A commissioning protocol for portal imaging-based radiotherapy in vivo dosimetry systems.

Background And Purpose: With the availability of commercial electronic portal imaging detector-based in vivo dosimetry (EPID-based IVD) solutions, many radiotherapy departments are adopting this technology. However, comprehensive commissioning guidance is lacking. This study aims to provide a protocol for testing the accuracy and sensitivity of EPID-based IVD systems.

Comparing the contents of patient-reported outcome measures for fatigue: EORTC CAT Core, EORTC QLQ-C30, EORTC QLQ-FA12, FACIT, PRO-CTCAE, PROMIS, Brief Fatigue Inventory, Multidimensional Fatigue Inventory, and Piper Fatigue Scale.

Background: To assess fatigue in cancer patients, several patient-reported outcome measures (PROMs) are available that differ in content. To support the selection of suitable measures for specific applications and to evaluate possibilities of quantitative linking, the present study provides a content comparison of common fatigue measures, scales, and item banks. We included the EORTC CAT Core, EORTC QLQ-FA12, EORTC QLQ-C30, FACIT-F, PROMIS Fatigue (Cancer item bank v1.

General Practitioners' Experiences With Implementing Colon or Prostate Cancer Survivorship Care in Primary Care: A Cross-Sectional Survey Nested Within Two Randomized-Controlled Trials.

Purpose: To evaluate general practitioners' (GPs) experiences with providing cancer survivorship care and explore readiness for implementation.

Methods: This cross-sectional survey study was nested within two randomized-controlled trials conducted in the Netherlands between 2015 and 2023, comparing GP- with specialist-led survivorship care for patients with colon or prostate cancer. An adapted version of the normalisation measure development (NoMAD) survey was distributed among participating GPs.

Long-term quality of life in patients with bladder cancer following radical cystectomy.

Objectives: To investigate changes in quality of life (QoL) up to 8 years after radical cystectomy (RC) and compare QoL after RC with a gender- and age-matched Dutch normative population. Furthermore, we aimed to identify patient characteristics associated with QoL and QoL trajectories after RC.

Patients And Methods: Patients with bladder cancer were invited to complete QoL questionnaires at 3-month intervals in the first year and yearly thereafter.

Annotation practices in computational pathology: a European Society of Digital and Integrative Pathology (ESDIP) survey study.

Integrating digital pathology (DP) and artificial intelligence (AI) algorithms can potentially improve diagnostic practice and precision medicine. Developing reliable, generalizable, and comparable AI algorithms depends on access to meticulously annotated data. However, achieving this requires robust collaboration among pathologists, computer scientists and other researchers to ensure data quality and consistency.

Impact of HA-PCI on self-reported cognitive functioning and brain metastases in small-cell lung cancer: Pooled findings of NCT01780675 and PREMER trials.

Background: Cognitive decline is an arising concern in patients who need cranial irradiation. We used the pooled longitudinal individual patient data of two phase III trials: NCT01780675 and PREMER to investigate whether hippocampal avoidance (HA)-PCI is associated with improved self-reported cognitive functioning (SRCF) compared with PCI without increasing brain metastases (BM) development within the HA area.

Methods: Patients with stage I-IV small cell lung cancer (SCLC) were randomized to PCI or HA-PCI.

Comparing epidemiological and clinical data from RPS patients documented in a German cancer registry to a cohort from TARPSWG reference centres.

Purpose: Retroperitoneal sarcomas (RPS) are rare, heterogeneous tumours. Treatment recommendations are mainly derived from cohorts treated at reference centres. The applicability of data from cancer registries (CR) is controversial.

Impact of personalized response-directed surgery and adjuvant therapy on survival after neoadjuvant immunotherapy in stage III melanoma: Comparison of 3-year data from PRADO and OpACIN-neo.

Background: Pathologic response following neoadjuvant immune checkpoint blockade (ICB) in stage III melanoma serves as a surrogate marker for long-term outcomes. This may support more personalized, response-directed treatment strategies.

Methods: The OpACIN-neo and PRADO trials were phase 2 studies evaluating neoadjuvant treatment with ipilimumab and nivolumab in stage III melanoma.

Nivolumab plus Ipilimumab in Microsatellite-Instability-High Metastatic Colorectal Cancer.

Background: Patients with microsatellite-instability-high (MSI-H) or mismatch-repair-deficient (dMMR) metastatic colorectal cancer have poor outcomes with standard chemotherapy with or without targeted therapies. Nivolumab plus ipilimumab has shown clinical benefit in nonrandomized studies of MSI-H or dMMR metastatic colorectal cancer.

Methods: In this phase 3 open-label trial, we randomly assigned patients with unresectable or metastatic colorectal cancer and MSI-H or dMMR status according to local testing to receive, in a 2:2:1 ratio, nivolumab plus ipilimumab, nivolumab alone, or chemotherapy with or without targeted therapies.

Evaluation of the recently established Dutch nationwide Archipelago of Ovarian Cancer Research biobank.

Fundamental and translational research in ovarian cancer aims to enhance understanding of disease mechanisms and improve treatment and survival outcomes. To support this, we established the Dutch multicenter, interdisciplinary Archipelago of Ovarian Cancer Research (AOCR) infrastructure, which includes a nationwide biobank. In this study, we share our experiences in establishing the infrastructure, offer guidance for similar initiatives, and evaluate the AOCR patient cohort.

Chemotherapeutic agents and leucine deprivation induce codon-biased aberrant protein production in cancer.

Messenger RNA (mRNA) translation is a tightly controlled process frequently deregulated in cancer. Key to this deregulation are transfer RNAs (tRNAs), whose expression, processing and post-transcriptional modifications are often altered in cancer to support cellular transformation. In conditions of limiting levels of amino acids, this deregulated control of protein synthesis leads to aberrant protein production in the form of ribosomal frameshifting or misincorporation of non-cognate amino acids.

General practitioners' perspectives on targeted breast ultrasound as primary diagnostic test in women with focal breast complaints: An interview study.

Introduction: The high diagnostic accuracy of ultrasound opens possibilities to shift towards an initial ultrasound approach for the evaluation of focal breast complaints in women, with only additional DBT in case of unclear or suspicious ultrasound findings. As general practitioners (GPs) are important stakeholders in the diagnostic pathway, this study focuses on GPs perspective on ultrasound as primary diagnostic imaging test, as well as the GP referral process.

Methods: Sixteen Dutch GPs were interviewed on the referral process and their perceived barriers and facilitators of initial ultrasound diagnostics in women presenting with focal breast complaints.

UGT8 mediated sulfatide synthesis modulates BAX localization and dictates apoptosis sensitivity of colorectal cancer.

Elevated de novo lipid synthesis is a remarkable adaptation of cancer cells that can be exploited for therapy. However, the role of altered lipid metabolism in the regulation of apoptosis is still poorly understood. Using thermal proteome profiling, we identified Manidipine-2HCl, targeting UGT8, a key enzyme in the synthesis of sulfatides.

Relevant factors for policy concerning comprehensive genomic profiling in oncology: stakeholder perspectives.

Background: Comprehensive genomic profiling (CGP) can identify targets beyond standard of care, potentially revolutionizing personalized cancer management. However, conducting well designed studies in this rapidly evolving field is complex and demands time and investments. Consequently, the total added value of CGP remains uncertain.

DNA sequencing in oncology: a focus group study on a duty to recontact.

Introduction: Particularly in genetics, former results can gain new meaning in the course of time. This raises questions about when professionals should recontact patients with new information. The aim of this focus group study is to clarify how different stakeholders in oncology think about the extent and limits of a duty to recontact.

Clinical implementation of RTT-only CBCT-guided online adaptive focal radiotherapy for bladder cancer.

Purpose: The study assesses the clinical implementation of radiation therapist (RTT)-only Conebeam CT (CBCT)-guided online adaptive focal radiotherapy (oART) for bladder cancer, by describing the training program, analyzing the workflow and monitoring patient experience.

Materials And Methods: Bladder cancer patients underwent treatment (20 sessions) on a ring-based linac (Ethos, Varian, a Siemens Healthineers Company, USA). Commencing April 2021, 14 patients were treated by RTTs supervised by the Radiation Oncologist (RO) and Medical Physics Expert (MPE) in a multidisciplinary workflow.

Evaluation of deep learning-based target auto-segmentation for Magnetic Resonance Imaging-guided cervix brachytherapy.

Background And Purpose: The target structures for cervix brachytherapy are segmented by radiation oncologists using imaging and clinical information. At the first fraction, this is performed manually from scratch. For subsequent fractions the first fraction segmentations are rigidly propagated and edited manually.

ZEB2 drives intra-tumor heterogeneity and skin squamous cell carcinoma formation with distinct EMP transition states.

About 5% of patients with cutaneous squamous cell carcinoma (cSCC) have a poor prognosis which is associated with a loss of tumor differentiation, invasion and metastasis, all of which are linked to the process of epithelial-to-mesenchymal plasticity (EMP). Here, we showed that the EMP-associated transcription factor ZEB2 drives cSCC heterogeneity which resembles biphasic carcinosarcoma-like tumors. Single cell RNA sequencing revealed distinct subpopulations ranging from fully epithelial (E) to intermediate (EM) to fully mesenchymal (M), associated with the gradual loss of cell surface markers EPCAM, CDH1, ITGB4, and CD200.

A Population Pharmacokinetic Study to Evaluate Doxorubicin Exposure Across All Age Groups.

Background: The effect of age on doxorubicin pharmacokinetics remains inconclusive, especially in patients at the extremes of the age spectrum. We developed a population pharmacokinetic model to further investigate the impact of age on the pharmacokinetics of doxorubicin.

Methods: A three-compartment model, incorporating allometric scaling was developed to describe doxorubicin pharmacokinetics across all ages.