175 results match your criteria: "Antoni van Leeuwenhoek-Netherlands Cancer Institute[Affiliation]"

Immunotherapy for cancer treatment during pregnancy.

Lancet Oncol

December 2021

Department of Surgical Oncology, Antoni van Leeuwenhoek-Netherlands Cancer Institute, Amsterdam, Netherlands; Department of Oncology, KU Leuven, Leuven, Belgium. Electronic address:

Immunotherapy has greatly improved outcomes for subgroups of patients with cancer. As indications keep expanding, there is an unmet need to gain a better understanding of the effect of these therapies on pregnancy and fertility. During pregnancy, substantial adaptations occur in the maternal immune system to maintain protection against pathogens while avoiding detrimental reactions to the semi-allogeneic fetus.

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The peritoneum is a common metastatic site in gastric cancer. This systematic review provides an overview of the incidence, risk factors and survival of synchronous peritoneal metastases from gastric cancer. A systematic search was performed to identify studies wherein the incidence, risk factors and survival of gastric cancer with peritoneal metastases were investigated.

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Aims: Gleason pattern 4 (GP4) percentage, invasive cribriform and/or intraductal carcinoma (IC/IDC) and the presence of tertiary Gleason pattern 5 (TP5) in radical prostatectomy (RP) specimens all aid in the risk stratification of Grade Group (GG) 2 prostate cancer patients. However, it is unclear to what extent these pathological features are mutually related and what are their individual values if they are investigated simultaneously. The aims of this study were: (i) to determine the mutual relationships of the GP4 percentage, IC/IDC and TP5 in GG2 RP specimens; and (ii) to assess their prognostic value for biochemical recurrence-free survival (BCRFS).

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Endometrial carcinomas (EC) are the sixth most common cancer in women worldwide and the most prevalent in the developed world. ECs have been historically sub-classified in two major groups, type I and type II, based primarily on histopathological characteristics. Notwithstanding the usefulness of such classification in the clinics, until now it failed to adequately stratify patients preoperatively into low- or high-risk groups.

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New treatment developments in ovarian cancer have led to a renewed interest in staging advanced ovarian cancer. The treatment of females with ovarian cancer patients has a strong multidisciplinary character with an essential role for the radiologist. This review aims to provide an overview of the current position of CT, positron emission tomography-CT, and MRI in ovarian cancer and how imaging can be used to guide multidisciplinary team discussions.

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Background: Premenopausal women with early hormone-receptor positive (HR+) breast cancer receive 5-10 years of adjuvant endocrine therapy (ET) during which pregnancy is contraindicated and fertility may wane. The POSITIVE study investigates the impact of temporary ET interruption to allow pregnancy.

Methods: POSITIVE enrolled women with stage I-III HR + early breast cancer, ≤42 years, who had received 18-30 months of adjuvant ET and wished to interrupt ET for pregnancy.

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Triple-Negative Breast Cancer (TNBC) is the most aggressive breast cancer subtype, characterized by limited treatment options and higher relapse rates than hormone-receptor-positive breast cancers. Chemotherapy remains the mainstay treatment for TNBC, and platinum salts have been explored as a therapeutic alternative in neo-adjuvant and metastatic settings. However, primary and acquired resistance to chemotherapy in general and platinum-based regimens specifically strongly hampers TNBC management.

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Objectives/hypothesis: To further improve the quality of head and neck cancer (HNC) care, we developed a composite measure defined as "textbook outcome" (TO).

Methods: We analyzed a retrospective cohort of patients after curvative-intent primary surgery, radiotherapy (RT), or chemoradiation (CRT) for HNC between 2015 and 2018 at the Netherlands Cancer Institute. TO was defined as 1) the start of treatment within 30 days, 2a) satisfactory pathologic outcomes, without 30-day postoperative complications, for the surgically treated group, and 2b), for RT and CRT patients, no unexpected or prolonged hospitalization and toxicity after the completion of treatment as planned.

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Immune checkpoint inhibitor treatment and atherosclerotic cardiovascular disease: an emerging clinical problem.

J Immunother Cancer

June 2021

Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, Netherlands

Antibody-mediated blockade of co-inhibitory molecules such as cytotoxic T lymphocyte-associated protein 4, PD1 and PDL1 elicits potent antitumor responses and improves the prognosis of many patients with cancer. As these immune checkpoint inhibitors (ICIs) are increasingly prescribed to a diverse patient population, a broad range of adverse effects is emerging. Atherosclerosis, a lipid-driven chronic inflammatory disease of the large arteries, may be aggravated by ICI treatment.

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Background: We developed a jejunal and colonic experimental human ischemia-reperfusion (IR) model to study pathophysiological intestinal IR mechanisms and potential new intestinal ischemia biomarkers. Our objective was to evaluate the safety of these IR models by comparing patients undergoing surgery with and without in vivo intestinal IR.

Methods: A retrospective study was performed comparing complication rates and severity, based on the Clavien-Dindo classification system, in patients undergoing pancreatoduodenectomy with (n = 10) and without (n = 20 matched controls) jejunal IR or colorectal surgery with (n = 10) and without (n = 20 matched controls) colon IR.

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Optimization of the clofazimine structure leads to a highly water-soluble C3-aminopyridinyl riminophenazine endowed with improved anti-Wnt and anti-cancer activity in vitro and in vivo.

Eur J Med Chem

October 2021

Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, 1206, Geneva, Switzerland; School of Biomedicine, Far Eastern Federal University, 690922, Vladivostok, Russia. Electronic address:

Triple-negative breast cancer (TNBC) is a cancer subtype critically dependent upon excessive activation of Wnt pathway. The anti-mycobacterial drug clofazimine is an efficient inhibitor of canonical Wnt signaling in TNBC, reducing tumor cell proliferation in vitro and in animal models. These properties make clofazimine a candidate to become first targeted therapy against TNBC.

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Article Synopsis
  • Chemotherapy during the first trimester of pregnancy is risky due to the potential for congenital malformations, but the safe timing for starting treatment is not well-defined.* -
  • This study analyzed data from 755 pregnant women receiving chemotherapy from 1977 to 2019, focusing on the rates of major and minor congenital malformations in their children.* -
  • The findings revealed a significant increase in major congenital malformations (21.7%) when chemotherapy was given before 12 weeks of gestation, compared to a lower rate (3.0%) when treatment began after 12 weeks, aligning more closely with general population rates.*
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Aims: Individualized information about the risk of incontinence after prostatectomy could help patients in shared decision-making.

Methods: We compared a historical control cohort (n = 254; between June 2016 and 2017) that received standardized information about the risk of incontinence after robot-assisted radical prostatectomy (RARP) with a prospective patient cohort (n = 254; between June 2017 and May 2018) that received individualized information of the chance of recovery of incontinence within 6 months postoperatively based on the continence prediction tool (CPRED). We measured switch in treatment choice, health-related quality of life (QoL) in both cohorts and the accuracy of the CPRED tool.

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AUTHOR REPLY.

Urology

May 2021

Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Department of Oncology, KU Leuven, Leuven, Belgium; Department of Gynecological Oncology, Amsterdam University Medical Centers, Amsterdam, the Netherlands; Department of Gynecology, Antoni van Leeuwenhoek - Netherlands Cancer Institute, Amsterdam, the Netherlands.

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The onset of immune checkpoint blockade (ICB) therapy over the last decade has transformed the therapeutic landscape in oncology. ICB has shown unprecedented clinical activity and durable responses in a variety of difficult-to-treat cancers. However, despite these promising long-term responses, a majority of patients fail to respond to single-agent therapy, demonstrating primary or acquired resistance.

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Clinicopathological features and treatment outcome of oesophageal gastrointestinal stromal tumour (GIST): A large, retrospective multicenter European study.

Eur J Surg Oncol

August 2021

Department of Surgical Oncology, Antoni van Leeuwenhoek - Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Surgical Oncology, Leiden University Medical Center, Leiden, The Netherlands; European School of Soft Tissue Sarcoma Surgery, Amsterdam, the Netherlands.

Background: Oesophageal gastrointestinal stromal tumours (GISTs) account for ≤1% of all GISTs. Consequently, evidence to guide clinical decision-making is limited.

Methods: Clinicopathological features and outcomes in patients with primary oesophageal GIST from seven European countries were collected retrospectively.

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Over the past decades, prognosis of patients with cancer has strongly improved and the number of cancer survivors is rapidly growing. Despite this success, cancer treatment is associated with development of serious cardiovascular diseases including left ventricular (LV) systolic dysfunction, heart failure, valvular disease, myocardial infarction, arrhythmias or pericardial diseases. Serial non-invasive cardiac imaging is an important tool to detect early signs of cardiotoxicity, to allow for timely intervention and provide optimal circumstances for long-term prognosis.

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Peroperative scoring systems for predicting the outcome of cytoreductive surgery in advanced-stage ovarian cancer - A systematic review.

Eur J Surg Oncol

August 2021

Center of Gynecological Oncology Amsterdam, Department of Gynecology, Antoni van Leeuwenhoek- Netherlands Cancer Institute, PO Box 900203, 1006, BE, Amsterdam, the Netherlands. Electronic address:

The extent of peritoneal metastases (PM) largely determines the possibility of complete or optimal cytoreductive surgery in advanced ovarian cancer. An objective scoring system to quantify the extent of PM can help clinicians to decide whether or not to embark on CRS. Therefore several scoring systems have been developed by different research teams and this review summarizes their performance in predicting a complete or optimal cytoreduction in patients with advanced ovarian cancer.

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Data on the use of Granulocyte colony-stimulating factor (G-CSF) in pregnant cancer patients are scarce. The International Network of Cancer, Infertility and Pregnancy (INCIP) reviewed data of pregnant patients treated with chemotherapy and G-CSF, and their offspring. Among 2083 registered patients, 42 pregnant patients received G-CSF for the following indications: recent chemotherapy induced febrile neutropenia (5; 12%), dose dense chemotherapy (28, 67%), poly chemotherapy (7, 17%), or prevention of neutropenia at delivery (2; 5%).

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Multiple versus solitary giant cell lesions of the jaw: Similar or distinct entities?

Bone

August 2021

Department of Pediatrics / Oncology, Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Amsterdam, the Netherlands.

The majority of giant cell lesions of the jaw present as a solitary focus of disease in bones of the maxillofacial skeleton. Less frequently they occur as multifocal lesions. This raises the clinical dilemma if these should be considered distinct entities and therefore each need a specific therapeutic approach.

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In urogenital cancers, urine as a liquid biopsy for non-invasive cancer detection holds great promise for future clinical application. Their anatomical position allows for the local shedding of tumor DNA, but recent data indicate that tumor DNA in urine might also result from transrenal excretion. This study aims to assess the origin of tumor-associated DNA in the urine of 5 bladder and 25 cervical cancer patients.

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Article Synopsis
  • Triple-negative breast cancer (TNBC) is highly aggressive, often responds initially to carboplatin chemotherapy, but often develops resistance, creating a need for new treatment strategies.
  • Researchers created carboplatin-resistant TNBC models and found that resistance is linked to changes in metabolism and a strong anti-oxidative response, allowing the cells to thrive despite DNA damage from the drug.
  • Inhibition of the mitotic checkpoint regulator CHEK1 makes carboplatin-resistant TNBC more susceptible to carboplatin, with pharmacological tests showing that using CHEK1 inhibitors can effectively suppress the growth of these resistant tumors in mice.
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Background: Based on reassuring short-term foetal and maternal safety data, there is an increasing trend to administer chemotherapy during the second and third trimesters of pregnancy. The pharmacokinetics (PK) of drugs might change as a result of several physiological changes that occur during pregnancy, potentially affecting the efficacy and safety of chemotherapy.

Objective: With this analysis, we aimed to quantitatively describe the changes in the PK of docetaxel, paclitaxel, doxorubicin and epirubicin in pregnant women compared with non-pregnant women.

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Primary systemic therapy is increasingly used in the treatment of patients with early-stage breast cancer, but few guidelines specifically address optimal locoregional therapies. Therefore, we established an international consortium to discuss clinical evidence and to provide expert advice on technical management of patients with early-stage breast cancer. The steering committee prepared six working packages to address all major clinical questions from diagnosis to surgery.

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Pregnancy-related cancer management represents a real challenge for both the patients and the physicians. The long-term neurodevelopmental outcome of children in utero exposed to chemotherapeutic agents has only recently been addressed. This review aims to systematically integrate and highlight all existing data from the literature regarding the effect of prenatal exposure to chemotherapy on fetal brain growth and child development.

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