Study to Assess Potential Interactions Between Intravenous Cocaine and Oral Lorcaserin

National Institutes of Health (NIH)

Status and phase: Completed; Phase 1

Conditions: Cocaine Abuse

Treatments: Drug: Placebo; Drug: Lorcaserin; Drug: Cocaine Infusion

Study type: Interventional

Funder types: NIH

Identifiers

NCT02393599

Lorcaserin-Phase 1b-001

Details and patient eligibility

About

The primary objective of this study is to determine if there are significant interactions between oral lorcaserin treatment concurrent with 20 and 40 mg intravenous (i.v.) cocaine infusions by measuring adverse events (AEs) and cardiovascular responses including heart rate (HR), blood pressure (BP), and electrocardiogram (ECG) (including QTc).

Enrollment: 20 patients

Sex: All

Ages: 18 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Be volunteers who are not seeking treatment for drug addiction.

• Be between 18 and 50 years-of-age.

• Meet Diagnostic and Statistical Manual (DSM-IV) - Text Revision (TR) criteria for current cocaine abuse as assessed using the MINI neuropsychiatric interview (version 6.0).

• Have a body mass index (BMI) within a range of 18.0 to 34.0 kg/m2 and a minimum weight of at least 50.0 kg at screening.

• Have experience using cocaine by the smoked or i.v. route at least 6 times in the past 12 months prior to clinic intake (Day -3) and at least one use within the past 30 days.

• Provide a urine sample positive for cocaine at least once during screening (Days -28 to -4).

• Be able to verbalize understanding of consent form, able to provide written informed consent, and verbalize willingness to complete study procedures.

• Females must have a negative serum pregnancy test at screening and negative urine pregnancy test at intake prior to receiving the first dose of investigational drug. They must also be postmenopausal, have had a hysterectomy, been sterilized, have a partner with a vasectomy, or agree to use one of the following methods of birth control starting at least 14 days prior to clinic intake:

  1. diaphragm and condom by partner
  2. condom and spermicide by partner
  3. intrauterine device and condom by partner
  4. sponge and condom by partner
  5. complete abstinence from sexual intercourse
  6. oral contraceptives, Depo-Provera, Norplant, Patch, and intrauterine progesterone contraceptive

• Be able to comply with protocol requirements, rules and regulations of the study site and be likely to complete all the study treatments.

Exclusion criteria

• Please contact site directly for more information

Trial design

Primary purpose: Diagnostic

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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20 participants in 2 patient groups, including a placebo group

Lorcaserin

Experimental group

Description:

Lorcaserin (10mg) will be administered 2 times per day from Days 3 to 9 and only one time on Day 10

Treatment:

Drug: Lorcaserin

Drug: Cocaine Infusion

Placebo

Placebo Comparator group

Description:

Placebo will be administered 2 times per day from Days 3 to 9 and only one time on Day 10

Treatment:

Drug: Placebo