A Study of Carbon-14-Labeled LY2835219 ([^14C]-LY2835219) in Healthy Participants

Study Overview
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Brief Summary
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This type of study is called a radiolabeled study. For this study, LY2835219 (study drug) has been specially prepared to contain radiolabeled carbon [^14C]. [^14C] is a naturally occurring radioactive form of the element carbon. This study will help understand how the drug appears in the blood, urine, and stool after it is administered. In addition, this study will also evaluate the safety and tolerability of a single dose of LY2835219 when given to healthy participants. Information about any side effects that may occur will also be collected. This study will last about 3 weeks for each participant, not including screening.

Official Title
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Disposition of [^14C]-LY2835219 Following Oral Administration in Healthy Subjects

Conditions
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Healthy Volunteers

Intervention / Treatment
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* Drug: [^14C]-LY2835219


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Overtly healthy male or female participants as determined by medical history and physical examination Male participants will be sterile Female participants will be surgically sterile or postmenopausal Have a body mass index (BMI) of 18 to 29 kilograms per square meter (kg/m^2) Have venous access sufficient to allow for blood sampling Exclusion Criteria: Have a history or presence of 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 Gastrointestinal disorders causing clinically significant symptoms such as nausea, vomiting, and diarrhea, or malabsorption syndromes

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: [^14C]-LY2835219<br>Single 150 milligram (mg) oral dose solution of LY2835219 containing 5 micro-curies of (µCi) [^14C] labeled drug | Drug: [^14C]-LY2835219<br>* Administered as oral solution<br>* Other names: abemaciclib;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Urinary and Fecal Excretion of LY2835219-Related Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered | The percentage of the total radioactive dose administered that was excreted in urine or feces = (amount of radioactive dose recovered in urine or feces / total radioactive dose administered) * 100. | Predose up to Day 14 postdose; Fecal samples collected at 24-hour (h) intervals; Urine collected at 0 to 6 h, 6 to 12 h, and 12 to 24 h postdose and at 24-h intervals thereafter up to Day 14 postdose | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Plasma Pharmacokinetics (PK) of LY2835219 and Metabolite of LY2835219: Maximum Observed Concentration (Cmax) |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of Radioactivity: Cmax |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of LY2835219, Metabolite of LY2835219, and Radioactivity: Time of Maximum Observed Concentration (Tmax) |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of LY2835219 and Metabolite of LY2835219: Area Under the Concentration-Time Curve From Time Zero to the Last Time Point With a Measurable Concentration [AUC(0-tlast)] |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of Radioactivity: AUC(0 to Tlast) | The PK of radioactivity was measured as nanogram equivalents times hours per gram (ng Eq*h/g). | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of LY2835219 and Metabolite of LY2835219: Area Under the Concentration Versus Time Curve From Zero to Infinity [AUC(0-∞)] |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Plasma PK of Radioactivity: AUC(0-∞) |  | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose | 
| Relative Abundance of LY2835219 and Metabolites of LY2835219 Eliminated in Urine and Feces | The abundance (as percentage dose) of LY2835219 or its metabolites eliminated in feces is calculated as = (amount of LY2835219 or its metabolites recovered in feces / total amount administered) * 100. Due to low radioactivity of dose recovered in urine, further quantitative profiling of urine was not conducted. | Predose through 216 h postdose; Fecal samples collected at 24-h intervals | 
| Relative Abundance of LY2835219 and Metabolites of LY2835219 in Plasma | The relative abundance of LY2835219 or its metabolites in plasma were estimated based on AUC(0-∞) and reported as a percentage of total plasma radioactivity. The relative abundance of LY2835219 or its metabolites calculated as = [AUC (0-∞) of LY2835219 or its metabolites in plasma / AUC (0-∞) of total plasma radioactivity] * 100. | Predose and 0.5, 1, 2, 3, 4, 6, 8, 10, 12, and 24 h postdose, thereafter at 24-h intervals up to Day 14 postdose |