Aim to investigate the efficacy of follitropin alpha biosimilar therapy (Primapur®) in nonselected real-world population.
A retrospective observational anonymized cohort study of follitropin alpha biosimilar (Primapur®) as a pre-filled pen injector with a dose adjustment of 5 IU, aimed to investigate its efficacy and safety in a nonselected population with indications to assisted reproductive technologies (ART) was carried out. The ovarian stimulation (OS) protocols included: monotherapy protocols with using only Primapur®; mixed protocols (recombinant and urinary-derived gonadotropins); short protocols with using antagonists of gonadotropin-releasing hormone (GnRH) and long protocols with GnRH agonists. The stimulation protocols were analyzed with Primapur® application for at least 5 days.
Study Type
OBSERVATIONAL
Enrollment
5,484
Subcutaneous injection of follitropin alpha biosimilar only, with daily dose 100-300 IU for 10 days, maximum of 15 days, using antagonists of GnRH or agonist of GnRH.
Subcutaneous injection of follitropin alpha biosimilar, with daily dose 100-300 IU for at least 5 days, than added another gonadotropin for a maximum of 10 days, using antagonists of GnRH or agonist of GnRH.
Subcutaneous injection of follitropin alpha biosimilar only, with daily dose 100-300 IU for 10 days, maximum of 15 days, using antagonists of GnRH only for suppression.
Number of Oocytes Retrieved
The total number of retrieved oocytes at the day of ovum pick-up. No more than 37 hours from the introduction of the ovulation inducer (HCG or GnRH-agonist). Due to lack of efficacy of the therapy (ovarian stimulation was not completed and oocytes were not retrieved) the analysed population was: (1) Mixed protocols: recombinant and urinary-derived gonadotropins and antagonists/agonists of GnRH - 2625 participants (lack of efficacy: 78 participants, the analysed population was 2547 participants); (2) Monoprotocols: follitropin alpha biosimilar only and antagonists/agonists of GnRH - 2859 participants (lack of efficacy: 89, the analysed population was 2770); (3) Monoprotocols: follitropin alpha biosimilar only and antagonists of GnRH - 2183 participants (lack of efficacy: 59, the analysed population was 2124) and (4) Monoprotocols: follitropin alpha biosimilar only and agonist of GnRH - 676 participants (lack of efficacy: 30, the analysed population was 646).
Time frame: From date of start of ovarian stimulation with follitropin alpha up to 15 days
Percentage of Participants With Ongoing Clinical Pregnancy Per Embryo Transfer
Ongoing clinical pregnancy per embryo transfer (detection of gestational sac and heartbeat from 6 weeks after transfer), n (ongoing pregnancy rate per transfer with known outcome, %). Due to delayed embryo transfers, the analysed population for "Ongoing clinical pregnancy per embryo transfer" was: (1) Mixed protocols: recombinant and urinary-derived gonadotropins and antagonists/agonists of GnRH - 2007 embryo transfers (1542 with known outcome); (2) Monoprotocols: follitropin alpha biosimilar only and antagonists/agonists of GnRH - 2213 embryo transfers (1800 with known outcome); (3) Monoprotocols: follitropin alpha biosimilar only and antagonists of GnRH - 1809 embryo transfers (1466 with known outcome) and (4) Monoprotocols: follitropin alpha biosimilar only and agonist of GnRH - 404 embryo transfers (334 with known outcome).
Time frame: At least 6 weeks after embryo transfer
Number of Mature Oocytes
Mature oocytes (MII stage of development). Due to lack of efficacy of the therapy (ovarian stimulation was not completed and oocytes were not retrieved) the analysed population was: (1) Mixed protocols: recombinant and urinary-derived gonadotropins and antagonists/agonists of GnRH - 2625 participants (lack of efficacy: 78 participants, the analysed population was 2547 participants); (2) Monoprotocols: follitropin alpha biosimilar only and antagonists/agonists of GnRH - 2859 participants (lack of efficacy: 89, the analysed population was 2770); (3) Monoprotocols: follitropin alpha biosimilar only and antagonists of GnRH - 2183 participants (lack of efficacy: 59, the analysed population was 2124) and (4) Monoprotocols: follitropin alpha biosimilar only and agonist of GnRH - 676 participants (lack of efficacy: 30, the analysed population was 646).
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Subcutaneous injection of follitropin alpha biosimilar only, with daily dose 100-300 IU for 10 days, maximum of 15 days, using agonists of GnRH only for suppression.
Overall ovarian stimulation protocols with follitropin alpha biosimilar for at least 5 days+other recombinant and menotropins and short (antagonists of GnRH) or long protocol (agonist of GnRH).
Center for reproductive medicine, Barnaul
Barnaul, Russia
Center for reproductive medicine, Irkutsk
Irkutsk, Russia
Clinic "Mother and Child" Kazan
Kazan', Russia
Clinic "Mother and Child" Kostroma
Kostroma, Russia
Clinic "Mother and Child" Krasnodar
Krasnodar, Russia
Center for reproductive medicine, Krasnoyarsk
Krasnoyarsk, Russia
AltraVita IVF clinic
Moscow, Russia
Center of Reproductive Medicine and Genetics "Nova Clinic"
Moscow, Russia
Clinic "Mather and Child" Lefortovo
Moscow, Russia
Clinic "Mather and Child" Savelovskaya
Moscow, Russia
...and 25 more locations
Time frame: From date of start of ovarian stimulation with follitropin alpha up to 15 days
Number of Fertilized Oocytes
Fertilization rate (FR) is percentage of transformation of oocytes into two pronuclei (presence of two pronuclei: zygotes with 2PN). Due to lack of efficacy of the therapy (ovarian stimulation was not completed and oocytes were not retrieved) the analysed population was: (1) Mixed protocols: recombinant and urinary-derived gonadotropins and antagonists/agonists of GnRH - 2625 participants (lack of efficacy: 78 participants, the analysed population was 2547 participants); (2) Monoprotocols: follitropin alpha biosimilar only and antagonists/agonists of GnRH - 2859 participants (lack of efficacy: 89, the analysed population was 2770); (3) Monoprotocols: follitropin alpha biosimilar only and antagonists of GnRH - 2183 participants (lack of efficacy: 59, the analysed population was 2124) and (4) Monoprotocols: follitropin alpha biosimilar only and agonist of GnRH - 676 participants (lack of efficacy: 30, the analysed population was 646).
Time frame: From date of start of ovarian stimulation with follitropin alpha up to 16 days
Total Dose of Follitropin Alpha Biosimilar Protocol, IU
Mean dose of follitropin alpha biosimilar for ovarian stimulation. Due to lack of efficacy of the therapy (ovarian stimulation was not completed and oocytes were not retrieved) the analysed population was: (1) Mixed protocols: recombinant and urinary-derived gonadotropins and antagonists/agonists of GnRH - 2625 participants (lack of efficacy: 78 participants, the analysed population was 2547 participants); (2) Monoprotocols: follitropin alpha biosimilar only and antagonists/agonists of GnRH - 2859 participants (lack of efficacy: 89, the analysed population was 2770); (3) Monoprotocols: follitropin alpha biosimilar only and antagonists of GnRH - 2183 participants (lack of efficacy: 59, the analysed population was 2124) and (4) Monoprotocols: follitropin alpha biosimilar only and agonist of GnRH - 676 participants (lack of efficacy: 30, the analysed population was 646).
Time frame: From date of start of ovarian stimulation with follitropin alpha up to 16 days