Recent Updates
Recently added Catalysts

Kaletra

Phase 2

HIV Infections | Small molecule | Infectious Disease |Abbott Laboratories|Last Updated: Apr 7, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment306

FDA Designations

No designations recorded

Clinical trial landscape

Kaletra · 3 trials · 1 indication

Phase 2 3
NCT00752856Raltegravir + Lopinavir/Ritonavir Versus Efavirenz + Tenofovir + Emtricitabine in Treatment Naive PatientsHIV Infections
COMPLETED51 Analytics
NCT00424814Prevention of HIV1 Mother to Child Transmission Without Nucleoside Analogue Reverse Transcriptase Inhibitors in the Pre-partum Phase. ANRS 135 PrimevaHIV Infections
COMPLETED105 Analytics
NCT00075231A Simplified Kaletra® (Lopinavir/Ritonavir)-Based Therapy Versus a Sustiva® (Efavirenz)-Based Standard of Care in Previously Non-Treated HIV-Infected SubjectsHIV Infections
COMPLETED150 Analytics
PHASE2COMPLETED
Raltegravir + Lopinavir/Ritonavir Versus Efavirenz + Tenofovir + Emtricitabine in Treatment Naive Patients
HIV InfectionsUnlock trial analytics
PHASE2COMPLETED
Prevention of HIV1 Mother to Child Transmission Without Nucleoside Analogue Reverse Transcriptase Inhibitors in the Pre-partum Phase. ANRS 135 Primeva
HIV InfectionsUnlock trial analytics
PHASE2COMPLETED
A Simplified Kaletra® (Lopinavir/Ritonavir)-Based Therapy Versus a Sustiva® (Efavirenz)-Based Standard of Care in Previously Non-Treated HIV-Infected Subjects
HIV InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

To Compare the Phase 1 Viral Decay Rates Between LPV/r + RAL vs. EFV/TDF/FTC Treatment Combinations.
Baseline, days 2, 7, 10, 14

Repeated HIV RNA measured at different time points (baseline, days 2, 7, 10, 14) will be treated as the outcome variable in a linear mixed-effects model. The primary fixed effects will include time, treatment group, treatment group-by-time interaction; random effects will include both intercept and slope allowing each subject to have individual baseline viral load and viral decay (rate of decrease in viral load following initiation of antiretroviral therapy). The treatment group-by- time interaction term in the model will indicate the difference in viral decay rates between the two treatment groups. Baseline covariate adjustment will be included if necessary.

Proportion of mother with plasma HIV1 below 200 copies per ml after 8 weeks of treatment
W8
Proportion of subjects with a plasma HIV RNA level below 50 copies/mL at Week 96.

Secondary Endpoints

Viral Suppression Efficacy at 48 Weeks
48 weeks
Compare Early Activated CD4+ T-cell Recovery Rates From Baseline to Week 4.
Baseline to Week 4
Compare Late Activated CD4+ T-cell Recovery Rates Between Treatment Regimens From Baseline to Week 48
48 weeks
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
1 - Kaletra + Isentress taken twice dailyEXPERIMENTALKaletra (lopinavir/ritonavir 400/100 mg) + Isentress (Raltegravir 400 mg) twice-daily
2 - Atripla taken once dailyACTIVE_COMPARATORSustiva (EFV 600 mg), Viread (TDF 300 mg) and Emtriva (FTC 200 mg) taken as Atripla® once-daily
1EXPERIMENTALKaletra (lopinavir/ritonavir)
2ACTIVE_COMPARATORKaletra (lopinavir/ritonavir) + Combivir (zidovudine/lamivudine)

Interventions

NameTypeDescription
Kaletra + IsentressDRUGkaletra 2 tabs twice a day + Raltegravir 1 tab twice a day
AtriplaDRUGAtripla 1 tab once a day
Kaletra (lopinavir/ritonavir)DRUG(200/50 mg x2)x 2/d= 2 pills twice daily
Kaletra (lopinavir/ritonavir) + Combivir (zidovudine/lamivudine)DRUGKaletra (lopinavir/ritonavir): (200/50 mg x2)x 2/d= 2 pills twice daily Combivir (zidovudine/lamivudine): (300/150mg) x 2/d=1 pill twice daily
Kaletra® (lopinavir/ritonavir)DRUG -
Combivir® (lamivudine, zidovudine)DRUG -
Sustiva® (efavirenz)DRUG -
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites6

Inclusion Criteria: * Documented HIV-1 infection. * Treatment naïve (defined as having never received any HIV antiretroviral agents in past). * CD4+ T-cell count greater than or equal to 50 cells/mm3 * HIV viral load greater than or equal to 5,000 copies/mL * Laboratory values obtained by screening...

Countries:United StatesFrance
Unlock Eligibility Criteria

Frequently asked questions about Kaletra

What is Kaletra used for in HIV Infections?

Kaletra is a small molecule drug being developed for the treatment of HIV Infections. It is a combination of lopinavir and ritonavir, and it is currently in Phase 2 clinical development. The drug is being studied in previously untreated HIV-infected patients and in the prevention of mother-to-child transmission of HIV.

What does Kaletra target?

Kaletra contains lopinavir and ritonavir, which are protease inhibitors. These drugs target the HIV protease enzyme, which is essential for the virus to mature and become infectious. By inhibiting this enzyme, Kaletra helps to reduce the viral load in patients with HIV Infections.

Who makes Kaletra?

Kaletra is being developed by Abbott Laboratories, a company traded on the stock exchange under the ticker symbol ABT. The drug is currently in Phase 2 clinical trials for the treatment of HIV Infections.

What phase is Kaletra in?

Kaletra is in Phase 2 clinical development for the treatment of HIV Infections. It is an investigational drug and has not yet been approved by regulatory authorities. All three clinical trials for Kaletra have been completed, with a total enrollment of 306 participants.

What clinical trials is Kaletra in?

Kaletra has been studied in three completed Phase 2 clinical trials. These include NCT00075231, which compared Kaletra-based therapy to efavirenz-based standard of care in untreated HIV patients, NCT00424814, which studied prevention of mother-to-child HIV transmission, and NCT00752856, which compared raltegravir plus Kaletra to efavirenz plus tenofovir and emtricitabine.

Is Kaletra the same as lopinavir/ritonavir?

Kaletra is a combination drug that contains lopinavir and ritonavir. It is often referred to by its components, lopinavir/ritonavir. The drug is being developed by Abbott Laboratories and is currently in Phase 2 clinical trials for HIV Infections.