91,674 results match your criteria: "University of Southern California; gnedeva@usc.edu.[Affiliation]"

Objectives: Recent literature has provided additional data to further individualize treatment recommendations on regional nodal irradiation (RNI) patient selection and delivery techniques, but controversies surrounding optimal RNI utilization remain, including radiation technique, modality selection, and internal mammary lymph node (IMN) inclusion. The American Radium Society (ARS) Breast Appropriate Use Criteria (AUC) Committee performed a systematic review and developed a consensus guideline to summarize recent data and provide evidence-based recommendations.

Methods: A multidisciplinary panel comprised of 15 members representing radiation oncologists, medical oncologists, and surgical oncologists specializing in the treatment of breast cancer conducted an analysis of the medical literature from January 1, 2011 to April 1, 2024.

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Purpose: National Comprehensive Cancer Network Guidelines recommend initiating postoperative radiation therapy (PORT) within 6 weeks of surgery for patients with head and neck squamous cell carcinoma (HNSCC), but delays affect 50% of patients, disproportionately burden minoritized groups, and contribute to worse oncologic outcomes. This trial evaluates the efficacy of Navigation for Disparities and Untimely Radiation thErapy (NDURE), an enhanced navigation-based intervention, relative to usual care (UC) patient navigation for starting timely PORT.

Methods: Adults with locally advanced HNSCC planning to undergo surgery and PORT were randomly assigned 1:1 to standard multidisciplinary head and neck oncology care and either NDURE, a multilevel navigation-based intervention to enhance key processes of care and overcome barriers to timely PORT, or UC, which consisted of standard patient navigation.

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In 2020, the Centers for Medicare and Medicaid Services reintroduced Alzheimer's disease and related dementias to its risk-adjustment payment model for Medicare Advantage (MA) plans. Using 2017-20 data for 100 percent of community-dwelling beneficiaries enrolled in Medicare, we evaluated how the reintroduction of dementia to the risk-adjustment model affected rates of new (incident) dementia diagnoses among beneficiaries enrolled in MA relative to those enrolled in traditional Medicare. In response to the payment change, annual incident dementia diagnosis rates in MA increased by 11.

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Individual differences in how the brain responds to novelty are present from infancy. A common method of studying novelty processing is through event-related potentials (ERPs). While ERPs possess millisecond precision, spatial resolution remains poor, especially in infancy.

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The COVID-19 pandemic posed challenges to the mental health and well-being (MHW) of adolescents. The present study aimed to explore how parent-adolescent conversations may have protected (or threatened) adolescent mental health during the first year of the pandemic. We examined how parents and adolescents discussed MHW together and the influence of parents' affective conversational climate on changes in adolescent anxiety/depression over time.

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Introduction: Prolonged activation of the body's stress response from chronic exposure to adverse stressors may have a significant impact on lifelong psychosocial functioning. Screening for the impact of prolonged adversity in childhood has become an integral component of pediatric care. While past research has separately explored the impact of caregiver chronic illness and caregiver toxic stress on children, the relationship between caregiver chronic illness disability burden, caregiver parental toxic stress, and their child's psychosocial functioning is not well understood.

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Article Synopsis
  • Understanding the evolution of genomic variation is essential for creating effective conservation strategies for threatened species, focusing on connectivity, demographic changes, and environmental adaptation.
  • The study analyzed genomic variation in Fraxinus latifolia, a riparian tree facing threats from the invasive emerald ash borer, by sequencing over 1000 individuals from 61 populations.
  • Results showed strong population structure and low genetic diversity, suggesting that this patchy distribution could hinder the species' long-term evolutionary potential, underscoring the importance of conserving genomic diversity for future restoration efforts.
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Importance: Racial/ethnic and socioeconomic disparities have been observed in the mode of pelvic organ prolapse surgery. Some of the disparities may be attributed to differences in access to care and advanced surgical technology across the United States, although this is difficult to study.

Objective: We aimed to investigate whether racial/ethnic or socioeconomic disparities in a mode of prolapse surgery exist in a managed care setting, where differences in access are minimized.

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The Multifaceted Roles of Neutrophil Death in COPD and Lung Cancer.

J Respir Biol Transl Med

March 2025

Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.

Article Synopsis
  • COPD significantly increases the risk of developing lung cancer due to factors like genomic instability and immune dysregulation.
  • Neutrophils play a crucial role in inflammation related to both diseases, and their short lifespan allows for various programmed forms of cell death that can influence disease outcomes.
  • The review discusses mechanisms of neutrophil death, their impact on disease progression, and new therapeutic strategies focused on targeting these pathways in order to improve treatment for COPD and lung cancer.
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Addressing the unmet need in NSCLC progression with advances in second-line therapeutics.

Explor Target Antitumor Ther

November 2024

Department of Medicine, Division of Medical Oncology, University of Southern California Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, Los Angeles, CA 90033, USA.

Lung cancer is the leading cause of cancer mortality globally, with non-small cell lung cancer (NSCLC) accounting for 85% of cases. Despite advancements in first-line treatments such as immunotherapy and targeted therapies, resistance to these treatments is common, creating a significant unmet need for effective second-line therapies. This review evaluates current and emerging second-line therapeutic options for advanced or metastatic NSCLC, focusing on their efficacy and potential to improve patient outcomes.

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The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo.

Astrophys J Lett

January 2025

Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA;

The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model. In self-interacting dark matter (SIDM), however, a halo could evolve into a phase of gravothermal collapse, resulting in a higher central density than its CDM counterpart.

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This study examines whether adolescent nicotine and cannabis vaping types (i.e., nicotine-only, cannabis-only, and dual use) differ across sociodemographic and school characteristics (e.

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Introduction: Osimertinib is now a standard first-line (1L) therapy for EGFR-mutated (EGFRm) advanced NSCLC. We aimed to characterize patterns of therapy and longitudinal risk of brain and liver metastasis in a cohort of EGFRm NSCLC.

Methods: Patients with metastatic EGFRm NSCLC who received 1L systemic therapy at sites within the Academic Thoracic Medical Investigator's Consortium were included; demographic and clinical data including treatment patterns were described.

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Accurately predicting individual antidepressant treatment response could expedite the lengthy trial-and-error process of finding an effective treatment for major depressive disorder (MDD). We tested and compared machine learning-based methods that predict individual-level pharmacotherapeutic treatment response using cortical morphometry from multisite longitudinal cohorts. We conducted an international analysis of pooled data from six sites of the ENIGMA-MDD consortium (n = 262 MDD patients; age = 36.

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Objectives: Few digital health interventions for dementia caregivers, especially for racial and ethnic minorities, include long-term follow-ups. This study assessed the feasibility of two-year follow-up of the Wellness Enhancement for Caregivers (WECARE) intervention for Chinese American dementia caregivers, examined the changes in psychosocial health and explored future strategies.

Method: A mixed-method study was conducted two years after the initial WECARE intervention trial.

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Background: The goal of the PROPEL-IT study is to conduct an effectiveness-implementation (hybrid type 1) study to 1) test the effectiveness of a digital technology focused 24-month, patient-centered precision public health approach to weight-loss, facilitated by an electronic medical record (EMR) in Black patients with obesity and type 2 diabetes mellitus or prediabetes, and 2) better understand the external validity and context for implementation.

Methods: Patients in the Intensive Lifestyle Intervention (ILI) participate in a high-intensity behavioral intervention to facilitate weight loss through reducing dietary intake and increasing physical activity. The ILI is delivered by health coaches in the digital medicine program of a large health care organization facilitated by the patient portal of their EMR.

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Brainstem cavernous malformations are relatively rare lesions with a higher tendency of hemorrhage than supratentorial cavernous malformations. Due to the compact arrangement of fiber tracts and nuclei of the region, any hemorrhagic event can cause severe neurological deficits. This eloquent architecture of the area also makes any surgical attempt challenging.

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Background: Belzutifan, a first-in-class HIF-2α inhibitor, has shown antitumour activity as monotherapy and in combination with cabozantinib in patients with previously treated advanced kidney cancer. The phase 2 LITESPARK-003 study was designed to determine the antitumour activity and safety of belzutifan in combination with cabozantinib in patients with advanced clear-cell renal cell carcinoma that was previously untreated (cohort 1) or previously treated with immunotherapy (cohort 2). Here, we report results from cohort 1 of this clinical trial.

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Survey response times (RTs) have hitherto untapped potential to allow researchers to gain more detailed insights into the cognitive performance of participants in online panel studies. We examined if RTs recorded from a brief online survey could serve as a digital biomarker for processing speed. Data from 9,893 adults enrolled in the nationally representative Understanding America Study were used in the analyses.

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Background: Immune checkpoint inhibitors (ICIs) are recommended to treat patients with deficient mismatch repair/microsatellite instability high (dMMR/MSI-H) metastatic colorectal cancer (mCRC). Pivotal trials have fixed a maximum ICI duration of 2 years, without a compelling rationale. A shorter treatment duration has the potential to improve patients' quality of life and reduce both toxicity and cost without compromising efficacy.

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Intraoperative FiO and risk of impaired postoperative oxygenation in lung resection: A propensity score-weighted analysis.

J Clin Anesth

February 2025

Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA. Electronic address:

Study Objective: To assess whether, in a lung resection cohort with a low probability of confounding by indication, higher FiO is associated with an increased risk of impaired postoperative oxygenation - a clinical manifestation of lung injury/dysfunction.

Design: Pre-specified registry-based retrospective cohort study.

Setting: Two large academic hospitals in the United States.

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Deposition history of polycyclic aromatic hydrocarbons in tibetan lakes indicate the effectiveness of protected area establishment.

J Environ Manage

January 2025

School of the Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, China.

The effectiveness of protected areas in mitigating human impacts remains uncertain due to limited in-situ data; however, atmospheric micropollutant deposition in alpine lakes may provide a quantitative approach to evaluate anthropogenic pressures and threats. In this study, the temporal changes of polycyclic aromatic hydrocarbons (PAHs) inside/outside the Siling Co protected area, Tibet were reconstructed. The varying anthropogenic impact history suggested that, unlike the dominance of residential activities (i.

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Fluorescent lifetimes of dissolved organic matter (DOM) and associated physicochemical parameters were measured over 14 months in an estuary in Southern California, USA. Measurements were made on 77 samples from sites near the inlet, mid-estuary, and outlet to maximize the range of physicochemical variables. Time-resolved fluorescence data were well fit to a triexponential model with an intermediate lifetime component (τ: 1 to 5 ns), a long lifetime component (τ: 2 to 15 ns), and a short lifetime component (τ: < 1 ns).

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Refining breast cancer genetic risk and biology through multi-ancestry fine-mapping analyses of 192 risk regions.

Nat Genet

January 2025

Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.

Genome-wide association studies have identified approximately 200 genetic risk loci for breast cancer, but the causal variants and target genes are mostly unknown. We sought to fine-map all known breast cancer risk loci using genome-wide association study data from 172,737 female breast cancer cases and 242,009 controls of African, Asian and European ancestry. We identified 332 independent association signals for breast cancer risk, including 131 signals not reported previously, and for 50 of them, we narrowed the credible causal variants down to a single variant.

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