Luc van Lonkhuijzen

Dr. Luc van Lonkhuijzen

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 August 2015 in BMC Cancer
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MHMarline G. Harmsen
Marline G. Harmsen
MJMarieke Arts-De Jong
Marieke Arts-De Jong
NHNicoline Hoogerbrugge
Nicoline Hoogerbrugge
AMAngela H. E. M. Maas
Angela H. E. M. Maas
JPJudith B. Prins
Judith B. Prins
JHJoanne A. de Hullu
Joanne A. de Hullu
Risk-reducing salpingo-oophorectomy (RRSO) around the age of 40 is currently recommended to BRCA1/2 mutation carriers. This procedure decreases the elevated ovarian cancer risk by 80–96 % but it initiates premature menopause as well. The latter is associated with short-term and long-term morbidity, potentially affecting quality of life (QoL). Based on recent insights into the Fallopian tube as possible site of origin of serous ovarian carcinomas, an alternative preventive strategy has been put forward: early risk-reducing salpingectomy (RRS) and delayed oophorectomy (RRO). However, efficacy and safety of this alternative strategy have to be investigated. A multicentre non-randomised trial in 11 Dutch centres for hereditary cancer will be conducted. Eligible patients are premenopausal BRCA1/2 mutation carriers after completing childbearing without (a history of) ovarian carcinoma. Participants choose between standard RRSO at age 35–40 (BRCA1) or 40–45 (BRCA2) and the alternative strategy (RRS upon completion of childbearing and RRO at age 40–45 (BRCA1) or 45–50 (BRCA2)). Women who opt for RRS but do not want to postpone RRO beyond the currently recommended age are included as well. Primary outcome measure is menopause-related QoL. Secondary outcome measures are ovarian/breast cancer incidence, surgery-related morbidity, histopathology, cardiovascular risk factors and diseases, and cost-effectiveness. Mixed model data analysis will be performed. The exact role of the Fallopian tube in ovarian carcinogenesis is still unclear. It is not expected that further fundamental research will elucidate this role in the near future. Therefore, this clinical trial is essential to investigate RRS with delayed RRO as alternative risk-reducing strategy in order to improve QoL. ClinicalTrials.gov ( NCT02321228 )

21 May 2020 in Cancers
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JRJoline Roze
Joline Roze
GMGlen Monroe
Glen Monroe
JKJoachim Kutzera
Joachim Kutzera
JGJolijn Groeneweg
Jolijn Groeneweg
ESEllen Stelloo
Ellen Stelloo
RZRonald Zweemer
Ronald Zweemer
Adult granulosa cell tumors (AGCTs) harbor a somatic FOXL2 c.402C>G mutation in ~95% of cases and are mainly surgically removed due to limited systemic treatment effect. In this study, potentially targetable genomic alterations in AGCTs were investigated by whole genome sequencing on 46 tumor samples and matched normal DNA. Copy number variant (CNV) analysis confirmed gain of chromosome 12 and 14, and loss of 22. Pathogenic TP53 mutations were identified in three patients with highest tumor mutational burden and mitotic activity, defining a high-grade AGCT subgroup. Within-patient tumor comparisons showed 29–80% unique somatic mutations per sample, suggesting tumor heterogeneity. A higher mutational burden was found in recurrent tumors, as compared to primary AGCTs. FOXL2-wildtype AGCTs harbored DICER1, TERT(C228T) and TP53 mutations and similar CNV profiles as FOXL2-mutant tumors. Our study confirms that absence of the FOXL2 c.402C>G mutation does not exclude AGCT diagnosis. The lack of overlapping variants in targetable cancer genes indicates the need for personalized treatment for AGCT patients.

4 July 2025 in Nature Cancer
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DCDavid Cibula
David Cibula
SMSimone Marnitz
Simone Marnitz
JJJiří Jarkovský
Jiří Jarkovský
RKRoman Kocián
Roman Kocián
PDPavel Dundr
Pavel Dundr
CKChristhardt Köhler
Christhardt Köhler

29 April 2020 in Cancers
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KNKristyna Nemejcova
Kristyna Nemejcova
RKRoman Kocian
Roman Kocian
Christhardt KohlerChristhardt Kohler
Christhardt Kohler
JJJiri Jarkovsky
Jiri Jarkovsky
JKJaroslav Klát
Jaroslav Klát
DCDavid Cibula
David Cibula
The quality of pathological assessment is crucial for the safety of patients with cervical cancer if pelvic lymph node dissection is to be replaced by sentinel lymph node (SLN) biopsy. Central pathology review of SLN pathological ultrastaging was conducted in the prospective SENTIX/European Network of Gynaecological Oncological Trial (ENGOT)-CX2 study. All specimens from at least two patients per site were submitted for the central review. For cases with major or critical deviations, the sites were requested to submit all samples from all additional patients for second-round assessment. From the group of 300 patients, samples from 83 cases from 37 sites were reviewed in the first round. Minor, major, critical, and no deviations were identified in 28%, 19%, 14%, and 39% of cases, respectively. Samples from 26 patients were submitted for the second-round review, with only two major deviations found. In conclusion, a high rate of major or critical deviations was identified in the first round of the central pathology review (28% of samples). This reflects a substantial heterogeneity in current practice, despite trial protocol requirements. The importance of the central review conducted prospectively at the early phase of the trial is demonstrated by a substantial improvement of SLN ultrastaging quality in the second-round review.

10 May 2023 in Journal of Clinical Oncology
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Journal Article
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ISIris A.S. Stroot
Iris A.S. Stroot
JBJan Brouwer
Jan Brouwer
JBJoost Bart
Joost Bart
HHHarry Hollema
Harry Hollema
DSDenise J. Stommel-Jenner
Denise J. Stommel-Jenner
OIon behalf of the HEBON Investigators
on behalf of the HEBON Investigators
PURPOSE: To investigate the prevalence of and clinical factors associated with high-grade serous carcinoma (HGSC) at risk-reducing salpingo-oophorectomy (RRSO) in asymptomatic BRCA1/2-pathogenic variant (PV) carriers. PATIENTS AND METHODS: We included BRCA1/2-PV carriers who underwent RRSO between 1995 and 2018 from the Hereditary Breast and Ovarian cancer in the Netherlands study. All pathology reports were screened, and histopathology reviews were performed for RRSO specimens with epithelial abnormalities or where HGSC developed after normal RRSO. We then compared clinical characteristics, including parity and oral contraceptive pill (OCP) use, for women with and without HGSC at RRSO. RESULTS: Of the 2,557 included women, 1,624 had BRCA1, 930 had BRCA2, and three had both BRCA1/2-PV. The median age at RRSO was 43.0 years (range: 25.3-73.8) for BRCA1-PV and 46.8 years (27.6-77.9) for BRCA2-PV carriers. Histopathologic review confirmed 28 of 29 HGSCs and two further HGSCs from among 20 apparently normal RRSO specimens. Thus, 24 (1.5%) BRCA1-PV and 6 (0.6%) BRCA2-PV carriers had HGSC at RRSO, with the fallopian tube identified as the primary site in 73%. The prevalence of HGSC in women who underwent RRSO at the recommended age was 0.4%. Among BRCA1/2-PV carriers, older age at RRSO increased the risk of HGSC and long-term OCP use was protective. CONCLUSION: We detected HGSC in 1.5% ( BRCA1-PV) and 0.6% ( BRCA2-PV) of RRSO specimens from asymptomatic BRCA1/2-PV carriers. Consistent with the fallopian tube hypothesis, we found most lesions in the fallopian tube. Our results highlight the importance of timely RRSO with total removal and assessment of the fallopian tubes and show the protective effects of long-term OCP.

6 December 2023 in Journal of Cancer Policy
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PSPeter R. Scholten
Peter R. Scholten
LSLukas J. A. Stalpers
Lukas J. A. Stalpers
IBIris Bronsema
Iris Bronsema
RORob M. van Os
Rob M. van Os
HWHenrike Westerveld
Henrike Westerveld
LLLuc van Lonkhuijzen
Luc van Lonkhuijzen
Patients with cancer who smoke have more side effects during and after treatment, and a lower survival rate than patients with cancer who quit smoking. Supporting patients with cancer to quit smoking should be standard care. The aim of this systematic review was to determine the most effective smoking cessation method for patients diagnosed with cancer. PubMed, Embase, Web of Science and Google Scholar were systematically searched. Included were randomized controlled trials and observational studies published after January 2000 with any smoking cessation intervention in patients with any type of cancer. Result of these studies were evaluated in a meta-analysis. A total of 18,780 papers were retrieved. After duplicate removal and exclusion based on title and abstract, 72 publications were left. After full text screening, 19 (randomized) controlled trials and 20 observational studies were included. The overall methodological quality of the included studies, rated by GRADE criteria, was very low. Two out of 21 combined intervention trials showed a statistical significant effect. Meta-analysis of 18 RCTs and 3 observational studies showed a significant benefit of combined modality interventions (OR 1.67, 95% C.I.: 1.24-2.26, p=0.0008) and behavioural interventions (OR 1.33, 95% C.I.: 1.02 - 1.74, p=0.03), but not for single modality pharmacological interventions (OR 1.11; 95% C.I.: 0.69-1.78, p=0.66). A combination of pharmacological and behavioural interventions may be the most effective intervention for smoking cessation in patients with cancer.