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A Study of the Effect of Multiple Doses of Rifampin on the Single Dose Pharmacokinetics of RO5424802

An Open-Label, Three-Period, Fixed Sequence Study to Investigate the Effect of Multiple Oral Doses of Rifampin, a Potent Cytochrome P450 3A Inducer, on the Single Dose Pharmacokinetics of RO5424802 in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01940510
Enrollment
24
Registered
2013-09-12
Start date
2013-10-31
Completion date
2013-10-31
Last updated
2016-12-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteer

Brief summary

This single center, open-label, 3-period, fixed-sequence study will evaluate the effect of multiple oral doses of rifampin on the pharmacokinetics of a single oral dose of RO5424802 in healthy volunteers. Subjects will receive a single dose of RO5424802 on Days 1 and 17 and rifampin daily from Days 8 to Day 20.

Interventions

Single dose without (Day 1) and with (Day 17) co-administration of rifampin

DRUGrifampin

Multiple doses Days 8-16 and Days 17-20

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy male and female volunteers, 18 to 55 years of age inclusive. Healthy status will be defined by absence of evidence of any active or chronic disease following a detailed medical and surgical history, and a complete physical examination * Body mass index (BMI) between 18 to 32 kg/m2 inclusive * Nonsmoking subjects and former smoking subjects (who have not smoked for the past six months before first dosing) * Female subjects must be surgically sterile or postmenopausal for the past year * Male subjects and their partners of childbearing potential must be willing to use two effective methods of contraception, one of which must be a barrier method (e.g., condom) during the study and for 90 days after the last drug administration

Exclusion criteria

* Women of childbearing potential, pregnant or lactating women, or males with female partners who are pregnant or lactating * Positive urine test for drugs of abuse, alcohol, or cotinine test at screening or prior to admission to the study unit * Suspicion of regular consumption of drug(s) of abuse including marijuana * Current smokers or subjects who have discontinued smoking less than six months prior to first dosing * History (within three months of Screening) of alcohol consumption exceeding 2 standard drinks per day on average (1 standard drink = 10 grams of alcohol). Alcohol consumption will be prohibited 72 hours prior to entry in the clinical site center and throughout the entire study (including the washout period) until discharge * Positive for hepatitis B, hepatitis C, or HIV infection * 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 * Any clinically significant concomitant disease or condition that could interfere with, or for which the treatment of might interfere with, the conduct of the study, absorption, distribution, metabolism or excretion of study medication, or that would, in the opinion of the PI, pose an unacceptable risk to the subject in this study * History of hypersensitivity to any of the additives in the RO5424802 formulation (lactose monohydrate, microcrystalline cellulose, sodium starch glycolate, hydroxypropyl cellulose, sodium lauryl sulphate, magnesium stearate) * Any history of hypersensitivity to or contraindication to the use of rifampin or other rifamycins or history of severe drug-related allergic reactions or hepatoxicity

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Plasma Concentration-Time Curve From Time Zero to Extrapolated Infinite Time (AUC[0-inf]) of AlectinibPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodAUC(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).
Maximum Observed Plasma Concentration (Cmax) of AlectinibPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodCmax is the maximum observed alectinib plasma concentration, presented in nanogram per milliliter (ng/mL).

Secondary

MeasureTime frameDescription
Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUC(0-inf)Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodAUC(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.
Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for CmaxPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodCmax 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.
Area Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodAUC(0-last) is the area under the alectinib and RO5468924 (major pharmacologically active metabolite of alectinib) plasma concentration time-curve from time zero to the last measured concentration. AUC is a measure of the plasma concentration of a drug over time. AUC(0-last) is presented in ng\*hour/mL.
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodThe Tmax is the time from alectinib administration to reach Cmax for alectinib and RO5468924 (the major pharmacologically active metabolite of alectinib).
AUC(0-inf) of RO5468924Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodAUC(0-inf) is the area under the RO5468924 (the major pharmacologically active metabolite of 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 the drug over time. AUC(0-inf) is presented in ng\*hour/mL.
Apparent Oral Clearance (CL/F) of AlectinibPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodClearance 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.
Apparent Volume of Distribution (Vz/F) of AlectinibPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodVolume 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.
Total Molar Concentration of Alectinib and RO5468924 as Derived by AUC(0-inf)Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodAUC(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 molar plasma concentration of the alectinib + RO5468924 over time. AUC(0-inf) is presented in nanomoles times (\*) hour per liter (nmol\*hour/L).
Total Molar Concentration of Alectinib and RO5468924 as Derived by CmaxPredose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodCmax 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).
Plasma Terminal Half-Life (t1/2) of Alectinib and RO5468924Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodPlasma 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.
Cmax of RO5468924Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention periodCmax is the maximum observed RO5468924 (the major pharmacologically active metabolite of alectinib) plasma concentration, presented in ng/mL.

Countries

United States

Participant flow

Participants by arm

ArmCount
Whole Study: Alectinib + Rifampin
There were 3 dosing periods in the study: Period 1 (Days 1 to 7), Period 2 (Days 8 to 16), and Period 3 (Days 17 to 21). Participants following an overnight fast of at least 10 hours ate a standard meal in 30 minutes or less and 30 minutes after start of the meal received alectinib 600 mg capsules orally alone on Day 1 (Period 1), with rifampin (600 mg capsules orally) on Day 17 (Period 3), and rifampin alone was administered from Days 8 through 16 (Period 2) and from Days 18 through 20 (Period 3).
24
Total24

Baseline characteristics

CharacteristicWhole Study: Alectinib + Rifampin
Age, Continuous35.3 years
STANDARD_DEVIATION 9.43
Gender
Female
2 Participants
Gender
Male
22 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
1 / 2416 / 241 / 24
serious
Total, serious adverse events
0 / 240 / 240 / 24

Outcome results

Primary

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).

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: The Pharmacokinetic (PK) analysis set included all participants who received both scheduled doses of alectinib (on Day 1 and Day 17), and provided adequate PK assessments.

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibArea Under the Plasma Concentration-Time Curve From Time Zero to Extrapolated Infinite Time (AUC[0-inf]) of Alectinib3990 ng*hour/mLStandard Deviation 1550
Treatment Period 3: Alectinib + RifampinArea Under the Plasma Concentration-Time Curve From Time Zero to Extrapolated Infinite Time (AUC[0-inf]) of Alectinib1020 ng*hour/mLStandard Deviation 240
Comparison: Analysis of variance (ANOVA) was applied to the log-transformed PK parameters, and then back transformed to provide geometric least square mean ratios (Period 3/Period 1) and confidence intervals.90% CI: [23.8, 30.1]
Primary

Maximum Observed Plasma Concentration (Cmax) of Alectinib

Cmax is the maximum observed alectinib plasma concentration, presented in nanogram per milliliter (ng/mL).

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibMaximum Observed Plasma Concentration (Cmax) of Alectinib212 ng/mLStandard Deviation 78.3
Treatment Period 3: Alectinib + RifampinMaximum Observed Plasma Concentration (Cmax) of Alectinib101 ng/mLStandard Deviation 30.9
90% CI: [43.5, 54.3]
Secondary

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.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibApparent Oral Clearance (CL/F) of Alectinib179 liters/hourStandard Deviation 89.1
Treatment Period 3: Alectinib + RifampinApparent Oral Clearance (CL/F) of Alectinib627 liters/hourStandard Deviation 170
Secondary

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.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibApparent Volume of Distribution (Vz/F) of Alectinib4710 litersStandard Deviation 1890
Treatment Period 3: Alectinib + RifampinApparent Volume of Distribution (Vz/F) of Alectinib9960 litersStandard Deviation 5880
Secondary

Area Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924

AUC(0-last) is the area under the alectinib and RO5468924 (major pharmacologically active metabolite of alectinib) plasma concentration time-curve from time zero to the last measured concentration. AUC is a measure of the plasma concentration of a drug over time. AUC(0-last) is presented in ng\*hour/mL.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureGroupValue (MEAN)Dispersion
Treatment Period 1: AlectinibArea Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924Alectinib3860 ng*hour/mLStandard Deviation 1500
Treatment Period 1: AlectinibArea Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924RO54689242140 ng*hour/mLStandard Deviation 876
Treatment Period 3: Alectinib + RifampinArea Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924Alectinib976 ng*hour/mLStandard Deviation 234
Treatment Period 3: Alectinib + RifampinArea Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC[0-last]) of Alectinib and RO5468924RO54689243850 ng*hour/mLStandard Deviation 1570
Secondary

AUC(0-inf) of RO5468924

AUC(0-inf) is the area under the RO5468924 (the major pharmacologically active metabolite of 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 the drug over time. AUC(0-inf) is presented in ng\*hour/mL.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibAUC(0-inf) of RO54689242250 ng*hour/mLStandard Deviation 904
Treatment Period 3: Alectinib + RifampinAUC(0-inf) of RO54689243970 ng*hour/mLStandard Deviation 1600
90% CI: [158, 202]
Secondary

Cmax of RO5468924

Cmax is the maximum observed RO5468924 (the major pharmacologically active metabolite of alectinib) plasma concentration, presented in ng/mL.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibCmax of RO546892490.5 ng/mLStandard Deviation 43.7
Treatment Period 3: Alectinib + RifampinCmax of RO5468924194 ng/mLStandard Deviation 97
90% CI: [190, 255]
Secondary

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.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Treatment Period 1: AlectinibMolecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUC(0-inf)0.59 ratioStandard Deviation 0.05
Treatment Period 3: Alectinib + RifampinMolecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUC(0-inf)3.96 ratioStandard Deviation 0.67
Secondary

Molecular Weight Adjusted Metabolite to Parent (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.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Treatment Period 1: AlectinibMolecular Weight Adjusted Metabolite to Parent (M/P) Ratio for Cmax0.42 ratioStandard Deviation 0.07
Treatment Period 3: Alectinib + RifampinMolecular Weight Adjusted Metabolite to Parent (M/P) Ratio for Cmax1.92 ratioStandard Deviation 0.32
Secondary

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.

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureGroupValue (MEAN)Dispersion
Treatment Period 1: AlectinibPlasma Terminal Half-Life (t1/2) of Alectinib and RO5468924Alectinib19.2 hoursStandard Deviation 4.41
Treatment Period 1: AlectinibPlasma Terminal Half-Life (t1/2) of Alectinib and RO5468924RO546892424.0 hoursStandard Deviation 3.48
Treatment Period 3: Alectinib + RifampinPlasma Terminal Half-Life (t1/2) of Alectinib and RO5468924Alectinib11.0 hoursStandard Deviation 5.65
Treatment Period 3: Alectinib + RifampinPlasma Terminal Half-Life (t1/2) of Alectinib and RO5468924RO546892423.0 hoursStandard Deviation 11.1
Secondary

Time to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924

The Tmax is the time from alectinib administration to reach Cmax for alectinib and RO5468924 (the major pharmacologically active metabolite of alectinib).

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureGroupValue (MEDIAN)
Treatment Period 1: AlectinibTime to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924Alectinib6.00 hours
Treatment Period 1: AlectinibTime to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924RO54689248.00 hours
Treatment Period 3: Alectinib + RifampinTime to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924Alectinib4.00 hours
Treatment Period 3: Alectinib + RifampinTime to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib and RO5468924RO54689246.00 hours
Secondary

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 molar plasma concentration of the alectinib + RO5468924 over time. AUC(0-inf) is presented in nanomoles times (\*) hour per liter (nmol\*hour/L).

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibTotal Molar Concentration of Alectinib and RO5468924 as Derived by AUC(0-inf)13200 nmol*hour/LStandard Deviation 4670
Treatment Period 3: Alectinib + RifampinTotal Molar Concentration of Alectinib and RO5468924 as Derived by AUC(0-inf)10800 nmol*hour/LStandard Deviation 3910
Secondary

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).

Time frame: Predose (0 hour), 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib-dose in each intervention period

Population: PK analysis set

ArmMeasureValue (MEAN)Dispersion
Treatment Period 1: AlectinibTotal Molar Concentration of Alectinib and RO5468924 as Derived by Cmax614 nmol/LStandard Deviation 231
Treatment Period 3: Alectinib + RifampinTotal Molar Concentration of Alectinib and RO5468924 as Derived by Cmax594 nmol/LStandard Deviation 251

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026