Safety Study of a Disrupted Adenovirus (Ad) Serotype Cocaine Vaccine for Cocaine-dependent Individuals

NCT ID: NCT02455479

Last Updated: 2025-10-23

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE1
• Total Enrollment: 150 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-06-26
• Study Completion Date: 2027-12-31

Brief Summary

The purpose of this study is to assess the safety and preliminary efficacy of an anti-cocaine vaccine called dAd5GNE in cocaine-dependent individuals. It uses the concept of a vaccine to treat the neurological effects of cocaine by evoking "immunity" to prevent the effects of cocaine on the brain.

Detailed Description

This is a Phase I dose-ranging, placebo-controlled, double blind study assessing the safety and preliminary efficacy of an anti-cocaine vaccine called "dAd5GNE vaccine". The vaccine is designed to prevent cocaine from reaching the brain. The vaccine is comprised of GNE, a cocaine-like molecule that is linked to the capsid protein of a disrupted serotype 5 adenovirus. The vaccine is used to evoke "immunity" to prevent cocaine from reaching the brain. The vaccine evokes an immune system response and stimulates the creation of anti-cocaine antibodies. The antibodies bind to the cocaine molecules when a person takes cocaine and prevents the cocaine molecules from reaching the brain. This cocaine-antibody complex is not able to cross the blood brain barrier and thus eliminates the effects of cocaine on the brain, as seen in pre-clinical studies done by our group. In mice, rats and nonhuman primates, this vaccine evoked a persistent, high titer, high affinity IgG anti-cocaine antibody response. The pre-clinical studies conducted establish efficacy for high anti-cocaine antibody titers. The immunity sequesters parenterally administered cocaine in the blood, in mice, rats and nonhuman primates (Appendix I-III).

For each subject, the study will take place over a period of 32 weeks from the time of the first vaccine administration, and will enroll cocaine addicts, as defined by the Diagnostic and Statistical Manual of Mental Disorders, 5th edition, Text Revisions (DSM-V-TR).

Conditions

Cocaine Dependence

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: TRIPLE

Study Groups

Cohort 1: 100µg

Subjects will receive 100µg dAd5GNE vaccine or placebo at weeks 0, 4, 8, 12, 16 and 20.

Group Type: OTHER

dAd5GNE Vaccine

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Placebo

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Cohort 2: 316 µg

Subjects will receive 316 µg dAd5GNE vaccine or placebo at weeks 0, 4, 8, 12, 16 and 20.

Group Type: OTHER

dAd5GNE Vaccine

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Placebo

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Cohort 3: 1000µg

Subjects will receive 1000 µg dAd5GNE vaccine or placebo at weeks 0, 4, 8, 12, 16 and 20.

Group Type: OTHER

dAd5GNE Vaccine

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Placebo

Intervention Type: BIOLOGICAL

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Interventions

dAd5GNE Vaccine

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Intervention Type: BIOLOGICAL

Placebo

dAd5GNE Vaccine or Placebo dAd5GNE Vaccine

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

1. All subjects should be able to provide informed consent.

2. Must provide HIV informed consent.

3. Males and females, 21- 69 years of age.

4. Individuals that have been diagnosed with a cocaine use disorder according to DSM-V-TR criteria, with documented evidence of cocaine use within the past 60 days and have previously used an average of 1 to 10 grams of powdered and/or crack cocaine (via insufflation or smoking only) per week. Any prior 1 to 4 month period of cocaine abstinence in the past year will be excluded when calculating average cocaine use to evaluate study eligibility.

6. Fertile males and females must agree to use adequate forms of contraception for the duration of the entire study.

7. Body weight > 45 kg.

Exclusion Criteria

1. Individuals not deemed in good overall health by the investigator.

2. Diagnosed history of severe psychotic disorders.

3. Abnormal EKG at screening with changes consistent with cardiac disease.

4. History of significant cardiovascular disease, hypertension, prior myocardial infarction and/or cerebrovascular event.

5. Individuals who are currently on beta-blockers.

6. Physical signs or laboratory values suggestive of systemic disorders.

7. History of attempted suicide, as assessed by Columbia-Suicide Severity Rating Scale (C-SSRS) and/or committed homicide.

8. History of diagnosed obsessive compulsive disorder (OCD).

9. Known allergy to soy.

10. Individuals who are currently taking alprazolam (Xanax) or ziprasidone (Geodon).

11. Evidence of active infection of any types, including COVID-19, or positive for human immunodeficiency virus (HIV).

12. Historical or current use of immunomodulators or immunosuppressants <5 years prior to screening.

13. Receipt of blood within 3 months of screening.

14. Females who are pregnant or nursing.

15. Concurrent participation in any other FDA approved Investigational New Drug.

16. Abnormal liver function (transaminases greater than 2x the upper limit of normal values)

17. eGFR <30 mL/min/1.73 m2

18. Severe substance use disorder based on DSM-V-TR criteria (excluding cocaine, nicotine, caffeine, alcohol, marijuana and opiates prescribed for medication assisted therapy or pain treatment) currently not in remission according to one of the following criteria:

• Early Full Remission: This specifier is used if none of the criteria for Dependence or Abuse have been met for at least 1 month, but less than 12 months OR
• Early Partial Remission: This specifier is used if only one or more (but not all) of the criteria for Dependence or Abuse has/have been met for at least 1 month, but less than 12 months. OR
• Sustained Full Remission: This specifier is used if none of the criteria for Dependence or Abuse have been met at any time during a period of 12 months or longer OR
• Sustained Partial Remission: This specifier is used if only one or more (but not all) of the criteria for Dependence or Abuse has/have been met for a period of 12 months or longer OR
• On Agonist Therapy: This specifier is used if the individual is on a prescribed agonist medication, and none of the criteria for Dependence or Abuse has been met for that class of medication for at least the past month (except tolerance to, or withdrawal from, the agonist). This category also applies to those being treated for Dependence using a partial agonist or an agonist/antagonist OR
• Substance Use Related Disorder (mild) up to two disorders: Patients that are assessed to have mild substance-use-related disorders according to the DSM-V criteria will be allowed to participate in the study as long as the number of the disorder-resulting substances does not exceed two (with the exception of the nicotine, caffeine, alcohol, marijuana and opiates prescribed for medication assisted therapy or pain treatment).

19. History of any seizure disorder.

20. Individuals with history of Guillain-Barré Syndrome.

21. Diagnosis of >2 Substance Use Related Disorders (mild) based on DSM-V- TR criteria (excluding nicotine, caffeine, alcohol, marijuana and opiates prescribed for medication assisted therapy or pain treatment

22. On a prescribed agonist medication, with criteria for dependence or abuse for that class ofmedication for at least the past month (except tolerance to, or withdrawal from, the agonist

• Minimum Eligible Age: 21 Years
• Maximum Eligible Age: 69 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role: collaborator

Weill Medical College of Cornell University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Ronald G Crystal, MD

Role: PRINCIPAL_INVESTIGATOR

Weill Medical College of Cornell University

Locations

WCMC Department of Genetic Medicine

New York, New York, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Sandra Hyde

Role: CONTACT

sah2003@med.cornell.edu

646-962-2672

Facility Contacts

Sandra Hyde

Role: primary

sah2003@med.cornell.edu

646-962-2672

Niamh Savage

Role: backup

nis2049@med.cornell.edu

Other Identifiers

U01DA048524

Identifier Type: NIH

Identifier Source: secondary_id

View Link

1206012440

Identifier Type: -

Identifier Source: org_study_id