Clinical Trials Logo

Clinical Trial Summary

This study is a biphasic steady state pharmacokinetic and pharmacodynamic study of TFV and FTC in healthy women comparing the drug levels and activity in the absence (first phase) and then the presence (second phase) of DMPA. The investigators will recruit 12 healthy women aged 18-45 who are HIV-negative and at low risk for acquiring HIV.


Clinical Trial Description

The investigators hypothesize that a drug interaction exists between DMPA and tenofovir/emtricitabine, such that levels of tenofovir (TFV) and emtricitabine (FTC) in cervicovaginal fluid, rectal fluid, and blood plasma, and levels of the active metabolites of TFV and FTC in cervical tissue and peripheral blood mononuclear cells will be significantly lower when women are using DMPA than when they are using no hormonal contraception. The investigators secondarily hypothesize that ex vivo HIV replication will be less suppressed in cervical tissue and cervicovaginal fluid when women are using the co-formulated pre-exposure prophylaxis oral pill containing tenofovir disoproxil fumarate (TDF), the prodrug of tenofovir, and FTC concurrently with the contraceptive injection DMPA as compared to when they are on TDF/FTC alone. This study is a biphasic steady state pharmacokinetic and pharmacodynamic study of TFV and FTC in healthy women comparing the drug levels and activity in the absence (first phase) and then the presence (second phase) of DMPA. The investigators will recruit 12 healthy women aged 18-45 who are HIV-negative and at low risk for acquiring HIV. Participants will take TDF/FTC for 14 days, after which drug levels will be measured and DMPA administered. After at least a 2 week washout period for TDF/FTC, participants will again take TDF/FTC for 14 days, and drug levels will be measured again. HIV replication activity will also be measured in cervicovaginal fluid and cervical tissue at baseline before starting TDF/FTC, after 14 days of TDF/FTC, and then after the second 14 days of TDF/FTC in the presence of DMPA. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03197961
Study type Interventional
Source University of Pittsburgh
Contact
Status Completed
Phase Early Phase 1
Start date November 17, 2017
Completion date December 1, 2020

See also
  Status Clinical Trial Phase
Completed NCT02577601 - Impact of Combined Hormonal Contraceptives on UPA Phase 4
Completed NCT03153644 - Improving Contraceptive Care for Women With Medical Conditions
Completed NCT04112095 - Adherence With Continuous-dose Oral Contraceptive: Evaluation of Self-Selection and Use Phase 3
Recruiting NCT05521646 - Implementing Best Practice Postpartum Contraceptive Services Through a Quality Improvement Initiative N/A
Active, not recruiting NCT04291001 - Ovarian Function With ENG Implant and UPA Use Early Phase 1
Completed NCT04568980 - Assessment of Contraceptive Safety and Effectiveness in Cystic Fibrosis
Completed NCT03438682 - Real World Effectiveness and Safety of Hysteroscopic (Essure®) Compared to Laparoscopic Sterilization
Active, not recruiting NCT01948882 - Evaluation of Safety and Effectiveness of the Essure (Model ESS505) Device to Prevent Pregnancy in Women N/A
Enrolling by invitation NCT04997499 - Adolescent Subcutaneous (SQ) Injection Video Validation N/A
Recruiting NCT03589040 - Darunavir and Rilpivirine Interactions With Etonogestrel Contraceptive Implant Phase 2
Completed NCT04463680 - Rifampin and the Contraceptive Implant Phase 4
Completed NCT03154125 - Sayana® Press Extension Study Phase 3
Withdrawn NCT03725358 - A Cluster-RCT to Increase the Uptake of LARCs Among Adolescent Females and Young Women in Cameroon. N/A
Completed NCT02957630 - "E4/DRSP Endocrine Function, Metabolic Control and Hemostasis Study" Phase 1/Phase 2
Completed NCT02456584 - Pharmacodynamics and Pharmacokinetics Study of Existing DMPA Contraceptive Methods Phase 1
Completed NCT02718222 - Impact and Performance of Institutionalizing Immediate Post-partum IUD Services N/A
Recruiting NCT02121067 - LNG-IUS at 2 Weeks Postpartum Phase 4
Terminated NCT02169869 - Immediate Postplacental IUD Insertion N/A
Recruiting NCT02292056 - Medication Safety and Contraceptive Counseling for Reproductive Aged Women With Psychiatric Conditions N/A
Withdrawn NCT01930994 - Kenya Sino-implant (II) PK Study N/A