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The Effect of Pregnancy on the Pharmacokinetics of the Kaletra Tablet

The Effect of Pregnancy on the Pharmacokinetics of the Kaletra Tablet: A Longitudinal Investigation in the Second and Third Trimesters Including Empiric Dosage Adjustment

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00766818
Enrollment
12
Registered
2008-10-06
Start date
2007-01-31
Completion date
2010-03-31
Last updated
2011-05-13

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

Conditions

Pregnancy, HIV

Brief summary

In this study, we are looking at blood concentrations of Kaletra in HIV positive patients during pregnancy. The patients will come in for 4 visits lasting \ 24hrs. These visits take place at 20-24 weeks, 30 weeks, 32 weeks and 8 weeks post-partum. At the end of vist 2 (week 30), we will increase your dose to 2 adult Kaletra tablets, and one pediatric Kaletra tablet (total dose 500/125mg). The dose will remain increased until you are 2 weeks post partum, then it will return to the standard 2 adult tablets (400/100mg).

Interventions

Kaletra 400/100mg BID, then increase at 30weeks to 500/125mg BID

Sponsors

University of North Carolina, Chapel Hill
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* HIV positive * Pregnant (\<22 weeks) * Currently taking or planning to start Kaletra * ≥18 years of age

Exclusion criteria

* Active opportunistic or serious bacterial infection at the time of entry * Past or present obstetrical complications (including, but not limited to: placentia previa, eclampsia, confirmed birth defects, multiple gestation pregnancies) * Unable to maintain medication adherence, defined as ≥ 80% of doses taken between visits * Currently receiving or expected to receive other protease inhibitors in conjunction with Kaletra® * HIV genotype showing accumulation of protease inhibitor mutations expected to result in virologic failure on Kaletra® OR documented virologic failure on Kaletra®-containing regimen attributable to the Kaletra® component * Chronic hepatitis B and/or C virus infection * Cushing's Syndrome * Untreated hypothyroidism or hyperthyroidism * Serum Creatinine \> 1.5 mg/dL * Amylase 1.5 times ULN and/or abnormal lipase * Direct or total bilirubin levels \> Grade 1 * ALT/AST \> Grade 2 (based on the NIH Division of AIDS (DAIDS) Table for Grading the Severity of Adverse Events * Bicarbonate \> Grade 2 (DAIDS) * Hematology \> Grade 2 (DAIDS), except for anemia: exclude only women with Hb\< 9 g/dL and/or HCT , 27.3% (\< 8.5 mg/dL and/or HCT , 25.6% if currently on ZDV) at screening; all subjects with anemia who enroll in the study must be receiving or start hematinics, including iron and folate supplements, immediately upon enrollment and continue until anemia resolves or end of pregnancy. The hematinic supplements may be discontinued at the discretion of the investigator if they consider continuation would not be in the best interest of the subject. * Receiving the following drugs: astemizole, terfenadine, rifampin, cisapride, ergot derivatives, simvastatin, lovastatin, St. John's wort, pimozide, midazolam, triazolam, carbamezapine, phenobarbital, phenytoin, or dexamethasone

Design outcomes

Primary

MeasureTime frame
To compare the C12h and AUC0-12h of protein bound and unbound blood plasma lopinavir (LPV) using standard doses during the second and third trimesters of pregnancy.20-24 weeks, 30weeks, 32 weeks gestation and 8 weeks postpartum
To compare the C12h and AUC0-12h of protein bound and unbound blood plasma LPV between standard doses (400mg/100mg BID) and increased doses (500/125mg BID) of Kaletra® during the third trimester of pregnancy.20-24weeks, 30 weeks, 32 weeks gestation, 8weeks postpartum

Secondary

MeasureTime frame
To compare the C12h and AUC0-12h of protein bound and unbound blood plasma ritonavir (RTV) using standard doses during the second and third trimesters of pregnancy.20-24weeks, 30weeks, 32weeks gestation, 8 weeks postpartum

Countries

United States

Outcome results

None listed

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