Evaluation of the Elecsys anti-Müllerian hormone assay for the prediction of hyper-response to controlled ovarian stimulation with a gonadotrophin-releasing hormone antagonist protocol.

Objective: This non-interventional study aimed to validate a pre-specified anti-Müllerian hormone (AMH) cut-off of 15 pmol/L (2.10 ng/mL) for the prediction of hyper-response to controlled ovarian stimulation (COS) using the fully automated Elecsys AMH immunoassay.

Study Design: One hundred and forty-nine women aged <44 years with regular menstrual cycles underwent COS with 150 IU/day follicle-stimulating hormone in a gonadotrophin-releasing hormone (GnRH) antagonist protocol.

Prospective study into the value of the automated Elecsys antimüllerian hormone assay for the assessment of the ovarian growing follicle pool.

Objective: To evaluate a new fully automated assay measuring antimüllerian hormone (AMH; Roche Elecsys) against antral follicle count in women of reproductive age.

Design: Prospective cohort study.

Setting: Hospital infertility clinics and academic centers.

New gestational phase-specific cutoff values for the use of the soluble fms-like tyrosine kinase-1/placental growth factor ratio as a diagnostic test for preeclampsia.

To establish gestational phase adapted cutoffs for the use of the soluble fms-like tyrosine kinase-1 (sFlt-1)/placental growth factor (PlGF) ratio as a diagnostic tool for preeclampsia in the clinical setting, a multicenter case-control study including a total of 1149 patients was performed. We report normal values of sFlt-1, PlGF, and the sFlt-1/PlGF ratio based on the analysis of a total of 877 patients with uneventful pregnancy outcome. A total of 234 patients with preeclampsia and a matched cohort consisting of 468 patients with normal pregnancy outcome were compared, and sFlt-1 and PlGF were measured on an automated platform.

The importance of repeated measurements of the sFlt-1/PlGF ratio for the prediction of preeclampsia and intrauterine growth restriction.

Aims: The sFlt-1/PlGF ratio has been evaluated as a diagnostic marker for preeclampsia (PE). The aim of this study was to explore the use of the sFlt-1/PlGF ratio as an aid in prediction for PE.

Methods: 150 patients with a high risk for PE were enrolled in this prospective study.

Family history of cancer in benign brain tumor subtypes versus gliomas.

Purpose: Family history is associated with gliomas, but this association has not been established for benign brain tumors. Using information from newly diagnosed primary brain tumor patients, we describe patterns of family cancer histories in patients with benign brain tumors and compare those to patients with gliomas.

Methods: Newly diagnosed primary brain tumor patients were identified as part of the Ohio Brain Tumor Study.

The sFlt-1/PlGF ratio in different types of hypertensive pregnancy disorders and its prognostic potential in preeclamptic patients.

Objective: The soluble fms-like tyrosine kinase (sFlt-1)/placental growth factor (PlGF) ratio is a reliable tool in the assessment of preeclampsia. We tested the hypothesis that the sFlt-1/PlGF ratio is able to identify women at risk for imminent delivery. We characterized the sFlt-1/PlGF ratio in different types of hypertensive pregnancy disorders.

An automated method for the determination of the sFlt-1/PIGF ratio in the assessment of preeclampsia.

Objective: The angiogenic and antiangiogenic factors soluble fms-like tyrosine kinase (sFlt)-1 and placental growth factor (PIGF) have been implicated in the mechanisms of disease responsible for preeclampsia (PE). Moreover, it has been proposed that the concentrations of these markers in maternal serum/plasma may have predictive value. This study evaluates a newly developed Elecsys (Roche, Penzberg, Germany) assay for sFlt-1 and PIGF and tests the value of the sFlt-1/PIGF ratio in the assessment of PE.

Immunoassay for sex hormone-binding globulin in undiluted serum is influenced by high-molecular-mass aggregates.

Background: The new Elecsys chemiluminescence assay for measurement of homodimeric sex hormone-binding globulin (SHBG) was designed for use with undiluted serum, in contrast to other methods that require predilution. During assay development, unexpected calibration difficulties were observed that were attributable to particular biochemical properties of the highly concentrated SHBG in solution.

Methods: We used a surface plasmon resonance (SPR) biosensor, which enables biomolecular interaction analysis of SHBG, and size-exclusion chromatography for this investigation.