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Contraceptive Effectiveness of Sino-implant (II) in China

16 februari 2016 uppdaterad av: FHI 360

A Study to Evaluate the Contraceptive Effectiveness During the Third, Fourth and Fifth Year of Sino-implant (II) Use and the Pharmacokinetics Over Five Years of Use in Chinese Women

A cohort study to Evaluate the contraceptive effectiveness of Sino-implant (II) during the 3rd and 4th years of use in Chinese women

Studieöversikt

Status

Avslutad

Betingelser

Preventivmedel

Detaljerad beskrivning

A Study to Evaluate the Contraceptive Effectiveness during the Third, Fourth and Fifth Year of Sino-implant (II)Use and the Pharmacokinetics (PK) over Five Years of use in Chinese Women

Population: A total of 590 Chinese Sino-Implant (II) users between 20and 44 years of age enrolled in one of four prospective cohorts:

Cohort 1: n=20 women with insertion dates 3-5months prior to enrollment and followed for 2-6 months Cohort 2:n=20 women with insertion dates 9-11 months prior to enrollment and followed for 2-6 months Cohort 3: n=250 women with insertion dates 21-24 months prior to enrollment and followed through month 36 Cohort 4:n=300 women with insertion dates 33-36 months prior to enrollment and followed through month 6

Study Duration: 33 total months in the field: 3 months of participant recruitment(all cohorts); up to 27 months of pregnancy monitoring and PK blood sampling in Cohort 4 (up to 15 months in Cohort 3 and 6 months in Cohort 1 and Cohort 2);and 3 months of close-out activities.

For secondary PK outcomes, blood samples will be taken 2 to 6 months apart from each woman in Cohort 1 and Cohort 2; at enrollment, month 30 and month 36 from the first 20 consenting women in Cohort 3; and at enrollment and months 42, 48, 54, and 60 from the first 30 consenting women in Cohort 4.

Primary Objective: To evaluate the contraceptive effectiveness of Sino-implant (II) during the third and fourth years of use

Secondary Objectives:

To evaluate the contraceptive effectiveness of Sino-implant (II) during the fifth year of use.
To characterize the total and free levonorgestrel (LNG) plasma concentration-time profiles over five years following Sino-implant (II) insertion
To characterize the sex hormone binding globulin (SHBG) serum concentration-time profile and its relationship to total LNG levels over five years following Sino-implant (II) insertion

Studietyp

Observationell

Inskrivning (Faktisk)

538

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

Kina
- - Anyang, Kina
    - An Yang Population and Family Planning Service Station
  - Lingbao, Kina
    - Lingbao Population and Family Planning Service
  - Lushi, Kina
    - Lushi Family Planning Technical Service Station
  - Shanghai, Kina
    - Shanghai Institute of Planned Parenthood
  - Tongxiang, Kina
    - Tongxiang Population and Family Planning Service Station

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

20 år till 44 år (Vuxen)

Tar emot friska volontärer

Kön som är behöriga för studier

Kvinna

Testmetod

Icke-sannolikhetsprov

Studera befolkning

Study Population: Women who have received contraceptive implants from the Tongxiang, An Yang, Lingbao, and Lushi Family Planning Service Stations.

Beskrivning

Inclusion Criteria:

Have a confirmed Sino-implant (II) set in place;
Have a confirmed contraceptive implant insertion date consistent with the criteria for the cohort she is to be enrolled in;
Be aged between 20 and 44 years, inclusive;
Not wish to become pregnant in the next year;
No desire to get implant removal within the next year;
Be able to understand the information given to them and to make personal decisions on whether to participate or not in the study;
Consent to participation and sign an informed consent form;
Agree and be able to return to the clinic for follow-up visit(s).

Exclusion Criteria:

Acute liver disease or cirrhosis by self-report;
Benign or malignant tumor of the liver by self-report;
Use of rifampicin, and/or anticonvulsants (barbiturates, phenytoin, phenobarbital, carbamazepine, oxcarbazepine, primidone, topiramate), and/or herbal products containing St. John's wort (Hypericum perforatum) by self-report;7
Use of medications containing LNG or other hormones that impact LNG or SHBG disposition, e.g. treatment with LNG or oral contraceptives for bleeding disturbances by self-report;
Known HIV-positive status by self-report;
Any condition (social or medical) which in the opinion of the Investigator would make study participation unsafe, would interfere with adherence to study requirements, or complicate data interpretation.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

Antal grupper/kohorter

Kohorter och interventioner

Grupp / Kohort
Cohort 1 n=20 women with insertion dates 3-5months prior to enrollment and followed for 2-6 months
Cohort 2 n=20 women with insertion dates 9-11 months prior to enrollment and followed for 2-6 months
Cohort 3 n=250 women with insertion dates 21-24 months prior to enrollment and followed through month 36
Cohort 4 n=300 women with insertion dates 33-36 months prior to enrollment and followed through month 6

Vad mäter studien?

Primära resultatmått

Resultatmått	Åtgärdsbeskrivning	Tidsram
Pregnancy Pearl Index Tidsram: 27 months	Pregnancy Pearl Index (number of pregnancies per 100 woman-years) during the third and fourth years of use, respectively, in Cohort 3 and Cohort 4	27 months

Sekundära resultatmått

Resultatmått	Tidsram
Pregnancy Pearl Index during the fifth year of Sino implant (II) use Tidsram: 27 months	27 months
Total and free LNG plasma concentrations measured by a high-performance liquid chromatography with mass spectrometry assay Tidsram: 27 months	27 months
Serum SHBG concentrations measured by a chemiluminescence immunoassay Tidsram: 27 months	27 months

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

FHI 360

Samarbetspartners

Bill and Melinda Gates Foundation

Utredare

Huvudutredare: Markus Steiner, Ph.D., FHI 360

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 juli 2013

Primärt slutförande (Faktisk)

1 november 2015

Avslutad studie (Faktisk)

1 januari 2016

Studieregistreringsdatum

Först inskickad

3 september 2013

Först inskickad som uppfyllde QC-kriterierna