Pregnant WomenTDF-PTPNCT02020083
Placental Transfer of Tenofovir
An observational study of Pregnant Women, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
Trial summary
The purposes of this study are to determine whether transporters expression levels and drug interaction between TDF and FTC could contribute to modulate the placental transfer of this drug or. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Pregnant Women
- How many people
- 369 participants
- Where
- 1 siteFrance
- Study dates
- Feb 2013to 30 Jun 2020
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Study population: Pregnant women (at term >37 to 41 weeks of gestational age) without complications during pregnancy
Who may be able to join
- Major Patients > or = 18 years old
- At term between 37 and 41 weeks of gestational age
- Uncomplicated pregnancy
- Informed Consent Form signed
Who cannot join
- Women HIV+, HBV+ or HBC+
- Women with cardiovascular diseases such as diabetes or preeclampsia, IUGR
- Women who had taken medications during pregnancy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Study of Placental Transfer of Tenofovir and Its Factors of Variability Using the Human Placental Perfusion Model
The purposes of this study are to determine whether transporters expression levels and drug interaction between TDF and FTC could contribute to modulate the placental transfer of this drug or. To test this hypothesis, an ex vivo model known as "the perfused ex vivo cotyledon model" allows to reproduce the conditions of the third trimester of pregnancy
Read the detailed description
Nowadays, mother-to-child HIV transmission is the main cause of paediatric HIV infections. Yet, this way of transmission is effectively limited by the use of antiretroviral therapies during pregnancy in HIV infected women. The study TEmAA (ANRS 12109) we conducted allowed us to suggest a therapeutic scheme of administration of the association tenofovir disoproxil fumarate (TDF) - emtricitabine (FTC) to reduce the risk of postpartum resistance that may occur with the administration of a single dose of nevirapine before delivery. However, we also observed a large interindividual variability of TDF in vivo placental transfer that remained unexplained. Placental membrane transporters, including efflux transporters belonging the ABC transporter superfamily and uptake transporters, may constitute a source of variability. In this case, we showed such an association for maraviroc with a significant inverse correlation between its clearance index and the placental expression level of several efflux transporters of the ABCC/MRP family. Regarding TDF, it has been shown that this drug is a substrate of several efflux transporters (ABCC2/MRP2, ABCC4/MRP4, ABCC10/MRP7) and an uptake transporter (hOAT3). As these transporters are expressed on the placental barrier, it may be hypothesized that their expression levels could contribute to modulate the placental transfer of this drug. To test this hypothesis, an ex vivo model known as "the perfused ex vivo cotyledon model" allows to reproduce the conditions of the third trimester of pregnancy. Our first aim is to evaluate the potential effect of ABCC2, ABCC4, ABCC10 and hOAT3 placental expression on TDF placental transfer (First year). We also want to investigate whether a potential interaction between TDF and FTC could take part to variability.
- Conditions
- Pregnant Women
- Keywords
- VIH ; Placental transfer ; Tenofovir ; Emtricitabine ; Membrane transporter
What is being measured
The primary outcome is the main question the study is designed to answer.
Determination of ABC transporters gene expression levels by quantitative RT-PCR
Placental villi were extracted To study the expression level of transporters that may affect the placental transfer. Gene expression was evaluated for each sample using the cycle threshold value (CT), defined as the fraction cycle number at which the fluorescence generated by SYBR green dye-amplicon complex formation passes a fixed threshold above the baseline.
Measured: 1 hour
Secondary outcomes (1)
Fetal transfer rate (%)of emtricitabine alone, or Tenofovir alone, or in association
Placental perfusion with Emtricitabine alone, then with Tenofovir alone, and together. Fetal transfer rate of (FTR) was calculated as follow : (Cf*Vf)*100/ ((Cf*Vf)+(Cm*Vm))where Cf denotes the fetal concentration, Vf, the volume of fetal perfusate, Cm, the maternal concentration and Vm, the volume maternal perfusate.
Measured: 3 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Dec 2013 (estimated)
- Study startFeb 2013
- Primary completion4 Jun 2020
- Study completion30 Jun 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Pregnant WomenStudies of the same condition, open and under way.
- More trials run by Assistance Publique - Hôpitaux de ParisThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 369 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assistance Publique - Hôpitaux de Paris
- Sponsor type
- University, hospital or other
- Collaborators
- URC-CIC Paris Descartes Necker Cochin
- Responsible party
- Sponsor
- Investigators
- Jean Marc Treluyer, MD, PhD, Principal investigator, APHP
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02020083
- Sponsor's protocol ID
- NI121204
- Acronym
- TDF-PTP
- Status last verified
- Feb 2026
- First submitted
- 4 Jul 2013
- Last updated
- 13 Feb 2026
- Results posted
- No
- Data monitoring committee
- No
Publications
Hirt D, Urien S, Ekouevi DK, Rey E, Arrive E, Blanche S, Amani-Bosse C, Nerrienet E, Gray G, Kone M, Leang SK, McIntyre J, Dabis F, Treluyer JM; ANRS 12109. Population pharmacokinetics of tenofovir in HIV-1-infected pregnant women and their neonates (ANRS 12109). Clin Pharmacol Ther. 2009 Feb;85(2):182-9. doi: 10.1038/clpt.2008.201. Epub 2008 Nov 5.
PubMed 18987623Vinot C, Gavard L, Treluyer JM, Manceau S, Courbon E, Scherrmann JM, Decleves X, Duro D, Peytavin G, Mandelbrot L, Giraud C. Placental transfer of maraviroc in an ex vivo human cotyledon perfusion model and influence of ABC transporter expression. Antimicrob Agents Chemother. 2013 Mar;57(3):1415-20. doi: 10.1128/AAC.01821-12. Epub 2013 Jan 7.
PubMed 23295922
Study at a glance
From the registry record, last updated by the sponsor on 13 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Study of Placental Transfer of Tenofovir and Its Factors of Variability Using the Human Placental Perfusion Model
- ClinicalTrials.gov ID
- NCT02020083
- Acronym / sponsor ID
- TDF-PTP / NI121204
- Conditions
- Pregnant Women
- Keywords
- VIH ; Placental transfer ; Tenofovir ; Emtricitabine ; Membrane transporter
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 369 participants (actual)
- Lead sponsor
- Assistance Publique - Hôpitaux de ParisUniversity, hospital or other
- Collaborators
- URC-CIC Paris Descartes Necker Cochin
- Study start
- Feb 2013 (actual)
- Primary completion
- 4 Jun 2020 (actual)
- Study completion
- 30 Jun 2020 (actual)
- First posted
- 24 Dec 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purposes of this study are to determine whether transporters expression levels and drug interaction between TDF and FTC could contribute to modulate the placental transfer of this drug or. To test this hypothesis, an ex vivo model known as "the perfused ex vivo cotyledon model" allows to reproduce the conditions of the third trimester of pregnancy
Detailed description
Nowadays, mother-to-child HIV transmission is the main cause of paediatric HIV infections. Yet, this way of transmission is effectively limited by the use of antiretroviral therapies during pregnancy in HIV infected women. The study TEmAA (ANRS 12109) we conducted allowed us to suggest a therapeutic scheme of administration of the association tenofovir disoproxil fumarate (TDF) - emtricitabine (FTC) to reduce the risk of postpartum resistance that may occur with the administration of a single dose of nevirapine before delivery. However, we also observed a large interindividual variability of TDF in vivo placental transfer that remained unexplained. Placental membrane transporters, including efflux transporters belonging the ABC transporter superfamily and uptake transporters, may constitute a source of variability. In this case, we showed such an association for maraviroc with a significant inverse correlation between its clearance index and the placental expression level of several efflux transporters of the ABCC/MRP family. Regarding TDF, it has been shown that this drug is a substrate of several efflux transporters (ABCC2/MRP2, ABCC4/MRP4, ABCC10/MRP7) and an uptake transporter (hOAT3). As these transporters are expressed on the placental barrier, it may be hypothesized that their expression levels could contribute to modulate the placental transfer of this drug. To test this hypothesis, an ex vivo model known as "the perfused ex vivo cotyledon model" allows to reproduce the conditions of the third trimester of pregnancy. Our first aim is to evaluate the potential effect of ABCC2, ABCC4, ABCC10 and hOAT3 placental expression on TDF placental transfer (First year). We also want to investigate whether a potential interaction between TDF and FTC could take part to variability.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Pregnant women (at term >37 to 41 weeks of gestational age) without complications during pregnancy
Key inclusion criteria (4 listed)
- Major Patients > or = 18 years old
- At term between 37 and 41 weeks of gestational age
- Uncomplicated pregnancy
- Informed Consent Form signed
Key exclusion criteria (3 listed)
- Women HIV+, HBV+ or HBC+
- Women with cardiovascular diseases such as diabetes or preeclampsia, IUGR
- Women who had taken medications during pregnancy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Determination of ABC transporters gene expression levels by quantitative RT-PCR
Time frame: 1 hour
Placental villi were extracted To study the expression level of transporters that may affect the placental transfer. Gene expression was evaluated for each sample using the cycle threshold value (CT), defined as the fraction cycle number at which the fluorescence generated by SYBR green dye-amplicon complex formation passes a fixed threshold above the baseline.
1 secondary outcome
Fetal transfer rate (%)of emtricitabine alone, or Tenofovir alone, or in association
Time frame: 3 hours
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Feb 2026.
- Background: PubMed 18987623Hirt D, Urien S, Ekouevi DK, Rey E, Arrive E, Blanche S, Amani-Bosse C, Nerrienet E, Gray G, Kone M, Leang SK, McIntyre J, Dabis F, Treluyer JM; ANRS 12109. Population pharmacokinetics of tenofovir in HIV-1-infected pregnant women and their neonates (ANRS 12109). Clin Pharmacol Ther. 2009 Feb;85(2):182-9. doi: 10.1038/clpt.2008.201. Epub 2008 Nov 5.
- Background: PubMed 23295922Vinot C, Gavard L, Treluyer JM, Manceau S, Courbon E, Scherrmann JM, Decleves X, Duro D, Peytavin G, Mandelbrot L, Giraud C. Placental transfer of maraviroc in an ex vivo human cotyledon perfusion model and influence of ABC transporter expression. Antimicrob Agents Chemother. 2013 Mar;57(3):1415-20. doi: 10.1128/AAC.01821-12. Epub 2013 Jan 7.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jean Marc Treluyer, MD, PhD principal investigator
APHP
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Pregnant Women, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 13 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Determination of ABC transporters gene expression levels by quantitative RT-PCR (time frame: 1 hour). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02020083, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Feb 2026.