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Efficacy, safety and sustainability of treatment continuation and results of an oral contraceptive containing 30 mcg ethinyl estradiol and 2 mg chlormadinone acetate, in long-term usage (up to 45 cycles)--an open-label, prospective, noncontrolled, office-based Phase III study.
Contraception. 2008 May; 77(5):337-43.C

Abstract

BACKGROUND

This open-label, noncontrolled study assessed the long-term efficacy and tolerability of the monophasic combined low-dose oral contraceptive (OC) ethinyl estradiol (EE) 30 mcg+chlormadinone acetate (CMA) 2 mg (Belara).

STUDY DESIGN

In total, 781 women who had already taken EE 30 mcg+CMA 2 mg for 24 cycles in a previous Phase III study were assessed for up to 45 cycles.

RESULTS

Over 23,033 cycles, the Pearl Index was 0.16 (95% confidence interval, 0.04-0.42). Approximately 86% of women had regular withdrawal bleeding in each cycle, while incidence of intracyclic bleedings (1.6-6.4%) and proportion of women with amenorrhea (4%) were low. The incidence of acne decreased from 13.8% to 5.7%, while rates of hirsutism, alopecia and seborrhea remained low (< or =4%) throughout this study. The most frequent adverse events were consistent with OC treatment, and no unexpected events occurred. No changes in mean blood pressure and pulse rate were observed during the study, and there were no clinically relevant changes in liver or hematological parameters, hemostasis or carbohydrate metabolism. The incidence of pathological findings in gynecological examination was low and decreased over time.

CONCLUSION

EE 30 mcg+CMA 2 mg was an effective and well-tolerated OC, with beneficial effects on cycle stability, intracyclic bleeding, amenorrhea and signs of androgenization that were maintained during long-term treatment for up to 5 years. There was no evidence of an increased risk of thromboembolic events, atherogenic disease or cervical cancer, suggesting that 30 EE mcg+CMA 2 mg is highly suitable for long-term use.

Authors+Show Affiliations

Department Ob/Gyn, Clinic for Gynaecologic Endocrinology and Reproductive Medicine, University Hospital Freiburg, Freiburg, Germany. hpz@frk.ukl.uni-freiburg.deNo affiliation info available

Pub Type(s)

Clinical Trial, Phase III
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18402849

Citation

Zahradnik, Hans Peter, and Aida Hanjalic-Beck. "Efficacy, Safety and Sustainability of Treatment Continuation and Results of an Oral Contraceptive Containing 30 Mcg Ethinyl Estradiol and 2 Mg Chlormadinone Acetate, in Long-term Usage (up to 45 Cycles)--an Open-label, Prospective, Noncontrolled, Office-based Phase III Study." Contraception, vol. 77, no. 5, 2008, pp. 337-43.
Zahradnik HP, Hanjalic-Beck A. Efficacy, safety and sustainability of treatment continuation and results of an oral contraceptive containing 30 mcg ethinyl estradiol and 2 mg chlormadinone acetate, in long-term usage (up to 45 cycles)--an open-label, prospective, noncontrolled, office-based Phase III study. Contraception. 2008;77(5):337-43.
Zahradnik, H. P., & Hanjalic-Beck, A. (2008). Efficacy, safety and sustainability of treatment continuation and results of an oral contraceptive containing 30 mcg ethinyl estradiol and 2 mg chlormadinone acetate, in long-term usage (up to 45 cycles)--an open-label, prospective, noncontrolled, office-based Phase III study. Contraception, 77(5), 337-43. https://doi.org/10.1016/j.contraception.2007.12.007
Zahradnik HP, Hanjalic-Beck A. Efficacy, Safety and Sustainability of Treatment Continuation and Results of an Oral Contraceptive Containing 30 Mcg Ethinyl Estradiol and 2 Mg Chlormadinone Acetate, in Long-term Usage (up to 45 Cycles)--an Open-label, Prospective, Noncontrolled, Office-based Phase III Study. Contraception. 2008;77(5):337-43. PubMed PMID: 18402849.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Efficacy, safety and sustainability of treatment continuation and results of an oral contraceptive containing 30 mcg ethinyl estradiol and 2 mg chlormadinone acetate, in long-term usage (up to 45 cycles)--an open-label, prospective, noncontrolled, office-based Phase III study. AU - Zahradnik,Hans Peter, AU - Hanjalic-Beck,Aida, Y1 - 2008/03/04/ PY - 2007/10/25/received PY - 2007/12/02/revised PY - 2007/12/10/accepted PY - 2008/4/12/pubmed PY - 2008/8/1/medline PY - 2008/4/12/entrez SP - 337 EP - 43 JF - Contraception JO - Contraception VL - 77 IS - 5 N2 - BACKGROUND: This open-label, noncontrolled study assessed the long-term efficacy and tolerability of the monophasic combined low-dose oral contraceptive (OC) ethinyl estradiol (EE) 30 mcg+chlormadinone acetate (CMA) 2 mg (Belara). STUDY DESIGN: In total, 781 women who had already taken EE 30 mcg+CMA 2 mg for 24 cycles in a previous Phase III study were assessed for up to 45 cycles. RESULTS: Over 23,033 cycles, the Pearl Index was 0.16 (95% confidence interval, 0.04-0.42). Approximately 86% of women had regular withdrawal bleeding in each cycle, while incidence of intracyclic bleedings (1.6-6.4%) and proportion of women with amenorrhea (4%) were low. The incidence of acne decreased from 13.8% to 5.7%, while rates of hirsutism, alopecia and seborrhea remained low (< or =4%) throughout this study. The most frequent adverse events were consistent with OC treatment, and no unexpected events occurred. No changes in mean blood pressure and pulse rate were observed during the study, and there were no clinically relevant changes in liver or hematological parameters, hemostasis or carbohydrate metabolism. The incidence of pathological findings in gynecological examination was low and decreased over time. CONCLUSION: EE 30 mcg+CMA 2 mg was an effective and well-tolerated OC, with beneficial effects on cycle stability, intracyclic bleeding, amenorrhea and signs of androgenization that were maintained during long-term treatment for up to 5 years. There was no evidence of an increased risk of thromboembolic events, atherogenic disease or cervical cancer, suggesting that 30 EE mcg+CMA 2 mg is highly suitable for long-term use. SN - 0010-7824 UR - https://www.unboundmedicine.com/medline/citation/18402849/Efficacy_safety_and_sustainability_of_treatment_continuation_and_results_of_an_oral_contraceptive_containing_30_mcg_ethinyl_estradiol_and_2_mg_chlormadinone_acetate_in_long_term_usage__up_to_45_cycles___an_open_label_prospective_noncontrolled_office_based_Phase_III_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0010-7824(08)00009-7 DB - PRIME DP - Unbound Medicine ER -