11 results on '"Helmerhorst TJM"'
Search Results
2. Association between dense CADM1 promoter methylation and reduced protein expression in high‐grade CIN and cervical SCC
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Overmeer, RM, primary, Henken, FE, additional, Snijders, PJF, additional, Claassen‐Kramer, D, additional, Berkhof, J, additional, Helmerhorst, TJM, additional, Heideman, DAM, additional, Wilting, SM, additional, Murakami, Y, additional, Ito, A, additional, Meijer, CJLM, additional, and Steenbergen, RDM, additional
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- 2008
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3. Vaccination against HPV: indications for women and the impact on the cervical screening programme
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Heideman, DAM, primary, Snijders, PJF, additional, Berkhof, J, additional, Verheijen, RHM, additional, Helmerhorst, TJM, additional, and Meijer, CJLM, additional
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- 2008
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4. The impact of human papillomavirus genotype on colposcopic appearance: a cross-sectional analysis.
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Marel, J, Baars, R, Quint, WGV, Berkhof, J, Pino, M, Torné, A, Ordi, J, Wentzensen, N, Schiffman, M, Sandt, MM, Lindeman, J, Jenkins, D, Helmerhorst, TJM, Verheijen, RHM, Harmsel, B, and Alonso, I
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PAPILLOMAVIRUSES ,PERFORMANCE anxiety ,ONCOLOGY ,CARCINOGENS ,COLPOSCOPY - Abstract
Objective To study colposcopic performance in diagnosing high-grade cervical intraepithelial neoplasia or cervical cancer ( CIN2+ and CIN3+) using colposcopic characteristics and high-risk human papillomavirus (hr HPV) genotyping. Design Cross-sectional multicentre study. Setting Two colposcopy clinics in The Netherlands and Spain. Population Six hundred and ten women aged 17 years and older referred for colposcopy because of abnormal cytology. Methods A cervical smear was obtained. Colposcopists identified the worst lesion, graded their impression and scored the colposcopic characteristics of the lesions. Up to four biopsies were collected, including one biopsy from visually normal tissue. Main outcome measures CIN2+ and CIN3+, positive for HPV16 or other high-risk HPV types (non-16 hr HPV-positive). Results The mean age in HPV16-positive CIN2+ women was 35.1 years compared with 39.1 years in women with other hr HPV types ( P = 0.002). Sensitivity for colposcopy to detect CIN2+ was 87.9% (95% CI 83.2-91.5), using colposcopic cut-off of 'any abnormality'. The remaining CIN2+ were found by a biopsy from visually normal tissue or endocervical curettage ( ECC). Detection of CIN2+ by lesion-targeted biopsies was not different between HPV16-positive women [119/135; 88.1% (95% CI 81.2-92.9)] and non-16 hr HPV-positive women [100/115; 87.0% (95% CI 79.1-92.3); P = 0.776]. In multivariate analysis, 'acetowhitening' [odds ratio ( OR) 1.91, 95% CI 1.56-3.17], 'time of appearance' ( OR 1.95, 95% CI 1.21-3.15) and 'lesion >25% of visible cervix' ( OR 2.25, 95% CI 1.44-3.51) were associated with CIN2+. Conclusions In this population following European screening practice, HPV16-related CIN2+ lesions were detected at younger age and showed similar colposcopic impression as non-16 hr HPV high-grade lesions. There was no relationship between any of the colposcopic characteristics and HPV16 status. [ABSTRACT FROM AUTHOR]
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- 2014
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5. A retrospective study of 95 women with a clinical diagnosis of genital lichen planus.
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Santegoets LAM, Helmerhorst TJM, and van der Meijden WI
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- 2010
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6. Cytological regression and clearance of high-risk human papillomavarius in women with an abnormal cervical smear.
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Nobbenhuis MAE, Helmerhorst TJM, van den Brule AJC, Rozendaal L, Voorhorst FJ, Bezemer PD, Verheijen RHM, and Meijer CJL
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- 2001
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7. Relation of human papillomavirus status to cervical lesions and consequences for cervical-cancer screening: a prospective study.
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Nobbenhuis MAE, Walboomers JMM, Helmerhorst TJM, Rozendaal L, Remmink AJ, Risse EKJ, van der Linden HC, Voorhorst FJ, Kenemans P, Meijer CJL, Nobbenhuis, M A, Walboomers, J M, Helmerhorst, T J, Rozendaal, L, Remmink, A J, Risse, E K, van der Linden, H C, Voorhorst, F J, Kenemans, P, and Meijer, C J
- Abstract
Background: A relation has been established between infection with high-risk types of human papillomavirus and development of cervical cancer. We investigated a role for testing for human papillomavirus as part of cervical-cancer screening.Methods: We monitored by cytology, colposcopy, and testing for high-risk human papillomavirus 353 women referred to gynaecologists with mild to moderate and severe dyskaryosis. The median follow-up time was 33 months. At the last visit we took biopsy samples. Our primary endpoint was clinical progression, defined as cervical intraepithelial neoplasia (CIN) 3, covering three or more cervical quadrants on colposcopy, or a cervical-smear result of suspected cervical cancer.Findings: 33 women reached clinical progression. All had persistent infection with high-risk human papillomavirus. The cumulative 6-year incidence of clinical progression among these women was 40% (95% CI 21-59). In women with end histology CIN 3, 98 (95%) of 103 had persistent infection with high-risk human papillomavirus from baseline. Among women with mild to moderate dyskaryosis at baseline, a second test for human papillomavirus at 6 months predicted end histology CIN 3 better than a second cervical smear.Interpretation: Persistent infection with high-risk human papillomavirus is necessary for development and maintenance of CIN 3. All women with severe dyskaryosis should be referred to gynaecologists, whereas women with mild to moderate dyskaryosis should be referred only after a second positive test for high-risk human papillomavirus at 6 months. [ABSTRACT FROM AUTHOR]- Published
- 1999
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8. Quality of life assumptions determine which cervical cancer screening strategies are cost-effective.
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de Kok IMCM, Korfage IJ, van den Hout WB, Helmerhorst TJM, Habbema JDF, Essink-Bot ML, and van Ballegooijen M
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- Cost-Benefit Analysis, Early Detection of Cancer, Female, Humans, Models, Theoretical, Netherlands epidemiology, Surveys and Questionnaires, Mass Screening economics, Mass Screening methods, Quality of Life, Uterine Cervical Neoplasms epidemiology
- Abstract
Quality-adjusted life years are used in cost-effectiveness analyses (CEAs). To calculate QALYs, a "utility" (0-1) is used for each health state induced or prevented by the intervention. We aimed to estimate the impact of quality of life (QoL) assumptions (utilities and durations of health states) on CEAs of cervical cancer screening. To do so, 12 alternative sets of utility assumptions were retrieved from published cervical cancer screening CEAs. Two additional sets were based on empirical QoL data that were integrally obtained through two different measures (SF-6D and EQ-5D) from eight groups of women (total n = 3,087), from invitation for screening to diagnosis with cervical cancer. Per utility set we calculated the number of quality-adjusted days lost (QADL) for each relevant health state in cervical cancer screening, by multiplying the study-specific assumed disutilities (i.e., 1-utility) with study-specific durations of the loss in QoL, resulting in 14 "QADL-sets." With microsimulation model MISCAN we calculated cost-effectiveness of 342 alternative screening programs (varying in primary screening test [Human Papillomavirus (HPV) vs. cytology], starting ages, and screening interval) for each of the 14 QADL-sets. Utilities used in CEAs appeared to differ largely. We found that ten QADL-sets from the literature resulted in HPV and two in cytology as preferred primary test. The SF-6D empirical QADL-set resulted in cytology and the EQ-5D one in HPV as preferred primary test. In conclusion, assumed utilities and health state durations determine cost-effectiveness of cervical cancer screening. Also, the measure used to empirically assess utilities can be crucial for CEA conclusions., (© 2018 UICC.)
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- 2018
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9. To vaccinate or not to vaccinate? Perspectives on HPV vaccination among girls, boys, and parents in the Netherlands: a Q-methodological study.
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Patty NJS, van Dijk HM, Wallenburg I, Bal R, Helmerhorst TJM, van Exel J, and Cramm JM
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- Adolescent, Adult, Child, Female, Humans, Immunization Programs, Male, Middle Aged, Netherlands, Qualitative Research, Attitude to Health, Papillomavirus Infections prevention & control, Papillomavirus Vaccines administration & dosage, Parents psychology, Vaccination psychology
- Abstract
Background: Despite the introduction of Human papillomavirus (HPV) vaccination in national immunization programs (NIPs), vaccination rates in most countries remain relatively low. An understanding of the reasons underlying decisions about whether to vaccinate is essential in order to promote wider spread of HPV vaccination. This is particularly important in relation to policies seeking to address shortfalls in current HPV campaigns. The aim of this study was to explore prevailing perspectives concerning HPV vaccination among girls, boys, and parents, and so to identify potential determinants of HPV vaccination decisions in these groups., Method: Perspectives were explored using Q-methodology. Forty-seven girls, 39 boys, and 107 parents in the Netherlands were asked to rank a comprehensive set of 35 statements, assembled based on the health belief model (HBM), according to their agreement with them. By-person factor analysis was used to identify common patterns in these rankings, which were interpreted as perspectives on HPV vaccination. These perspectives were further interpreted and described using data collected with interviews and open-ended questions., Results: The analysis revealed four perspectives: "prevention is better than cure," "fear of unknown side effects," "lack of information and awareness," and "my body, my choice." The first two perspectives and corresponding determinants of HPV vaccination decisions were coherent and distinct; the third and fourth perspectives were more ambiguous and, to some extent, incoherent, involving doubt and lack of awareness and information (perspective 3), and overconfidence (perspective 4)., Conclusions: Given the aim of publically funded vaccination programs to minimize the spread of HPV infection and HPV-related disease and the concerns about current uptake levels, our results indicate that focus should be placed on increasing awareness and knowledge, in particular among those in a modifiable phase.
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- 2017
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10. Risk of cervical intra-epithelial neoplasia and invasive cancer of the cervix in DES daughters.
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Verloop J, van Leeuwen FE, Helmerhorst TJM, de Kok IMCM, van Erp EJM, van Boven HH, and Rookus MA
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- Adult, Aged, Female, Humans, Middle Aged, Neoplasm Invasiveness, Papillomavirus Infections complications, Pregnancy, Prospective Studies, Risk, Abnormalities, Drug-Induced, Diethylstilbestrol adverse effects, Prenatal Exposure Delayed Effects chemically induced, Uterine Cervical Neoplasms etiology, Uterine Cervical Dysplasia etiology
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Objective: Women exposed to diethylstilbestrol in utero (DES) have an increased risk of clear cell adenocarcinoma (CCA) of the vagina and cervix, while their risk of non-CCA invasive cervical cancer is still unclear., Methods: We studied the risk of pre-cancerous (CIN) lesions and non-CCA invasive cervical cancer in a prospective cohort of 12,182 women with self-reported DES exposure followed from 2000 till 2008. We took screening behavior carefully into account. Incidence was obtained through linkage with the Netherlands Nationwide Pathology database (PALGA). General population data were also derived from PALGA., Results: The incidence of CIN1 was increased (Standardized Incidence Ratio (SIR)=2.8, 95% Confidence Interval (CI)=2.3 to 3.4), but no increased risk was observed for CIN2+ (CIN2, CIN3 or invasive cancer) compared to the screened general population (SIR=1.1, 95% CI=0.95 to1.4). Women with DES-related malformations had increased risks of both CIN1 and CIN2+ (SIR=4.1, 95%CI=3.0 to 5.3 and SIR=1.5, 95%CI=1.1 to 2.0, respectively). For CIN2+, this risk increase was largely restricted to women with malformations who were more intensively screened., Conclusions: An increased risk of CIN1 among DES daughters was observed, especially in women with DES-related malformations, probably mainly due to screening. The risk of CIN2+ (including cancer) was not increased. However, among DES daughters with DES-related malformations a true small risk increase for non-CCA cervical cancer cannot be excluded., (Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2017
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11. Performance of CADM1/MAL-methylation analysis for monitoring of women treated for high-grade CIN.
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Uijterwaal MH, van Zummeren M, Kocken M, Luttmer R, Berkhof J, Witte BI, van Baal WM, Graziosi GCM, Verheijen RHM, Helmerhorst TJM, van Dijken DKE, Spruijt JWM, van Kemenade FJ, Fransen-Daalmeijer N, Bekker-Lettink M, Heideman DAM, Snijders PJF, Steenbergen RDM, and Meijer CJLM
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- Adult, Cell Adhesion Molecule-1, Female, Humans, Middle Aged, Prospective Studies, Cell Adhesion Molecules genetics, DNA Methylation, Immunoglobulins genetics, Myelin and Lymphocyte-Associated Proteolipid Proteins genetics, Uterine Cervical Neoplasms genetics, Uterine Cervical Dysplasia genetics
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Introduction: Recent studies have shown that CADM1/MAL-methylation testing detects high-grade CIN lesions with a high short-term progression risk for cervical cancer. Women treated for CIN2/3 are at risk of post-treatment disease, representing either persistent (incompletely treated) or incident (early onset) lesions. Here, we evaluated CADM1/MAL-methylation analysis as potential tool for detecting recurrent high-grade CIN lesions (rCIN2/3)., Methods and Materials: A multicenter prospective clinical cohort study was conducted among 364 women treated for CIN2/3. Cervical scrapes were taken prior to treatment, and six and 12months post-treatment and tested for cytology, hrHPV (plus genotype) and CADM1/MAL-methylation. When at six months either of these tests was positive, a colposcopy-directed biopsy was obtained. At 12months, all women underwent an exit-colposcopy with biopsy. In case of rCIN2/3, re-treatment was done., Results: We found 28 rCIN2 (7.7%) and 14 rCIN3 (3.8%), resulting in a total recurrence rate of 11.5%. All 14 women with rCIN3 and 15/28 (54%) with rCIN2 showed hrHPV type-persistence. Of these, 9/14 (64%) rCIN3 and 8/15 (53%) rCIN2 were CADM1/MAL-methylation positive. All incident rCIN2, characterized by hrHPV genotype-switch, were CADM1/MAL-methylation negative. All three carcinomas found after re-treatment were CADM1/MAL-methylation positive. CADM1/MAL-methylation positivity at both baseline and follow-up significantly increased the risk of ≥rCIN3 (from 0.7% to 18.4%), and ≥rCIN2 (from 8.2% to 36.8%), compared to a consistently CADM1/MAL-methylation negative result (p-value: <0.001)., Conclusion: Post-treatment monitoring by CADM1/MAL-methylation analysis identifies women with an increased risk of rCIN2/3. Our results confirm previous data indicating that CADM1/MAL-methylation analysis provides a high reassurance against cancer., (Copyright © 2016 Elsevier Inc. All rights reserved.)
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- 2016
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