Efficacy Study Comparing the Effect of Clomiphencitrate to an Antagonist Protocol
CANTAPOR
Prospective Randomized Phase IV Study Comparing the Effect of Adding Clomiphencitrate Versus Placebo to a High Dose Versus a Minimal Dose GnRH Antagonist Protocol on the Number of Oocytes Collected From Women That Are Poor Responders
1 other identifier
interventional
117
1 country
1
Brief Summary
The aim of this study is to assess the oocyte yield of infertile women with suspected or known poor ovarian reserve (POR) undergoing a GnRH antagonist protocol for IVF with Merional® starting either with a low (150 IU) or a high dose (450 IU) and adding 100mg of CC (Serophene®) in the early follicular phase of the stimulation (day 3 to 7). To date no RCT has been conducted to compare the reproductive outcome of patients with POR as defined by the ESHRE Bologna criteria after controlled ovarian hyperstimulation with HMG in an GnRH antagonist protocol using low doses versus high doses of HMG and adding CC versus placebo. We hypothesize that adding 100 mg of CC on day 3-7 to a HMG antagonist protocol will lead to an additional increment of endogenous GT thus increasing the oocytes yield after controlled ovarian stimulation due to higher endogenous gonadotropin secretion.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_4
Started Aug 2013
Longer than P75 for phase_4
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 5, 2012
CompletedFirst Posted
Study publicly available on registry
April 13, 2012
CompletedStudy Start
First participant enrolled
August 1, 2013
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 14, 2017
CompletedStudy Completion
Last participant's last visit for all outcomes
November 14, 2017
CompletedDecember 4, 2018
December 1, 2018
4.3 years
April 5, 2012
December 3, 2018
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
number of collected oocytes
1 year
Secondary Outcomes (1)
Implantation rate
1 year
Study Arms (4)
High Dose Clomiphencitrat
ACTIVE COMPARATOR450 IU Merional® plus 100mg Serophene®
Low Dose Clomiphencitrat
ACTIVE COMPARATOR150 IU Merional® plus 100mg Serophene®
High Dose Placebo
PLACEBO COMPARATOR450 IU Merional® plus Placebo
Low Dose Placebo
PLACEBO COMPARATOR150 IU Merional® plus Placebo
Interventions
100mg of clomiphencitrate(Serophene®) are added to a high dose of HMG (450 IU of Merional®) in the early follicular phase of the stimulation (day 3 to 7).
100mg of clomiphencitrate(Serophene®) are added to a low dose of HMG (150 IU of Merional®) in the early follicular phase of the stimulation (day 3 to 7).
Placebo is added to a high dose of HMG (450 IU of Merional®) in the early follicular phase of the stimulation (day 3 to 7).
Placebo is added to a low dose of HMG (150 IU of Merional®) in the early follicular phase of the stimulation (day 3 to 7).
Eligibility Criteria
You may qualify if:
- Age: \>18 years \< 43 years
- BMI: ≥ 18 ≤ 32 kg/m2
- Poor responder as defined by ESHRE working group
You may not qualify if:
- Age \< 18 und \> 43 years
- Pregnancy
- Breast feeding
- Uterine conditions interfering with endometrial proliferation and embryo implantation (submucous fibroids or polyps)
- Women diagnosed with PCOS according to the Rotterdam criteria
- Hyperprolactinaemia - untreated
- Both ovaries not accessible transvaginally for oocyte pick up
- Ovarian cysts of unclear dignity
- Evidence of hydrosalpinx on ultrasound
- Clinically significant severe systemic disease that are incompatible with pregnancy
- Known or suspected hypersensitivity to the active substances (gonadotrophins, ganirelix, progesterone, clomiphencitrate)
- Untreated thyroid or adrenal disorders
- Bleeding disorders
- Cancer
- Severe renal or hepatic dysfunction
- +2 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University Hospital Basel
Basel, 4031, Switzerland
Related Publications (1)
Moffat R, Hansali C, Schoetzau A, Ahler A, Gobrecht U, Beutler S, Raggi A, Sartorius G, De Geyter C. Randomised controlled trial on the effect of clomiphene citrate and gonadotropin dose on ovarian response markers and IVF outcomes in poor responders. Hum Reprod. 2021 Mar 18;36(4):987-997. doi: 10.1093/humrep/deaa336.
PMID: 33367742DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Rebecca E Moffat, MD
University Hospital Basel, Women's Clinic
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 5, 2012
First Posted
April 13, 2012
Study Start
August 1, 2013
Primary Completion
November 14, 2017
Study Completion
November 14, 2017
Last Updated
December 4, 2018
Record last verified: 2018-12