Publications by authors named "Cornelis van de Velde"

Article Synopsis
  • In early-stage breast cancer (EBC) patients, there is a need for biomarkers to predict the risk of late recurrence and the benefit from extended endocrine therapy (EET), specifically using the MammaPrint 70-gene assay to identify low-risk tumors.
  • The study analyzed postmenopausal women with hormone receptor-positive EBC from the IDEAL trial to see if the MammaPrint assay could help decide between 2.5 years and 5 years of treatment with letrozole.
  • Results showed that patients with low-risk tumors had a significant benefit of 10.1% for distant recurrence with longer treatment, while no significant benefits were found for high-risk or ultralow risk patients regarding treatment duration
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  • This study explores the significance of tumor budding (TB) in colorectal cancer, particularly focusing on intratumoral budding (ITB) in resection specimens and its feasibility in biopsy samples.* -
  • The research found that high-grade TB, whether intratumoral or peritumoral, is linked with worse outcomes such as advanced cancer stages and lower overall survival rates.* -
  • Results indicated that ITB is a strong predictor of overall survival and can help in improving risk assessment and predicting responses to neoadjuvant therapy in cancer patients, highlighting the need for TB evaluation in biopsies.*
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  • Organ preservation through the Watch and Wait (WW) approach in rectal cancer patients shows promise but poses a risk of local regrowth (LR), leading to higher rates of distant metastases (DM) compared to traditional surgery (TME).
  • A study comparing 508 LR patients managed by WW and 893 near-complete pathologic response (nPCR) patients after TME found a significantly higher DM rate in the LR group (22.8% vs. 10.2%).
  • The research concluded that patients with LR have poorer 3-year DM-free survival (75% vs. 87%) and highlight that leaving a primary undetectable tumor can result in worse overall outcomes.
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Background: The prognostic significance of T-cell densities in gastric cancer (GC) was previously demonstrated in surgical resection specimens. For prognosis or response prediction, it is preferable to identify biomarkers in pre-treatment biopsies; yet, its representativeness of the tumor immune microenvironment is unclear.

Objectives: This study aimed to evaluate the concordance and prognostic value of T-cell densities in paired biopsies and resections.

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Over the past decade, the treatment of rectal cancer has changed considerably. The implementation of TME surgery has, in addition to decreasing the number of local recurrences, improved surgical morbidity and mortality. At the same time, the optimisation of radiotherapy in the preoperative setting has improved oncological outcomes even further, although higher perineal infection rates have been reported.

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Background: A pathological complete response (pCR) following chemoradiation (CRT) or short-course radiotherapy (scRT) leads to a favourable prognosis in patients with rectal cancer. Total neo-adjuvant therapy (TNT) doubles the pCR rate, but it is unknown whether oncological outcomes remain favourable and whether the same characteristics are associated with pCR as after CRT.

Methods: Comparison between patients with pCR in the RAPIDO trial in the experimental [EXP] (scRT, chemotherapy, surgery, as TNT) and standard-of-care treatment [STD] (CRT, surgery, postoperative chemotherapy depending on hospital policy) groups.

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Purpose: Patients with early-stage hormone receptor-positive (HR+) breast cancer face a prolonged risk of recurrence even after adjuvant endocrine therapy. The Breast Cancer Index (BCI) is significantly prognostic for overall (0-10 years) and late (5-10 years) distant recurrence (DR) risk in N0 and N1 patients. Here, BCI prognostic performance was evaluated in HR+ postmenopausal women from the Tamoxifen and Exemestane Adjuvant Multinational (TEAM) trial.

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Aims: Lymph node metastases (LNM) are one of the most important prognostic indicators in solid tumours and a major component of cancer staging. Neoadjuvant therapy might influence nodal status by induction of regression. Our aim is to determine the prevalence and role of regression of LNM on outcomes in patients with rectal cancer.

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  • The study examines how sex affects outcomes in patients with resectable gastric cancer, focusing on histological subtype differences.
  • It analyzes data from the CRITICS-trial, comparing survival rates, toxicity, and compliance between male and female patients.
  • Results show that females have higher rates of positive tumor margins in diffuse gastric cancer and experience more treatment-related toxicity, but this does not significantly impact their treatment effectiveness.
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Background: Magnetic resonance (MR) imaging is the modality used for baseline assessment of locally advanced rectal cancer (LARC) and restaging after neoadjuvant treatment. The overall audited quality of MR imaging in large multicentre trials on rectal cancer is so far not routinely reported.

Materials And Methods: We collected MR images obtained within the Rectal Cancer And Pre-operative Induction Therapy Followed by Dedicated Operation (RAPIDO) trial and performed an audit of the technical features of image acquisition.

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Aims: Partial response to neoadjuvant chemoradiotherapy (CRT) presents with one of two main response patterns: shrinkage or fragmentation. This study investigated the relevance of these response patterns in rectal cancer, correlation with other response indicators, and outcome.

Methods And Results: The study included a test (n = 197) and a validation cohort (n = 218) of post-CRT patients with rectal adenocarcinoma not otherwise specified and a partial response.

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Tumor-infiltrating lymphocytes are associated with the survival of gastric cancer patients. T-cell densities in the tumor and its periphery were previously identified as prognostic T-cell markers for resectable gastric cancer. Immunohistochemistry for 5 T-cell markers, CD3, CD45RO, CD8, FOXP3, and granzyme B was performed on serial sections of N = 251 surgical resection specimens of patients treated with surgery only in the D1/D2 trial.

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Article Synopsis
  • The study focuses on the long-term recurrence risk in women with hormone receptor-positive, HER2-negative breast cancer, using data from the TEAM trial involving nearly 10,000 patients across multiple countries, including 2,754 from the Netherlands.
  • The research specifically evaluates the effectiveness of the CanAssist Breast (CAB) prognostic test in predicting ten-year clinical outcomes for Dutch patients, finding significant associations with risk stratification.
  • Results reveal that CAB identified 67.5% of patients as low-risk and 32.5% as high-risk at ten years, with high-risk patients showing worse distant recurrence-free intervals and being independent prognostic factors compared to other clinical parameters.
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Background: Cognitive effects of tamoxifen have been described. We augment data from a previous short-term (ST) follow-up study with long-term (LT) data to evaluate ST and LT cognitive effects of tamoxifen followed by exemestane and exemestane in breast cancer patients.

Methods: Patients from the Tamoxifen and Exemestane Adjuvant Multinational trial received 5 years exemestane (exemestane group, n = 114) or 2.

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Introduction: Although optimising rectal cancer treatment has reduced local recurrence rates, many patients develop distant metastases (DM). The current study investigated whether a total neoadjuvant treatment strategy influences the development, location, and timing of metastases in patients diagnosed with high-risk locally advanced rectal cancer included in the Rectal cancer And Pre-operative Induction therapy followed by Dedicated Operation (RAPIDO) trial.

Material And Methods: Patients were randomly assigned to short-course radiotherapy followed by 18 weeks of CAPOX or FOLFOX4 before surgery (EXP), or long-course chemoradiotherapy with optional postoperative chemotherapy (SC-G).

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Article Synopsis
  • In rectal cancer treatment, there’s a debate over how to manage patients with near-complete clinical response (near-cCR) after neoadjuvant therapy, as some achieve complete clinical response (cCR) later on.
  • This study analyzed data from the International Watch & Wait Database to compare outcomes between patients who had cCR at their first reassessment versus those who achieved it later.
  • Results showed that oncological outcomes, like organ preservation and survival rates, were similar for both groups, indicating that delaying the response assessment does not negatively impact patient outcomes.
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Objective: To analyze risk and patterns of locoregional failure (LRF) in patients of the RAPIDO trial at 5 years.

Background: Multimodality treatment improves local control in rectal cancer. Total neoadjuvant treatment (TNT) aims to improve systemic control while local control is maintained.

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Background: Nearly 30% of patients with rectal cancer develop local regrowth after initial clinical complete response managed by watch and wait. These patients might be at higher risk for distant metastases.

Objective: This study aimed to investigate risk factors for distant metastases using time-dependent analyses.

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Purpose: The European Organisation for Research and Treatment of Cancer 10981-22023 AMAROS trial evaluated axillary lymph node dissection (ALND) versus axillary radiotherapy (ART) in patients with cT1-2, node-negative breast cancer and a positive sentinel node (SN) biopsy. At 5 years, both modalities showed excellent and comparable axillary control, with significantly less morbidity after ART. We now report the preplanned 10-year analysis of the axillary recurrence rate (ARR), overall survival (OS), and disease-free survival (DFS), and an updated 5-year analysis of morbidity and quality of life.

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Background: Survival for rectal cancer patients has improved over the past decades. In parallel, long-term health-related quality of life (HRQoL) is gaining interest. This study focuses on the effect of complications following rectal cancer surgery on HRQoL and survival.

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  • The study investigates differences in cancer characteristics and survival rates between males and females in gastric cancer, particularly focusing on microsatellite instability (MSI) status.
  • Analysis of 1,307 tumors revealed that males with MSI-high gastric cancer had significantly poorer overall survival rates compared to females, highlighting a disparity in treatment outcomes based on sex.
  • The findings suggest that the favorable prognostic implications of MSI are predominantly seen in females, indicating the importance of considering sex differences in cancer prognosis and treatment strategies.
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Aim: Currently, compelling evidence illustrates the significance of determining microsatellite instability (MSI) in colorectal cancer (CRC). The association of MSI with proximal CRC is well established, however, its implications in patients with rectal cancer remain undefined. We therefore aimed to determine the role of MSI with respect to incidence and outcome in patients with rectal cancer.

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  • Perioperative chemotherapy is the standard treatment for resectable gastric cancer, with oxaliplatin gaining preference over cisplatin, though evidence for its superiority is lacking.
  • The CRITICS trial compared outcomes between patients using cisplatin (632) and oxaliplatin (149) and examined their effects on patient health and tumor response.
  • While both drugs led to severe toxicity rates (67% for cisplatin vs. 60% for oxaliplatin), the overall survival and tumor response outcomes showed no significant differences, indicating both are viable treatment options.
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