We want to find out if kisspeptin is successful in stimulating oocyte maturation when it is used as a 'trigger' injection during IVF therapy for infertility.
Participants in the study will have a standard Gonadotrophin Releasing Hormone (GnRH) antagonist IVF cycle, but instead of having a trigger injection of hCG (human chorionic gonadotrophin) they will be randomised to receive one of 4 doses of kisspeptin injection. Oocytes will be retrieved and graded by an embryologist to see whether or not they have matured. The reproductive hormones Luteinising hormone, follicle stimulating hormone, oestradiol and progesterone will also be measured
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
175
single kisspeptin dose 1.6 nmol/kg subcutaneously
single kisspeptin dose 3.2 nmol/kg subcutaneously
single kisspeptin dose 6.4 nmol/kg subcutaneously
Hammersmith Hospital
London, United Kingdom
Percentage of Oocyte Maturation
This was assessed by oocyte yield (percentage of mature \[metaphase 2; M2\] oocytes collected from the number of follicles ≥ 14 mm on final ultrasound scan prior to kisspeptin-54 trigger administration
Time frame: 36 hours post Kisspeptin-54 trigger injection
Biochemical Pregnancy
Number of participants achieving biochemical pregnancy by serum βhCG \> 10 mIU/mL
Time frame: 11 days after embryo transfer
Occurrence of OHSS
Women were routinely screened for the development of early OHSS and late OHSS. Women were screened by symptoms, blood analysis, and ultrasound parameters
Time frame: 11 days following embryo transfer
Fertilization Rate
Percentage of M2 oocytes that fertilize to form two pronuclear \[2PN\] zygotes following intracytoplasmic injection with sperm \[ICSI\]
Time frame: 3 days after oocyte retrieval
Embryo Formation
All embryos were graded at day 3 by an independent embryologist, blinded to doses of kisspeptin administered, using the British Fertility Society and Association of Clinical Embryologist embryo grading scheme for cleavage stage embryos, which describes embryos based on cell number, blastomere size, and fragmentation
Time frame: 3 days after oocyte retrieval
Number of Participants With Clinical Pregnancy
Intrauterine gestational sac with heartbeat on ultrasound at 6 weeks' gestation
Time frame: 6 weeks after embryo transfer
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single kisspeptin dose 9.6 nmol/kg subcutaneously
single kisspeptin dose 12.8 nmol/kg subcutaneously
kisspeptin dose 9.6 nmol/kg given twice 10hrs apart subcutaneously
kisspeptin dose 9.6 nmol/kg subcutaneously and saline subcutaneously, 10hrs apart