Oral Tyramine Pressor Response Study of CX157 Tablets in Healthy Male Volunteers

• Status: Completed
• Trial end date: 2010-10-01
• Target enrollment: 0
• Participant gender: Male

Summary

The objectives of this study were to examine the cardiovascular sensitivity to oral tyramine after establishment of steady state with CX157 Modified Release (MR) Tablets, 125 mg administered twice per day (BID) in healthy volunteers compared to placebo; and to investigate the general safety, tolerability and pharmacokinetic profile of CX157 tablets at steady state compared to placebo.

• Phase: Phase 1
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: CeNeRx BioPharma Inc.
• Treatments: Tyramine

Criteria

Inclusion Criteria:

1. Male between 18 to 50 years of age, inclusive.

2. In good general health as ascertained by not clinically significant physical examination (PE) including measurement of vital signs, medical history, clinical laboratory studies, and 12-lead electrocardiogram (ECG).

3. Body Mass Index (BMI) ≥22 and ≤30 kg/m2.

4. Agree to abstain from consuming either alcohol-containing or caffeine-containing beverages and to adhere to the dietary restrictions.

Exclusion Criteria:

1. Presence of a significant acute or chronic medical disorder.

2. The mean of three consecutive semi-recumbent SBP and diastolic blood pressure (DBP) readings taken five minutes apart over a 10-minute period at Screening and Day -1 exceeds 140 mmHg and 90 mmHg, respectively, and/or is not stable (semi-recumbent SBP exceeds a maximum range of 10 mmHg between the lowest and highest value).

3. The mean of three consecutive semi-recumbent SBP and DBP readings taken five minutes apart over a 10-minute period at Screening and Day -1 is <90 mmHg and 60 mmHg, respectively.

4. Has the requirement for or use of any prescription medications within 35 days of study initiation or anticipates use of any psychoactive medication during the study.

5. Has taken an monoamine oxidase inhibitor (MAOI) within 90 days preceding Period 1, Day 1 of the study.

6. Has requirement for any medication contraindicated for use with an MAOI.

7. Use of any over-the-counter (OTC) medication within 14 days of study drug.

8. History of substance abuse or dependence, including alcohol abuse as defined by Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria, within the past 12 months.

9. Use of tobacco products or any nicotine-containing products (e.g., gum, patch) currently or within the prior 6 months.

10. Subject is unwilling to stop consumption of alcohol or caffeine/xanthine-containing drinks or foods within 72 hours of dosing of Day 1 (including any type of wines, caffeinated or decaffeinated herbal tea, grapefruit products (e.g., fresh, canned, or frozen), Seville oranges and pomelos).

11. Subjects with known adverse events associated with ingestion of tyramine-containing food.

12. Subjects with contraindications to administration of adrenergic receptor antagonists such as labetalol (e.g., asthma, obstructive airway disease, severe bradycardia, diabetes).

13. Abnormal screening medical/physical examination, unless the abnormality is considered unlikely to be affected by study participation, or to confound interpretation of safety data.

14. A clinically significant clinical laboratory or ECG abnormality at screening; includes any of the following:

1. Aspartate aminotransferase (AST/SGOT) >2.0 x the upper limit of normal (ULN),

2. Alanine aminotransferase (ALT/SGPT) >2.0 x the ULN,

3. Alkaline phosphatase (ALP) >2.0 x the ULN,

4. Total bilirubin >1.5 x the ULN,

5. Serum creatinine >1.5 x the ULN, and

6. Blood urea nitrogen (BUN) >1.5 x the ULN.

15. Anticipates elective surgery requiring general anesthesia for at least 10 days following the end of study.

16. Test positive for: Cannabinoids, cocaine, amphetamines, barbiturates, opiates or benzodiazepines, cotinine, alcohol use, hepatitis B or C, or human immunodeficiency virus (HIV).

17. Participation in a clinical investigation within the last 60 days.

18. Previous participation in a prior study of CX157.

19. Any other condition which, in the investigator's opinion, may place the subject at greater than normal risk of developing complications.

20. Donated any blood product (one pint or greater) within the previous 8 weeks.

21. Planning to donate any blood product within 8 weeks of end of study.