A Study to Evaluate the Safety and Efficacy of an Investigational Drug in HIV Infected Patients (0518-004)(COMPLETED)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier:
NCT00100048
First received: December 22, 2004
Last updated: September 26, 2014
Last verified: September 2014
Results First Received: January 21, 2010  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Subject, Investigator);   Primary Purpose: Treatment
Conditions: HIV Infections
Acquired Immunodeficiency Syndrome
Interventions: Drug: Comparator: MK0518 monotherapy
Drug: Comparator: MK0518 combination therapy
Drug: Comparator: efavirenz
Drug: Comparator: tenofovir
Drug: Comparator: lamivudine
Drug: Placebo monotherapy

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations

Primary therapy period:

For Part I (10 day monotherapy): 24-Jan-2005 to 04-May-2005

Part II (Dose Ranging): 14-Jun-2005 to 04-Oct-2006 (48 weeks); 14-Jun-2005 to 12-Jul-2010 (240 weeks)

Multicenter (29) in the United States (14) and Ex-US (15)


Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment

Patients with Human Immunodeficiency Virus (HIV) Ribonucleic acid (RNA) of at least 5000 copies/mL and cluster of differentiation 4 (CD4) cell counts of at least 100 cells/mm3. All patients must have met laboratory criteria.

206 enrolled; 5 from Cohort I did not continue to the combination phase. Therefore 201 entered the combination phase.


Reporting Groups
  Description
MK0518 100 mg b.i.d.

Cohort I-Monotherapy Phase

MK0518 100 mg twice daily (b.i.d.)

Cohort II Combined-Combination Therapy Phase

MK0518 100 mg + tenofovir + lamivudine

MK0518 200 mg b.i.d

Cohort I-Monotherapy Phase

MK0518 200 mg b.i.d

Cohort II Combined-Combination Therapy Phase

MK0518 200 mg + tenofovir + lamivudine

MK0518 400 mg b.i.d.

Cohort I-Monotherapy Phase

MK0518 400 mg b.i.d.

Cohort II Combined-Combination Therapy Phase

MK0518 400 mg + tenofovir + lamivudine

MK0518 600 mg b.i.d.

Cohort I-Monotherapy Phase

MK0518 600 mg b.i.d.

Cohort II Combined-Combination Therapy Phase

MK0518 600 mg + tenofovir + lamivudine

Placebo

Cohort I-Monotherapy Phase

Placebo to MK0518 b.i.d.

Efavirenz 600 mg q.h.s.

Cohort II Combined-Combination Therapy Phase

efavirenz 600 mg every night at bedtime (q.h.s.)


Participant Flow for 2 periods

Period 1:   Cohort I-Monotherapy Phase 10 Days
    MK0518 100 mg b.i.d.     MK0518 200 mg b.i.d     MK0518 400 mg b.i.d.     MK0518 600 mg b.i.d.     Placebo     Efavirenz 600 mg q.h.s.  
STARTED     7     7     6     8     7     0 [1]
Treated     7     7     6     8     7     0  
COMPLETED     7 [2]   7 [2]   6 [3]   8 [3]   7 [4]   0  
NOT COMPLETED     0     0     0     0     0     0  
[1] participants only assigned Efavirenz 600 mg q.h.s in Cohort II Combined-Combination Therapy Phase
[2] 7 Subjects Continued to Cohort II Combined-Combination Therapy Phase (48 Weeks)
[3] 6 Subjects Continued to Cohort II Combined-Combination Therapy Phase (48 Weeks)
[4] 4 Subjects Continued to Cohort II, as part of the Efavirenz 600 mg q.d. arm

Period 2:   Cohort I & II-Combination Therapy Phase
    MK0518 100 mg b.i.d.     MK0518 200 mg b.i.d     MK0518 400 mg b.i.d.     MK0518 600 mg b.i.d.     Placebo     Efavirenz 600 mg q.h.s.  
STARTED     41 [1]   40 [2]   41 [3]   40 [4]   0 [5]   39 [6]
Treated     39     40     41     40     0     38  
Never Treated     2 [7]   0     0     0     0     1 [7]
COMPLETED     27     31     28     30     0     26  
NOT COMPLETED     14     9     13     10     0     13  
Never Treated                 2                 0                 0                 0                 0                 1  
Adverse Event                 0                 1                 2                 0                 0                 1  
Lack of Efficacy                 1                 3                 0                 0                 0                 2  
Lost to Follow-up                 2                 1                 3                 2                 0                 3  
Withdrawal by Subject                 1                 2                 2                 5                 0                 4  
Other Reason                 7                 1                 4                 2                 0                 0  
Completed Base Study, Did Not Continue                 1                 1                 2                 0                 0                 2  
Laboratory Adverse Experience                 0                 0                 0                 1                 0                 0  
[1] 7 subjects from the Monotherapy Phase and 34 new subjects
[2] 7 subjects from the Monotherapy Phase and 33 new subjects
[3] 6 subjects from the Monotherapy Phase and 35 new subjects
[4] 8 subjects from the Monotherapy Phase and 32 new subjects
[5] participants only assigned Placebo in Cohort I-Monotherapy Phase.
[6] 4 subjects from the Monotherapy Phase (Placebo)and 35 new subjects
[7] Randomised in Cohort II did not start Period



  Baseline Characteristics


  Outcome Measures
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1.  Primary:   Change From Baseline in Plasma Human Immunodeficiency Virus (HIV) Ribonucleic Acid (RNA) on Day 10 (Cohort I)   [ Time Frame: Baseline and Day 10 ]

2.  Primary:   Number of Patients With Clinical Adverse Experiences (CAEs) and Number of Patients With Serious CAEs at Day 10 (Cohort I)   [ Time Frame: 10 days ]

3.  Primary:   Number of Participants With HIV RNA Levels Below 400 Copies/mL at Week 24 (Cohort II)   [ Time Frame: Week 24 ]

4.  Primary:   Number of Patients With Clinical Adverse Experiences (CAEs)   [ Time Frame: 48 weeks ]

5.  Primary:   Number of Patients With Serious CAEs (Cohort I and II Combined)   [ Time Frame: 48 weeks ]

6.  Primary:   Number of Patients With Serious CAEs and Non-serious CAEs at Week 144   [ Time Frame: 144 Weeks ]

7.  Primary:   Number of Participants With Clinical Adverse Experiences (AEs)and Serious Adverse Experiences (SAEs)   [ Time Frame: Week 240 ]

8.  Primary:   Number of Participants With HIV RNA (Human Immunodeficiency Virus Ribonucleic Acid) Levels Below 50 Copies/mL at Week 240   [ Time Frame: Week 240 ]

9.  Secondary:   Number of Participants With HIV RNA Levels Below 50 Copies/mL at Week 24 (Cohort II)   [ Time Frame: Week 24 ]

10.  Secondary:   Change From Baseline in Plasma HIV RNA at Week 24 (Cohort II)   [ Time Frame: Baseline and Week 24 ]

11.  Secondary:   Change From Baseline in Cluster of Differentiation 4 (CD4) Cell Count at Week 24 (Cohort II)   [ Time Frame: Baseline and Week 24 ]

12.  Secondary:   Number of Patients With HIV RNA Level Below 50 Copies/mL and HIV RNA Level Below 400 Copies/mL at Week 96   [ Time Frame: 96 Weeks ]

13.  Secondary:   Change From Baseline in Plasma HIV RNA at Week 96   [ Time Frame: Baseline and Week 96 ]

14.  Secondary:   Change From Baseline in CD4 Cell Count at Week 96   [ Time Frame: Baseline and Week 96 ]

15.  Secondary:   Number of Participants With HIV RNA Levels Below 400 Copies/mL at Week 240   [ Time Frame: Week 240 ]

16.  Secondary:   Change From Baseline in Plasma HIV RNA at Week 240   [ Time Frame: Baseline and Week 240 ]

17.  Secondary:   Change From Baseline in CD4 (T-helper) Cell Count at Week 240   [ Time Frame: Baseline and Week 240 ]

18.  Other Pre-specified:   Number of Participants With HIV RNA Levels Below 400 Copies/mL at Week 48   [ Time Frame: 48 weeks ]

19.  Other Pre-specified:   Number of Patients With Drug-related CAEs   [ Time Frame: 48 weeks ]

20.  Other Pre-specified:   Number of Patients With Serious Drug-related CAEs   [ Time Frame: 48 Weeks ]

21.  Other Pre-specified:   Number of Patients That Discontinued With CAEs   [ Time Frame: 48 Weeks ]

22.  Other Pre-specified:   Number of Patients With Laboratory Adverse Experiences (LAEs)   [ Time Frame: 48 Weeks ]

23.  Other Pre-specified:   Number of Patients With Serious LAEs   [ Time Frame: 48 Weeks ]

24.  Other Pre-specified:   Number of Patients With Drug-related LAEs   [ Time Frame: 48 Weeks ]

25.  Other Pre-specified:   Number of Patients With Serious Drug-related LAEs   [ Time Frame: 48 Weeks ]

26.  Other Pre-specified:   Number of Patients That Discontinued With LAEs   [ Time Frame: 48 Weeks ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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