Format

Send to

Choose Destination
Contraception. 2016 Jun;93(6):507-12. doi: 10.1016/j.contraception.2016.02.004. Epub 2016 Feb 9.

A Phase III, single-arm study of LNG-IUS 8, a low-dose levonorgestrel intrauterine contraceptive system (total content 13.5mg) in postmenarcheal adolescents.

Author information

1
Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. Electronic address: kristina.gemzell@ki.se.
2
University Hospital Hamburg-Eppendorf, Hamburg, Germany.
3
Gynaecological Centre Dermout & Albicher, Alkmaar, The Netherlands.
4
Bayer Oy, Espoo, Finland.
5
Bayer HealthCare Pharmaceuticals, Newbury, UK.
6
VL-Medi Clinical Research Center, Väestöliitto, Helsinki, Finland.

Abstract

OBJECTIVE:

To assess the safety profile of the low-dose levonorgestrel intrauterine system (LNG-IUS) total content 13.5mg (average approximate release rate 8μg/24h over the first year; LNG-IUS 8; Jaydess®) in adolescents.

STUDY DESIGN:

In a Phase III study in 36 European centers, 304 healthy nulliparous or parous postmenarcheal adolescents (12-17years) received LNG-IUS 8 for 12months. The primary outcome was the incidence of treatment-emergent adverse events (TEAEs). Secondary outcomes included: serious TEAEs, adverse events of special interest, overall user satisfaction, discontinuation rate at 12months, and Pearl Index.

RESULTS:

LNG-IUS 8 placement was successful in 303/304 participants (99.7%). Overall, 82.6% of participants reported TEAEs, and serious TEAEs and serious study drug-related TEAEs were reported by 7.6% and 1.0% of participants, respectively. No cases of pelvic inflammatory disease, ectopic pregnancy, or uterine perforation were reported. No pregnancies were reported during the 12-month study. At Month 12/study end, the overall user satisfaction rate was 83.9%. Overall, 51 participants (16.8%) prematurely discontinued the study before 12months; 13.8% of participants discontinued owing to TEAEs.

CONCLUSIONS:

No new or unexpected safety events were associated with the low-dose LNG-IUS 8. The safety profile of LNG-IUS 8 in adolescents was consistent with that previously reported in adults. The high overall user-satisfaction rate at study end and the low discontinuation rate over 12months demonstrate that LNG-IUS 8 is a highly acceptable contraceptive method among adolescents.

IMPLICATIONS:

This study is the first to assess the low-dose levonorgestrel intrauterine system LNG-IUS 8 (average approximate release rate 8μg/24h over the first year and total content 13.5mg) specifically in females<18years of age and confirms the safety and efficacy of LNG-IUS 8 in an adolescent population.

TRIAL REGISTRATION:

ClinicalTrials.gov NCT01434160.

KEYWORDS:

Adolescent; Contraception; Intrauterine contraception; LNG-IUS; Nulliparous

[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center