Publications by authors named "Anna K Seitz"

Article Synopsis
  • A study conducted from November 2020 to June 2023 assessed the performance of SARS-CoV-2 rapid antigen tests (RDTs) compared to standard RT-qPCR testing among a large group of patients and staff in a hospital setting.
  • The analysis of nearly 78,800 paired results revealed that RDTs had a sensitivity of 34.5% and a specificity of 99.6%, with sensitivity decreasing as fewer symptomatic infections occurred over the course of the pandemic.
  • The findings suggest that RDTs are still effective for diagnosing COVID-19 in symptomatic patients and could be useful for identifying other respiratory infections in the future, despite their declining sensitivity linked to vaccination and the spread of the Omicron variant
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Introduction: Continent cutaneous urinary diversion post-cystectomy is an established approach addressing both oncological and functional indications. However, there is a noticeable gap of evidence when it comes to comparing outcomes between these indications, especially concerning the technique of Mainz pouch I (MPI). This study aimed to close the gap by analyzing the long-term functional and renal outcomes of patients with MPI after cystectomy due to both benign and malign bladder pathologies.

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Introduction: Studies comparing refluxing versus non-refluxing ureteric implantation in continent cutaneous urinary diversion (CCUD) are scarce and often characterized by heterogeneous study populations. This work therefore aimed at comparing both techniques regarding long-term outcomes in a propensity-scored approach.

Methods: We identified n = 19 patients, totaling n = 38 renal units (RU), who underwent CCUD surgery at our hospital out of a pool of 120 patients.

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Introduction: Fitness trackers can provide continuous monitoring of vital signs and thus have the potential to become a complementary, mobile and effective tool for early detection of patient deterioration and post-operative complications.

Methods: To evaluate potential implementations in acute care setting, we included 36 patients after moderate to major surgery in a recent randomised pilot trial to compare the performance of vital sign monitoring by three different fitness trackers (Apple Watch 7, Garmin Fenix 6pro and Withings ScanWatch) with established standard clinical monitors in post-anaesthesia care units and monitoring wards.

Results: During a cumulative period of 56 days, a total of 53,197 heart rate (HR) measurements, as well as 12,219 measurements of the peripheral blood oxygen saturation (SpO) and 28,954 respiratory rate (RR) measurements were collected by fitness trackers.

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In metastatic castration-resistant prostate cancer (mCRPC) patients treated with prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT), the recently proposed criteria for evaluating response to PSMA PET (RECIP 1.0) based on Ga- and F-labeled PET agents provided prognostic information in addition to changes in prostate-specific antigen (PSA) levels. Our aim was to evaluate the prognostic performance of this framework for overall survival (OS) in patients undergoing RLT and imaged with [F]PSMA-1007 PET/CT and compare the prognostic performance with the PSA-based response assessment.

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Article Synopsis
  • * Out of 35 patients, 74% met VISION criteria and demonstrated significantly better OS (12 months vs. 3 months) and PFS (5 months vs. 1 month) compared to those who did not.
  • * The findings suggest that the VISION criteria may provide better treatment eligibility than TheraP criteria for end-stage prostate cancer patients when considering PSMA RLT.
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Background: In addition to erectile dysfunction, urinary incontinence is the most common functional limitation after radical prostatectomy (RPE) for prostate cancer (PCa). The German S3 guideline recommends informing patients about possible effects of the therapy options, including incontinence. However, only little data on continence from routine care in German-speaking countries after RPE are currently available, which makes it difficult to inform patients.

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Introduction: A 65-year-old female patient could no longer take oral food or medications due to a duodenal occlusion associated with metastatic urothelial carcinoma. Her pre-existing chemotherapy-induced polyneuropathy had been well treated with pregabalin orally.

Methods: Since only preparations for oral use of pregabalin are available, pregabalin suppositories were compounded by the hospital pharmacy for rectal use in this patient.

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Article Synopsis
  • Overweight patients with prostate cancer undergoing PSMA-directed therapy showed better overall survival (OS) rates compared to normal-weight patients, while sarcopenia did not significantly impact OS.
  • The study analyzed body composition metrics, including BMI and CT-derived fat areas, in 171 patients to evaluate their predictive value for OS using statistical methods like Kaplan-Meier curves.
  • Key findings indicated that higher BMI, lower levels of inflammatory markers like C-reactive protein (CRP) and lactate dehydrogenase (LDH), and a longer time from diagnosis to therapy were strong predictors of better OS.
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Background: Quantification of [ Ga]-labeled PSMA PET predicts response in patients with prostate cancer (PC) who undergo PSMA-targeted radioligand therapy (RLT). Given the increasing use [F]-labeled radiotracers, we aimed to determine whether the uptake derived from [F]PSMA-1007 PET can also identify responders and to assess its prognostic value relative to established clinical parameters.

Methods: We retrospectively analyzed 103 patients with metastatic, castration-resistant PC who were treated with [Lu]Lu-PSMA I&T.

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Introduction: Contrary to current recommendations, palliative co-management of tumor patients often occurs late in daily clinical practice. Palliative care specialist (PCS) co-management should be considered at the latest after a 6-month prognosis has been presumed. Therefore, identifying patients with a limited prognosis is a reasonable measure.

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Objectives: Antigen rapid diagnostic tests (RDTs) for SARS coronavirus 2 (SARS-CoV-2) are quick, widely available, and inexpensive. Consequently, RDTs have been established as an alternative and additional diagnostic strategy to quantitative reverse transcription polymerase chain reaction (RT-qPCR). However, reliable clinical and large-scale performance data specific to a SARS-CoV-2 virus variant of concern (VOC) are limited, especially for the Omicron VOC.

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Background: Prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT) is increasingly incorporated in the therapeutic algorithm of patients with metastatic castration-resistant prostate cancer (mCRPC). We aimed to elucidate the predictive performance of early biochemical response for overall survival (OS).

Materials And Methods: In this bicentric analysis, we included 184 mCRPC patients treated with Lu-PSMA RLT.

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Article Synopsis
  • The study looked at men with advanced prostate cancer who received a special type of treatment called PSMA-targeted radioligand therapy (RLT) and measured changes in a substance called PSA to see how well they were responding.
  • Out of 176 patients, some had their PSA levels go down consistently, some had them go up consistently, and others had levels that changed back and forth.
  • Those whose PSA levels decreased lived longer on average than those whose levels increased, while those with fluctuating PSA levels also lived longer than those with rising levels, but their lifespan was similar to those whose levels went down.
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Background: Radioligand therapy (RLT) with Lu-labeled prostate-specific membrane antigen (PSMA) ligands is associated with prolonged overall survival (OS) in patients with advanced, metastatic castration-resistant prostate cancer (mCRPC). A substantial number of patients, however, are prone to treatment failure. We aimed to determine clinical baseline characteristics to predict OS in patients receiving [Lu]Lu-PSMA I&T RLT in a long-term follow-up.

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Article Synopsis
  • Prostate-specific membrane antigen (PSMA) PET scans are used to assess treatment responses in metastatic prostate cancer by measuring parameters like standardized uptake value (SUV) and PSMA-positive tumor volume (PSMA-TV), but calculating whole-body PSMA-TV can be time-consuming.
  • A study with 65 patients evaluated the effectiveness of using only a few of the hottest or largest lesions to quantify changes in PSMA-TV and other related parameters, comparing these results with whole-body calculations and correlating them with serum prostate-specific antigen (PSA) levels.
  • Results indicated that in patients with metastatic hormone-sensitive prostate cancer, there were no significant differences in the calculated parameters; however, variations were noted in patients treated with taxanes and radiol
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Purpose: The purpose of this study was to immunohistochemically validate the primary tumor PSMA expression in prostate cancer (PCa) patients imaged with [Ga]Ga-PSMA PET/CT prior to surgery, with special consideration of PET-negative cases.

Methods: The study included 40 men with newly diagnosed treatment-naïve PCa imaged with [Ga]Ga-PSMA I&T PET/CT as part of the diagnostic work-up prior to radical prostatectomy. All primary tumors were routinely stained with H&E.

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Background: Labelled with lutetium-177, the urea-based small molecules PSMA I&T and PSMA-617 are the two agents most frequently used for radioligand therapy (RLT) in patients with advanced metastatic castration-resistant and prostate-specific membrane antigen (PSMA) expressing prostate cancer (mCRPC). In this matched-pair analysis, we aimed to compare the toxicity and efficacy of both agents for PSMA-directed RLT.

Materials And Methods: A total of 110 mCRPC patients from two centres were accrued, 55 individuals treated with [Lu]Lu-PSMA I&T, and a matched cohort of 55 patients treated with [Lu]Lu-PSMA-617.

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(1) Background: Prostate-specific membrane antigen (PSMA)-directed radioligand therapy (RLT) has shown remarkable results in patients with advanced prostate cancer. We aimed to evaluate the toxicity profile of the PSMA ligand [Lu]Lu-PSMA I&T. (2) Methods: 49 patients with metastatic, castration-resistant prostate cancer treated with at least three cycles of [Lu]Lu-PSMA I&T were evaluated.

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Prostate-specific membrane antigen (PSMA)-directed positron emission tomography/computed tomography (PET/CT) is increasingly utilized for staging of men with prostate cancer (PC). To increase interpretive certainty, the standardized PSMA reporting and data system (RADS) has been proposed. Using PSMA-RADS, we characterized lesions in 18 patients imaged with F-PSMA-1007 PET/CT for primary staging and determined the stability of semi-quantitative parameters.

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Introduction: Positron emission tomography/computer tomography (PET/CT) targeting the prostate-specific membrane antigen (PSMA) is crucial for the assessment of adequate PSMA expression in patients with metastatic castration-resistant prostate cancer (mCRPC) prior to PSMA radioligand therapy (PSMA RLT). Moreover, initial dual tracer staging using combined PSMA and [F]fluorodeoxyglucose (FDG) PET/CT provides relevant information, since discordant FDG-positive but PSMA-negative (FDG+/PSMA-) lesions constitute a negative prognostic marker of overall survival (OS) after PSMA RLT. However, little is known about the prognostic implications of dual tracer imaging for restaging at follow-up.

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Background: Prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT) with Lu-labeled PSMA ligands has achieved remarkable results in advanced disease stages of metastatic castration-resistant prostate cancer (mCRPC). However, not all patients benefit from this therapy. Different treatment responses could be explained by tumor heterogeneity triggered by progression and the number of prior treatments.

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Article Synopsis
  • The study investigates how androgen deprivation therapy (ADT) affects the effectiveness of Ga-PSMA ligand PET/CT scans in detecting tumor lesions in recurrent prostate cancer patients.
  • Researchers compared two groups of 62 patients: one that received ADT before imaging and one that didn't, finding that the ADT group had a significantly higher detection rate (88.7% vs. 72.6%).
  • Results indicate that patients on ADT have more PSMA-positive lesions and higher tumor volumes, suggesting that these patients may have more advanced disease; therefore, stopping ADT prior to imaging is not advisable.
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(1) Background: Prostate-specific membrane antigen (PSMA)-derived tumour volume (PSMA-TV) and total lesion PSMA (TL-PSMA) from PSMA PET/CT scans are promising biomarkers for assessing treatment response in prostate cancer (PCa). Currently, it is unclear whether different software tools for assessing PSMA-TV and TL-PSMA produce comparable results. (2) Methods: Ga-PSMA PET/CT scans from = 21 patients with castration-resistant PCa (CRPC) receiving chemotherapy were identified from our single-centre database.

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