A Study of LY2216684 and Theophylline in Healthy Subjects

Effect of LY2216684 on the Pharmacokinetics of Theophylline in Healthy Subjects

The primary objective of this study is to confirm that LY2216684 is not an inhibitor of cytochrome P450 1A2 (CYP1A2) in healthy participants using theophylline as a probe substrate for the enzyme. Because LY2216684 has been observed to increase heart rate in some healthy participants, this study will also assess heart rate when coadministered with theophylline.

Study Overview

• Status: Completed
• Conditions: Major Depressive Disorder
• Intervention / Treatment: Drug: LY2216684; Drug: Theophylline

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Texas
    • Dallas, Texas, United States
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 45 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Are overtly healthy males or females, as determined by medical history and physical examination.
• Male participants - Agree to use a reliable method of birth control during the study and for 1 month following the last dose of study drug.
• Female participants - Are women of child-bearing potential who test negative for pregnancy at the time of enrollment, have used a reliable method of birth control for 6 weeks prior to administration of study drug and agree to use a reliable method of birth control both during the study and for 1 month following the last dose of study drug; or are women not of child-bearing potential due to surgical sterilization (hysterectomy or bilateral oophorectomy or tubal ligation) or menopause (at least 1 year without menses or 6 months without menses and a follicle stimulating hormone [FSH] >40 mass International Units per milliliter [mIU/mL]).
• Have body weight >50 kilograms (kg).
• Have clinical laboratory test results within normal reference range for the population or investigator site, or results with acceptable deviations that are judged to be not clinically significant by the investigator.
• Have venous access sufficient to allow blood sampling as per the protocol.
• Have normal sitting blood pressure and pulse rate as determined by the investigator.
• Are reliable and willing to be available for the duration of the study and are willing to follow study procedures.
• Have given written informed consent approved by Lilly and the ethical review board (ERB) governing the site.

Exclusion Criteria:

• Are investigator site personnel directly affiliated with this study and their immediate families. Immediate family is defined as a spouse, parent, child or sibling, whether biological or legally adopted.
• Are currently enrolled in, or discontinued within the last 30 days from, a clinical trial involving an investigational drug or device or off-label use of a drug or device other than the study drug, or are concurrently enrolled in any other type of medical research judged not to be scientifically or medically compatible with this study.
• Have known allergies to LY2216684, theophylline, or related compounds.
• Are persons who have previously completed or withdrawn from this study or any other study investigating LY2216684 within 6 months prior to screening.
• Have an abnormality in the 12-lead electrocardiogram (ECG) that, in the opinion of the investigator, increases the risks associated with participating in the study.
• Have a history of or current cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, or neurological disorders capable of significantly altering the absorption, metabolism, or elimination of drugs; of constituting a risk when taking the study medication; or of interfering with the interpretation of data.
• Have a history or show evidence of significant active neuropsychiatric disease or have a history of suicide attempt or ideation.
• Regularly use known drugs of abuse and/or show positive findings on urinary drug screening.
• Show evidence of human immunodeficiency virus (HIV) and/or positive human HIV antibodies.
• Show evidence of hepatitis C and/or positive hepatitis C antibody.
• Show evidence of hepatitis B and/or positive hepatitis B surface antigen.
• Are women with a positive pregnancy test or women who are lactating.
• Intend to use over-the-counter or prescription medication within 14 days prior to dosing unless deemed acceptable by the investigator and Sponsor's medical monitor.
• Use of any drugs or substances that are known to be substrates, inducers, or inhibitors of cytochrome P450 1A2 (CYP1A2) within 30 days prior to dosing.
• Have donated blood of more than 500 mL within the last month.
• Have an average weekly alcohol intake that exceeds 14 units per week, or are unwilling to stop alcohol consumption for 48 hours prior to check-in in each period and while resident at the clinical research unit (CRU) (1 unit = 12 ounces [oz] or 360 mL of beer; 5 oz or 150 mL of wine; 1.5 oz or 45 mL of distilled spirits).
• Consume 5 or more cups of coffee (or other beverages of comparable caffeine content) per day, on a habitual basis, or any participants unwilling to adhere to study caffeine and chocolate restrictions.
• Have used any tobacco-containing or nicotine-containing products (including but not limited to cigarettes, pipes, cigars, chewing tobacco, nicotine patches, nicotine lozenges, or nicotine gum) within 6 months prior to enrollment.
• Have consumed grapefruit or grapefruit-containing products 7 days prior to enrollment and during the study.
• Have a documented or suspected history of glaucoma.
• Participants determined to be unsuitable by the investigator for any reason.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Theophylline, LY2216684 + Theophylline; Period 1: single 200-milligram (mg) theophylline oral dose on Day 1; Washout period of at least 7 days; Period 2: 18 mg LY2216684 orally, once daily on Days 1-5 with single 200-mg theophylline oral dose coadministered on Day 3	Drug: LY2216684; 18-mg LY2216684 oral dose; Drug: Theophylline; 200-mg theophylline oral dose
Experimental: LY2216684 + Theophylline, Theophylline; Period 1: 18 mg LY2216684 orally, once daily on Days 1-5 with single 200-mg theophylline oral dose coadministered on Day 3; Washout period of at least 7 days; Period 2: single 200-mg theophylline oral dose on Day 1	Drug: LY2216684; 18-mg LY2216684 oral dose; Drug: Theophylline; 200-mg theophylline oral dose

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetics: Area Under the Plasma Concentration-Time Curve From Time 0 Hour to Infinity (AUC0-∞) of Theophylline	The Least Squares (LS) geometric mean was based on AUC0-∞. The AUC for theophylline was calculated on Day 1 of a given period when theophylline was administered alone and on Day 3 of another period when theophylline was coadministered with LY2216684.	Predose 1, 2, 3, 4, 6, 8, 12, 24, 48, and 72 hours post-administration of theophylline on Days 1 and 3
Pharmacokinetics: Maximum Plasma Concentration (Cmax) of Theophylline	The Least Squares (LS) geometric mean was based on Cmax for theophylline on Day 1 of a given period when theophylline was administered alone and on Day 3 of another period when theophylline was coadministered with LY2216684.	Predose 1, 2, 3, 4, 6, 8, 12, 24, 48, and 72 hours post-administration of theophylline on Days 1 and 3
Pharmacokinetics: Time to Maximum Plasma Concentration (Tmax) of Theophylline	This outcome was measured based on Tmax for theophylline on Day 1 of a given period when theophylline was administered alone and on Day 3 of another period when theophylline was coadministered with LY2216684.	Predose 1, 2, 3, 4, 6, 8, 12, 24, 48, and 72 hours post-administration of theophylline on Days 1 and 3

Secondary Outcome Measures

Outcome Measure	Time Frame
Mean Change From Baseline in Heart Rate: 200 mg Theophylline	Baseline, Day 1
Mean Change From Baseline in Heart Rate: 18 mg LY221684 + 200 mg Theophylline	Baseline, Day 1, Day 3

Collaborators and Investigators

• Sponsor: Eli Lilly and Company

Study record dates

Study Major Dates

• Study Start: December 1, 2010
• Primary Completion (Actual): January 1, 2011
• Study Completion (Actual): January 1, 2011

Study Registration Dates

• First Submitted: December 16, 2010
• First Submitted That Met QC Criteria: December 16, 2010
• First Posted (Estimate): December 20, 2010

Study Record Updates

• Last Update Posted (Actual): July 8, 2019
• Last Update Submitted That Met QC Criteria: April 16, 2019
• Last Verified: April 1, 2019

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Mood Disorders; Depressive Disorder; Depressive Disorder, Major; Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Vasodilator Agents; Autonomic Agents; Peripheral Nervous System Agents; Enzyme Inhibitors; Purinergic Antagonists; Purinergic Agents; Bronchodilator Agents; Anti-Asthmatic Agents; Respiratory System Agents; Phosphodiesterase Inhibitors; Purinergic P1 Receptor Antagonists; Theophylline
• Other Study ID Numbers: 12594; H9P-EW-LNCE (Other Identifier: Eli Lilly and Company)