8 results on '"Lanjouw, L."'
Search Results
2. Causality and functional relevance of BRCA1 and BRCA2 pathogenic variants in non‐high‐grade serous ovarian carcinomas
- Author
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Kramer, CJH, primary, Lanjouw, L, additional, Ruano, D, additional, ter Elst, A, additional, Santandrea, G, additional, Solleveld‐Westerink, N, additional, Werner, N, additional, van der Hout, AH, additional, de Kroon, CD, additional, van Wezel, T, additional, Berger, LPV, additional, Jalving, M, additional, Wesseling, J, additional, Smit, VTHBM, additional, de Bock, GH, additional, van Asperen, CJ, additional, Mourits, MJE, additional, Vreeswijk, MPG, additional, Bart, J, additional, and Bosse, T, additional
- Published
- 2023
- Full Text
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3. Causality and functional relevance of BRCA1 and BRCA2 pathogenic variants in non‐high‐grade serous ovarian carcinomas.
- Author
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Kramer, CJH, Lanjouw, L, Ruano, D, ter Elst, A, Santandrea, G, Solleveld‐Westerink, N, Werner, N, van der Hout, AH, de Kroon, CD, van Wezel, T, Berger, LPV, Jalving, M, Wesseling, J, Smit, VTHBM, de Bock, GH, van Asperen, CJ, Mourits, MJE, Vreeswijk, MPG, Bart, J, and Bosse, T
- Subjects
OVARIAN epithelial cancer ,HOMOLOGOUS recombination ,BRCA genes ,PATIENT selection ,CARCINOMA - Abstract
The identification of causal BRCA1/2 pathogenic variants (PVs) in epithelial ovarian carcinoma (EOC) aids the selection of patients for genetic counselling and treatment decision‐making. Current recommendations therefore stress sequencing of all EOCs, regardless of histotype. Although it is recognised that BRCA1/2 PVs cluster in high‐grade serous ovarian carcinomas (HGSOC), this view is largely unsubstantiated by detailed analysis. Here, we aimed to analyse the results of BRCA1/2 tumour sequencing in a centrally revised, consecutive, prospective series including all EOC histotypes. Sequencing of n = 946 EOCs revealed BRCA1/2 PVs in 125 samples (13%), only eight of which were found in non‐HGSOC histotypes. Specifically, BRCA1/2 PVs were identified in high‐grade endometrioid (3/20; 15%), low‐grade endometrioid (1/40; 2.5%), low‐grade serous (3/67; 4.5%), and clear cell (1/64; 1.6%) EOCs. No PVs were identified in any mucinous ovarian carcinomas tested. By re‐evaluation and using loss of heterozygosity and homologous recombination deficiency analyses, we then assessed: (1) whether the eight 'anomalous' cases were potentially histologically misclassified and (2) whether the identified variants were likely causal in carcinogenesis. The first 'anomalous' non‐HGSOC with a BRCA1/2 PV proved to be a misdiagnosed HGSOC. Next, germline BRCA2 variants, found in two p53‐abnormal high‐grade endometrioid tumours, showed substantial evidence supporting causality. One additional, likely causal variant, found in a p53‐wildtype low‐grade serous ovarian carcinoma, was of somatic origin. The remaining cases showed retention of the BRCA1/2 wildtype allele, suggestive of non‐causal secondary passenger variants. We conclude that likely causal BRCA1/2 variants are present in high‐grade endometrioid tumours but are absent from the other EOC histotypes tested. Although the findings require validation, these results seem to justify a transition from universal to histotype‐directed sequencing. Furthermore, in‐depth functional analysis of tumours harbouring BRCA1/2 variants combined with detailed revision of cancer histotypes can serve as a model in other BRCA1/2‐related cancers. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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4. EPV276/#532 Surgical menopause: effect of estrogen-progesterone and testosterone replacement therapy on psychological well-being and sexual functioning: a systematic literature review
- Author
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Stuursma, A, primary, Mourits, M, additional, De Bock, T, additional, Lanjouw, L, additional, and Idema, D, additional
- Published
- 2021
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5. Geen kunstgenot zonder kennis van de taal van kunstenaars
- Author
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Lanjouw, L, van Maanen, J.J., and Faculteit der Letteren
- Published
- 1996
6. BRCA1/2 Testing Landscape in Ovarian Cancer: A Nationwide, Real-World Data Study.
- Author
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Lanjouw L, Bart J, Mourits MJE, Willems SM, van der Hout AH, Ter Elst A, and de Bock GH
- Abstract
Analyzing BRCA1/2 tumor pathogenic variants (TPVs) in epithelial tubal/ovarian cancers (EOCs) has become an essential part of the diagnostic workflow in many centers to guide treatment options and genetic cascade testing. However, there is no standardization of testing procedures, including techniques, gene assays, or sequencers used, and data on the execution of tumor tests remains scarce. Therefore, we evaluated characteristics of BRCA1/2 tumor testing in advanced-stage EOC with real-world national data. Pathology reports of patients diagnosed with EOC in 2019 in the Netherlands were obtained from the Dutch Pathology Registry (PALGA), and data regarding histological subtype and BRCA1/2 tumor tests were extracted. A total of 999 patients with advanced-stage EOC were included. Tumor tests were performed for 502 patients (50.2%) and BRCA1/2 TPVs were detected in 14.7%. Of all tests, 48.6% used hybrid capture techniques and 26.5% used PCR-based techniques. More than half of the tests (55.0%) analyzed other genes in addition to BRCA1/2 . Overall, this study highlights the heterogeneity in the execution of BRCA1/2 tumor tests. Despite a lack of evidence of quality differences, we emphasize that adequate reporting and internal and external quality monitors are essential for the high-quality implementation and execution of reliable BRCA1/2 tumor testing, which is crucial for identifying all patients with BRCA1/2 TPVs.
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- 2024
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7. BRCA1/2 testing rates in epithelial ovarian cancer: a focus on the untested patients.
- Author
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Lanjouw L, Mourits MJE, Bart J, Ter Elst A, Berger LPV, van der Hout AH, Alam N, and de Bock GH
- Subjects
- Humans, Female, Aged, Carcinoma, Ovarian Epithelial diagnosis, Carcinoma, Ovarian Epithelial genetics, BRCA2 Protein genetics, Germ-Line Mutation, Genetic Testing, Genetic Predisposition to Disease, BRCA1 Protein genetics, Ovarian Neoplasms diagnosis, Ovarian Neoplasms genetics, Ovarian Neoplasms epidemiology
- Abstract
Background: Since 2015, Dutch guidelines have recommended BRCA1/2 pathogenic variant testing for all patients with epithelial ovarian cancer. Recently, recommendations shifted from germline testing to the tumor-first approach, in which tumor tissue is tested first, and subsequent germline testing is performed only in those with BRCA1/2 tumor pathogenic variants or a positive family history. Data on testing rates and on characteristics of patients missing out on testing remain scarce., Objective: To evaluate BRCA1/2 testing rates in patients with epithelial ovarian cancer and compare testing rates of germline testing (performed from 2015 until mid-2018) versus tumor-first testing (implemented mid-2018)., Methods: A consecutive series of 250 patients diagnosed with epithelial ovarian cancer between 2016 and 2019 was included from the OncoLifeS data-biobank of the University Medical Center Groningen, the Netherlands. Testing rates were analyzed for the overall study population and for germline testing (period I) and tumor-first testing (period II) separately. Characteristics of tested and untested patients were compared and predictors for receiving testing were assessed with multivariable logistic regression., Results: Median age was 67.0 years (IQR 59.0-73.0) and 173 (69.2%) patients were diagnosed with high-grade serous carcinoma. Overall, 201 (80.4%) patients were tested. In period I, 137/171 (80.1%) patients were tested and in period II this was 64/79 (81.0%). Patients with non-high-grade serous carcinoma were significantly less likely to receive BRCA1/2 testing than patients with high-grade serous carcinoma (OR=0.23, 95% CI 0.11 to 0.46, p<0.001)., Conclusions: The results show that BRCA1/2 testing rates are suboptimal and suggest that clinicians may not be choosing to test patients with epithelial ovarian cancer with non-high-grade serous ovarian carcinoma, although guidelines recommend BRCA1/2 testing in all patients with epithelial ovarian cancer. Suboptimal testing rates limit optimization of care for patients with epithelial ovarian cancer and counseling of potentially affected relatives., Competing Interests: Competing interests: At the time of conducting this research, NA was an employee of, and held stock in, AstraZeneca LP. GdB and LL were financially supported by a grant from AstraZeneca for the purpose of this research project., (© IGCS and ESGO 2023. Re-use permitted under CC BY-NC. No commercial re-use. Published by BMJ.)
- Published
- 2023
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8. Surgical Menopause and Bilateral Oophorectomy: Effect of Estrogen-Progesterone and Testosterone Replacement Therapy on Psychological Well-being and Sexual Functioning; A Systematic Literature Review.
- Author
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Stuursma A, Lanjouw L, Idema DL, de Bock GH, and Mourits MJE
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- Humans, Female, Hormone Replacement Therapy, Menopause, Ovariectomy, Estrogens therapeutic use, Testosterone therapeutic use, Estradiol, Progesterone, Quality of Life
- Abstract
Background: Besides experiencing vasomotor symptoms, after surgical menopause and bilateral salpingo-oophorectomy (BSO), women experience moderate to severe psychological and sexual symptoms., Aims: To systematically review and meta-analyze the effect of systemic hormone replacement therapy (sHRT) on psychological well-being and sexual functioning in women after surgical menopause and BSO., Methods: Medline/Pubmed, EMBASE and PsychInfo were systematically searched until November 2021. Randomized controlled trials investigating the effect of sHRT on psychological well-being and/or sexual functioning in surgically menopausal women and women after BSO were eligible for inclusion. Two independent authors performed study selection, risk of bias assessment and data extraction. Standardized mean differences (SMDs) were calculated., Outcomes: Primary outcomes for psychological well-being were defined as overall psychological well-being, depression, and anxiety. Primary outcomes for sexual functioning were defined as overall sexual functioning, sexual desire, and sexual satisfaction. All outcomes were assessed on short (≤12 weeks) or medium term (13-26 weeks)., Results: Twelve studies were included. Estradiol had a beneficial effect on depressed mood on short term 3-6 years after surgery or 2 years (median) after surgery with high heterogeneity (SMD: -1.37, 95%CI: -2.38 to -0.37, P = .007, I
2 79%). Testosterone had a beneficial effect on overall sexual functioning on short to medium term 4.6 years (mean) after surgery (SMD 0.38, 95%CI 0.11-0.65, I2 0%) and on sexual desire on medium term at least 3-12 months after surgery (SMD 0.38, 95%CI 0.19-0.56, I2 54%). For most studies, risk of bias was uncertain., Clinical Implications: Estradiol may beneficially affect psychological symptoms after surgical menopause or BSO and testosterone might improve sexual desire and overall sexual functioning., Strengths and Limitations: This review only included patient-reported outcomes, thereby reflected perceived and not simply objective symptoms in surgically menopausal women and women after BSO. The small number of studies highly varied in nature and bias could not be excluded, therefore our results should be interpreted with great caution., Conclusion: Independent randomized controlled clinical trials investigating the effects of estrogen-progesterone and testosterone on psychological and sexual symptoms after surgical menopause are needed., Prospero Registration Number: CRD42019136698. Stuursma A, Lanjouw L, Idema DL, et al. Surgical Menopause and Bilateral Oophorectomy: Effect of Estrogen-Progesterone and Testosterone Replacement Therapy on Psychological Well-being and Sexual Functioning: A Systematic Literature Review. J Sex Med 2022;19:1778-1789., (Copyright © 2022 International Society for Sexual Medicine. Published by Elsevier Inc. All rights reserved.)- Published
- 2022
- Full Text
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