Study of Lopinavir/Ritonavir Tablets Versus Soft Gel Capsules and Once Daily Versus Twice Daily Administration, When Coadministered With Nucleoside Reverse Transcriptase Inhibitors in Antiretroviral Naive Human Immunodeficiency Virus Type 1 Infected Subjects

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Abbott
ClinicalTrials.gov Identifier:
NCT00262522
First received: December 5, 2005
Last updated: February 3, 2012
Last verified: February 2012
Results First Received: July 9, 2009  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Open Label;   Primary Purpose: Treatment
Condition: Human Immunodeficiency Virus Infections
Intervention: Drug: lopinavir/ritonavir (LPV/r) (tablet or capsule) with nucleoside reverse transcriptase inhibitors (NRTIs)

  Participant Flow
  Hide Participant Flow

Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
Subjects were enrolled at 131 sites in 19 countries.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
Of the 672 subjects randomized, 8 discontinued from the study prior to receiving study drug due to withdrawal of consent (3), acute illness (2), lost to follow-up (1), other (1), and required prohibited medication (1).

Reporting Groups
  Description
LPV/r 800/200 mg QD Tablet lopinavir/ritonavir 800/200 mg once daily (QD) tablet
LPV/r 800/200 mg QD SGC (Through Week 8) lopinavir/ritonavir 800/200 mg once daily (QD) soft gel capsule (SGC)
LPV/r 400/100 mg BID Tablet lopinavir/ritonavir 400/100 mg twice daily (BID) tablet
LPV/r 400/100 mg BID SGC (Through Week 8) lopinavir/ritonavir 400/100 mg twice daily (BID) soft gel capsule (SGC)

Participant Flow for 3 periods

Period 1:   Study Start Through 8 Weeks
    LPV/r 800/200 mg QD Tablet     LPV/r 800/200 mg QD SGC (Through Week 8)     LPV/r 400/100 mg BID Tablet     LPV/r 400/100 mg BID SGC (Through Week 8)  
STARTED     167     166     166     165  
COMPLETED     163     161     155     160  
NOT COMPLETED     4     5     11     5  
Adverse Event                 1                 2                 3                 1  
Withdrawal by Subject                 1                 1                 3                 0  
Lost to Follow-up                 1                 2                 3                 2  
Noncompliance                 0                 0                 2                 2  
Death                 1                 0                 0                 0  

Period 2:   Study Start Through 48 Weeks
    LPV/r 800/200 mg QD Tablet     LPV/r 800/200 mg QD SGC (Through Week 8)     LPV/r 400/100 mg BID Tablet     LPV/r 400/100 mg BID SGC (Through Week 8)  
STARTED     333 [1]   0 [2]   331 [1]   0 [3]
COMPLETED     284     0     276     0  
NOT COMPLETED     49     0     55     0  
Adverse Event                 16                 0                 10                 0  
Withdrawal by Subject                 10                 0                 11                 0  
Lost to Follow-up                 8                 0                 14                 0  
Noncompliance                 3                 0                 8                 0  
Death                 2                 0                 1                 0  
Virologic failure                 2                 0                 4                 0  
Relocated, Needed to take twice daily                 8                 0                 7                 0  
[1] Number of subjects who started the study, not the number who completed the first 8 weeks.
[2] After Week 8, these subjects received the tablet formulation once daily through the end of study.
[3] After Week 8, these subjects received the tablet formulation twice daily through the end of study.

Period 3:   Study Start Through 96 Weeks
    LPV/r 800/200 mg QD Tablet     LPV/r 800/200 mg QD SGC (Through Week 8)     LPV/r 400/100 mg BID Tablet     LPV/r 400/100 mg BID SGC (Through Week 8)  
STARTED     333 [1]   0 [2]   331 [1]   0 [3]
COMPLETED     256     0     254     0  
NOT COMPLETED     77     0     77     0  
Adverse Event                 20                 0                 16                 0  
Withdrawal by Subject                 15                 0                 13                 0  
Lost to Follow-up                 19                 0                 18                 0  
Noncompliance                 6                 0                 11                 0  
Death                 2                 0                 2                 0  
Virologic failure                 5                 0                 8                 0  
Relocated, Needed to take twice daily                 10                 0                 9                 0  
[1] Number of subjects who started the study, not the number who completed the first 48 weeks.
[2] After Week 8, these subjects received the tablet formulation once daily through the end of study.
[3] After Week 8, these subjects received the tablet formulation twice daily through the end of study.



  Baseline Characteristics
  Hide Baseline Characteristics

Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
No text entered.

Reporting Groups
  Description
LPV/r 800/200 mg QD Tablet lopinavir/ritonavir 800/200 mg once daily (QD) tablet
LPV/r 800/200 mg QD SGC (Through Week 8) lopinavir/ritonavir 800/200 mg once daily (QD) soft gel capsule (SGC)
LPV/r 400/100 mg BID Tablet lopinavir/ritonavir 400/100 mg twice daily (BID) tablet
LPV/r 400/100 mg BID SGC (Through Week 8) lopinavir/ritonavir 400/100 mg twice daily (BID) soft gel capsule (SGC)
Total Total of all reporting groups

Baseline Measures
    LPV/r 800/200 mg QD Tablet     LPV/r 800/200 mg QD SGC (Through Week 8)     LPV/r 400/100 mg BID Tablet     LPV/r 400/100 mg BID SGC (Through Week 8)     Total  
Number of Participants  
[units: participants]
  167     166     166     165     664  
Age  
[units: years]
Mean ± Standard Deviation
  38.7  ± 9.80     38.2  ± 9.63     38.3  ± 9.69     39.5  ± 10.31     38.7  ± 9.85  
Gender  
[units: participants]
         
Female     36     31     39     38     144  
Male     131     135     127     127     520  
CD4+ T Cell Count [1]
[units: cells/mm3]
Mean ± Standard Deviation
  209.9  ± 125.10     222.6  ± 127.37     226.4  ± 136.64     202.9  ± 139.57     215.5  ± 132.34  
Plasma HIV-1 RNA Level  
[units: log10 copies/mL]
Mean ± Standard Deviation
  4.92  ± 0.64     4.94  ± 0.67     5.04  ± 0.68     5.06  ± 0.64     4.99  ± 0.66  
[1] For once daily (QD) soft gel capsule (SGC), N=165.



  Outcome Measures
  Show All Outcome Measures

1.  Primary:   Percentage of Subjects With Adverse Events of Diarrhea During the First 8 Weeks   [ Time Frame: Week 8 ]
  Hide Outcome Measure 1

Measure Type Primary
Measure Title Percentage of Subjects With Adverse Events of Diarrhea During the First 8 Weeks
Measure Description No text entered.
Time Frame Week 8  
Safety Issue Yes  

Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
All randomized subjects who received at least 1 dose of study drug.

Reporting Groups
  Description
LPV/r 800/200 mg QD Tablet lopinavir/ritonavir 800/200 mg once daily (QD) tablet
LPV/r 800/200 mg QD SGC (Through Week 8) lopinavir/ritonavir 800/200 mg once daily (QD) soft gel capsule (SGC)
LPV/r 400/100 mg BID Tablet lopinavir/ritonavir 400/100 mg twice daily (BID) tablet
LPV/r 400/100 mg BID SGC (Through Week 8) lopinavir/ritonavir 400/100 mg twice daily (BID) soft gel capsule (SGC)

Measured Values
    LPV/r 800/200 mg QD Tablet     LPV/r 800/200 mg QD SGC (Through Week 8)     LPV/r 400/100 mg BID Tablet     LPV/r 400/100 mg BID SGC (Through Week 8)  
Number of Participants Analyzed  
[units: participants]
  167     166     166     165  
Percentage of Subjects With Adverse Events of Diarrhea During the First 8 Weeks  
[units: Percentage of Subjects]
  49.1     54.8     44.6     49.7  


Statistical Analysis 1 for Percentage of Subjects With Adverse Events of Diarrhea During the First 8 Weeks
Groups [1] All groups
Method [2] Cochran-Mantel-Haenszel
P Value [3] >0.100
[1] Additional details about the analysis, such as null hypothesis and power calculation:
  Cochran-Mantel-Haenszel (CMH) test stratified by dosing regimen was used to assess the null hypothesis of no difference between the tablet and soft gel capsule (SGC). Sample size was 600 subjects (150 each in the 4 groups). Based on a projected 48% reporting treatment-emergent diarrhea in the QD arm and 32% in the BID arm within the SGC group, with a 12% reduction in the corresponding tablet groups, this sample size provided 80% power to determine a difference between the tablet and SGC.
[2] Other relevant method information, such as adjustments or degrees of freedom:
  No text entered.
[3] Additional information, such as whether or not the p-value is adjusted for multiple comparisons and the a priori threshold for statistical significance:
  No text entered.



2.  Primary:   Percentage of Subjects With Plasma Human Immunodeficiency Virus Type 1 (HIV-1) Ribonucleic Acid (RNA) Levels < 50 Copies/mL at Week 48   [ Time Frame: Week 48 ]

3.  Secondary:   Percentage of Subjects With Plasma Human Immunodeficiency Virus Type 1 (HIV-1) Ribonucleic Acid (RNA) Levels < 50 Copies/mL at Week 96   [ Time Frame: Week 96 (End of Study) ]

4.  Secondary:   Mean Change From Baseline to Week 96 in CD4+ T Cell Counts   [ Time Frame: Week 96 (End of Study) ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
  Hide Limitations and Caveats

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
No text entered.


  More Information