A Cross-over Study Examining the Bioequivalence of 3 Test Formulations to a Reference Formulation of Alectinib (RO5424802) in Healthy Volunteers

Study Overview
=================
Brief Summary
-----------------
This 2-part, single center, open-label, randomized, single-dose, 4-sequence, 4-period cross-over study will compare the bioequivalence of three test RO5424802 capsule formulations with the reference capsule formulation in healthy adult volunteers. All participants in both fasted (Part 1) and fed (Part 2) conditions of the study will receive each of 4 treatments (Ro542-4802/F03 [RO5424802 with 50 percentage (%) sodium lauryl sulfate (SLS) (reference)], Ro542-4802/F07 [RO5424802 with 25% SLS (test)], Ro542-4802/F14 [RO5424802 with 12.5% SLS (test)] and Ro542-4802/F08 [RO5424802 with 3% SLS (test)] in a randomized sequence. Each treatment will be given as a single 600 milligrams (mg) oral administration in an upright position on Day 1 after an overnight fast, followed by a 10-day washout period. Total time on study is expected to last up to 75 days, for each enrolled participant.

Official Title
-----------------
A Randomized, Open-Label, Single Dose, Cross-Over Study to Investigate the Bioequivalence of Three RO5424802 Test Formulations Versus a Reference Formulation Following Oral Administration in Healthy Subjects

Conditions
-----------------
Healthy Volunteer

Intervention / Treatment
-----------------
* Drug: Ro542-4802/F03 (Reference)
* Drug: Ro542-4802/F07 (Test)
* Drug: Ro542-4802/F08 (Test)
* Drug: Ro542-4802/F14 (Test)


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Healthy male and surgically sterile or post-menopausal female participants 18-55 years of age Body mass index (BMI) between 18 to 32 kilograms per meter-squared (kg/m^2) Non-smoking participants and former smoking participants (who have not smoked for the past six months before first dosing) Male participants and their partners of child-bearing potential must be willing to use two effective contraceptive methods as defined by protocol Willing to abstain from xanthine-containing beverages and food (coffee, tea, cola, chocolate, and energy drinks) from 72 hours prior to Day -1 through the study Willing to abstain from grapefruit, pomelo, star fruit or Seville orange containing products from day 7 prior study start until study end Willing to avoid prolonged sun exposure while taking RO5424802 and through follow-up Exclusion Criteria: Pregnant or lactating women, men with female partners who are pregnant or lactating, or women of child bearing potential Clinically significant abnormalities on physical examination, vital signs, or laboratory test results during screening or prior to admission to the study unit Positive test for drugs of abuse, alcohol or cotinine test at screening or prior to admission to the study unit or suspicion of regular consumption of drug(s) of abuse History of recent alcohol consumption exceeding 2 standard drinks per day on average. Alcohol consuming is prohibited from 72 hours prior to study start until the end of the study Participants with any risk factors or family history for QT/QTcF and electrocardiogram (ECG) abnormalities A history of any concurrent clinically significant hematologic, renal, hepatic, pulmonary, neurological, psychiatric, allergies, gastrointestinal, metabolic or endocrine disorder, or cardiovascular disease or infections Positive screening test for hepatitis B, C, or human immunodeficiency virus (HIV) Use of any medications (prescriptions or over-the-counter), within 2 weeks or 5 half-lives (whichever is longer) before the first dose of study medication with exception of acetaminophen up to 2 grams (g) per day up to 48 hours prior to dosing, not to exceed 4 g total during the week prior to dosing Routine or chronic use of more than 2 g of acetaminophen daily Use of any herbal supplements (for example, St. John's Wort) or any metabolic inducers within 4 weeks or 5 half-lives (whichever is longer) before the first dose of study medication, including but not limited to the following drugs: rifampin, rifabutin, glucocorticoids, carbamazepine, phenytoin, and phenobarbital Strenuous activity, sunbathing or contact sports are not allowed from 4 days prior to study start until the end of the study Participation in an investigational drug or device study within 45 days or 5 half-lives (whichever time period is longer), or 6 months for biologic therapies, prior to first dosing Donation of blood over 450 milliliters (mL) within 45 days prior to screening

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 55 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Design Details

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


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ro542-4802/F03;Ro542-4802/F07;Ro542-4802/F14;Ro542-4802/F08<br>Participants will receive Ro542-4802/F03 (containing 50% SLS) capsules orally on Day 1 of first intervention period; then Ro542-4802/F07 (containing 25% SLS) capsules orally on Day 1 of second intervention period; then Ro542-4802/F14 (containing 12.5% SLS) capsules orally on Day 1 of third intervention period; followed by Ro542-4802/F08 (containing 3% SLS) capsules orally on Day 1 of fourth intervention period during both fasted (Part 1) and fed (Part 2) conditions. A washout period of at least 10 days will be maintained between each period. | Drug: Ro542-4802/F03 (Reference)<br>* Participants will receive Ro542-4802/F03 (containing 50% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F07 (Test)<br>* Participants will receive Ro542-4802/F07 (containing 25% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F08 (Test)<br>* Participants will receive Ro542-4802/F08 (containing 3% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F14 (Test)<br>* Participants will receive Ro542-4802/F14 (containing 12.5% SLS) 600 mg capsules orally on Day 1.<br>|
| Experimental: Ro542-4802/F07;Ro542-4802/F08;Ro542-4802/F03;Ro542-4802/F14<br>Participants will receive Ro542-4802/F07 (containing 25% SLS) capsules orally on Day 1 of first intervention period; then Ro542-4802/F08 (containing 3% SLS capsules orally on Day 1 in second intervention period; then Ro542-4802/F03 (containing 50% SLS) (containing 12.5% SLS) capsules orally on Day 1 of third intervention period; followed by Ro542-4802/F14 (containing 12.5% SLS) capsules orally on Day 1 of the fourth intervention period during both fasted (Part 1) and fed (Part 2) conditions. A washout period of at least 10 days will be maintained between each period. | Drug: Ro542-4802/F03 (Reference)<br>* Participants will receive Ro542-4802/F03 (containing 50% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F07 (Test)<br>* Participants will receive Ro542-4802/F07 (containing 25% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F08 (Test)<br>* Participants will receive Ro542-4802/F08 (containing 3% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F14 (Test)<br>* Participants will receive Ro542-4802/F14 (containing 12.5% SLS) 600 mg capsules orally on Day 1.<br>|
| Experimental: Ro542-4802/F08;Ro542-4802/F14;Ro542-4802/F07;Ro542-4802/F03<br>Participants will receive Ro542-4802/F08 (containing 3% SLS) capsules orally on Day 1 of first intervention period; then Ro542-4802/F14 (containing 12.5% SLS) capsules orally on Day 1 in second intervention period; then Ro542-4802/F07 (containing 25% SLS) capsules orally on Day 1 of third intervention period; followed by Ro542-4802/F03 (containing 50% SLS) capsules orally on Day 1 of the fourth intervention period during both fasted (Part 1) and fed (Part 2) conditions. A washout period of at least 10 days will be maintained between each period. | Drug: Ro542-4802/F03 (Reference)<br>* Participants will receive Ro542-4802/F03 (containing 50% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F07 (Test)<br>* Participants will receive Ro542-4802/F07 (containing 25% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F08 (Test)<br>* Participants will receive Ro542-4802/F08 (containing 3% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F14 (Test)<br>* Participants will receive Ro542-4802/F14 (containing 12.5% SLS) 600 mg capsules orally on Day 1.<br>|
| Experimental: Ro542-4802/F14;Ro542-4802/F03;Ro542-4802/F08;Ro542-4802/F07<br>Participants will receive Ro542-4802/F14 (containing 12.5% SLS) capsules orally on Day 1 of first intervention period; then Ro542-4802/F03 (containing 50% SLS) capsules orally on Day 1 in second intervention period; then Ro542-4802/F08 (containing 3% SLS) capsules orally on Day 1 of third intervention period; followed by Ro542-4802/F07 (containing 25% SLS) capsules orally on Day 1 of the fourth intervention period during both fasted (Part 1) and fed (Part 2) conditions. A washout period of at least 10 days will be maintained between each period. | Drug: Ro542-4802/F03 (Reference)<br>* Participants will receive Ro542-4802/F03 (containing 50% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F07 (Test)<br>* Participants will receive Ro542-4802/F07 (containing 25% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F08 (Test)<br>* Participants will receive Ro542-4802/F08 (containing 3% SLS) 600 mg capsules orally on Day 1.<br>Drug: Ro542-4802/F14 (Test)<br>* Participants will receive Ro542-4802/F14 (containing 12.5% SLS) 600 mg capsules orally on Day 1.<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Area Under the Plasma Concentration-Time Curve From Time Zero to Extrapolated Infinite Time (AUC[0-inf]) of Alectinib | AUC(0-inf) is the area under the alectinib plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-inf). AUC is a measure of the plasma concentration of a drug over time. AUC(0-inf) is presented in nanogram times (*) hour per milliliter (ng*hour/mL). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Area Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib | AUC(0-last) is the area under the alectinib plasma concentration versus time curve from time zero to the time of last measured concentration of alectinib. AUC is a measure of the plasma concentration of a drug over time. AUC(0-last) is presented in ng*hour/mL. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Maximum Observed Plasma Concentration (Cmax) of Alectinib | Cmax is the maximum observed plasma alectinib concentration, presented in nanogram per milliliter (ng/mL). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib | Tmax is the time from alectinib administration to reach Cmax for alectinib. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Cmax of RO5468924 | Cmax is the maximum observed plasma RO5468924 concentration, presented in ng/mL. RO5468924 is the major pharmacologically active metabolite of alectinib. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Tmax of RO5468924 | Tmax is the time from alectinib administration to reach Cmax for RO5468924 (the major pharmacologically active metabolite of alectinib). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| AUC(0-inf) of RO5468924 | AUC(0-inf) is the area under the RO5468924 plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-inf). RO5468924 is the major pharmacologically active metabolite of alectinib. AUC is a measure of the plasma concentration of a drug over time. AUC(0-inf) is presented in ng*hour/mL. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| AUC(0-last) of RO5468924 | AUC(0-last) is the area under the RO5468924 plasma concentration versus time curve from time zero to the time of last measured concentration of RO5468924. RO5468924 is the major pharmacologically active metabolite of alectinib. AUC is a measure of the plasma concentration of a drug over time. AUC(0-last) is presented in ng*hour/mL. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Plasma Terminal Half-Life (t1/2) of Alectinib and RO5468924 | Plasma terminal half-life is the time measured during drug elimination phase for the plasma drug concentration to decrease by one half. RO5468924 is the major pharmacologically active metabolite of alectinib. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Elimination Rate Constant (Kel) of Alectinib and RO5468924 | First-order terminal elimination rate constant (Kel) was calculated as the negative slope of the linear regression of the terminal phase in plasma alectinib and RO5468924 concentration versus time profile using appropriate time points. RO5468924 is the major pharmacologically active metabolite of alectinib. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Total Molar Concentration of Alectinib and RO5468924 as Derived by AUC(0-inf) | AUC(0-inf) is the area under the alectinib + RO5468924 (major pharmacologically active metabolite of alectinib) molar plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). AUC is a measure of the plasma concentration of the alectinib + RO5468924 over time. AUC(0-inf) is presented in nanomoles times (*) hour per liter (nmol*hour/L). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Total Molar Concentration of Alectinib and RO5468924 as Derived by Cmax | Cmax is the maximum observed molar plasma concentration for alectinib + RO5468924 (major pharmacologically active metabolite of alectinib). Cmax is presented in nanomoles per liter (nmol/L). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Total Molar Concentration of Alectinib and RO5468924 as Derived by AUC(0-last) | AUC(0-last) is the area under the alectinib + RO5468924 (major pharmacologically active metabolite of alectinib) molar plasma concentration versus time curve from time zero to the time of last measured concentration of alectinib + RO5468924. AUC(0-last) is presented in nmol*hour/L. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Apparent Oral Clearance (CL/F) of Alectinib | Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Apparent Volume of Distribution (Vz/F) of Alectinib | Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction of drug absorbed. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Percent Extrapolated AUC(0-inf) (AUC%Extrap[0-inf]) for Alectinib and RO5468924 | The AUC%extrap(0-inf), that is, area obtained after extrapolation (extrap) from time to last quantifiable plasma concentration (Tlast) to infinity is calculated by using the formula AUC%extrap(0-inf) = 100*(AUC[0-inf] minus AUC[0-last])/AUC(0-inf); where AUC(0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time and AUC(0-last) is area under the plasma concentration time-curve from zero (pre-dose) to the time of last measured concentration. The function of this parameter is to provide information about what percentage of the theoretical curve AUC(0-inf) was possible to determine experimentally (AUC0-last). | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Adjusted r^2 Value (Rsq) for Regression Estimation of Kel for Alectinib and RO5468924 |  | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUC(0-inf) | AUC(0-inf) is the area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-inf). AUC is a measure of the plasma concentration of the alectinib and RO5468924 (major pharmacologically active metabolite of alectinib) over time. The molecular weight adjusted M/P ratio (RO5468924/alectinib) for AUC(0-inf) is presented. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Molecular Weight Adjusted M/P Ratio for AUC(0-last) | AUC(0-last) is the area under the plasma concentration versus time curve from time zero to the time of last measured concentration. AUC is a measure of the plasma concentration of the alectinib and RO5468924 (major pharmacologically active metabolite of alectinib) over time. The molecular weight adjusted M/P ratio (RO5468924/alectinib) for AUC(0-last) is presented. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Molecular Weight Adjusted M/P Ratio for Cmax | Cmax is the maximum observed plasma concentration of the alectinib and RO5468924 (major pharmacologically active metabolite of alectinib). The molecular weight adjusted M/P ratio (RO5468924/alectinib) for Cmax is presented. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose | 
| Time to Reach Last Quantifiable Plasma Concentration (Tlast) of Alectinib and RO5468924 | Tlast is the time from alectinib administration to reach last quantifiable concentration of alectinib and its major pharmacologically active metabolite RO5468924. | Predose (0 hour), 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, and 96 hours postdose |