Publications by authors named "Maria E Martinez"

Purpose: A significant proportion of many populations remain uninsured. The aim of the study was to assess differences in breast cancer outcomes before and after the implementation of an innovative approach to the multidisciplinary treatment of uninsured breast cancer patients.

Methods: Retrospective review was performed of patients seen at a safety net hospital from January 2000 to December 2020.

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Importance: Rates of early-onset (before 50 years of age) colorectal cancer (EOCRC) are increasing, with notable differences across racial and ethnic groups. Limited data are available on EOCRC-related mortality differences when disaggregating racial and ethnic groups.

Objective: To investigate racial and ethnic differences in EOCRC mortality, including disaggregation of Asian American populations separately, including Native Hawaiian or Other Pacific Islander populations and specific Asian American groups, and to quantify the contribution of clinical and sociodemographic factors accounting for these differences.

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  • Clinical genetic testing helps find cancer risks by identifying gene changes, but some of these changes are confusing because we don't know what they mean (called VUS).
  • Researchers studied a huge number of breast cancer patients and healthy people to understand these confusing gene changes better.
  • They found that their method of analyzing data closely matches what other experts say about which gene changes are harmless or harmful, giving more information about 785 unclear changes.
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  • - The study aimed to enhance breast cancer risk modeling by integrating pathogenic variants (PVs) in specific genes, a polygenic risk score (PRS), and an epidemiologic risk score (ERS) using data from over 23,000 breast cancer cases and controls.
  • - The results showed that postmenopausal women with no PVs but high ERS had a 4.4-fold increase in breast cancer risk, while some CHEK2 PV carriers had a predicted lifetime risk below 20%, indicating potential over-screening in certain groups.
  • - The findings suggest that combining these risk factors can improve risk assessment and possibly lead to more tailored screening and prevention strategies for breast cancer.
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Background: The benefits of cannabis in symptom management among cancer survivors are widely acknowledged; however, patterns of cannabis use by cancer stage at diagnosis are unknown.

Methods: Here, we examined the association between cancer stage at diagnosis and consideration of cannabis use since diagnosis. We analyzed cross-sectional survey data from 954 cancer survivors, weighted to be representative of a National Cancer Institute-Designated Comprehensive Cancer Center's patient population.

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Background & Aims: Prevalence and severity of metabolic dysfunction-associated steatotic liver disease (MASLD) is reported to be higher in Hispanic adults in the United States (U.S.), although rates vary substantially across studies and have increased given the evolving obesity epidemic.

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Introduction: Non-Hispanic Black (NHB) Americans have a higher incidence of colorectal cancer (CRC) and worse survival than non-Hispanic white (NHW) Americans, but the relative contributions of biological versus access to care remain poorly characterized. This study used two nationwide cohorts in different healthcare contexts to study health system effects on this disparity.

Methods: We used data from the Surveillance, Epidemiology, and End Results (SEER) registry as well as the United States Veterans Health Administration (VA) to identify adults diagnosed with colorectal cancer between 2010 and 2020 who identified as non-Hispanic Black (NHB) or non-Hispanic white (NHW).

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Objective: To assess acceptability and feasibility of rapid at-home COVID-19 testing and reporting of test results among individuals seeking care at community health centers (CHCs) and their household members.

Methods: Participants were recruited from 2 Community Health Centers during a clinic visit or a community event. Over-the-counter COVID-19 tests were distributed to participants for self-testing and to offer testing to household members.

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The worldwide cancer burden is growing, and populations residing in low- and middle-income countries (LMICs) are experiencing a disproportionate extent of this growth. Breast, colorectal, and cervical cancers are among the top 10 most frequently diagnosed malignancies, and they also account for a substantial degree of cancer mortality internationally. Effective screening strategies are available for all three of these cancers.

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Background: Colorectal cancer (CRC) screening is underused, particularly among low-income and minoritized populations, for whom the coronavirus disease 2019 (COVID-19) pandemic has challenged progress in achieving equity.

Methods: A hub-and-spoke model was used. The hub was a nonacademic organization and the spokes were three community health center (CHC) systems overseeing numerous clinic sites.

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Background: Intake of polyunsaturated fatty acids (PUFA) may affect mortality following breast cancer; however, epidemiological studies have relied on the self-reported assessment of PUFA intake. Herein, we examined the associations between red blood cell (RBC) PUFAs and mortality.

Methods: This nested case-control study included 1,104 women from the Women's Healthy Eating and Living study, a multistate randomized controlled trial.

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Objective: To assess differences in psychosocial and mental health outcomes between older lesbian and bisexual women compared to heterosexual women.

Design: Cross sectional study.

Setting: The study was carried out in the California Teachers Study, a prospective cohort study.

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Importance: Ensuring valid informed consent (IC) prior to enrollment in clinical trials is a fundamental ethical right.

Objective: To assess whether social determinants of health (SDOH) and related sociocontextual factors are associated with parental IC comprehension in therapeutic childhood cancer clinical trials.

Design, Setting, And Participants: This cross-sectional study prospectively enrolled 223 parents of children with newly diagnosed cancer at Rady Children's Hospital San Diego, a large quaternary academic center in California, from October 1, 2014, to March 31, 2021.

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  • A recent study analyzed genetic data from over 156,000 prostate cancer cases and 788,000 controls from diverse populations, significantly increasing the representation of non-European participants.
  • Researchers identified 187 new genetic risk variants for prostate cancer, bringing the total to 451, enhancing understanding of genetic factors across different ancestries.
  • The developed genetic risk score (GRS) showed varying risk levels for prostate cancer among different ancestry groups, highlighting its potential for better risk assessment, especially in men of African descent.
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  • - The study aimed to investigate how well diagnostic tests for iron-deficiency anemia (IDA) and hematochezia are completed and the time it takes for veterans under 50 to get these tests done.
  • - Conducted from 1999 to 2019 within the Veterans Health Administration, the cohort included over 248,000 veterans diagnosed with either IDA or hematochezia, with a focus on demographics and diagnostic factors.
  • - Results showed that only 22% of veterans with IDA and 40% of those with hematochezia completed the necessary diagnostic workups within two years, with notable disparities based on age, gender, and race.
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Sodium-glucose cotransporter inhibitors (SGLT2i) have demonstrated a reduction in cardiovascular events in diabetes and heart failure (HF). The mechanisms underlying this benefit are not well known and data are contradictory. The purpose of this study is to analyse the effect of dapagliflozin on cardiac structure and function in patients with normal ejection fraction.

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Background: Guidelines recommend screening for colorectal cancer (CRC), but participation and abnormal test follow up rates are suboptimal, with disparities by demography. Evidence-based interventions exist to promote screening, but community adoption and implementation are limited.

Methods: The San Diego Accelerating Colorectal Cancer Screening and Follow-up through Implementation Science (ACCSIS) program is an academic-community partnership testing regional implementation of a Hub-and-Spoke model for increasing CRC screening and follow-up.

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Background: The genetic code does not fully explain individual variability and inheritance of susceptibility to endocrine conditions, suggesting the contribution of epigenetic factors acting across generations.

Methods: We used a mouse model of developmental thyrotoxicosis ( mouse) to analyze endocrine outcomes in the adult offspring of males using standard methods for body composition, and baseline and fasting hormonal and gene expression determinations in serum and tissues of relevance to the control of energy balance.

Results: Compared to controls, adult females with an exposed father (EF females) exhibited higher body weight and fat mass, but not lean mass, a phenotype that was much milder in EF males.

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  • A genome-wide study explored gene-environment interactions (G×E) to identify variants that could impact breast cancer risk, analyzing data from around 72,285 breast cancer cases and 80,354 controls.
  • Researchers found two specific SNP-risk factor pairs that showed a significant association with breast cancer risk, including variations related to adult height and age at menarche.
  • Overall, the study concluded that G×E interactions contribute minimally to the heritability of breast cancer and don't significantly enhance risk prediction for the disease.
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A cancer diagnosis thrusts patients and caregivers into a foreign world of health care with systems, protocols, and norms that can leave little room for individual needs and circumstances. Quality and efficacious oncology care requires clinicians to partner with patients and caregivers to understand and incorporate their needs, values, and priorities into information sharing, decision making, and care provision. This partnership is necessary for effective patient- and family-centered care and access to individualized and equitable information, treatment, and research participation.

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Background: Cervical and other vaccine-preventable HPV-associated cancers disproportionately impact Hispanic/Latinos in the USA. HPV vaccine uptake may be impacted by community agreement with common HPV vaccine misperceptions. It is unknown whether Hispanics/Latinos have a greater agreement with these misperceptions relative to non-Hispanic whites.

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Pentacyclic triterpenes, including lupeol, α- amyrin, and β-amyrin, present a large range of biological activities including anti-inflammatory, anti-cancer, and gastroprotective properties. The phytochemistry of dandelion () tissues has been widely described. Plant biotechnology offers an alternative for secondary metabolite production and several active plant ingredients are already synthesized through in vitro cultures.

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Introduction: Data on the associations of prepandemic physical activity and sedentary behavior with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and coronavirus disease 2019 (COVID-19) severity, particularly milder illness, have been limited.

Methods: We used data from 43,913 participants within the Nurses' Health Study II and Health Professionals Follow-Up Study who responded to periodic COVID-related surveys from May 2020 through March 2021. History of physical activity from the prepandemic period was assessed as the metabolic equivalents of task (MET)-hours per week of various activities of different intensity and sedentary behavior assessed from reports of time spent sitting from questionnaires completed 2016-2017.

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Background: Post-treatment mastalgia is a common complaint in up to 68% of patients after treatment. This symptom is worrisome to patients as many believe it is a sign of recurrence. The current study was performed to evaluate if post-treatment mastalgia is associated with a second breast cancer diagnosis.

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Article Synopsis
  • Many variants found in disease susceptibility genes are classified as variants of uncertain significance (VUS), making their interpretation critical for clinical decisions.
  • This study introduces a new likelihood ratio-based method that takes into account gene-specific age-related penetrance to better analyze the pathogenicity of these variants.
  • The method outperformed traditional approaches in simulated and real datasets, allowing for clearer classifications of variants as pathogenic or non-pathogenic for conditions like breast cancer, and includes user-friendly tools for researchers.
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