Publications by authors named "Valerie Baker"

Objective: To assess the relationship between endometrial thickness and live birth rates in fresh embryo transfer and frozen embryo transfer with and without preimplantation genetic testing.

Design: Retrospective cohort study using the Society for Assisted Reproductive Technology Clinic Outcome Reporting System (SART CORS).

Subjects: Autologous IVF fresh and frozen embryo transfer cycles initiated in 2019-2020.

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As evidenced by the 2021 American Society for Reproductive Medicine Müllerian Anomaly Classification (ASRM MAC), there are numerous possible configurations of the female genitourinary system. Some anomalies place patients at higher risk of infertility, miscarriage, fetal malpresentation, and preterm labor. Correct characterization of Müllerian anomalies is critical for proper infertility treatment and pregnancy counseling.

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Article Synopsis
  • The study reviewed data from over 3,000 assisted reproductive technology clinics in 74 countries in 2015 and 79 countries in 2016 to assess the usage, effectiveness, and safety of these technologies.
  • In 2015, there were approximately 2.36 million cycles leading to around 548,652 infants, while in 2016, there were about 2.8 million cycles resulting in approximately 647,188 infants born.
  • Key findings included a small increase in the age of women undergoing treatment, an increase in frozen-thawed embryo transfers, and a slight uptick in the delivery rates from these cycles, alongside a decrease in twin and triplet delivery rates.
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Background: Fertility counseling is recommended for adolescent and young adult women facing gonadotoxic cancer therapy. However, fertility care is subspecialized medical care offered at a limited number of institutions, making geographic access a potential barrier to guideline-concordant care. We assessed the relationship between geographic access and receipt of fertility counseling among adolescent and young adult women with cancer.

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Purpose: In the first of two companion papers, we comprehensively reviewed the recent evidence in the primary literature, which addressed the increased prevalence of hypertensive disorders of pregnancy, late-onset or term preeclampsia, fetal overgrowth, postterm birth, and placenta accreta in women conceiving by in vitro fertilization. The preponderance of evidence implicated frozen embryo transfer cycles and, specifically, those employing programmed endometrial preparations, in the higher risk for these adverse maternal and neonatal pregnancy outcomes. Based upon this critical appraisal of the primary literature, we formulate potential etiologies and suggest strategies for prevention in the second article.

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Purpose: In this first of two companion papers, we critically review the evidence recently published in the primary literature, which addresses adverse maternal and neonatal pregnancy outcomes associated with programmed embryo transfer cycles. We next consider whether these pathological pregnancy outcomes might be attributable to traditional risk factors, unknown parental factors, embryo culture, culture duration, or cryopreservation. Finally, in the second companion article, we explore potential etiologies and suggest strategies for prevention.

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Capsule: In this study the presence of uterine fibroids was significantly associated with an increased risk of development of hypertensive disorders of pregnancy even when accounting for age and BMI in meta-regression. This finding has potential implications for risk stratification and monitoring for hypertension during pregnancy in this population.

Objective: To examine the association between uterine fibroids and the development of hypertensive disorders in pregnancy.

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Background: Selective biomarkers may improve outcomes in patients with recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) treated with immune checkpoint inhibitor therapy. We investigated three independent biomarkers for association with efficacy in the randomized, phase III KESTREL study (NCT02551159) of first-line durvalumab monotherapy or durvalumab plus tremelimumab versus the EXTREME regimen: programmed cell death ligand-1 (PD-L1) immunohistochemistry, blood tumor mutational burden (bTMB) via circulating tumor DNA, and neutrophil-to-lymphocyte ratio (NLR).

Methods: Tumor or blood samples from patients enrolled in the KESTREL study were analyzed for PD-L1, bTMB, and NLR.

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Purpose: Although significant improvements in assisted reproductive technology (ART) outcomes have been accomplished, a critical question remains: which embryo is most likely to result in a pregnancy? Embryo selection is currently based on morphological and genetic criteria; however, these criteria do not fully predict good-quality embryos and additional objective criteria are needed. The cumulus cells are critical for oocyte and embryo development. This systematic review assessed biomarkers in cumulus-oocyte complexes and their association with successful IVF outcomes.

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Article Synopsis
  • Infertility affects 15% of women of reproductive age in the U.S., with rising use of assisted reproductive technology (ART) and increasing awareness of its link to cardiovascular disease (CVD) risk.
  • Women undergoing ART often have pre-existing CVD risk factors like obesity and hypertension, face higher chances of adverse pregnancy outcomes, and increased cardiometabolic demands during pregnancy.
  • More research is needed to understand the long-term CVD risks associated with ART, emphasizing the importance of screening and management of CVD risk factors before and during pregnancy to improve health outcomes.
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Objective: To use causal inference to investigate whether the flare or antagonist protocol is better for poor responders going through controlled ovarian stimulation.

Design: A retrospective study.

Setting: Retrieval cycles from the Society for Assisted Reproductive Technology Clinic Outcomes Reporting System.

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Objective: To assess the presence of sociodemographic and clinical disparities in fertility-sparing treatment and assisted reproductive technology (ART) use among patients with a history of cervical, endometrial, or ovarian cancer.

Methods: We conducted a population-based cohort study of patients aged 18-45 years who were diagnosed with cervical cancer (stage IA, IB), endometrial cancer (grade 1, stage IA, IB), or ovarian cancer (stage IA, IC) between January 1, 2000, and December 31, 2015, using linked data from the CCR (California Cancer Registry), the California Office of Statewide Health Planning and Development, and the Society for Assisted Reproductive Technology. The primary outcome was receipt of fertility-sparing treatment , defined as surgical or medical treatment to preserve the uterus and at least one ovary.

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Objective: To investigate the association between the number of oocytes retrieved and the numbers of fertilized oocytes and blastocysts and cumulative and primary transfer live birth rates (LBRs).

Design: Retrospective study.

Setting: Retrieval cycles and linked embryo transfers from the Society for Assisted Reproductive Technology Clinic Outcome Reporting System.

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Purpose: Equitable access to oncofertility services is a key component of cancer survivorship care, but factors affecting access and use remain understudied.

Methods: To describe disparities in assisted reproductive technology (ART) use among women with breast cancer in California, we conducted a population-based cohort study using linked oncology, ART, and demographic data. We identified women age 18-45 years diagnosed with invasive breast cancer between 2000 and 2015.

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Article Synopsis
  • Fertility preservation (FP) is not commonly used by women diagnosed with cancer, partly due to concerns about delays in treatment and future reproductive success.
  • A study analyzed data from women aged 15 to 39 with cancer in North Carolina, comparing outcomes between those who used FP and those who didn't, focusing on assisted reproductive technology (ART) use.
  • Results showed that using FP delayed cancer treatment by up to 4.5 weeks but did not significantly impact prognosis, and women who initiated ART before treatment had better odds of live births, underscoring the need for more research on gestational carriers in cancer patients.
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Article Synopsis
  • * Data from over 45 million delivery cases from 2008 to 2019 show that women using ART were generally older, more likely to have health issues like hypertension and gestational diabetes, and had longer and more expensive hospital stays.
  • * While ART was linked to increased risks of conditions like pre-eclampsia, heart failure, and various types of strokes, it did not show a significant association with peripartum cardiomyopathy or acute coronary syndrome.
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Dissociation of embryo transfer from the ovarian stimulation cycle has afforded patients increased flexibility for genetic testing and fertility preservation. Although frozen embryo transfer (FET) has largely been demonstrated to be safe and effective compared with fresh transfer, programmed FET cycles, where a corpus luteum is absent, have come under increasing scrutiny. In observational trials, programmed FET protocols appear to be associated with an increased risk of ineffective decidualization and impaired placental function.

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Study Question: Is there an association between fertility status, method of conception and the risks of birth defects and childhood cancer?

Summary Answer: The risk of childhood cancer had two independent components: (i) method of conception and (ii) presence, type and number of birth defects.

What Is Known Already: The rarity of the co-occurrence of birth defects, cancer and ART makes studying their association challenging. Prior studies have indicated that infertility and ART are associated with an increased risk of birth defects or cancer but have been limited by small sample size and inadequate statistical power, failure to adjust for or include plurality, differences in definitions and/or methods of ascertainment, lack of information on ART treatment parameters or study periods spanning decades resulting in a substantial historical bias as ART techniques have improved.

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Objective: To determine if morphologically suboptimal embryo quality is associated with adverse perinatal outcomes.

Design: A retrospective cohort.

Setting: SART CORS database.

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Objective: To determine the reproducibility of the World Health Organization Fifth Edition (WHO5) strict grading methodology by comparing the percentage of morphologically normal sperm (PNS) recorded by the core laboratory with results obtained at the fertility centers participating in a multisite clinical trial.

Design: Secondary cohort analysis of data from the Males, Antioxidants, and Infertility trial.

Setting: Fertility centers.

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Background: This study sought to determine the impact of pregnancy or assisted reproductive technologies (ART) on breast-cancer-specific survival among breast cancer survivors.

Methods: The authors performed a cohort study using a novel data linkage from the California Cancer Registry, the California birth cohort, and the Society for Assisted Reproductive Technology Clinic Outcome Reporting System data sets. They performed risk-set matching in women with stages I-III breast cancer diagnosed between 2000 and 2012.

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Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women of reproductive age and is hallmarked by hyperandrogenism, oligo-ovulation, and polycystic ovarian morphology. Polycystic ovary syndrome, particularly the hyperandrogenism phenotype, is associated with several cardiometabolic abnormalities, including obesity, dyslipidemia, elevated blood pressure, and prediabetes or type 2 diabetes. Many, but not all, studies have suggested that PCOS is associated with increased risk of cardiovascular disease (CVD), including coronary heart disease and stroke, independent of body mass index and traditional risk factors.

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Purpose: Women face multiple barriers to fertility preservation after cancer diagnosis, but few studies have examined disparities in use of these services.

Methods: Women aged 15-39 years diagnosed with cancer during 2004-2015 were identified from the North Carolina Central Cancer Registry and linked to the Society for Assisted Reproductive Technology Clinic Outcomes Reporting System. Women who cryopreserved oocytes or embryos for fertility preservation (n = 96) were compared to women who received gonadotoxic treatment but did not use fertility preservation (n = 7964).

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Objective: To develop in vitro fertilization (IVF) prediction models to estimate the individualized chance of cumulative live birth at two time points: pretreatment (i.e., before starting the first complete cycle of IVF) and posttreatment (i.

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