An Observational Study of CetrotideÂ® Gonadotropin-releasing Hormone Antagonist (GnRH Antagonist) With GONAL-fÂ® in Assisted Reproductive Technologies (ART)
This is a multicentric, prospective, observational study on the use of Cetrotide to control the endogenous gonadotrophin levels in Gonal-f stimulated ART treatment cycles in the Asia-Pacific region. The study plans to enrol approximately 1800-2000 subjects over a 9-month period at each participating centre.
This observational study is initiated to collect information on the use of Cetrotide (GnRH antagonist) in ART cycles in routine practice across the Asia-Pacific region. The information will allow a better understanding of the current ovarian stimulation regimens that involve Cetrotide in the control of the endogenous gonadotrophin concentrations. The collection of live birth data, though a challenging task, as a secondary endpoint will allow the study to show valuable information on the final objective of ART. To minimize the potential variability due to the different ovarian stimulation agents, the study is to include cycles treated with Gonal-f (recombinant human FSH) since this agent is widely available in the region.
Gonadotrophin-releasing hormone (GnRH) antagonists were introduced in the beginning of this decade for the use in ART. The potential advantages of GnRH antagonists over the GnRH agonists include the avoidance of an acute stimulation of endogenous gonadotrophins and a dramatic reduction in the length of analogue treatment.
Despite the plus points of GnRH antagonists in ART, there has been some concern over the lower pregnancy rate reported, which may be the cause of a lower acceptance of GnRH antagonists in ovarian stimulation for in vitro fertilization (IVF). Interestingly, a separate meta-analysis did not reach the same finding. The probability of live birth after ovarian stimulation for IVF was found not to be dependent on the type of analogue used for pituitary suppression Cetrotide, a GnRH antagonist from Merck Serono, is currently approved for the inhibition of premature luteinizing hormone (LH) surges in women undergoing controlled ovarian stimulation in majority of the regions. It is given either as a single-dose regimen of 3 mg injection or as a multiple-dose regimen of 0.25 mg daily injection. Both regimens have been shown to offer equivalent efficacy and safety outcomes.
- To assess the effectiveness of Cetrotide regimens, when used with Gonal-f, in routine ART treatment cycles
- To assess the effectiveness of Cetrotide regimens on other efficacy endpoints
- To survey the types of Cetrotide regimen used and their success rates
- To assess the safety of Cetrotide regimens
- To explore the association between subject characteristics and treatment outcomes
Observational Model: Case-Only, Time Perspective: Prospective
Cetrorelix acetate and Follitropin alfa
Singapore General Hospital Pte Ltd, Outram Road
Active, not recruiting
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT01109654
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
A recombinant alfa interferon consisting of 165 amino acids with arginine at positions 23 and 34. It is used extensively as an antiviral and antineoplastic agent.
A recombinant alfa interferon consisting of 165 amino acids with lysine at position 23 and histidine at position 34. It is used extensively as an antiviral and antineoplastic agent.
A recombinant alfa interferon consisting of 165 amino acid residues with arginine in position 23 and histidine in position 34. It is used extensively as an antiviral and antineoplastic agent.
This recombinant erythropoietin, a 165-amino acid glycoprotein (about 62% protein and 38% carbohydrate), regulates red blood cell production. Epoetin alfa is produced by Chinese hamster ovary cells into which the human erythropoietin gene has been inserted. (USP Dictionary of USAN and International Drug Names, 1996).
Inability to reproduce after a specified period of unprotected intercourse. Reproductive sterility is permanent infertility.
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