Publications by authors named "Amanda M De Hoedt"

Importance: Prostate cancer (PC) care has evolved rapidly as a result of changes in prostate-specific antigen testing, novel imaging, and newer treatments. The impact of these changes on PC epidemiology and racial disparities across disease states remains underexplored.

Objective: To characterize racial and ethnic differences in the epidemiology of PC states, including nonmetastatic hormone-sensitive PC (nmHSPC), metastatic HSPC (mHSPC), nonmetastatic castration-resistant PC (nmCRPC), and metastatic CRPC (mCRPC).

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Background: There are no population-level studies assessing F-fluciclovine (fluciclovine) utilization of Positron emission tomography/computed tomography (PET/CT) for biochemically recurrent prostate cancer (PC). We assessed fluciclovine PET/CT in the Veterans Affairs Health Care System.

Methods: Of 1153 men with claims suggesting receipt of fluciclovine PET/CT, we randomly reviewed charts of 300 who indeed underwent fluciclovine PET/CT.

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Article Synopsis
  • - The study examined de novo oligometastatic hormone-sensitive prostate cancer (omHSPC) in veterans, focusing on its clinical outcomes and treatment patterns, analyzing 400 patients diagnosed from 2015 to 2020.
  • - About 20% of the patients had omHSPC, which was associated with better overall survival (44.4 months) and castration-resistant prostate cancer-free survival (27.6 months) compared to non-oligometastatic cases, which had lower survival rates.
  • - Although omHSPC patients received more targeted therapies like radiation (14% vs. 2%), overall usage of potentially curative treatments was still low, indicating a need for more research on combined
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Objective: To describe patient characteristics and pathological stage at bladder cancer (BCa) diagnosis in a diverse population within a national, equal-access healthcare system.

Methods: This retrospective cohort study identified 15 966 men diagnosed with BCa in the Veterans Affairs (VA) healthcare system from 2000 to 2020. The primary outcome was pathological stage at diagnosis, determined by index transurethral resection of bladder tumour.

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Background: We previously reported that outcomes after radical prostatectomy (RP) were similar among non-Hispanic Black, non-Hispanic White, and Hispanic White Veterans Affairs (VA) patients. However, prostate cancer (PC) mortality in Puerto Rican Hispanics (PRH) may be higher than in other Hispanic groups. Data focused on PRH patients is sparse; thus, we tested the association between PR ethnicity and outcomes after RP.

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Purpose: To determine intravesical instillation patterns among women receiving treatment for interstitial cystitis/bladder pain syndrome (IC/BPS).

Methods: Using the Veterans Affairs Informatics and Computing Infrastructure, active female users of the Veterans Affairs system with an ICD-9 diagnosis of IC/BPS (595.1) were randomly sampled.

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Background: Androgen deprivation therapy (ADT), commonly delivered via a luteinizing hormone-releasing hormone (LHRH) agonist, is the standard treatment for advanced prostate cancer (PC). While quite effective, it has been associated with an increased risk of major adverse cardiovascular events (MACE). The exact mechanisms are not clear.

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Purpose: Prostate cancer represents the most common cancer diagnosis in Black men and is the second leading cause of cancer death in this population. Multilevel disparities have been well-documented in Black men with prostate cancer and play a role in poorer survival outcomes when compared with White men with prostate cancer. In this review, we highlight the changing trend in disparities for systemic therapy outcomes in Black men diagnosed with metastatic prostate cancer.

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Purpose: Obesity and smoking have been associated with poor prostate cancer (PC) outcomes. We investigated associations between obesity and biochemical recurrence (BCR), metastasis, castrate resistant-PC (CRPC), PC-specific mortality (PCSM), and all-cause mortality (ACM) and examined if smoking modified these associations.

Methods: We analyzed SEARCH Cohort data from men undergoing RP between 1990 and 2020.

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Importance: To date, limited data exist regarding the association between Agent Orange and bladder cancer, and the Institute of Medicine concluded that the association between exposure to Agent Orange and bladder cancer outcomes is an area of needed research.

Objective: To examine the association between bladder cancer risk and exposure to Agent Orange among male Vietnam veterans.

Design, Setting, And Participants: This nationwide Veterans Affairs (VA) retrospective cohort study assesses the association between exposure to Agent Orange and bladder cancer risk among 2 517 926 male Vietnam veterans treated in the VA Health System nationwide from January 1, 2001, to December 31, 2019.

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Objective: To compare health-related quality of life (HRQOL) and pelvic pain levels over time in patients with interstitial cystitis/bladder pain syndrome (IC/BPS) and those with other pelvic pain conditions (OPPC) including chronic prostatitis, dyspareunia, vaginismus, vulvodynia, and vulvar vestibulitis.

Methods: We prospectively enrolled male and female patients from any Veterans Health Administration (VHA) center in the US. They completed the Genitourinary Pain Index (GUPI) quantifying urologic HRQOL and the 12-Item Short Form Survey version 2 (SF-12) quantifying general HRQOL at enrollment and 1 year later.

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Background: The prognosis of diabetic men with advanced prostate cancer is poorly understood and understudied. Hence, we studied associations between diabetes and progression to metastases, prostate cancer-specific mortality (PCSM) and all-cause mortality (ACM) in men with nonmetastatic castration-resistant prostate cancer (nmCRPC).

Methods: Data from men diagnosed with nmCRPC between 2000 and 2017 at 8 Veterans Affairs Health Care Centers were analyzed using Cox regression to determine HRs and 95% confidence intervals (CI) for associations between diabetes and outcomes.

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Article Synopsis
  • This study examined the effectiveness of blue light cystoscopy (BLC) compared to white light cystoscopy (WLC) for detecting non-muscle invasive bladder cancer (NMIBC) in 378 patients from the Veterans Affairs system.
  • Results showed that BLC led to a longer median time before recurrence (40 months) compared to WLC (26 months) and significantly reduced recurrence risk (with a Hazard Ratio of 0.70).
  • The study concluded that BLC is more effective in prolonging time to recurrence without significant racial disparities in outcomes among Black and White patients.
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Introduction: Radium-223 was approved for metastatic castration-resistant prostate cancer based on the ALSYMPCA trial. We characterize radium-223 treatment patterns and overall survival (OS) in a large equal access health system.

Methods: We identified all men within the Veterans Affairs (VA) Healthcare System who received radium-223 between January 2013 and September 2017.

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Background: One challenge in transgender research is reliably identifying patients through electronic medical records data, as there is no universal transgender International Classification of Diseases (ICD) code, but rather multiple ICD codes that can be used.

Aim: To explore the sensitivity and specificity of 5 commonly used ICD codes to identify transgender patients overall and transgender women specifically (assigned male sex at birth) by using data from the Veterans Affairs (VA), the largest integrated health system in the United States.

Methods: Patients aged ≥18 years were identified via ICD-9 codes 302.

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Purpose: The Oncotype DX Genomic Prostate Score (GPS) assay has been validated as a strong prognostic indicator of adverse pathology, biochemical recurrence, distant metastasis (DM), and prostate cancer (PCa)-related death (PCD) in men with localized PCa after radical prostatectomy. However, it has yet to be tested in men undergoing external beam radiation therapy (EBRT), for whom assessing PCa progression risk could inform decisions on treatment intensity. We analyzed whether GPS results are associated with time to biochemical failure (BCF), DM, and PCD after EBRT in men with localized PCa and whether the association is modified by race.

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Importance: Interstitial cystitis/bladder pain syndrome (IC/BPS) is an immense burden to both patients and the American healthcare system; it is notoriously difficult to diagnose. Prevalence estimates vary widely (150-fold range in women and >500-fold range in men).

Objectives: We aimed to create accurate national IC/BPS prevalence estimates by employing a novel methodology combining a national population-based dataset with individual chart abstraction.

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Purpose: Prior studies suggest that certain foods exacerbate interstitial cystitis/bladder pain syndrome symptoms. However, these studies were limited in size and demographics. We assessed the presence of diet sensitivities among patients with interstitial cystitis/bladder pain syndrome and compared them with patients with other pelvic pain conditions and healthy controls.

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Background: Follicle stimulating hormone (FSH) is a pituitary hormone that helps regulate testosterone homeostasis. Although it is generally accepted that FSH levels increase with LHRH-agonist therapy for prostate cancer (PC), the specific impact of FSH levels on risk of PC diagnosis is largely unknown. The objective of this study was to perform a population-level analysis to assess the association between FSH levels and PC diagnosis.

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Background: We compared six commonly used logistic regression methods for accommodating missing risk factor data from multiple heterogeneous cohorts, in which some cohorts do not collect some risk factors at all, and developed an online risk prediction tool that accommodates missing risk factors from the end-user.

Methods: Ten North American and European cohorts from the Prostate Biopsy Collaborative Group (PBCG) were used for fitting a risk prediction tool for clinically significant prostate cancer, defined as Gleason grade group ≥ 2 on standard TRUS prostate biopsy. One large European PBCG cohort was withheld for external validation, where calibration-in-the-large (CIL), calibration curves, and area-underneath-the-receiver-operating characteristic curve (AUC) were evaluated.

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Sociodemographic and lifestyle factors may play a role in determining whether patients with clinically localized prostate cancer (PC) are managed with active surveillance (AS), radical prostatectomy (RP), or radiation therapy (RT); however, these relationships have not been well examined. In a cross-sectional study conducted within an equal access healthcare system, multivariable adjusted regression analysis revealed that living with a spouse or partner was associated with a 65% lower chance of being managed by RT (P = 0.001) and 57% lower risk of being managed by AS (P = 0.

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Article Synopsis
  • The study aimed to investigate differences in genomic characteristics and gene expression between African American (AA) and European American (EA) patients with high-risk nonmuscle-invasive bladder cancer (NMIBC).
  • A retrospective analysis of 26 patients revealed that while subtype distributions were similar, AAs showed upregulation of 10 specific genes linked to cancer progression and treatment resistance compared to EAs.
  • Results indicated potential racial differences in therapeutic responses and underlying biological mechanisms, suggesting that gene expression variations could inform race-based approaches to bladder cancer treatment.
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Objective: To describe prescription prevalence of oral bladder pain medications among women with interstitial cystitis/bladder pain syndrome (IC/BPS) and to compare with current treatment guidelines.

Methods: We sampled female patients with an ICD-9/10 diagnosis of IC/BPS (595.1/N30.

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