in Vitro Fertilization Clinical Trial
Official title:
Correlation of Urinary Estrone Glucuronide With Superovulatory Response in IVF Cycles.
To determine if measurement of urinary estrone glucuronide concentrations with an at-home device is correlated with superovulatory response during gonadotropin stimulated IVF cycles.
Hypothesis Urinary estradiol concentrations measured with an at-home device correlates with gonadotropin response during superovulation for IVF and can serve as an alternative to serum estradiol measurements. Justification The in vitro fertilization (IVF) process entails gonadotropin stimulation to obtain supernumerary oocytes. To ensure an adequate and safe administration, gonadotropin treatment requires monitoring with transvaginal sonography (TVS) to determine the quantity and size of ovarian follicles. In addition, serum estradiol (E2) concentration reflects bioactivity of the follicles and is used to modulate dosing. TVS and E2 are complementary modalities used synchronously to dynamically optimize the gonadotropin protocol. For the typical IVF stimulation cycle with an GnRH antagonist protocol, the patient will require 10-12 days of gonadotropin administration, during which time the 3-6 visits for TVS and blood tests will be needed. Reducing the invasiveness of procedures can improve the patient experience. Repetitive phlebotomy, as is required for serum estradiol measurements during IVF, can be unpleasant and painful. Thus, a less invasive alternative with at-home urinary testing may be more desirable and convenient. Estrone glucuronide (E3G) is a metabolite of E2 that can be measured in the urine. Urinary E3G with an FDA and CE registered home device called the Mira Fertility Tracker ("Mira"). Correlation between the serum hormones and their respective urinary metabolites has been established but the efficacy of monitoring urinary E3G has not been demonstrated in the context of IVF. The purpose of the current observational study is to compare urinary E3G with traditional serum E2 monitoring during gonadotropin stimulation for IVF and correlate the levels with stimulation outcomes. If validated, urinary hormone monitoring could serve as a more patient-friendly alternative to repetitive phlebotomy required for serum hormone measurement during IVF. Research Design Patients will undergo IVF per clinical indication. Gonadotropin dosing will be determined at the discretion of the responsible physician using standard dosing criteria (age, ovarian reserve testing, prior history, etc). For consistency of comparison, the study population will focus on patients with a normal ovarian reserve (AMH 1-3.5ng/mL). During stimulation, the monitoring schedule will be consistent with routine clinical protocols. In general, the initial E2 are determined on day 6 of stimulation from a single serum sample, and subsequent serum E2 and TVS are checked from day 8 onwards, as is clinically indicated by patient response to gonadotropin stimulation. Urinary E3G will be monitored daily with first morning urine from the first day through the final day of gonadotropin stimulation. A Mira device and testing wands will be provided to each participating patient and urinary testing will be performed by the patient at home. Primary outcomes will include correlation of E3G with the number of total and mature oocytes retrieved, and a comparison to the serum E2 correlation to the same parameters. Secondary outcomes will include correlation of urinary E3G and serum E2 levels throughout stimulation. Additional details regarding laboratory study protocols are as follows: Measurement of urine E3G: The Mira be used to measure urinary E3G via immunofluorescence method. First morning urine will be collected by the patient at home. A test wand will be dipped into the urine sample for ten seconds, then inserted into a palm-sized device. All other protocols are consistent with routine clinical practice. Briefly, serum samples for E2 will be collected by venipuncture and processed using a commercially available E2 chemiluminescent assay on automated immunoanalyzer (Beckman-Coulter Access 2) in an accredited commercial laboratory (Novavita, Vancouver, BC). Sonography will be performed by licensed physicians with an endovaginal probe, consistent with standard clinical practice. IVF laboratory procedures will be performed by trained embryologists at the Olive Fertility Centre (Vancouver, BC). ;
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