Active clinical trials for "Infertility"

Aim to investigate the efficacy of follitropin alpha biosimilar therapy (Primapur®) in nonselected real-world population.

Serum progesterone levels prepare the endometrium for implantation and play an important role during embryo transfer (ET). In clinical practice, luteal phase support progesterone supplementation is systematically offered to all women undergoing medically assisted procreation (AMP), independently of ET conditions (fresh and frozen). The investigators propose to perform a prospective cross-sectional single-center cohort study to measure progesterone levels on the day of the ET on all AMP cycles and to compare these levels between active pregnancies and ET unsuccessful cycles. They will determine progesterone threshold levels corresponding to successful attempts in all ET strategies (fresh and frozen) as well as clinical and biological risk factors leading to luteal phase deficiency during ET. They could therefore individualize progesterone supplementation according to patient's needs.

The purpose of this study is to determine if the use of slush nitrogen results in higher post-thaw survival rates for oocytes compared to conventionally used liquid nitrogen.

Frozen embryo transfer (FET) cycles have become more common in recent years due to a push towards elective single embryo transfer (SET). While it is known that progesterone supplementation during the luteal phase improves clinical pregnancy rates, there is a paucity of prospective data on the impact of serum progesterone levels on pregnancy outcomes in FET cycles. This multicentre prospective cohort study aims to investigate the association between serum progesterone levels on the day of FET and pregnancy outcomes, and to determine a serum progesterone cut-off value above which clinical pregnancy and live birth are more likely to occur. Women undergoing ART-FET cycles at CARE Fertility clinics in the UK will be recruited and their serum progesterone measured on the day of frozen embryo transfer. Follow-up data will be stored in electronic patient records and analysed to determine whether a low serum progesterone level on the day of FET adversely affects ART outcomes.

Human gonadotrophins have been successfully used for the treatment of infertility for more than 30 years. This observational study is being conducted to evaluate the efficacy and safety of the gonadotropins used for controlled ovarian stimulation (COS) in assisted reproductive technologies (ART).

The aim of the study is to assess the effectiveness of 5 mixed protocols of ovarian hyperstimulation with urinary gonadotrophins to achieve clinical pregnancy in females undergoing assisted reproductive techniques (IVF/ICSI) (in-vitro fertilisation/intracytoplasmic sperm injection). Study hypothesis: mixed protocols with urinary FSH (follicle-stimulating hormone) and urinary hMG (human menopausal gonadotropin)should be more effective than monotherapy.

To assess the effectiveness of protocols of ovarian hyperstimulation combining urinary gonadotrophins + GnRH antagonist vs urinary gonadotrophins, to achieve clinical pregnancy in females undergoing intrauterine insemination. Study hypothesis: protocols combining urinary gonadotrophins + GnRH antagonist should be more effective than monotherapy.

This is a prospective, open-label, non-comparative, multicentric Phase 4 study to evaluate the ease of use, local tolerance, safety and effectiveness of Gonal-f® (filled-by-mass in a prefilled pen) in subjects undergoing ovarian hyperstimulation for in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) with recombinant follicle stimulating hormone (r-FSH). Clarification for change of study type: The study was erroneously registered as an interventional trial on ClinicalTrials.gov between 2010 and 2012. It was shown recently that the study protocol and conduct of the study did not include any clinical interventions beyond those which are Standard Clinical Practice and the approved label for Gonal-f®. Furthermore, all other relevant study essential documentations (e.g. Informed Consent, CRF, etc.) are in line with an observational study design. As per EU regulations (Article 2(c) of Directive 2001/20/EC), this study is a 'non-interventional trial'.

BACKGROUND: A new effective way, transvaginal ultrasound-guided ovarian interstitial laser-coagulation treatment, in management of anovulation in patients with polycystic ovary syndrome (PCOS), has been presented in the data published. But, the optimal number of laser coagulation points in the ovarian interstitial to be applied at the procedure is unclear. This clinic trial aims to explore an optimal laser dose for this new protocol. METHODS: Fifty-six PCOS women with clomifene citrate-resistant underwent ultrasound-guided transvaginal ovarian interstitial YAG-laser treatment. By random list table，all subjects were randomly divided into four groups in terms of the number of laser coagulation points made in their ovaries as follows: group A, one coagulation point per ovary; group B, two points; group C, three points; group D, four to five points. The size of each point was about 10 mm in diameter on the ovarian plane monitored by transvaginal ultrasound. Postoperative ovulation rate, pregnancy rate and some biochemical parameters were compared among four groups.

The primary objective of this observational study is to assess the cumulative rate of ongoing pregnancy at 10 ±2 weeks after hCG administration in a new series of IVF-treatment cycles in a total of 176 subjects, who have undergone three or more previous IVF-treatment cycles without live birth. Secondary objectives include subgroup analysis on the effect of age on the likelihood of pregnancy at 10 ±2 weeks after hCG administration in a new series of IVF-treatment cycles in patients < 35 years and ≥ 35 years, who have undergone three or more previous IVF-treatment cycles without live birth. The information obtained from this trial will be helpful for subjects who are considering further IVF treatments and for IVF centres, as well as for the formulation of governmental policies regarding healthcare reimbursement in Norway.