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MK0518

Phase 4FDA approved 2011

HIV Infections | Small molecule | Infectious Disease |Merck & Company, Inc.|Trials Updated: Apr 13, 2026

MK0518 development status

FDA approval Dec 21, 2011 as Isentress
Approval holderMsd Sub Merck
ApplicationNDA203045
Highest phase Phase 4 (NCT00939874)
Phase scored for MRKPhase 3
Registered trials 49 across 26 sponsors since Aug 2002

Label indication Adult Patients: ISENTRESS and ISENTRESS HD are human immunodeficiency virus integrase strand transfer inhibitors (HIV- FDA label

MK0518 target and mechanism

ModalitySmall molecule

Also known as MK0518 (Raltegravir), raltegravir, Isentress®

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials13
Total Enrollment2,034

FDA Designations

No designations recorded

MK0518 clinical trials

MK0518 · 13 trials · 7 indications

Phase 3 5Phase 2 3Phase 1 5
NCT01453192Renal Transplantation and Raltegravir in HIV-Infected PatientsHIV-1 Infection
COMPLETED27 Analytics
NCT00764946A Study of Raltegravir in a Diverse Cohort of HIV-Infected Patients (0518-055)Human Immunodeficiency Virus
COMPLETED209 Analytics
NCT00369941A Study to Evaluate the Safety and Antiretroviral Activity of MK-0518 Versus Efavirenz in Treatment Naive HIV-Infected Patients, Each in Combination With TRUVADA (0518-021 EXT)HIV Infections
COMPLETED566 Analytics
NCT00293254A Study to Evaluate the Safety and Efficacy of Raltegravir (MK0518) in HIV-Infected Patients Failing Current Antiretroviral Therapies (0518-019)HIV Infections
COMPLETED351 Analytics
NCT00293267A Study to Evaluate the Safety and Efficacy of Raltegravir (MK0518) in HIV-Infected Patients Failing Current Antiretroviral Therapies (MK0518-018 EXT2)HIV Infections
COMPLETED352 Analytics
PHASE3COMPLETED
Renal Transplantation and Raltegravir in HIV-Infected Patients
HIV-1 InfectionUnlock trial analytics
PHASE3COMPLETED
A Study of Raltegravir in a Diverse Cohort of HIV-Infected Patients (0518-055)
Human Immunodeficiency VirusUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate the Safety and Antiretroviral Activity of MK-0518 Versus Efavirenz in Treatment Naive HIV-Infected Patients, Each in Combination With TRUVADA (0518-021 EXT)
HIV InfectionsUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate the Safety and Efficacy of Raltegravir (MK0518) in HIV-Infected Patients Failing Current Antiretroviral Therapies (0518-019)
HIV InfectionsUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate the Safety and Efficacy of Raltegravir (MK0518) in HIV-Infected Patients Failing Current Antiretroviral Therapies (MK0518-018 EXT2)
HIV InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of acute clinical renal graft rejection
6 months

Incidence of acute clinical renal graft rejection defined by 20% increase of serum creatinine, associated to histological features (Banff classification) 6 months after renal transplantation

Number of Participants Who Achieved HIV Ribonucleic Acid (RNA) <50 Copies/mL at Week 48
Week 48

Numbers of participants with HIV RNA copies \<50 copies/mL were summarized by race for each time point.

Number of Participants With One or More Adverse Events
Week 48

Numbers of participants with one or more adverse events were summarized by race.

Number of Participants Who Discontinued Due to an Adverse Event
Week 48

Numbers of participants who discontinued due to an adverse event were summarized by race.

Number of Participants Who Achieved Human Immunodeficiency Virus (HIV) Ribonucleic Acid (RNA) <50 Copies/mL at Week 48
48 Weeks

Antiretroviral activity was evaluated for participants who achieved HIV RNA level \<50 copies/mL at Week 48.

Number of Participants With Clinical Adverse Experiences (CAEs) at Week 48
48 Weeks

An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product.

Number of Participants With Serious CAEs at Week 48
48 Weeks

Serious CAEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose.

Number of Participants With Drug-related CAEs at Week 48
48 Weeks

Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants With Serious Drug-related CAEs at Week 48
48 Weeks

Serious CAEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose. Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants That Died by Week 48
48 Weeks

All participant deaths in the span of 48 weeks on study were recorded.

Number of Participants That Discontinued With CAEs at Week 48
48 Weeks

An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product.

Number of Participants That Discontinued With Serious CAEs at Week 48
48 Weeks

Serious CAEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose.

Number of Participants That Discontinued With Drug-related CAEs at Week 48
48 Weeks

Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants That Discontinued With Serious Drug-related CAEs at Week 48
48 Weeks

Serious CAEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose. Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants With Laboratory Adverse Experiences (LAEs) at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product.

Number of Participants With Serious LAEs at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product. Serious AEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose.

Number of Participants With Drug-related LAEs at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product. Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants With Serious Drug-related LAEs at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product. Serious AEs are any AEs occurring at any dose that: results in death; or is life threatening; or results in a persistent or significant disability/incapacity; or results in or prolongs an existing inpatient hospitalization; or is a congenital anomaly/birth defect; or is a cancer; or is an overdose. Adverse experiences (AEs) in this study were defined as "drug-related" if the investigator, who is a qualified physician, considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone according to his/her best clinical judgment.

Number of Participants Discontinued With LAEs at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product.

Number of Participants Discontinued With Drug-related LAEs at Week 48
48 Weeks

A laboratory AE is defined as any unfavorable and unintended change in the chemistry of the body temporally associated with the use of the study product, whether or not considered related to the use of the product. Adverse events (AEs) in this study were defined as "drug-related" if the investigator considered the AE as possibly, probably, or definitely related to MK-0518 or efavirenz alone or in combination with TRUVADA® or to TRUVADA® alone.

Percentage of Participants Achieving HIV RNA <400 Copies/mL at Week 16
16 Weeks

Percentage of participants who achieved HIV RNA \<400 copies/mL at Week 16

Percentage of Participants Achieving HIV RNA <400 Copies/mL at Week 48
48 Weeks

Percentage of participants who achieved HIV RNA \<400 copies/mL at Week 48

Double-Blind Extension - Week 156: Percentage of Participants Achieving HIV RNA <400 Copies/mL
156 Weeks

Percentage of participants who achieved HIV RNA \<400 copies/mL at Week 156

Open-Label Extension - Week 240: Percentage of Participants Achieving HIV RNA <400 Copies/mL
240 Weeks

Percentage of participants who achieved HIV RNA \<400 Copies/mL at Week 240

Change in alkaline phosphatase levels
12 months

Mean changes in alkaline phosphatase levels after 12 months treatment with combination antiretroviral therapy or placebo.

Change From Baseline in Plasma HIV RNA (log10 Copies/mL) at Week 24
Baseline and Week 24

Mean change from baseline at Week 24 in HIV RNA (log10 copies/mL) in all patients

Change From Baseline in Plasma Human Immunodeficiency Virus (HIV) Ribonucleic Acid (RNA) on Day 10 (Cohort I)
Baseline and Day 10

Mean change from baseline on Day 10 in plasma Human Immunodeficiency Virus (HIV) Ribonucleic acid (RNA) (copies/mL)

Number of Patients With Clinical Adverse Experiences (CAEs) and Number of Patients With Serious CAEs at Day 10 (Cohort I)
10 days

An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR'S product, whether or not considered related to the use of the product. Serious CAEs are any AEs occurring at any dose that; Results in death; or Is life threatening; or Results in a persistent or significant disability/incapacity; or Results in or prolongs an existing inpatient hospitalization; or Is a congenital anomaly/birth defect; or Is a cancer; or Is an overdose.

Number of Participants With HIV RNA Levels Below 400 Copies/mL at Week 24 (Cohort II)
Week 24
Number of Patients With Clinical Adverse Experiences (CAEs)
48 weeks

An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR'S product, whether or not considered related to the use of the product.

Number of Patients With Serious CAEs (Cohort I and II Combined)
48 weeks

Serious CAEs are any AEs occurring at any dose that; Results in death; or Is life threatening; or Results in a persistent or significant disability/incapacity; or Results in or prolongs an existing inpatient hospitalization; or Is a congenital anomaly/birth defect; or Is a cancer; or Is an overdose

Number of Patients With Serious CAEs and Non-serious CAEs at Week 144
144 Weeks

An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR'S product, whether or not considered related to the use of the product An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR'S product, whether or not considered related to the use of the product

Number of Participants With Clinical Adverse Experiences (AEs)and Serious Adverse Experiences (SAEs)
Week 240

An AE was defined as any unfavorable \& unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to its use. Any worsening of a preexisting condition which was temporally associated with the use of the study drug, was also an AE. A SAE was any AE that resulted in death, was life threatening, resulted in a persistent or significant disability/incapacity, resulted in or prolonged an existing inpatient hospitalization, was a congenital anomaly/birth defect, was cancer, or was an overdose.

Number of Participants With HIV RNA (Human Immunodeficiency Virus Ribonucleic Acid) Levels Below 50 Copies/mL at Week 240
Week 240

HIV RNA levels were determined by AMPLICOR HIV-1 Monitor™ UltraSensitive Assay.

Change in exposure to TMC278 following co-administration with raltegravir and vice versa
Measured on Days 5, 12, 13, 14, 15, and 16 (TrtC). Reference for exposure to raltegravir only (TrtB), measured on Days 1, 2, 3, and 4. Reference for exposure to TMC278 only (TrtA), measured on Days 1, 8, 9, 10, 11, and 12.
Area Under the Plasma Concentration Time Curve From Time 0 to 24 Hrs (AUC 0-24hr) of Raltegravir Following Once Daily Administration of Raltegravir
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose

In Period 1 participants were treated with 1200 mg raltegravir alone; followed by Period 2 where participants were treated with 1200 mg raltegravir and three tablets of TUMS Ultra Strength (US) 1000 taken orally concomitantly; followed by Period 3 where participants were treated with 1200 mg raltegravir and 12 hours later with 20 mL Leader Antacid Maximum Strength (MS) taken orally; followed by Period 4 where participants were treated with 1200 mg raltegravir and 12 hours later with three tablets of TUMS US 1000 taken orally. The wait between Periods was a maximum of 7 days, during which participants were treated with 1200 mg raltegravir once daily. To determine the plasma concentration of raltegravir, blood samples were collected from pre-dose up to 24 hours post-dose, and analysis of variance (ANOVA) modeling was performed on natural log-transformed values to derive geometric least-squares means.

Maximum Plasma Concentration (Cmax) of Raltegravir Following Once Daily Administration of Raltegravir
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose

In Period 1 participants were treated with 1200 mg raltegravir alone; followed by Period 2 where participants were treated with 1200 mg raltegravir and three tablets of TUMS US 1000 taken orally concomitantly; followed by Period 3 where participants were treated with 1200 mg raltegravir and 12 hours later with 20 mL Leader Antacid MS taken orally; followed by Period 4 where participants were treated with 1200 mg raltegravir and 12 hours later with three tablets of TUMS US 1000 taken orally. The wait between Periods was a maximum of 7 days, during which participants were treated with 1200 mg raltegravir once daily. To determine the plasma concentration of raltegravir, blood samples were collected from pre-dose up to 24 hours post-dose, and ANOVA modeling was performed on natural log-transformed values to derive geometric least-squares means.

Plasma Concentration at 24 Hrs Post-dose (C24hr) of Raltegravir Following Once Daily Administration of Raltegravir
24 hours post-dose

In Period 1 participants were treated with 1200 mg raltegravir alone; followed by Period 2 where participants were treated with 1200 mg raltegravir and three tablets of TUMS US 1000 taken orally concomitantly; followed by Period 3 where participants were treated with 1200 mg raltegravir and 12 hours later with 20 mL Leader Antacid MS taken orally; followed by Period 4 where participants were treated with 1200 mg raltegravir and 12 hours later with three tablets of TUMS US 1000 taken orally. The wait between Periods was a maximum of 7 days, during which participants were treated with 1200 mg raltegravir once daily. To determine the plasma concentration of raltegravir, blood samples were collected at 24 hours post-dose, and ANOVA modeling was performed on natural log-transformed values to derive geometric least-squares means.

Plasma Concentration of Raltegravir at 12 Hours (C 12 Hrs) in Part 1
12 hours after dosing on Day 1 of each period

Blood was drawn 12 hours after dosing with raltegravir in order to determine the geometric mean plasma concentration.

Area Under the Plasma Concentration Versus Time Curve (AUC 0-12 Hrs) of Raltegravir in Part 1
Predose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose on Day 1 of each period

Blood was drawn at time 0, and at various intervals up to 12 hours after dosing with raltegravir in order to determine the geometric mean area under the curve plasma concentration versus time.

Maximum Plasma Concentration (C Max) of Raltegravir in Part 1
Predose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose on Day 1 of each period

Blood was drawn at time 0, and at various intervals up to 12 hours after dosing with raltegravir, in order to determine the geometric mean maximum plasma concentration.

Plasma Concentration of Raltegravir at 12 Hours (C 12 Hrs) in Part 2
12 hours after dosing on Day 1 of each period

Blood was drawn 12 hours after dosing with raltegravir in order to determine the geometric mean plasma concentration.

Area Under the Plasma Concentration Versus Time Curve (AUC 0-12 Hrs) of Raltegravir in Part 2
Predose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose on Day 1 of each period

Blood was drawn at time 0, and at various intervals up to 12 hours after dosing with raltegravir, in order to determine the geometric mean area under the curve plasma concentration versus time.

Maximum Plasma Concentration (C Max) of Raltegravir in Part 2
Predose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose on Day 1 of each period

Blood was drawn at time 0, and at various intervals up to 12 hours after dosing with raltegravir, in order to determine the geometric mean maximum plasma concentration.

Least Squares Mean Steady State Plasma Concentration (C12hrs) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
12 hours postdose

Participant blood samples were collected to measure the steady state plasma concentration of raltegravir 12 hours after administration alone or with a single dose of antacid. The primary hypothesis compared C12hrs of raltegravir when administered alone with C12hrs of raltegravir when coadministered with TUMS® or MINTOX®.

Least Squares Mean Steady State Plasma Concentration (C12hrs) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
12 hours postdose

Participant blood samples were collected to measure the steady state plasma concentration of raltegravir 12 hours after administration alone or before or after a single dose of antacid. The secondary hypothesis compared C12hrs of raltegravir when administered alone with C12hrs of raltegravir when administered 2 hours before or after MINTOX®.

Least Squares Mean Steady State Area Under the Plasma Concentration-time Curve (AUC0-12hrs) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose

Participant blood samples were collected to measure the steady state AUC of raltegravir up to 12 hours after administration alone or with a single dose of antacid. The primary hypothesis compared AUC0-12hrs of raltegravir when administered alone with AUC0-12hrs of raltegravir when coadministered with TUMS® or MINTOX®.

Least Squares Mean Steady State Area Under the Plasma Concentration-Time (AUC0-12hrs) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose

Participant blood samples were collected to measure the steady state AUC of raltegravir up to 12 hours after administration alone or before or after a single dose of antacid. The secondary hypothesis compared AUC0-12hrs of raltegravir when administered alone with AUC0-12hrs of raltegravir when administered 2 hours before or after MINTOX®.

Least Squares Mean Maximum Plasma Concentration (Cmax) of Raltegravir After Coadministration of Antacid (Primary Hypothesis)
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose

Participant blood samples were collected to measure the steady state maximum plasma concentration of raltegravir when administered alone or with a single dose of antacid. The primary hypothesis compared Cmax of raltegravir when administered alone with Cmax of raltegravir when coadministered with TUMS® or MINTOX®.

Least Squares Mean Maximum Plasma Concentration (Cmax) of Raltegravir After Staggered Administration of Antacid (Secondary Hypothesis)
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose

Participant blood samples were collected to measure the maximum steady state plasma concentration of raltegravir after administration alone or before or after a single dose of antiacid. The secondary hypothesis compared Cmax of raltegravir when administered alone with Cmax of raltegravir when administered 2 hours before or after MINTOX®.

Mean Time to Maximum Plasma Concentration (Tmax) of Raltegravir
Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours postdose

Participant blood samples were collected to measure the time to achieve the maximum steady state plasma concentration of raltegravir when administered alone or with a single dose of antacid

Number of Participants With Any Clinical or Laboratory Adverse Event (AE)
Up to 7 days after the last dose of study drug

An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product. Any worsening of a preexisting condition which is temporally associated with the use of the study drug is also an adverse experience.

Plasma Area Under Curve (AUC 0-12 hr ) for Raltegravir
12 hours postdose

Area Under the Plasma Concentration-Time Curve and peak concentration

Secondary Endpoints

Incidence of acute clinical and subclinical renal graft rejection
1 year
One year graft survival
1 year
Patients' survival
1 year
Unlock Study Endpoints

Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
RaltegravirEXPERIMENTALRaltegravir associated to an antiretroviral regimen without ritonavir boosted antiprotease
1EXPERIMENTALraltegravir
MK-0518 400 mg b.i.d.EXPERIMENTALMK-0518 400 mg, which can be taken by mouth (PO) twice a day (b.i.d.) without regard to food, and placebo to efavirenz, which will be taken PO at bedtime (q.h.s.) on an empty stomach preferably at bedtime. All participants will take one tablet of TRUVADA® (200 mg of emtricitabine and 300 mg of tenofovir disoproxil fumarate) with food, daily with the morning dose of MK-0518. Dosing interval adjustment of TRUVADA® is recommended in all participants with creatinine clearance 30-49 mL/min.
Efavirenz 600 mg q.h.s.ACTIVE_COMPARATOREfavirenz 600 mg, which will be taken by mouth (PO) at bedtime (q.h.s.) on an empty stomach preferably at bedtime, and placebo to MK-0518, which will be taken PO twice a day (b.i.d.) without regard to food. All participants will take one tablet of TRUVADA® with food, daily with the morning dose of placebo. Dosing interval adjustment of TRUVADA® is recommended in all participants with creatinine clearance 30-49 mL/min.
2PLACEBO_COMPARATORPlacebo
Emtricitabine (FTC)/Tenofovir Disoproxil (TDF) & RaltegravirEXPERIMENTALone Emtricitabine 200mg and Tenofovir Disoproxil 300mg tablet two Raltegravir 600mg tablets
PlaceboPLACEBO_COMPARATORIdentical tablets resembling one Emtricitabine 200mg and Tenofovir Disoproxil 300mg tablet two Raltegravir 600mg tablets
3EXPERIMENTALMK0518 600 mg
4PLACEBO_COMPARATORPlacebo
600 mg monotherapyEXPERIMENTALMK0518 600 mg twice daily
400 mg monotherapyEXPERIMENTALMK0518 400 mg twice daily
200 mg monotherapyEXPERIMENTALMK0518 200 mg twice daily
100 mg monotherapyEXPERIMENTALMK0518 100 mg twice daily
placebo monotherapyPLACEBO_COMPARATORPlacebo to MK0518 twice daily
600 mg combo therapyEXPERIMENTALMK0518 600 mg + tenofovir + lamivudine
400 mg combo therapyEXPERIMENTALMK0518 400 mg + tenofovir + lamivudine
200 mg combo therapyEXPERIMENTALMK0518 200 mg + tenofovir + lamivudine
100 mg combo therapyEXPERIMENTALMK0518 100 mg + tenofovir + lamivudine
EFV combo therapyACTIVE_COMPARATORefavirenz + tenofovir + lamivudine
001EXPERIMENTALTMC278 One 25 mg tablet once daily for 11 days (TrtA and C)
002EXPERIMENTALRaltegravir One 400 mg tablet twice daily for 4 days (Trt B) and for 11 days (TrtC)
Raltegravir Pre- and 4 Period SequenceEXPERIMENTALStarting five days prior to Period 1 participants will be treated with 1200 mg raltegravir, once daily for five days. In Period 1 participants will be treated with 1200 raltegravir alone; this is followed by Period 2 where participants will be treated with 1200 mg raltegravir and TUMS concomitantly; this is followed by Period 3 where participants will be treated with 1200 mg raltegravir and 12 hours later with Leader Antacid; followed by Period 4 where participants will be treated with 1200 mg raltegravir and 12 hours later with TUMS. The wait between Periods is 2-7 days.
Ralt→MAL4Ralt→Ralt4MAL→MAL6Ralt→Ralt6MALEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: Raltegravir (Ralt) alone in Period 1, MAALOX (MAL) followed 4 hrs later by Ralt in Period 2, Ralt followed 4 hrs later by MAL in Period 3, MAL followed 6 hrs later by Ralt in Period 4, Ralt followed 6 hrs later by MAL in Period 5
MAL4Ralt→Ralt4MAL→Ralt→MAL6Ralt→Ralt6MALEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: MAL followed 4 hrs later by Ralt in Period 1, Ralt followed 4 hrs later by MAL in Period 2, Ralt alone in Period 3, MAL followed 6 hrs later by Ralt in Period 4, Ralt followed 6 hrs later by MAL in Period 5
Ralt4MAL→Ralt→MAL4Ralt→MAL6Ralt→Ralt6MALEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: Ralt followed 4 hrs later by MAL in Period 1, Ralt alone in Period 2, MAL followed 4 hrs later by Ralt in Period 3, MAL followed 6 hrs later by Ralt in Period 4, Ralt followed 6 hrs later by MAL in Period 5
Ralt→Ralt4MAL→MAL4Ralt→Ralt6MAL→MAL6RaltEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: Ralt alone in Period 1, Ralt followed 4 hrs later by MAL in Period 2, MAL followed 4 hrs later by Ralt in Period 3, Ralt followed 6 hrs later by MAL in Period 4, MAL followed 6 hrs later by Ralt in Period 5
MAL4Ralt→Ralt→Ralt4MAL→Ralt6MAL→MAL6RaltEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: MAL followed 4 hrs later by Ralt in Period 1, Ralt alone in Period 2, Ralt followed 4 hrs later by MAL in Period 3, Ralt followed 6 hrs later by MAL in Period 4, MAL followed 6 hrs later by Ralt in Period 5
Ralt4MAL→MAL4Ralt→Ralt→Ralt6MAL→MAL6RaltEXPERIMENTALPart 1 was comprised of periods 1, 2 and 3; Part 2 was comprised of periods 4 and 5; with each study period separated by a washout period of at least 2 days. Part 1 was separated from Part 2 by a Pause. Each period had single oral dose treatments as follows: Ralt followed 4 hrs later by MAL in Period 1, MAL followed 4 hrs later by Ralt in Period 2, Ralt alone in Period 3, Ralt followed 6 hrs later by MAL in Period 4, MAL followed 6 hrs later by Ralt in Period 5
RAL, TUMS+RAL, MINTOX+RAL, MINTOX Before RAL, MINTOX After RALEXPERIMENTALParticipants received Raltegravir in treatment period 1, followed by TUMS® + Raltegravir in treatment period 2, followed by MINTOX® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours After Raltegravir in treatment period 5. There was a 2-day washout between treatment periods.
TUMS+RAL, MINTOX+RAL, RAL, MINTOX Before RAL, MINTOX After RALEXPERIMENTALParticipants received TUMS® + Raltegravir in treatment period 1, followed by MINTOX® + Raltegravir in treatment period 2, followed by Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours after Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
MINTOX+RAL, RAL, TUMS+RAL, MINTOX Before RAL, MINTOX After RALEXPERIMENTALParticipants received MINTOX® + Raltegravir in treatment period 1, followed by Raltegravir in treatment period 2, followed by TUMS® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours before Raltegravir in treatment period 4, followed by MINTOX® 2 hours after Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
RAL, MINTOX+RAL, TUMS+RAL, MINTOX After RAL, MINTOX Before RALEXPERIMENTALParticipants received Raltegravir in treatment period 1, followed by MINTOX® + Raltegravir in treatment period 2, followed by TUMS® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
TUMS+RAL, RAL, MINTOX+RAL, MINTOX After RAL, MINTOX Before RALEXPERIMENTALParticipants received TUMS® + Raltegravir in treatment period 1, followed by Raltegravir in treatment period 2, followed by MINTOX® + Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
MINTOX+RAL, TUMS+RAL, RAL, MINTOX After RAL, MINTOX Before RALEXPERIMENTALParticipants received MINTOX® + Raltegravir in treatment period 1, followed by TUMS® + Raltegravir in treatment period 2, followed by Raltegravir in treatment period 3, followed by MINTOX® 2 hours after Raltegravir in treatment period 4, followed by MINTOX® 2 hours before Raltegravir in treatment period 5. There was a minimum 2-day washout between treatment periods.
Period 1EXPERIMENTALMK0518
Period 2EXPERIMENTALfamotidine + MK0518
Period 3EXPERIMENTALomeprazole + MK0518

Interventions

NameTypeDescription
RaltegravirDRUGIntroduction of Raltegravir 2 days after renal transplantation within an antiretroviral regimen without ritonavir boosted antiprotease
Comparator: raltegravirDRUG400 mg tablets taken twice daily. Total treatment period is 48 weeks.
MK-0518DRUG400 mg MK-0518 tablet taken by mouth (PO) twice a day (b.i.d.) for up to 240 weeks
Comparator: efavirenzDRUG600 mg efavirenz tablet taken by mouth (PO) every night (q.h.s.) for up to 240 weeks
Comparator: TruvadaDRUGOne tablet Truvada once a day (q.d.) for up to 240 weeks (one tablet contains 200 mg emtricitabine and 300 mg tenofovir)
Comparator: Placebo to MK-0518DRUGPlacebo to MK-0518 PO b.i.d., taken for up to 240 weeks
Comparator: Placebo to efavirenzDRUGPlacebo to efavirenz PO every night (q.h.s.), taken for up to 240 weeks
raltegravir potassiumDRUGRaltegravir 400 mg twice daily (b.i.d.) by mouth (p.o.) with optimized background therapy. Treatment period of 48 weeks.
Comparator: placeboDRUGPlacebo p.o. b.i.d. with optimized background therapy. Treatment period of 48 weeks.
Emtricitabine (FTC)/Tenofovir Disoproxil (TDF)DRUGEmtricitabine (FTC) 200 mg/Tenofovir Disoproxil (TDF) 300 mg by mouth once per day
Placebo Oral Capsule [CEBOCAP]DRUGTwo capsules identical to Raltegravir and one capsule identical to Truvada with no active ingredients by mouth once per day
Comparator: MK0518DRUGMK0518 oral tablets 200 mg b.i.d, for 24 weeks
MK0518DRUGMK0518 oral tablets 400 mg b.i.d, for 24 weeks
PlaceboDRUGPlacebo to MK0518, oral tablet b.i.d, for 24 weeks
Comparator: MK0518 monotherapyDRUGMK0518 twice daily for 10 days
Comparator: MK0518 combination therapyDRUGMK0518 twice daily for 48 weeks
Comparator: tenofovirDRUGtenofovir 300 mg daily for 48 weeks
Comparator: lamivudineDRUGlamivudine 300 mg daily for 48 weeks
Placebo monotherapyDRUGPlacebo to MK0518 twice daily
TMC278DRUGOne 25 mg tablet, once daily, for 11 days (TrtA and C)
Raltegravir 1200 mgDRUGTwo tablets of 600 mg raltegravir administered orally, once daily, over 5 days of Pre-treatment, and once at the start of Periods 1-4.
TUMSDRUGThree tablets of TUMS Ultra Strength (US) 1000, taken orally, concomitantly with raltegravir in Period 2, and 12 hours after raltegravir in Period 4
Leader AntacidDRUG20 mL Leader Antacid Maximum Strength (MS) taken orally 12 hours after raltegravir, in Period 3
Raltegravir (ISENTRESS™)DRUGRaltegravir 400 mg oral tablet once every 12 hours. Participants will continue with their other prescribed antiretroviral agents throughout the study.
MAALOX (MAL)DRUGMAL (or generic equivalent) 20 mL oral single dose on Day 1
TUMS® Ultra StrengthDRUG3 tablets TUMS® Ultra Strength (US) 1000 mg Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.
MINTOX® Maximum StrengthDRUG20 mL MINTOX® Maximum Strength (MS) Throughout the study, participants will continue to take raltegravir every 12 hours along with their other HIV medications. There will be a minimum of 2 days washout between treatment periods. On the day of co-dosing and intensive PK sampling, raltegravir will be dosed in the morning in a fasted state in all periods.
MK0518 (Raltegravir)DRUG400 mg oral tablet of MK0518 once every 12 hours. Period 1 duration is one day, Period 2 duration is one day, Period 3 duration is five days.
famotidineDRUGSingle 20 mg famotidine oral tablet taken 2 hours prior to administration of AM dose of MK0518
omeprazoleDRUG20 mg oral tablet of omeprazole, once daily for 5 days
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites14

Inclusion Criteria: * Registration on the French national renal transplantation waiting list (Biomedicines Agency) for a living or cadaveric donor organ * HIV-1-infected patients treated by a three-drug ARV regimen * Immuno-virologic criteria at renal transplantation: undetectable viral load (\<50 ...

Countries:FranceCanada
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Frequently asked questions about MK0518

What is MK0518 used for?

MK0518 is used to treat HIV infections, including HIV-1 infection. It has been studied in treatment-naive HIV-infected patients and in patients failing current antiretroviral therapies. The drug is a small molecule developed for the infectious disease therapeutic area.

Who makes MK0518?

MK0518 is developed by Merck & Company, Inc., which trades under the ticker MRK. Merck sponsored the clinical trials evaluating the drug in HIV-infected patients, including studies combining it with other antiretroviral agents such as TRUVADA.

What phase is MK0518 in?

MK0518 has been studied in Phase 3 clinical development. Its trials include a Phase 3 study and two Phase 2 studies, all of which are completed. The drug is investigational and is not described as approved.

What clinical trials is MK0518 in?

MK0518 has been evaluated in completed trials including NCT00369941, a Phase 3 study versus efavirenz in treatment-naive HIV-infected patients; NCT00105157 and NCT00100048, Phase 2 studies in HIV-infected patients; and NCT01000818, a Phase 1 pharmacokinetic study with famotidine and omeprazole.

Is MK0518 the same as raltegravir?

Yes, MK0518 is also known as raltegravir. Other names used for the same compound include MK-0518 and MK0518 (Raltegravir). Searches for any of these names refer to the same Merck small molecule studied in HIV infection.

What does MK0518 target?

MK0518 is a small molecule antiretroviral agent studied for HIV-1 infection and HIV infections. Its trials evaluated antiretroviral activity in treatment-naive patients and in patients failing current antiretroviral therapies, both as monotherapy and in combination regimens.