15 results on '"Berkhof, J."'
Search Results
2. The effect of nutritional counseling on muscle mass and treatment outcome in patients with metastatic colorectal cancer undergoing chemotherapy: A randomized controlled trial.
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van der Werf, A., Langius, J.A.E., Beeker, A., ten Tije, A.J., Vulink, A.J., Haringhuizen, A., Berkhof, J., van der Vliet, H.J., Verheul, H.M.W., and de van der Schueren, M.A.E.
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A low muscle mass before start of treatment and loss of muscle mass during chemotherapy is related to adverse outcomes in patients with cancer. In this randomized controlled trial, the effect of nutritional counseling on change in muscle mass and treatment outcome in patients with metastatic colorectal cancer during first-line chemotherapy was studied. Patients scheduled for first-line chemotherapy (n = 107) were randomly assigned to individualized nutritional counseling by a dietitian (NC) or usual care (UC). NC was aimed at sufficient protein- and energy intake, supported by oral supplements or enteral feeding if indicated. Furthermore, physical activity was encouraged. Outcomes were assessed at baseline (T0) and the time of the first (T1) and second (T2) regular follow-up computed tomography scans. The proportion of patients with a clinically relevant decrease in skeletal muscle area of ≥6.0 cm
2 , measured by computed tomography, was the primary outcome. Secondary outcomes included body weight, quality of life, treatment toxicity and progression free and overall survival. A total of 107 patients were enrolled (mean age, 65 years (SD, 11 years), 63% male). Mean change in skeletal muscle area from T0 till T1 was −2.5 (SD, 9.5) cm2 , with no difference between NC versus UC (p = 0.891). The proportion of patients with a clinically relevant decrease in skeletal muscle area of ≥6.0 cm2 did not differ (NC 30% versus UC 31%, p = 0.467). NC compared with UC had a significant positive effect on body weight (B coefficient 1.7, p = 0.045), progression free survival (p = 0.039) and overall survival (p = 0.046). NC of patients undergoing chemotherapy for metastatic colorectal cancer had no effect on muscle mass. However, we found that NC may increase body weight and improve progression free survival and overall survival compared to UC in this group of patients. These findings need further evaluation in future clinical trials. ClinicalTrials.gov NCT01998152; Netherlands Trial Register NTR4223. [ABSTRACT FROM AUTHOR]- Published
- 2020
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3. SIOG2023-4-P-325 - Implementing the Geriatric 8 (G8) Screening Tool in One Rural Oncology Practice.
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Berkhof, J., Kiss, E., Hurley, D., Cacciatore, J., Zittel, J., and Mohile, S.
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- 2023
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4. Clinical validation of the PapilloCheck assay according to international guidelines for HPV test requirements for cervical screening
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Hesselink, A, Heideman, D, Berkhof, J, Topal, F, Agard, D, Pol, R, Meijer, C, and Snijders, P
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- 2014
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5. Human papillomavirus testing for the detection of high-grade cervical intraepithelial neoplasia and cancer: final results of the POBASCAM randomised controlled trial.
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Rijkaart DC, Berkhof J, Rozendaal L, van Kemenade FJ, Bulkmans NW, Heideman DA, Kenter GG, Cuzick J, Snijders PJ, and Meijer CJ
- Abstract
BACKGROUND: Human papillomavirus (HPV) testing is more sensitive for the detection of high-grade cervical lesions than is cytology, but detection of HPV by DNA screening in two screening rounds 5 years apart has not been assessed. The aim of this study was to assess whether HPV DNA testing in the first screen decreases detection of cervical intraepithelial neoplasia (CIN) grade 3 or worse, CIN grade 2 or worse, and cervical cancer in the second screening. METHODS: In this randomised trial, women aged 29-56 years participating in the cervical screening programme in the Netherlands were randomly assigned to receive HPV DNA (GP5+/6+-PCR method) and cytology co-testing or cytology testing alone, from January, 1999, to September, 2002. Randomisation (in a 1:1 ratio) was done with computer-generated random numbers after the cervical specimen had been taken. At the second screening 5 years later, HPV DNA and cytology co-testing was done in both groups; researchers were masked to the patient's assignment. The primary endpoint was the number of CIN grade 3 or worse detected. Analysis was done by intention to screen. The trial is now finished and is registered, number ISRCTN20781131. FINDINGS: 22420 women were randomly assigned to the intervention group and 22 518 to the control group; 19999 in the intervention group and 20106 in the control group were eligible for analysis at the first screen. At the second screen, 19579 women in the intervention group and 19731 in the control group were eligible, of whom 16750 and 16743, respectively, attended the second screen. In the second round, CIN grade 3 or worse was less common in the intervention group than in the control group (88 of 19579 in the intervention group vs 122 of 19731 in the control group; relative risk 0·73, 95% CI 0·55-0·96; p=0·023). Cervical cancer was also less common in the intervention group than in the control group (four of 19579 in the intervention group vs 14 of 19731; 0·29, 0·10-0·87; p=0·031). In the baseline round, detection of CIN grade 3 or worse did not differ significantly between groups (171 of 19999 vs 150 of 20 106; 1·15, 0·92-1·43; p=0·239) but was significantly more common in women with normal cytology (34 of 19286 vs 12 of 19 373; 2·85, 1·47-5·49; p=0·001). Furthermore, significantly more cases of CIN grade 2 or worse were detected in the intervention group than in the control group (267 of 19999 vs 215 of 20 106; 1·25, 1·05-1·50; p=0·015). In the second screen, fewer HPV16-positive CIN grade 3 or worse were detected in the intervention group than in the control group (17 of 9481 vs 35 of 9354; 0·48, 0·27-0·85; p=0·012); detection of non-HPV16-positive CIN grade 3 or worse did not differ between groups (25 of 9481 vs 25 of 9354; 0·99, 0·57-1·72; p=1·00). The cumulative detection of CIN grade 3 or worse and CIN grade 2 or worse did not differ significantly between study arms, neither for the whole study group (CIN grade 3 or worse: 259 of 19999 vs 272 of 20106; 0·96, 0·81-1·14, p=0·631; CIN grade 2 or worse: 427 of 19999 vs 399 of 20106; 1·08, 0·94-1·24; p=0·292), nor for subgroups of women invited for the first time (CIN grade 3 or worse in women aged 29-33 years: 102 of 3139 vs 105 of 3128; 0·97, 0·74-1·27; CIN grade 2 or worse in women aged 29-33 years: 153 of 3139 vs 151 of 3128; 1·01, 0·81-1·26; CIN grade 3 or worse in women aged 34-56 years: 157 of 16860 vs 167 of 16978; 0·95, 0·76-1·18; CIN grade 2 or worse in women aged 34-56 years: 274 of 16860 vs 248 of 16978; 1·11, 0·94-1·32). INTERPRETATION: Implementation of HPV DNA testing in cervical screening leads to earlier detection of clinically relevant CIN grade 2 or worse, which when adequately treated, improves protection against CIN grade 3 or worse and cervical cancer. Early detection of high-grade cervical legions caused by HPV16 was a major component of this benefit. Our results lend support to the use of HPV DNA testing for all women aged 29 years and older. FUNDING: Zorg Onderzoek Nederland (Netherlands Organisation for Health Research and Development). [ABSTRACT FROM AUTHOR]
- Published
- 2012
6. Nosocomial infections in a Dutch neonatal intensive care unit: surveillance study with definitions for infection specifically adapted for neonates.
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van der Zwet, W.C., Kaiser, A.M., van Elburg, R.M., Berkhof, J., Fetter, W.P.F., Parlevliet, G.A., and Vandenbroucke-Grauls, C.M.J.E.
- Abstract
Summary: The incidence of nosocomial infection in neonatal intensive care units (NICUs) is high compared with other wards. However, no definitions for hospital-acquired infection are available for NICUs. The aim of this study was to measure the incidence of such infections and to identify risk factors in the NICU of the VU University Medical Center, which serves as a level III regional NICU. For this purpose, a prospective surveillance was performed in 1998–2000. We designed definitions by adjusting the current definitions of the Centers for Disease Control and Prevention (CDC) for children <1 year of age. Birth weight was stratified into four categories and other baseline risk factors were dichotomized. Analysis of risk factors was performed by Cox regression with time-dependent variables. The relationship between the Clinical Risk Index for Babies (CRIB) and nosocomial infection was investigated. Furthermore, for a random sample of cases, we determined whether bloodstream infection and pneumonia would also have been identified with the CDC definitions. Seven hundred and forty-two neonates were included in the study. One hundred and ninety-one neonates developed 264 infections. Bloodstream infection (N=138, 14.9/1000 patient-days) and pneumonia (N=69, 7.5/1000 patient-days) were the most common infections. Of bloodstream infections, 59% were caused by coagulase-negative staphylococci; in 21% of neonates, blood cultures remained negative. In 25% of pneumonias, Enterobacteriaceae were the causative micro-organisms; 26% of cultures remained negative. Compared with the Nosocomial Infections Surveillance System (NNIS) of the CDC, our device utilization ratios and device-associated nosocomial infection rates were high. The main risk factors for bloodstream infection were birth weight [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.45–2.17] and parenteral feeding with hospital-pharmacy-produced, all-in-one mixture ‘Minimix’ (HR 3.69, 95%CI 2.03–6.69); administration of intravenous antibiotics (HR 0.39, 95%CI 0.26–0.56) was a protective risk factor. The main risk factors for pneumonia were low birth weight (HR 1.37, 95%CI 1.01–1.85) and mechanical ventilation (HR 9.69, 95%CI 4.60–20.4); intravenous antibiotics were protective (HR 0.37, 95%CI 0.21–0.64). In a subcohort of 232 very-low-birthweight neonates, the CRIB was not predictive for infection. With the CDC criteria, only 75% (21/28) of bloodstream infections and 87.5% of pneumonias (21/24) would have been identified. In conclusion, our local nosocomial infection rates are high compared with those of NICUs participating in the NNIS. This can be partially explained by: (1) the use of our definitions for nosocomial infection, which are more suitable for this patient category; and (2) the high device utilization ratios. [Copyright &y& Elsevier]
- Published
- 2005
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7. Assessment of herd immunity from human papillomavirus vaccination.
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Bogaards JA and Berkhof J
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- 2011
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8. 383 Surveillance of women at risk for breast cancer: who detects breast cancer?
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Fabry, H., Van Der Sijp, J., Groot, I., Hermsen, B., Berkhof, J., Verheijen, R., Van Leeuwen, P., and Meijer, s.
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- 2003
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9. Clinical validation of Anyplex™ II HPV HR Detection according to the guidelines for HPV test requirements for cervical cancer screening.
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Hesselink, A.T., Sahli, R., Berkhof, J., Snijders, P.J.F., van der Salm, M.L., Agard, D., Bleeker, M.C.G., and Heideman, D.A.M.
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CERVICAL cancer diagnosis , *HUMAN papillomavirus vaccines , *POLYMERASE chain reaction , *CERVICAL intraepithelial neoplasia , *MEDICAL screening , *GENOTYPES , *DIAGNOSIS - Abstract
Background Anyplex™ II HPV HR Detection (Seegene, Seoul, Korea) is a multiplex real-time PCR using tagging oligonucleotide cleavage and extension (TOCE) technology for simultaneous detection and genotyping of 14 high-risk (HR) HPV types, including HPV16 and HPV18. Objectives To evaluate whether the clinical performance and reproducibility of Anyplex™ II HPV HR Detection meet the international consensus guidelines for HPV test requirements for cervical cancer screening [1]. Study design The clinical performance of Anyplex™ II HPV HR Detection for detecting cervical intraepithelial neoplasia grade 2 or worse (CIN2+) was determined relative to that of the reference assay, i.e., HR HPV GP5+/6+-PCR-EIA, by analysis of a total of 879 cervical liquid based cytology (LBC) specimens from a screening population, of which 60 were from women with CIN2+. The intra-laboratory reproducibility and inter-laboratory agreement were determined on 509 LBC samples, of which 172 were positive by the reference assay. Results Anyplex™ II HPV HR Detection showed a clinical sensitivity for CIN2+ of 98.3% (59/60; 95% CI: 89.1–99.8) and a clinical specificity for CIN2+ of 93.6% (764/816; 95% CI: 89.8–96.1). The clinical sensitivity and specificity were non-inferior to those of HR HPV GP5+/6+-PCR-EIA (non-inferiority score test: P = 0.005 and P = 0.023, respectively). Both intra-laboratory reproducibility (96.8%; 95% CI: 95.3–98.1; kappa value of 0.93) and inter-laboratory agreement (96.0%; 95% CI: 94.3–97.4; kappa value of 0.91) were high. Conclusions Anyplex™ II HPV HR Detection performs clinically non-inferior to HR HPV GP5+/6+-PCR-EIA. Anyplex™ II HPV HR Detection complies with international consensus validation metrics for HPV DNA tests for cervical cancer screening [1]. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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10. 1559P Towards more efficient multi-arm exercise trials in oncology: Application of a Bayesian adaptive decision-theoretic approach.
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Buffart, L.M., Bassi, A., Stuiver, M., Aaronson, N., Sonke, G.S., Berkhof, J., and van de Ven, P.
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ONCOLOGY - Published
- 2022
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11. Which high-risk HPV assays fulfil criteria for use in primary cervical cancer screening?
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Arbyn, M., Snijders, P.J.F., Meijer, C.J.L.M., Berkhof, J., Cuschieri, K., Kocjan, B.J., and Poljak, M.
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PAPILLOMAVIRUS disease diagnosis , *PAPILLOMAVIRUSES , *CERVICAL cancer diagnosis , *CERVICAL intraepithelial neoplasia , *ENZYME-linked immunosorbent assay , *DISEASE risk factors - Abstract
Several countries are in the process of switching to high-risk human papillomavirus (hrHPV) testing for cervical cancer screening. Given the multitude of available tests, validated assays which assure high-quality screening need to be identified. A systematic review was conducted to answer the question which hrHPV tests fulfil the criteria defined by an international expert team in 2009, based on reproducibility and relative sensitivity and specificity compared to Hybrid Capture-2 or GP5+/6+ PCR–enzyme immunoassay. These latter two hrHPV DNA assays were validated in large randomized trials and cohorts with a follow-up duration of 8 years or more. Eligible studies citing the 2009 guideline were retrieved from Scopus ( http://www.scopus.com ) and from a meta-analysis assessing the relative accuracy of new hrHPV assays versus the standard comparator tests to detect high-grade cervical intraepithelial neoplasia or cancer in primary screening. The cobas 4800 HPV test and Abbott RealTime High Risk HPV test were consistently validated in two and three studies, respectively, whereas the PapilloCheck HPV-screening test, BD Onclarity HPV assay and the HPV-Risk assay were validated each in one study. Other tests which partially fulfil the 2009 guidelines are the following: Cervista HPV HR Test, GP5+/6+ PCR-LMNX, an in-house E6/E7 RT quantitative PCR and MALDI-TOF (matrix-assisted laser desorption-ionization time-of-flight). The APTIMA HPV assay targeting E6/E7 mRNA of hrHPV was also fully validated. However, the cross-sectional equivalency criteria of the 2009 guidelines were set up for HPV DNA assays. Demonstration of a low risk of CIN3+ after a negative APTIMA test over a longer period is awaited to inform us about its utility in cervical cancer screening at 5-year or longer intervals. [ABSTRACT FROM AUTHOR]
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- 2015
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12. Long-Term Impact of the Dutch Colorectal Cancer Screening Programme on Cancer Incidence: Exploration of the Serrated Pathway.
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Greuter, M.J., Lew, J.B., Berkhof, J., Canfell, K., Dekker, E., Meijer, G.A., and Coupe, V.M.
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COLON cancer diagnosis , *COLON cancer treatment , *COLONOSCOPY , *DISEASE incidence , *MEDICAL screening , *DUTCH people , *DISEASES - Published
- 2014
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13. The Potential of (TARGETED) MR Colonography as a Screening Tool for Colorectal Cancer: A Cost-Effectiveness Analysis.
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Greuter, M.J., Demirel, E., Berkhof, J., Fijneman, R.J., Stoker, J., Meijer, G.A., and Coupé, V.M.
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COLON cancer diagnosis , *COLON cancer treatment , *EARLY detection of cancer , *MAGNETIC resonance microscopy , *COST effectiveness - Published
- 2014
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14. Cervical cancer screening: on the way to a shift from cytology to full molecular screening.
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Dijkstra, M. G., Snijders, P. J. F., Arbyn, M., Rijkaart, D. C., Berkhof, J., and Meijer, C. J. L. M.
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CERVICAL cancer diagnosis , *MOLECULAR diagnosis , *ADENOCARCINOMA , *PAPILLOMAVIRUSES , *CYTOLOGY , *COMPARATIVE studies - Abstract
Cytology-based screening has led to a reduction of the incidence of cervical cancer. However, the sensitivity for detection of CIN2/3+ is limited, therefore repeated testing is necessary. Additionally, adenocarcinomas are often missed. All the evidence collected so far, suggest that the time has come for implementation of hrHPV testing; it detects 30% more CIN2+, and 20% more CIN3+ in women over 30 years compared to cytology. In this review, the arguments in favor of, and concerns on aspects of implementation of hrHPV testing will be discussed.Cytology-based nation-wide cervical screening has led to a substantial reduction of the incidence of cervical cancer in western countries. However, the sensitivity of cytology for the detection of high-grade precursor lesions or cervical cancer is limited; therefore, repeated testing is necessary to achieve program effectiveness. Additionally, adenocarcinomas and its precursors are often missed by cytology. Consequently, there is a need for a better screening test. The insight that infection with high-risk human papillomavirus (hrHPV) is the causal agent of cervical cancer and its precursors has led to the development of molecular tests for the detection of hrHPV. Strong evidence now supports the use of hrHPV testing in the prevention of cervical cancer. In this review, we will discuss the arguments in favor of, and concerns on aspects of implementation of hrHPV testing in primary cervical cancer screening, such as the age to start hrHPV-based screening, ways to increase screening attendance, requirements for candidate hrHPV tests to be used, and triage algorithms for screen-positive women. [ABSTRACT FROM PUBLISHER]
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- 2014
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15. FAM19A4/miR124-2 methylation analysis as a triage test for HPV-positive women: cross-sectional and longitudinal data from a Dutch screening cohort.
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Vink, F.J., Lissenberg-Witte, B.I., Meijer, C.J.L.M., Berkhof, J., van Kemenade, F.J., Siebers, A.G., Steenbergen, R.D.M., Bleeker, M.C.G., and Heideman, D.A.M.
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MEDICAL triage , *CERVICAL intraepithelial neoplasia , *METHYLATION , *CALCIFICATIONS of the breast , *CERVICAL cancer - Abstract
The aim was to evaluate the cross-sectional and long-term triage performance of FAM19A4/miR124-2 methylation analysis in human papillomavirus (HPV)-based cervical screening. We conducted a post hoc analysis within a Dutch population-based HPV-positive study cohort of women aged 30–60 years (n = 979). Cross-sectional cervical intraepithelial neoplasia (CIN) 3+ sensitivity, specificity, positive predictive value and negative predictive value as well as cumulative CIN3+ or cervical cancer risks after 9 and 14 years were compared for three baseline triage strategies: (1) cytology, (2) FAM19A4/miR124-2 methylation analysis and (3) combined FAM19A4/miR124-2 methylation with cytology. CIN3+ sensitivity of FAM19A4/miR124-2 methylation analysis was similar to that of cytology (71.3% vs 76.0%, ratio 0.94, 95% CI 0.84 to 1.05), at a lower specificity (78.3% vs 87.0%, ratio 0.90, 95% CI 0.86 to 0.94). Combining FAM19A4/miR124-2 methylation analysis with cytology resulted in a CIN3+ sensitivity of 84.6% (95% CI 78.3 to 90.8) at a specificity of 69.6% (95% CI 66.5 to 72.7). Similar 9- and 14-year CIN3+ risks for baseline cytology-negative women and baseline FAM19A4/miR124-2 methylation-negative women were observed, with risk differences of –0.42% (95% CI –2.1 to 1.4) and –0.07% (95% CI –1.9 to 1.9), respectively. The 14-year cumulative cervical cancer incidence was significantly lower for methylation-negative women compared to cytology-negative women (risk difference 0.98%, 95% CI 0.26 to 2.0). FAM19A4/miR124-2 methylation analysis has a good triage performance on baseline screening samples, with a cross-sectional CIN3+ sensitivity and long-term triage-negative CIN3+ risk equalling cytology triage. Therefore, FAM19A4/miR124-2 methylation analysis appears to be a good and objective alternative to cytology in triage scenarios in HPV-based cervical screening. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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