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Minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and concomitant substitution with recombinant FSH: a pilot study.
Hum Reprod. 2005 Mar; 20(3):642-8.HR

Abstract

BACKGROUND

The use of the natural cycle for IVF offers the advantage of a patient-friendly and low-risk protocol. Its effectiveness is limited, but may be improved by using a GnRH antagonist to prevent untimely LH surges.

METHODS

In this pilot study, minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and simultaneous substitution with recombinant FSH was applied for a maximum of three cycles per patient. Main outcome measures were pregnancy rates per started cycle and cumulative pregnancy rates after three cycles.

RESULTS

A total of 50 patients completed 119 cycles (2.4 per patient). Fifty-two embryo transfers resulted in 17 ongoing pregnancies [14.3% per started cycle; 32.7% per embryo transfer; 95% confidence interval (CI) 7.9-20.7% and 19.7-45.7%, respectively]. One dizygotic twin pregnancy occurred after transfer of two embryos, the other pregnancies were singletons. The cumulative ongoing pregnancy rate after three cycles was 34% (95% CI 20.6-47.4%). Live birth rate was 32% per patient (95% CI 18.8-45.2%).

CONCLUSIONS

Pregnancy rates after IVF with minimal, late follicular phase stimulation are encouraging. Considering the low-risk and patient-friendly nature of this protocol, it may be a feasible alternative to IVF with ovarian hyperstimulation.

Authors+Show Affiliations

Section of Reproductive Medicine, Department of Obstetrics and Gynaecology, University Hospital Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

15608031

Citation

Pelinck, M J., et al. "Minimal Stimulation IVF With Late Follicular Phase Administration of the GnRH Antagonist Cetrorelix and Concomitant Substitution With Recombinant FSH: a Pilot Study." Human Reproduction (Oxford, England), vol. 20, no. 3, 2005, pp. 642-8.
Pelinck MJ, Vogel NE, Hoek A, et al. Minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and concomitant substitution with recombinant FSH: a pilot study. Hum Reprod. 2005;20(3):642-8.
Pelinck, M. J., Vogel, N. E., Hoek, A., Arts, E. G., Simons, A. H., & Heineman, M. J. (2005). Minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and concomitant substitution with recombinant FSH: a pilot study. Human Reproduction (Oxford, England), 20(3), 642-8.
Pelinck MJ, et al. Minimal Stimulation IVF With Late Follicular Phase Administration of the GnRH Antagonist Cetrorelix and Concomitant Substitution With Recombinant FSH: a Pilot Study. Hum Reprod. 2005;20(3):642-8. PubMed PMID: 15608031.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and concomitant substitution with recombinant FSH: a pilot study. AU - Pelinck,M J, AU - Vogel,N E A, AU - Hoek,A, AU - Arts,E G J M, AU - Simons,A H M, AU - Heineman,M J, Y1 - 2004/12/17/ PY - 2004/12/21/pubmed PY - 2005/7/22/medline PY - 2004/12/21/entrez SP - 642 EP - 8 JF - Human reproduction (Oxford, England) JO - Hum Reprod VL - 20 IS - 3 N2 - BACKGROUND: The use of the natural cycle for IVF offers the advantage of a patient-friendly and low-risk protocol. Its effectiveness is limited, but may be improved by using a GnRH antagonist to prevent untimely LH surges. METHODS: In this pilot study, minimal stimulation IVF with late follicular phase administration of the GnRH antagonist cetrorelix and simultaneous substitution with recombinant FSH was applied for a maximum of three cycles per patient. Main outcome measures were pregnancy rates per started cycle and cumulative pregnancy rates after three cycles. RESULTS: A total of 50 patients completed 119 cycles (2.4 per patient). Fifty-two embryo transfers resulted in 17 ongoing pregnancies [14.3% per started cycle; 32.7% per embryo transfer; 95% confidence interval (CI) 7.9-20.7% and 19.7-45.7%, respectively]. One dizygotic twin pregnancy occurred after transfer of two embryos, the other pregnancies were singletons. The cumulative ongoing pregnancy rate after three cycles was 34% (95% CI 20.6-47.4%). Live birth rate was 32% per patient (95% CI 18.8-45.2%). CONCLUSIONS: Pregnancy rates after IVF with minimal, late follicular phase stimulation are encouraging. Considering the low-risk and patient-friendly nature of this protocol, it may be a feasible alternative to IVF with ovarian hyperstimulation. SN - 0268-1161 UR - https://www.unboundmedicine.com/medline/citation/15608031/Minimal_stimulation_IVF_with_late_follicular_phase_administration_of_the_GnRH_antagonist_cetrorelix_and_concomitant_substitution_with_recombinant_FSH:_a_pilot_study_ L2 - https://academic.oup.com/humrep/article-lookup/doi/10.1093/humrep/deh685 DB - PRIME DP - Unbound Medicine ER -