec Biological: placebo Drug: valacyclovir | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 187 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Randomized Controlled Trial Of AdV-tk + Valacyclovir Administered During Active Surveillance For Newly Diagnosed Prostate Cancer |
Study Start Date : | May 2016 |
Estimated Primary Completion Date : | December 2024 |

Arm | Intervention/treatment |
---|---|
Active Comparator: CAN-2409
Patients randomized to the active arm will receive two courses of aglatimagene besadenovec (CAN-2409) + valacyclovir
|
Biological: aglatimagene besadenovec
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:
Drug: valacyclovir Oral prodrug to be given for 14 days starting the day after each aglatimagene besadenovec or placebo injection. |
Placebo Comparator: Placebo
Patients randomized to the placebo arm will receive two corresponding courses of placebo + valacyclovir
|
Biological: placebo
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. Drug: valacyclovir Oral prodrug to be given for 14 days starting the day after each aglatimagene besadenovec or placebo injection. |
- Progression-free survival [ Time Frame: Once all subjects have completed at least 3 years following randomization ]
- Biochemical response (change in PSA) [ Time Frame: Assessed at each visit at 3, 6, 9 and 12 months then at least yearly ]
- Patient reported Health Related Quality of Life [ Time Frame: Assessed at each visit at 3, 6, 9 and 12 months ]
- Time to radical treatment [ Time Frame: 5 years ]
- The safety profile will be characterized by collection of adverse event information and laboratory values during the treatment phase. [ Time Frame: Assessed at each visit at 3, 6, 9 and 12 months ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Male |
Accepts Healthy Volunteers: | No |
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

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02768363

Responsible Party: | Candel Therapeutics, Inc. |
ClinicalTrials.gov Identifier: | NCT02768363 |
Other Study ID Numbers: |
PrTK04 |
First Posted: | May 11, 2016 Key Record Dates |
Last Update Posted: | May 10, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Immunotherapy Tumor vaccine Immuno-oncology |
Cytotoxicity Prostate cancer Active Surveillance |
Prostatic Neoplasms Genital Neoplasms, Male Urogenital Neoplasms Neoplasms by Site Neoplasms Genital Diseases, Male Genital Diseases |
Urogenital Diseases Prostatic Diseases Male Urogenital Diseases Valacyclovir Antiviral Agents Anti-Infective Agents |