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Maes B, Dedeurwaerdere F. Hypouricaemia in a patient with hereditary xanthinuria type I. Lancet 2024; 403:1493. [PMID: 38614487 DOI: 10.1016/s0140-6736(24)00472-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/22/2024] [Accepted: 03/05/2024] [Indexed: 04/15/2024]
Affiliation(s)
- Bart Maes
- Department of Nephrology, AZ Delta, Roeselare, Belgium.
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Martens GA, Demol J, Dedeurwaerdere F, Breyne J, De Smet K, De Jaeger P, De Smet D. Rational thresholding of circulating tumor DNA concentration for improved surveillance of metastatic breast cancer. ESMO Open 2024; 9:102235. [PMID: 38320429 PMCID: PMC10937210 DOI: 10.1016/j.esmoop.2024.102235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/13/2023] [Accepted: 01/05/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND The use of circulating tumor DNA (ctDNA) concentration for metastatic cancer surveillance is promising, but uncertainty remains about cut-offs with clinical validity. MATERIALS AND METHODS This observational study recruited 136 subjects with advanced metastatic breast cancer (irrespective of ERBB2/hormone receptor status) for sequencing of their primary tumor in search for PIK3CA hotspot variants amenable for monitoring by droplet digital PCR (ddPCR). The study analyzed 341 on-treatment samples from 19 patients with PIK3CA variants H1047R or E545K enrolled for long-term (median 85 weeks, range 13-125 weeks), frequent (every 3-5 weeks, median of 14 time points per subject, range 2-29) blood sampling for ctDNA quantification by ddPCR, orthogonally validated by deep sequencing. The diagnostic accuracy of ctDNA versus cancer antigen 15-3 (CA15-3) concentrations to predict disease progression within 12 weeks was investigated using receiver operating characteristic (ROC) analysis. Likelihood ratios were used for rational selection of ctDNA result intervals. RESULTS ctDNA [area under the ROC curve (AUC) 0.848, 95% confidence interval (CI) 0.791-0.895] showed superior diagnostic performance than CA15-3 (AUC 0.670, 95% CI 0.601-0.735, P < 0.001) to predict clinical progression within 12 weeks. ctDNA levels below 10 mutant allele copies/ml had high negative predictive value (88%), while levels above 100 copies/ml detected 64% of progressions 10 weeks earlier versus standard of care. Logistic regression analysis indicated complementary value of ctDNA and the presence of two consecutive CA15-3 rises, resulting in a model with 86% (95% CI 74% to 93%) positive predictive value and a clinically meaningful result in 89% of blood draws. CONCLUSIONS Intensive ctDNA quantification improves metastatic breast cancer surveillance and enables individualized risk-based scheduling of clinical care.
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Affiliation(s)
- G A Martens
- Department of Laboratory Medicine, AZ Delta General Hospital, Roeselare; Department of Biomolecular Medicine, Ghent University, Ghent.
| | - J Demol
- Department of Oncology, AZ Delta General Hospital, Roeselare
| | | | - J Breyne
- Department of Laboratory Medicine, AZ Delta General Hospital, Roeselare
| | - K De Smet
- Department of Radiology, AZ Delta General Hospital, Roeselare
| | - P De Jaeger
- Department of RADar Learning and Innovation Center, AZ Delta General Hospital, Roeselare, Belgium
| | - D De Smet
- Department of Laboratory Medicine, AZ Delta General Hospital, Roeselare
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Feys S, Dedeurwaerdere F, Lagrou K, Van Lerbeirghe J, Deeren D. Successful Multimodal Therapy with Intracerebral Liposomal Amphotericin B and Systemic High-Dose Isavuconazole in Proven Disseminated Aspergillosis. J Fungi (Basel) 2023; 9:jof9030327. [PMID: 36983495 PMCID: PMC10054323 DOI: 10.3390/jof9030327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/30/2023] Open
Abstract
We report the case of a 32-year-old man receiving chemotherapeutics for an acute B-lymphoblastic leukemia who developed proven cerebral and pulmonary aspergillosis with Aspergillus flavus. Because of progressive fungal disease with neurological deterioration despite adequate systemic antifungal therapy and surgical debridement, intracerebral administration of liposomal amphotericin B was initiated at 5 mg twice weekly. This led to improvement of the cerebral infection. Surgical debridement of a pleural Aspergillus empyema was necessary, and pleural trough level of isavuconazole was found to be subtherapeutic despite adequate blood trough levels, which led us to increase the dose of isavuconazole. We conclude that intralesional amphotericin B might be beneficial at 5 mg twice weekly in cerebral aspergillosis if systemic antifungals and surgical debridement fail. In Aspergillus empyema, measurement of pleural isavuconazole trough levels should be considered.
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Affiliation(s)
- Simon Feys
- Medical Intensive Care Unit, UZ Leuven, 3000 Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | | | - Katrien Lagrou
- Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
- Department of Laboratory Medicine and National Reference Center of Mycoses, UZ Leuven, 3000 Leuven, Belgium
| | | | - Dries Deeren
- Department of Hematology, AZ Delta, 8800 Roeselare, Belgium
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Swaerts K, Dedeurwaerdere F, De Smet D, De Jaeger P, Martens GA. DeltaMSI: artificial intelligence-based modeling of microsatellite instability scoring on next-generation sequencing data. BMC Bioinformatics 2023; 24:73. [PMID: 36859168 PMCID: PMC9976396 DOI: 10.1186/s12859-023-05186-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 02/14/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND DNA mismatch repair deficiency (dMMR) testing is crucial for detection of microsatellite unstable (MSI) tumors. MSI is detected by aberrant indel length distributions of microsatellite markers, either by visual inspection of PCR-fragment length profiles or by automated bioinformatic scoring on next-generation sequencing (NGS) data. The former is time-consuming and low-throughput while the latter typically relies on simplified binary scoring of a single parameter of the indel distribution. The purpose of this study was to use machine learning to process the full complexity of indel distributions and integrate it into a robust script for screening of dMMR on small gene panel-based NGS data of clinical tumor samples without paired normal tissue. METHODS Scikit-learn was used to train 7 models on normalized read depth data of 36 microsatellite loci in a cohort of 133 MMR proficient (pMMR) and 46 dMMR tumor samples, taking loss of MLH1/MSH2/PMS2/MSH6 protein expression as reference method. After selection of the optimal model and microsatellite panel the two top-performing models per locus (logistic regression and support vector machine) were integrated into a novel script (DeltaMSI) for combined prediction of MSI status on 28 marker loci at sample level. Diagnostic performance of DeltaMSI was compared to that of mSINGS, a widely used script for MSI detection on unpaired tumor samples. The robustness of DeltaMSI was evaluated on 1072 unselected, consecutive solid tumor samples in a real-world setting sequenced using capture chemistry, and 116 solid tumor samples sequenced by amplicon chemistry. Likelihood ratios were used to select result intervals with clinical validity. RESULTS DeltaMSI achieved higher robustness at equal diagnostic power (AUC = 0.950; 95% CI 0.910-0.975) as compared to mSINGS (AUC = 0.876; 95% CI 0.823-0.918). Its sensitivity of 90% at 100% specificity indicated its clinical potential for high-throughput MSI screening in all tumor types. Clinical Trial Number/IRB B1172020000040, Ethical Committee, AZ Delta General Hospital.
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Affiliation(s)
- Koen Swaerts
- grid.478056.80000 0004 0439 8570Department of Laboratory Medicine, AZ Delta General Hospital, Deltalaan 1, 8800 Roeselare, Belgium ,grid.478056.80000 0004 0439 8570RADar Innovation Center, AZ Delta General Hospital, Roeselare, Belgium
| | - Franceska Dedeurwaerdere
- grid.478056.80000 0004 0439 8570Department of Pathology, AZ Delta General Hospital, Roeselare, Belgium
| | - Dieter De Smet
- grid.478056.80000 0004 0439 8570Department of Laboratory Medicine, AZ Delta General Hospital, Deltalaan 1, 8800 Roeselare, Belgium ,grid.478056.80000 0004 0439 8570RADar Innovation Center, AZ Delta General Hospital, Roeselare, Belgium
| | - Peter De Jaeger
- grid.478056.80000 0004 0439 8570RADar Innovation Center, AZ Delta General Hospital, Roeselare, Belgium
| | - Geert A. Martens
- grid.478056.80000 0004 0439 8570Department of Laboratory Medicine, AZ Delta General Hospital, Deltalaan 1, 8800 Roeselare, Belgium ,grid.478056.80000 0004 0439 8570RADar Innovation Center, AZ Delta General Hospital, Roeselare, Belgium ,grid.5342.00000 0001 2069 7798Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
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Vanhauwaert D, Pinson H, Vanschoenbeek K, Dedeurwaerdere F, De Gendt C, Boterberg T, De Vleeschouwer S. Cancer Registration, Molecular Marker Status, and Adherence to the WHO 2016 Classification of Pathology Reports for Glioma Diagnosed during 2017-2019 in Belgium. Pathobiology 2023; 90:365-376. [PMID: 36702113 DOI: 10.1159/000529320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/22/2023] [Indexed: 01/28/2023] Open
Abstract
INTRODUCTION The objective of this study was to cross-check and, if necessary, adjust registered ICD-O-3 topography and morphology codes with the findings in pathology reports available at the Belgian Cancer Registry (BCR) for glioma patients. Additionally, integration of molecular markers in the pathological diagnosis and concordance with WHO 2016 classification is investigated. METHODS Since information regarding molecular tests and corresponding conclusions are not available as structured data at population level, a manual screening of all pseudonymized pathology reports available at the BCR for registered glioma patients (2017-2019) was conducted. ICD-O-3 morphology and topography codes from the BCR database (based on information as provided by hospital oncological care programmes and pathology laboratories), were, at tumour level, cross-checked with the data from the pathology reports and, if needed, specified or corrected. Relevant molecular markers (IDH1/2, 1p19q codeletion, promoter region of the MGMT gene [MGMTp]) were manually extracted from the pathology reports. RESULTS In 95.3% of gliomas, the ICD-O-3 morphology code was correct. Non-specific topography codes were specified in 9.3%, while 3.3% of specific codes were corrected. The IDH status was known in 75.2% of astrocytic tumours. The rate of correct integrated diagnoses varied from 47.6% to 56.4% among different gliomas. MGMTp methylation status was available in 32.2% of glioblastomas. CONCLUSION Both the integration of molecular markers in the conclusion of the pathology reports and the delivery of those reports to the BCR can be improved. The availability of distinct ICD-O-3 codes for each molecularly defined tumour entity within the WHO classification would increase the consistency of cancer registration, facilitate population level research and international benchmarking.
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Affiliation(s)
| | - Harry Pinson
- Department of Neurosurgery, Ghent University Hospital, Ghent, Belgium
| | | | | | | | - Tom Boterberg
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - Steven De Vleeschouwer
- Department of Neurosurgery, UZ Leuven, Leuven, Belgium
- Department Neurosciences and Leuven Brain Institute (LBI), KU Leuven, Leuven, Belgium
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Vanhauwaert DJ, Pinson H, Dedeurwaerdere F, Leloup A, Vanschoenbeek K, De Gendt C, De Schutter H, De Vleeschouwer S, Boterberg T. P11.28.A Cancer registration and adherence to the WHO 2016 classification of pathology reports for astrocytic tumors in Belgium from 2017 to 2019. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The objective of this study is to cross-check the ICD-O-3 topography and morphology codes of registered glioma patients with findings in their pathology reports and to investigate the integration of relevant molecular markers in the final histopathological diagnosis.
Materials and methods
Since information regarding molecular tests and corresponding conclusions are not available as structured data at the Belgian population level a manual screening of all pseudonymized full text pathology reports available at the Belgian Cancer Registry (BCR) for adult glioma patients diagnosed between 2017 and 2019 was conducted. ICD-O-3 morphology and topography codes from the BCR database (provided by the hospital oncological care programs and laboratories for histopathology), were cross-checked with the data from the pathology reports. Relevant molecular markers were manually extracted from the pathology reports of confirmed glial tumors. The final diagnosis as mentioned in the reports and the integration of the appropriate molecular markers were checked against the WHO 2016 classification.
Results
For 1.892 of 2.379 registered gliomas (73%), a specific topographic code was provided. For 8% of patients registered with code C71.9 (unspecified region of the brain), a change to a specific topography code was implemented based on details in the pathology reports. For only 98 of 2.186 patients (4,5%) with available pathology reports, the ICD-O-3 morphology code was adjusted based on the information in the pathology reports. For 59 patients this was a change of grade within the same tumor group. In the subgroup of patients with astrocytic tumors, for 314 of 1.887 patients (16,6%) the IDH status (IDH1-IHC or IDH1/2-NGS) was not identifiable in the available reports. For only 1.091 of 1.887 patients (57,8%) the reports provided an integrated diagnosis including molecular findings, while for the other reports the tumor was not specified (NOS) in the conclusion. For 1.309 of 1.887 patients (69,4%), the final diagnosis in the pathology reports was compatible with the molecular markers. For 553 (29%) patients this was not the case because the relevant molecular markers were not integrated in the conclusion although available (i.e. in the conclusion of these pathology reports the tumor was NOS, but details of the molecular test result were however available somewhere in the reports).
Conclusion
Morphology codes of registered glioma are largely in line with findings in the pathology reports. The use of specific ICD-O-3 topography codes should be further encouraged and also molecular testing and the use of the integrated diagnosis in the pathology reports can be improved. These findings will be further processed and incorporated in the ongoing Quality Indicator project for glioma in Belgium and will be used to develop strategies to further optimize the reporting of these tumors towards the BCR.
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Affiliation(s)
| | - H Pinson
- Ghent University Hospital , Ghent , Belgium
| | | | - A Leloup
- Belgian Cancer Registry , Brussels , Belgium
| | | | - C De Gendt
- Belgian Cancer Registry , Brussels , Belgium
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Thouvenin J, Van Marcke C, Decoster L, Raicevic G, Punie K, Vandenbulcke M, Salgado R, Van Valckenborgh E, Maes B, Joris S, Steichel DV, Vranken K, Jacobs S, Dedeurwaerdere F, Martens G, Devos H, Duhoux FP, Rasschaert M, Pauwels P, Geboes K, Collignon J, Tejpar S, Canon JL, Peeters M, Rutten A, Van de Mooter T, Vermeij J, Schrijvers D, Demey W, Lybaert W, Van Huysse J, Mebis J, Awada A, Claes KBM, Hebrant A, Van der Meulen J, Delafontaine B, Bempt IV, Maetens J, de Hemptinne M, Rottey S, Aftimos P, De Grève J. PRECISION: the Belgian molecular profiling program of metastatic cancer for clinical decision and treatment assignment. ESMO Open 2022; 7:100524. [PMID: 35970014 PMCID: PMC9434164 DOI: 10.1016/j.esmoop.2022.100524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 11/29/2022] Open
Abstract
PRECISION is an initiative from the Belgian Society of Medical Oncology (BSMO) in collaboration with several stakeholders, encompassing four programs that aim to boost genomic and clinical knowledge with the ultimate goal to offer patients with metastatic solid tumors molecularly guided treatments. The PRECISION 1 study has led to the creation of a clinico-genomic database. The Belgian Approach for Local Laboratory Extensive Tumor Testing (BALLETT) and GeNeo studies will increase the number of patients with advanced cancer that have comprehensive genotyping of their cancer. The PRECISION 2 project consists of investigator-initiated phase II studies aiming to provide access to a targeted drug for patients whose tumors harbor actionable mutations in case the matched drug is not available through reimbursement or clinical trials in Belgium.
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Affiliation(s)
- J Thouvenin
- Hospices Civils de Lyon, Medical Oncology, Lyon, France; Institut Jules Bordet, Medical Oncology Clinic, Brussels, Belgium
| | | | - L Decoster
- UZ Brussel, Medical Oncology, Brussels, Belgium
| | | | - K Punie
- KU Leuven University Hospitals Leuven, General Medical Oncology, Leuven, Belgium
| | | | - R Salgado
- GasthuisZusters Antwerpen, Pathology, Antwerp, Belgium
| | | | - B Maes
- Laboratory of Molecular Diagnostics, Jessa Hospital Campus Virga Jesse, Hasselt, Belgium
| | - S Joris
- UZ Brussel, Medical Oncology, Brussels, Belgium
| | | | - K Vranken
- Pediatric Oncology, WIV-ISP, Leuven, Belgium
| | | | | | - G Martens
- Laboratoriumgeneeskunde, AZ Delta, Roeselare, Belgium
| | - H Devos
- Laboratoriumgeneeskunde, AZ Sint-Jan, Bruges, Belgium
| | - F P Duhoux
- UCLouvain, Ottignies-Louvain-la-Neuve, Belgium
| | - M Rasschaert
- Universitair Ziekenhuis Antwerpen, Medical Oncology, Antwerpen, Belgium; Medical Oncology, AZ Monica, Deurne, Belgium
| | - P Pauwels
- Universitair Ziekenhuis Antwerpen, Pathology, Antwerpen, Belgium
| | - K Geboes
- Division of Digestive Oncology, Department of Gastroenterology, UZ Gent, Gent, Belgium; Department of Internal Medicine and Pediatrics, UZ Gent, Gent, Belgium
| | - J Collignon
- Medical Oncology, CHU de Liege - Hospital Sart Tilman, Liège, Belgium
| | | | - J-L Canon
- Grand Hôpital de Charleroi Site Notre Dame, Service d'Oncologie-Hématologie, Charleroi, Belgium
| | - M Peeters
- Universitair Ziekenhuis Antwerpen, Oncology, Antwerpen, Belgium
| | - A Rutten
- GZA Ziekenhuizen Campus Sint-Vincentius, Medical Oncology, Antwerpen, Belgium
| | - T Van de Mooter
- GZA Ziekenhuizen Campus Sint-Vincentius, Medical Oncology, Antwerpen, Belgium
| | - J Vermeij
- ZNA Middelheim, Medical Oncology, Antwerpen, Belgium
| | | | - W Demey
- AZ Klina, Medical Oncology, Brasschaat, Belgium
| | - W Lybaert
- GZA Ziekenhuizen Campus Sint-Vincentius, Medical Oncology, Antwerpen, Belgium
| | - J Van Huysse
- AZ Sint-Jan Brugge-Oostende, Pathology, Brugge, Belgium
| | - J Mebis
- Laboratory of Molecular Diagnostics, Jessa Hospital Campus Virga Jesse, Hasselt, Belgium
| | - A Awada
- Institut Jules Bordet, Medical Oncology Clinic, Anderlecht, Belgium
| | | | | | | | | | | | | | | | - S Rottey
- Medical Oncology Department, UZ Gent, Gent, Belgium
| | - P Aftimos
- Institut Jules Bordet, Medical Oncology Clinic, Anderlecht, Belgium
| | - J De Grève
- UZ Brussel, Medical Oncology, Brussels, Belgium.
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Van der Linden M, Van Gaever B, Raman L, Vermaelen K, Demedts I, Surmont V, Himpe U, Lievens Y, Ferdinande L, Dedeurwaerdere F, Van der Meulen J, Claes K, Menten B, Van Dorpe J. Application of an Ultrasensitive NGS-Based Blood Test for the Diagnosis of Early-Stage Lung Cancer: Sensitivity, a Hurdle Still Difficult to Overcome. Cancers (Basel) 2022; 14:cancers14082031. [PMID: 35454937 PMCID: PMC9026713 DOI: 10.3390/cancers14082031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/12/2022] [Accepted: 04/12/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Currently, an accurate diagnosis of lung cancer relies on the microscopic examination of tissue biopsies. These samples can, however, only be obtained by invasive procedures. The aim of our study was to evaluate the use of a liquid biopsy for early-stage lung cancer detection in patients with a lung lesion on imaging. This approach would be particularly relevant for suspected lung lesions that are difficult to reach for a tissue-based diagnosis. Despite technical improvements for the use of liquid biopsy-based cell-free DNA analysis, its application for the detection of early-stage lung cancer is currently limited by sensitivity and a biological background of somatic variants. Abstract Diagnosis of lung cancer requires histological examination of a tissue sample, which in turn requires an invasive procedure that cannot always be obtained. Circulating tumor DNA can be reliably detected in blood samples of advanced-stage lung cancer patients and might also be a minimally invasive alternative for early-stage lung cancer detection. We wanted to explore the potential of targeted deep sequencing as a test for the diagnosis of early-stage lung cancer in combination with imaging. Mutation detection on cell-free DNA from pretreatment plasma samples of 51 patients with operable non-small cell lung cancer was performed and results were compared with 12 control patients undergoing surgery for a non-malignant lung lesion. By using a variant allele frequency threshold of 1%, somatic variants were detected in 23.5% of patients with a median variant allele fraction of 3.65%. By using this threshold, we could almost perfectly discriminate early-stage lung cancer patients from controls. Our study results are discussed in the light of those from other studies. Notwithstanding the potential of today’s techniques for the use of liquid biopsy-based cell-free DNA analysis, sensitivity of this application for early-stage lung cancer detection is currently limited by a biological background of somatic variants with low variant allele fraction.
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Affiliation(s)
- Malaïka Van der Linden
- Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium; (M.V.d.L.); (B.V.G.); (L.R.); (L.F.)
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
| | - Bram Van Gaever
- Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium; (M.V.d.L.); (B.V.G.); (L.R.); (L.F.)
- Department of Pathology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Lennart Raman
- Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium; (M.V.d.L.); (B.V.G.); (L.R.); (L.F.)
| | - Karim Vermaelen
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
- Department of Pulmonary Medicine, Ghent University Hospital, 9000 Ghent, Belgium;
- Department of Internal Medicine and Pediatrics, Ghent University, 9000 Ghent, Belgium
| | - Ingel Demedts
- Department of Pulmonary Medicine, AZ Delta, 8800 Roeselare, Belgium; (I.D.); (U.H.)
| | - Veerle Surmont
- Department of Pulmonary Medicine, Ghent University Hospital, 9000 Ghent, Belgium;
- Department of Internal Medicine and Pediatrics, Ghent University, 9000 Ghent, Belgium
| | - Ulrike Himpe
- Department of Pulmonary Medicine, AZ Delta, 8800 Roeselare, Belgium; (I.D.); (U.H.)
| | - Yolande Lievens
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
- Department of Radiation Oncology, Ghent University Hospital, 9000 Ghent, Belgium
- Department of Human Structure and Repair, Ghent University, 9000 Ghent, Belgium
| | - Liesbeth Ferdinande
- Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium; (M.V.d.L.); (B.V.G.); (L.R.); (L.F.)
- Department of Pathology, Ghent University Hospital, 9000 Ghent, Belgium
| | | | - Joni Van der Meulen
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Kathleen Claes
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Jo Van Dorpe
- Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium; (M.V.d.L.); (B.V.G.); (L.R.); (L.F.)
- Cancer Research Institute Ghent, 9000 Ghent, Belgium; (K.V.); (Y.L.); (J.V.d.M.); (K.C.)
- Department of Pathology, Ghent University Hospital, 9000 Ghent, Belgium
- Correspondence:
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Van Bockstal MR, Beniuga G, Craciun L, Creytens D, Dedeurwaerdere F, Delvenne P, Demetter P, De Wiest B, Dewinne K, Habran L, Pauwels P, Theate I, Vander Borght S, Van Der Steen K, Weynand B. The Use of Pan-Tropomyosin Receptor Kinase Immunohistochemistry as a Screening Tool for the Detection of Neurotrophic Tropomyosin-Related Kinase Fusions: Real-World Data from a National Multicentric Retrospective Study. Pathobiology 2022; 89:393-406. [PMID: 35350025 DOI: 10.1159/000522426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 02/02/2022] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION The neurotrophic tropomyosin-related kinase (NTRK) genes encode the tropomyosin receptor kinases (TRKs). Patients with solid tumors harboring an oncogenic NTRK fusion are eligible for treatment with TRK inhibitors. NTRK fusion is often associated with TRK overexpression. Pan-TRK immunohistochemistry (IHC) is used to screen for NTRK fusions, but immunoreactivity patterns are poorly defined. METHODS Data on pan-TRK immunoreactivity patterns in 2,669 solid tumors (comprising carcinomas, sarcomas, and melanocytic lesions) were retrospectively collected by nine laboratories and comprised tumor type, percentage of pan-TRK-positive tumor cells, staining intensity, cytoplasmic, membrane and/or nuclear staining pattern, and the presence or absence of NTRK fusion. RESULTS Overall, 2,457 tumors (92%) were pan-TRK negative and 212 neoplasms (8%) were pan-TRK positive. Twenty-two pan-TRK-positive tumors (0.8%) harbored an NTRK fusion, representing 10% of all pan-TRK-positive tumors. Cytoplasmic immunoreactivity was most often observed, followed by membrane immunoreactivity. Nuclear pan-TRK positivity was least frequent, but was most often (33%) associated with NTRK fusion. CONCLUSION Pan-TRK IHC can be used to screen for NTRK fusions, especially in commonly diagnosed solid tumors with low NTRK fusion prevalence. In case of pan-TRK immunoreactivity, regardless of its intensity and tumor cell percentage, subsequent molecular tests should be performed to formally confirm the presence or absence of NTRK fusions.
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Affiliation(s)
- Mieke R Van Bockstal
- Department of Pathology, Cliniques Universitaires Saint-Luc (CUSL), Woluwé-Saint-Lambert, Brussels, Belgium.,Institute of Clinical and Experimental Research (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Gabriela Beniuga
- Institut de Pathologie et de Génétique (IPG), Charleroi, Belgium
| | - Ligia Craciun
- Department of Pathology, Institut Jules Bordet, Brussels, Belgium
| | - David Creytens
- Department of Pathology, Ghent University Hospital (UZG), Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, CRIG, Ghent University Hospital, Ghent University, Ghent, Belgium
| | | | - Philippe Delvenne
- Anatomopathology Department, University Hospital of Liège (CHU Liège), Liège, Belgium
| | - Pieter Demetter
- Department of Pathology, Institut Jules Bordet, Brussels, Belgium
| | - Bart De Wiest
- Department of Pathology, Onze-Lieve-Vrouwziekenhuis (OLV) Aalst, Aalst, Belgium
| | - Koen Dewinne
- Department of Pathology, Antwerp University Hospital (UZA), Edegem, Belgium
| | - Lionel Habran
- Anatomopathology Department, University Hospital of Liège (CHU Liège), Liège, Belgium
| | - Patrick Pauwels
- Department of Pathology, Antwerp University Hospital (UZA), Edegem, Belgium
| | - Ivan Theate
- Institut de Pathologie et de Génétique (IPG), Charleroi, Belgium
| | - Sara Vander Borght
- Department of Pathology, University Hospitals Leuven (UZL), Leuven, Belgium
| | - Kris Van Der Steen
- Department of Pathology, Onze-Lieve-Vrouwziekenhuis (OLV) Aalst, Aalst, Belgium
| | - Birgit Weynand
- Department of Pathology, University Hospitals Leuven (UZL), Leuven, Belgium
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10
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Christgen M, Kandt LD, Antonopoulos W, Bartels S, Van Bockstal MR, Bredt M, Brito MJ, Christgen H, Colpaert C, Cserni B, Cserni G, Daemmrich ME, Danebrock R, Dedeurwaerdere F, van Deurzen CH, Erber R, Fathke C, Feist H, Fiche M, Gonzalez CA, Ter Hoeve ND, Kooreman L, Krech T, Kristiansen G, Kulka J, Laenger F, Lafos M, Lehmann U, Martin-Martinez MD, Mueller S, Pelz E, Raap M, Ravarino A, Reineke-Plaass T, Schaumann N, Schelfhout AM, De Schepper M, Schlue J, Van de Vijver K, Waelput W, Wellmann A, Graeser M, Gluz O, Kuemmel S, Nitz U, Harbeck N, Desmedt C, Floris G, Derksen PW, van Diest PJ, Vincent-Salomon A, Kreipe H. Inter-observer agreement for the histological diagnosis of invasive lobular breast carcinoma. J Pathol Clin Res 2022; 8:191-205. [PMID: 34889530 PMCID: PMC8822373 DOI: 10.1002/cjp2.253] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/17/2021] [Accepted: 11/24/2021] [Indexed: 12/20/2022]
Abstract
Invasive lobular breast carcinoma (ILC) is the second most common breast carcinoma (BC) subtype and is mainly driven by loss of E‐cadherin expression. Correct classification of BC as ILC is important for patient treatment. This study assessed the degree of agreement among pathologists for the diagnosis of ILC. Two sets of hormone receptor (HR)‐positive/HER2‐negative BCs were independently reviewed by participating pathologists. In set A (61 cases), participants were provided with hematoxylin/eosin (HE)‐stained sections. In set B (62 cases), participants were provided with HE‐stained sections and E‐cadherin immunohistochemistry (IHC). Tumor characteristics were balanced. Participants classified specimens as non‐lobular BC versus mixed BC versus ILC. Pairwise inter‐observer agreement and agreement with a pre‐defined reference diagnosis were determined with Cohen's kappa statistics. Subtype calls were correlated with molecular features, including CDH1/E‐cadherin mutation status. Thirty‐five pathologists completed both sets, providing 4,305 subtype calls. Pairwise inter‐observer agreement was moderate in set A (median κ = 0.58, interquartile range [IQR]: 0.48–0.66) and substantial in set B (median κ = 0.75, IQR: 0.56–0.86, p < 0.001). Agreement with the reference diagnosis was substantial in set A (median κ = 0.67, IQR: 0.57–0.75) and almost perfect in set B (median κ = 0.86, IQR: 0.73–0.93, p < 0.001). The median frequency of CDH1/E‐cadherin mutations in specimens classified as ILC was 65% in set A (IQR: 56–72%) and 73% in set B (IQR: 65–75%, p < 0.001). Cases with variable subtype calls included E‐cadherin‐positive ILCs harboring CDH1 missense mutations, and E‐cadherin‐negative ILCs with tubular elements and focal P‐cadherin expression. ILCs with trabecular growth pattern were often misclassified as non‐lobular BC in set A but not in set B. In conclusion, subtyping of BC as ILC achieves almost perfect agreement with a pre‐defined reference standard, if assessment is supported by E‐cadherin IHC. CDH1 missense mutations associated with preserved E‐cadherin protein expression, E‐ to P‐cadherin switching in ILC with tubular elements, and trabecular ILC were identified as potential sources of discordant classification.
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Affiliation(s)
| | | | | | - Stephan Bartels
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | | | - Martin Bredt
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Maria Jose Brito
- Pathology and Breast Unit, Champalimaud Foundation, Lisbon, Portugal
| | | | - Cecile Colpaert
- Department of Pathology, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | | | - Gábor Cserni
- Department of Pathology, University of Szeged, Szeged, Hungary
| | | | | | | | | | - Ramona Erber
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), and Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
| | - Christine Fathke
- Institute of Pathology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Henning Feist
- Institute of Pathology, Diakonissenkrankenhaus Flensburg, Flensburg, Germany
| | - Maryse Fiche
- Institute of Pathology Aurigen, Aurigen SA, Lausanne, Switzerland
| | - Claudia Aura Gonzalez
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Natalie D Ter Hoeve
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Loes Kooreman
- Institute of Pathology and GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Till Krech
- Institute of Pathology, University Clinics Hamburg-Eppendorf, Hamburg, Germany.,Germany and Pathocom Network for Pathology, Osnabrück, Germany
| | | | - Janina Kulka
- 2nd Department of Pathology, Semmelweis University Budapest, Budapest, Hungary
| | - Florian Laenger
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Marcel Lafos
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Ulrich Lehmann
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | | | - Sophie Mueller
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Enrico Pelz
- Institute of Pathology Viersen, Viersen, Germany
| | - Mieke Raap
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | | | | | - Nora Schaumann
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | | | - Maxim De Schepper
- Department of Pathology, University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium.,Laboratory for Translational Breast Cancer Research, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Jerome Schlue
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Koen Van de Vijver
- Cancer Research Institute Ghent, Ghent University Hospital, Ghent, Belgium
| | - Wim Waelput
- Department of Pathology, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Monika Graeser
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany.,Gynecologic University Clinic Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Oleg Gluz
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany
| | - Sherko Kuemmel
- West German Study Group, Moenchengladbach, Germany.,Breast Unit, Kliniken Essen-Mitte, Essen, Germany, and Charité - Universitätsmedizin Berlin, Department of Gynecology with Breast Center, Berlin, Germany
| | - Ulrike Nitz
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany
| | - Nadia Harbeck
- West German Study Group, Moenchengladbach, Germany.,Department of Gynecology and Obstetrics, Breast Center, University of Munich (LMU) and CCCLMU, Munich, Germany
| | - Christine Desmedt
- Laboratory for Translational Breast Cancer Research, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Giuseppe Floris
- Department of Pathology, University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium.,Department of Imaging and Radiology, Laboratory for Cell and Tissue Translational Research, KU-Leuven/UZ Leuven, Leuven, Belgium
| | - Patrick Wb Derksen
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Paul J van Diest
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Anne Vincent-Salomon
- Pathology-Genetics-Immunology Department, Institut Curie, PSL Research University, Paris, France
| | - Hans Kreipe
- Institute of Pathology, Hannover Medical School, Hannover, Germany
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11
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Van der Eecken K, Van der Linden M, Raman L, Creytens D, Dedeurwaerdere F, De Winne K, Ferdinande L, Lammens M, Menten B, Rottiers I, Van Gaever B, Van den Broecke C, Van de Vijver K, Van Roy N, Verbeke S, Van Dorpe J. Shallow whole-genome sequencing: a useful, easy to apply molecular technique for CNA detection on FFPE tumor tissue-a glioma-driven study. Virchows Arch 2022; 480:677-686. [PMID: 35034191 DOI: 10.1007/s00428-022-03268-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/10/2021] [Accepted: 01/03/2022] [Indexed: 11/27/2022]
Abstract
Copy number alterations (CNAs) have increasingly become part of the diagnostic algorithm of glial tumors. Alterations such as homozygous deletion of CDKN2A/B, 7 +/ 10 - chromosome copy number changes or EGFR amplification are predictive of a poor prognosis. The codeletion of chromosome arms 1p and 19q, typically associated with oligodendroglioma, implies a more favorable prognosis. Detection of this codeletion by the current diagnostic standard, being fluorescence in situ hybridization (FISH), is sometimes however subject to technical and interpretation problems. In this study, we evaluated CNA detection by shallow whole-genome sequencing (sWGS) as an inexpensive, complementary molecular technique. A cohort of 36 glioma tissue samples, enriched with "difficult" and "ambiguous" cases, was analyzed by sWGS. sWGS results were compared with FISH assays of chromosomes 1p and 19q. In addition, CNAs relevant to glioblastoma diagnosis were explored. In 4/36 samples, EGFR (7p11.2) amplifications and homozygous loss of CDKN2A/B were identified by sWGS. Six out of 8 IDH-wild-type glioblastomas demonstrated a prognostic chromosome 7/chromosome 10 signature. In 11/36 samples, local interstitial and terminal 1p/19q alterations were detected by sWGS, implying that FISH's targeted nature might promote false arm-level extrapolations. In this cohort, differences in overall survival between patients with and without codeletion were better pronounced by the sequencing-based distinction (likelihood ratio of 7.48) in comparison to FISH groupings (likelihood ratio of 0.97 at diagnosis and 1.79 ± 0.62 at reobservation), suggesting sWGS is more accurate than FISH. We recognized adverse effects of tissue block age on FISH signals. In addition, we show how sWGS reveals relevant aberrations beyond the 1p/19q state, such as EGFR amplification, combined gain of chromosome 7 and loss of chromosome 10, and homozygous loss of CDKN2A/B. The findings presented by this study might stimulate implementation of sWGS as a complementary, easy to apply technique for copy number detection.
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Affiliation(s)
- Kim Van der Eecken
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | - Malaïka Van der Linden
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Lennart Raman
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - David Creytens
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | | | - Koen De Winne
- Department of Pathology, Antwerp University Hospital, Antwerp, Belgium
| | - Liesbeth Ferdinande
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | - Martin Lammens
- Department of Pathology, Antwerp University Hospital, Antwerp, Belgium
| | - Björn Menten
- Cancer Research Institute (CRIG), Ghent, Belgium
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Isabelle Rottiers
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | - Bram Van Gaever
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
| | | | - Koen Van de Vijver
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | - Nadine Van Roy
- Cancer Research Institute (CRIG), Ghent, Belgium
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Sofie Verbeke
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium
- Cancer Research Institute (CRIG), Ghent, Belgium
| | - Jo Van Dorpe
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium.
- Cancer Research Institute (CRIG), Ghent, Belgium.
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12
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Van Bockstal MR, François A, Altinay S, Arnould L, Balkenhol M, Broeckx G, Burguès O, Colpaert C, Dedeurwaerdere F, Dessauvagie B, Duwel V, Floris G, Fox S, Gerosa C, Hastir D, Jaffer S, Kurpershoek E, Lacroix-Triki M, Laka A, Lambein K, MacGrogan GM, Marchio C, Martinez MDM, Nofech-Mozes S, Peeters D, Ravarino A, Reisenbichler E, Resetkova E, Sanati S, Schelfhout AM, Schelfhout V, Shaaban A, Sinke R, Stanciu-Pop CM, van Deurzen CHM, Van de Vijver KK, Van Rompuy AS, Vincent-Salomon A, Wen H, Wong S, Bouzin C, Galant C. Interobserver variability in the assessment of stromal tumor-infiltrating lymphocytes (sTILs) in triple-negative invasive breast carcinoma influences the association with pathological complete response: the IVITA study. Mod Pathol 2021; 34:2130-2140. [PMID: 34218258 PMCID: PMC8595512 DOI: 10.1038/s41379-021-00865-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022]
Abstract
High stromal tumor-infiltrating lymphocytes (sTILs) in triple-negative breast cancer (TNBC) are associated with pathological complete response (pCR) after neoadjuvant chemotherapy (NAC). Histopathological assessment of sTILs in TNBC biopsies is characterized by substantial interobserver variability, but it is unknown whether this affects its association with pCR. Here, we aimed to investigate the degree of interobserver variability in an international study, and its impact on the relationship between sTILs and pCR. Forty pathologists assessed sTILs as a percentage in digitalized biopsy slides, originating from 41 TNBC patients who were treated with NAC followed by surgery. Pathological response was quantified by the MD Anderson Residual Cancer Burden (RCB) score. Intraclass correlation coefficients (ICCs) were calculated per pathologist duo and Bland-Altman plots were constructed. The relation between sTILs and pCR or RCB class was investigated. The ICCs ranged from -0.376 to 0.947 (mean: 0.659), indicating substantial interobserver variability. Nevertheless, high sTILs scores were significantly associated with pCR for 36 participants (90%), and with RCB class for eight participants (20%). Post hoc sTILs cutoffs at 20% and 40% resulted in variable associations with pCR. The sTILs in TNBC with RCB-II and RCB-III were intermediate to those of RCB-0 and RCB-I, with lowest sTILs observed in RCB-I. However, the limited number of RCB-I cases precludes any definite conclusions due to lack of power, and this observation therefore requires further investigation. In conclusion, sTILs are a robust marker for pCR at the group level. However, if sTILs are to be used to guide the NAC scheme for individual patients, the observed interobserver variability might substantially affect the chance of obtaining a pCR. Future studies should determine the 'ideal' sTILs threshold, and attempt to fine-tune the patient selection for sTILs-based de-escalation of NAC regimens. At present, there is insufficient evidence for robust and reproducible sTILs-guided therapeutic decisions.
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Affiliation(s)
- Mieke R. Van Bockstal
- Department of pathology, Cliniques universitaires Saint-Luc Bruxelles, Avenue Hippocrate 10, Woluwé-Saint-Lambert 1200, Belgium
| | - Aline François
- Department of pathology, Cliniques universitaires Saint-Luc Bruxelles, Avenue Hippocrate 10, Woluwé-Saint-Lambert 1200, Belgium
| | - Serdar Altinay
- Department of Pathology, University of Health Sciences, Bakirköy Dr. Sadi Konuk Health Application and Research Center, 34147 Istanbul, Turkey
| | - Laurent Arnould
- Département de Biologie et de Pathologie des Tumeurs, Centre George-François Leclerc, 1 Rue Pr. Marion, 21000 Dijon, France
| | - Maschenka Balkenhol
- Department of Pathology, Radboud University Medical Center, PO Box 9100, 6500, HB Nijmegen, The Netherlands
| | - Glenn Broeckx
- Department of Pathology, University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
| | - Octavio Burguès
- Department of Pathology, Hospital Clínico Universitario de Valencia, Av. De Blasco Ibáñez 17, 46010 València, Valencia, Spain
| | - Cecile Colpaert
- Department of Pathology, AZ Turnhout Campus Sint-Jozef, Steenweg op Merksplas 44, 2300 Turnhout, Belgium
| | | | - Benjamin Dessauvagie
- Division of Pathology and Laboratory Medicine, Medical School, The University of Western Australia, Crawley, WA 6009, Australia,Anatomical Pathology, PathWest Laboratory Medicine WA, Perth, Australia
| | - Valérie Duwel
- Department of pathology, AZ Klina Brasschaat, Augustijnslei 100, 2930 Brasschaat, Belgium
| | - Giuseppe Floris
- Department of Pathology, University Hospitals Leuven, KU Leuven – University of Leuven, Herestraat 49, 3000 Leuven, Belgium,Department of Imaging and Pathology, Laboratory of Translational Cell & Tissue Research, KU Leuven – University of Leuven, Leuven, Belgium
| | - Stephen Fox
- Department of Pathology, Peter MacCallum Cancer Center and the University of Melbourne, Melbourne, Vic 3000, Australia
| | - Clara Gerosa
- Department of Pathology, University of Cagliari, AOU San Giovanni di Dio, Via Ospedale 54, 09124 Cagliari, Italy
| | - Delfyne Hastir
- Institute of Pathology, Lausanne University Hospital, Rue du Bugnon 25, CH-1011 Lausanne, Switzerland
| | - Shabnam Jaffer
- Department of Pathology, Mount Sinai Hospital and Icahn School of Medicine, New York, New York, NY10029 USA
| | | | - Magali Lacroix-Triki
- Department of Pathology, Gustave-Roussy Cancer Campus, 114 Rue Edouard-Vaillant, 94805 Villejuif, France
| | - Andoni Laka
- Department of Pathology, Clinique Notre-Dame de Grâce (CNDG), Chaussée de Nivelles 212, 6041 Gosselies, Belgium
| | - Kathleen Lambein
- Department of Pathology, AZ St Lucas Hospital, Groenebriel 1, 9000 Ghent, Belgium
| | - Gaëtan Marie MacGrogan
- Surgical Pathology Unit, Department of Pathobiology, Institut Bergonié, F-33076 Bordeaux, France
| | - Caterina Marchio
- Department of Medical Sciences, University of Turin, 10126 Torino, Italy,Pathology Unit, FPO-IRCCS, Candiolo Cancer Institute, Candiolo, Italy
| | | | - Sharon Nofech-Mozes
- Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Ontario, ON M4N 3M5, Canada
| | - Dieter Peeters
- Department of Pathology, AZ St Maarten, Liersesteenweg 435, 2800 Mechelen, Belgium,Histopathology, Imaging and Quantification Unit, HistoGeneX, Sint-Bavostraat 78, 2610 Antwerp, Belgium
| | - Alberto Ravarino
- Department of Pathology, University of Cagliari, AOU San Giovanni di Dio, Via Ospedale 54, 09124 Cagliari, Italy
| | - Emily Reisenbichler
- Department of Pathology, Yale School of Medicine, Yale New Haven Hospital, 310 Cedar Street, New Haven, CT06510, United States
| | - Erika Resetkova
- The University of Texas MD Anderson Cancer Center, Houston TX77030, Texas, USA
| | - Souzan Sanati
- Department of Pathology and Lab Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Rm8612, Los Angeles, CA90048, United States
| | - Anne-Marie Schelfhout
- Department of Pathology, Onze-Lieve-Vrouwziekenhuis Aalst, Moorselbaan 164, 9300 Aalst, Belgium
| | - Vera Schelfhout
- Department of Pathology, AZ St Maarten, Liersesteenweg 435, 2800 Mechelen, Belgium
| | - Abeer Shaaban
- Department of Cellular Pathology, Queen Elizabeth Hospital Birmingham, University of Birmingham, Birmingham B15 2GW, United Kingdom
| | - Renata Sinke
- Pathan BV, Kleiweg 500, 3045 PM Rotterdam, The Netherlands
| | - Claudia M Stanciu-Pop
- Department of Pathology, CHU UCL Namur, Site Godinne, Avenue Docteur G. Thérasse 1, 5530 Yvoir, Belgium
| | - Carolien HM van Deurzen
- Department of Pathology, Erasmus Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Koen K Van de Vijver
- Department of Pathology, Ghent University Hospital, C. Heymanslaan 10, 9000 Ghent, Belgium
| | - Anne-Sophie Van Rompuy
- Department of Pathology, University Hospitals Leuven, KU Leuven – University of Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Anne Vincent-Salomon
- Pôle de Médicine Diagnostique & Théranostique, INSERM U934, Institut Curie, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Hannah Wen
- Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065
| | - Serena Wong
- Department of Pathology, Yale School of Medicine, Yale New Haven Hospital, 310 Cedar Street, New Haven, CT06510, United States
| | - Caroline Bouzin
- 2IP IREC Imaging Platform, Institute of Clinical and Experimental Research (IREC), Université catholique de Louvain, Avenue Hippocrate 55, 1200 Brussels, Belgium
| | - Christine Galant
- Department of pathology, Cliniques universitaires Saint-Luc Bruxelles, Avenue Hippocrate 10, Woluwé-Saint-Lambert 1200, Belgium,Institute of Clinical and Experimental Research (IREC), Université catholique de Louvain, Avenue Hippocrate 55, 1200 Brussels, Belgium
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13
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Dedeurwaerdere F, Claes KB, Van Dorpe J, Rottiers I, Van der Meulen J, Breyne J, Swaerts K, Martens G. Comparison of microsatellite instability detection by immunohistochemistry and molecular techniques in colorectal and endometrial cancer. Sci Rep 2021; 11:12880. [PMID: 34145315 PMCID: PMC8213758 DOI: 10.1038/s41598-021-91974-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/20/2021] [Indexed: 02/08/2023] Open
Abstract
DNA mismatch repair deficiency (dMMR) testing is crucial for diagnosing Lynch syndrome and detection of microsatellite unstable (MSI) tumors eligible for immunotherapy. The aim of this study was to compare the relative diagnostic performance of three molecular MSI assays: polymerase chain reaction (PCR), MSI testing by Idylla and next-generation-sequencing (NGS) on 49 tumor samples (28 colorectal and 21 endometrial adenocarcinomas) versus immunohistochemistry (IHC). Discrepancies were investigated by MLH1 methylation analysis and integrated with germline results if available. Overall, the molecular assays achieved equivalent diagnostic performance for MSI detection with area under the ROC curves (AUC) of respectively 0.91 for Idylla and PCR, and 0.93 for NGS. In colorectal cancers with tumor cell percentages ≥ 30% all three molecular assays achieved 100% sensitivity and specificity (AUC = 1) versus IHC. Also, in endometrial cancers, all three molecular assays showed equivalent diagnostic performance, albeit at a clearly lower sensitivity ranging from 58% for Idylla to 75% for NGS, corresponding to negative predictive values from 78 to 86%. PCR, Idylla and NGS show similar diagnostic performance for dMMR detection in colorectal and endometrial cancers. Molecular MSI analysis has lower sensitivity for dMMR detection in endometrial cancer indicating that combined use of both IHC and molecular methods is recommended. Clinical Trial Number/IRB: B1172020000040, Ethical Committee, AZ Delta General Hospital.
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Affiliation(s)
| | - Kathleen Bm Claes
- Center for Medical Genetics, Ghent University Hospital, Gent, Belgium.,Department of Biomolecular Medicine, Ghent University, Gent, Belgium.,Cancer Research Institute Ghent (CRIG), Ghent University, Gent, Belgium
| | - Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, Gent, Belgium.,Cancer Research Institute Ghent (CRIG), Ghent University, Gent, Belgium
| | | | - Joni Van der Meulen
- Center for Medical Genetics, Ghent University Hospital, Gent, Belgium.,Cancer Research Institute Ghent (CRIG), Ghent University, Gent, Belgium.,Molecular Diagnostics, Ghent University Hospital, Gent, Belgium
| | - Joke Breyne
- Department of Laboratory Medicine, Department of Laboratory Medicine, AZ Delta General Hospital, AZ Delta General Hospital, Deltalaan 1, 8800, Roeselare, Belgium
| | - Koen Swaerts
- Department of Laboratory Medicine, Department of Laboratory Medicine, AZ Delta General Hospital, AZ Delta General Hospital, Deltalaan 1, 8800, Roeselare, Belgium
| | - Geert Martens
- Department of Laboratory Medicine, Department of Laboratory Medicine, AZ Delta General Hospital, AZ Delta General Hospital, Deltalaan 1, 8800, Roeselare, Belgium. .,Department of Biomolecular Medicine, Ghent University, Gent, Belgium.
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14
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Raman L, Van der Linden M, De Vriendt C, Van den Broeck B, Muylle K, Deeren D, Dedeurwaerdere F, Verbeke S, Dendooven A, De Grove K, Baert S, Claes K, Menten B, Offner F, Van Dorpe J. Shallow-depth sequencing of cell-free DNA for Hodgkin and diffuse large B-cell lymphoma (differential) diagnosis: a standardized approach with underappreciated potential. Haematologica 2020; 107:211-220. [PMID: 33299235 PMCID: PMC8719079 DOI: 10.3324/haematol.2020.268813] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 11/17/2022] Open
Abstract
Shallow-depth sequencing of cell-free DNA, an inexpensive and standardized approach to obtain molecular information on tumors non-invasively, has been insufficiently explored for the diagnosis of lymphoma and disease follow-up. This study collected 318 samples, including longitudinal liquid and paired solid biopsies, from a prospectively- recruited cohort of 38 Hodgkin lymphoma (HL) and 85 aggressive B-cell non-HL patients, represented by 81 diffuse large B-cell lymphoma (DLBCL) cases. Following sequencing, copy number alterations and viral read fractions were derived and analyzed. At diagnosis, liquid biopsies showed detectable copy number alterations in 84.2% of HL patients (88.6% for classical HL) and 74.1% of DLBCL patients. Of the DLBCL patients, copy number profiles between liquid-solid pairs were highly concordant (r=0.815±0.043); and, compared to tissue, HL liquid biopsies had abnormalities with higher amplitudes (P=0.010). This implies that tumor DNA is more abundant in plasma. Additionally, 39.5% of HL and 13.6% of DLBCL cases had a significantly elevated number of plasma Epstein-Barr virus DNA fragments, achieving a sensitivity of 100% compared to the current standard. A longitudinal analysis determined that, when detectable, copy number patterns were similar across (re)staging moments in refractory or relapsed patients. Further, the overall profile anomaly correlated highly with the total metabolic tumor volume (P<0.001). To conclude, as a proof of principle, we demonstrate that liquid biopsy-derived copy numbers can aid diagnosis: e.g., by differentiating HL from DLBCL, random forest modeling is represented by an area under the receiver operating characteristic curve of 0.967. This application is potentially useful when tissue is difficult to obtain or when biopsies are small and inconclusive.
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Affiliation(s)
- Lennart Raman
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium; Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent
| | - Malaïka Van der Linden
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium; Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent
| | - Ciel De Vriendt
- Department of Clinical Hematology, Ghent University, Ghent University Hospital, Ghent
| | | | | | | | | | - Sofie Verbeke
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent
| | - Amélie Dendooven
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk
| | - Katrien De Grove
- Department of Clinical Hematology, Ghent University, Ghent University Hospital, Ghent
| | - Saskia Baert
- Department of Clinical Hematology, Ghent University, Ghent University Hospital, Ghent
| | - Kathleen Claes
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent
| | - Björn Menten
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University, Ghent University Hospital, Ghent
| | - Fritz Offner
- Department of Clinical Hematology, Ghent University, Ghent University Hospital, Ghent
| | - Jo Van Dorpe
- Department of Pathology, Ghent University, Ghent University Hospital, Ghent.
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15
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Raman L, Van der Linden M, Van der Eecken K, Vermaelen K, Demedts I, Surmont V, Himpe U, Dedeurwaerdere F, Ferdinande L, Lievens Y, Claes K, Menten B, Van Dorpe J. Shallow whole-genome sequencing of plasma cell-free DNA accurately differentiates small from non-small cell lung carcinoma. Genome Med 2020; 12:35. [PMID: 32317009 PMCID: PMC7175544 DOI: 10.1186/s13073-020-00735-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/07/2020] [Indexed: 01/08/2023] Open
Abstract
Background Accurate lung cancer classification is crucial to guide therapeutic decisions. However, histological subtyping by pathologists requires tumor tissue—a necessity that is often intrinsically associated with procedural difficulties. The analysis of circulating tumor DNA present in minimal-invasive blood samples, referred to as liquid biopsies, could therefore emerge as an attractive alternative. Methods Concerning adenocarcinoma, squamous cell carcinoma, and small cell carcinoma, our proof of concept study investigates the potential of liquid biopsy-derived copy number alterations, derived from single-end shallow whole-genome sequencing (coverage 0.1–0.5×), across 51 advanced stage lung cancer patients. Results Genomic abnormality testing reveals anomalies in 86.3% of the liquid biopsies (16/20 for adenocarcinoma, 13/16 for squamous cell, and 15/15 for small cell carcinoma). We demonstrate that copy number profiles from formalin-fixed paraffin-embedded tumor biopsies are well represented by their liquid equivalent. This is especially valid within the small cell carcinoma group, where paired profiles have an average Pearson correlation of 0.86 (95% CI 0.79–0.93). A predictive model trained with public data, derived from 843 tissue biopsies, shows that liquid biopsies exhibit multiple deviations that reflect histological classification. Most notably, distinguishing small from non-small cell lung cancer is characterized by an area under the curve of 0.98 during receiver operating characteristic analysis. Additionally, we investigated how deeper paired-end sequencing, which will eventually become feasible for routine diagnosis, empowers tumor read enrichment by insert size filtering: for all of the 29 resequenced liquid biopsies, the tumor fraction could be increased in silico, thereby “rescuing” three out of five cases with previously undetectable alterations. Conclusions Copy number profiling of cell-free DNA enables histological classification. Since shallow whole-genome sequencing is inexpensive and often fully operational at routine molecular laboratories, this finding has current diagnostic potential, especially for patients with lesions that are difficult to reach.
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Affiliation(s)
- Lennart Raman
- Department of Pathology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium.,Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Malaïka Van der Linden
- Department of Pathology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Kim Van der Eecken
- Department of Pathology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Karim Vermaelen
- Department of Respiratory Medicine, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Ingel Demedts
- Department of Respiratory Medicine, AZ Delta, Deltalaan 1, 8800, Roeselare, Belgium
| | - Veerle Surmont
- Department of Respiratory Medicine, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Ulrike Himpe
- Department of Respiratory Medicine, AZ Delta, Deltalaan 1, 8800, Roeselare, Belgium
| | | | - Liesbeth Ferdinande
- Department of Pathology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Yolande Lievens
- Department of Radiation Oncology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Kathleen Claes
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium.
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16
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Willems E, Smet B, Dedeurwaerdere F, D’Hondt M. Foreign body granuloma reaction following SIRT mimicking peritoneal metastases: a word of caution. Acta Chir Belg 2020; 120:47-49. [PMID: 30092710 DOI: 10.1080/00015458.2018.1494969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Intrahepatic cholangiocarcinoma (iCCA) is the second most common primary liver malignancy with poor survival rates. Surgical resection is the only curative treatment option, yet only a small portion of cases are resectable. In unresectable situations, suggested therapy consists of a systemic chemotherapy regimen with cisplatinum and gemcitabine. Selective internal radiation therapy (SIRT) has been proposed as an alternative treatment option and may lead to downstaging of unresectable iCCA to surgery. We present a case of a female patient diagnosed with an unresectable iCCA treated with SIRT in order to obtain downstaging. Explorative laparoscopy three months later showed multiple peritoneal lesions in the left upper quadrant, mimicking peritoneal metastases. Anatomopathological investigation showed a foreign body granuloma surrounding the SIRT resin particles. These findings have important consequences, as the presence of peritoneal metastases implies a palliative situation. Anatomopathological confirmation of any intra-abdominal lesion mimicking peritoneal metastases should be carried out.
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Affiliation(s)
- Edward Willems
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital, Kortrijk, Belgium
| | - Bart Smet
- Department of Digestive Surgery, Delta Hospital, Roeselare, Belgium
| | | | - Mathieu D’Hondt
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital, Kortrijk, Belgium
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17
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Deprez N, Dedeurwaerdere F, Desomer L, De Wulf D. Hepatobiliary and Pancreatic: Pyoderma gangrenosum of the pancreas successfully treated with infliximab. J Gastroenterol Hepatol 2019; 34:816. [PMID: 30467896 DOI: 10.1111/jgh.14504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 09/30/2018] [Indexed: 12/09/2022]
Affiliation(s)
- N Deprez
- Department of Gastroenterology, Ghent University Hospital, Ghent, Belgium
| | - F Dedeurwaerdere
- Department of Pathology, Academic Hospital Roeselare, Roeselare, Belgium
| | - L Desomer
- Department of Gastroenterology, Academic Hospital Roeselare, Roeselare, Belgium
| | - D De Wulf
- Department of Gastroenterology, Academic Hospital Roeselare, Roeselare, Belgium
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18
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Deeren D, Van Der Linden M, Dedeurwaerdere F, Deleu L, Meert C, Menten B, Van Dorpe J. Circulating cell-free DNA for response evaluation of intravascular lymphoma. Ann Hematol 2019; 98:2021-2023. [PMID: 30955061 DOI: 10.1007/s00277-019-03677-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 03/17/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Dries Deeren
- Department of Hematology, AZ Delta, Wilgenstraat 2, B-8800, Roeselare, Belgium.
| | - Malaïka Van Der Linden
- Department of Pathology, Ghent University Hospital, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | | | - Lien Deleu
- Department of Hematology, AZ Delta, Wilgenstraat 2, B-8800, Roeselare, Belgium
| | - Caressa Meert
- Department of Hematology, AZ Delta, Wilgenstraat 2, B-8800, Roeselare, Belgium
| | - Björn Menten
- Center for Medical Genetics, Ghent University Hospital, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | - Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, C. Heymanslaan 10, B-9000, Ghent, Belgium
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19
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De Zutter A, Maes B, Dedeurwaerdere F. A Multifocal Abdominal Mass in a Renal Transplant Recipient. Gastroenterology 2017; 152:1834-1835. [PMID: 28478150 DOI: 10.1053/j.gastro.2016.12.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 12/02/2022]
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20
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Van Gool S, Vanhauwaert D, Dedeurwaerdere F, Pfister S, Lulei M, Schirrmacher V, Stuecker W. HGG-05. CAN MULTIMODAL IMMUNOTHERAPY REPLACE RADIOCHEMOTHERAPY IN COMPLETELY RESECTED ADULT GBM? Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox083.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Van Dorpe J, Hoorens A, Van Roy N, Dedeurwaerdere F, Creytens D. The challenging differential diagnosis of skin tumours with a rhabdoid phenotype: not all tumours with rhabdoid phenotype belong to the group of SMARCB1-deficient tumours. Histopathology 2015. [PMID: 26216536 DOI: 10.1111/his.12790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - Anne Hoorens
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - Nadine Van Roy
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | | | - David Creytens
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
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22
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Ulenaers M, Dedeurwaerdere F, Christiaens P. Gastric ulceration complicating selective internal radiation therapy of liver metastases. Clin Gastroenterol Hepatol 2010; 8:A18. [PMID: 19835987 DOI: 10.1016/j.cgh.2009.09.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Revised: 09/22/2009] [Accepted: 09/26/2009] [Indexed: 02/07/2023]
Affiliation(s)
- Marijke Ulenaers
- Department of Internal Medicine, Gastroenterology Division, Imelda General Hospital, Bonheiden, Belgium
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23
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24
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Van Meensel B, De Laere E, Dedeurwaerdere F, Vets B, Frans J. Bilateral adrenal masses as the sole clinical key for diagnosing a Histoplasma capsulatum infection. Acta Clin Belg 2007; 62:242-5. [PMID: 17849696 DOI: 10.1179/acb.2007.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
We describe a case of a 52-year-old man presenting with bilateral adrenal masses. A Histoplasma capsulatum infection was diagnosed on the basis of culture, pathological findings, Histoplasma antigen detection and molecular testing. The patient was treated with itraconazole and initially showed a good response. However, after discontinuation of one year of therapy, a relapse was seen and therapy was restarted. This case illustrates that histoplasmosis should be considered in the differential diagnosis of patients presenting with bilateral adrenal enlargement. Of all the diagnostic tests that are available, serology and antigen detection are the only rapid and non-invasive tests. Antigen detection can also be used for further follow-up of the disease.
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Affiliation(s)
- B Van Meensel
- Klinisch laboratorium, Imelda Ziekenhuis, Imeldalaan 9, 2820 Bonheiden, België.
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25
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Dedeurwaerdere F, Giannini C, Sciot R, Rubin BP, Perilongo G, Borghi L, Ballotta ML, Cornips E, Demunter A, Maes B, Dei Tos AP. Primary peripheral PNET/Ewing's sarcoma of the dura: a clinicopathologic entity distinct from central PNET. Mod Pathol 2002; 15:673-8. [PMID: 12065782 DOI: 10.1038/modpathol.3880585] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We describe two cases of peripheral primitive neuroectodermal tumor-Ewing's sarcoma (PNET-ES) arising intracranially in the leptomeninges. Both tumors exhibited a primitive undifferentiated round-cell morphology. Immunohistochemical stains revealed strong membrane expression of CD99 in both cases. A t(11;22)(q24;q12) could be demonstrated with reverse transcriptase-polymerase chain reaction in one case, whereas fluorescence in situ hybridization analysis performed in the second case showed a rearrangement of the EWS gene. The occurrence of PNET-ES at this site is very unusual. Immunophenotypical as well as genetic analysis play a key role in the diagnosis and the distinction from central PNET.
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MESH Headings
- 12E7 Antigen
- Antigens, CD/analysis
- Cell Adhesion Molecules/analysis
- Child
- Chromosome Aberrations
- Chromosomes, Human, Pair 22/genetics
- Diagnosis, Differential
- Dura Mater/chemistry
- Dura Mater/metabolism
- Dura Mater/pathology
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Male
- Meningeal Neoplasms/genetics
- Meningeal Neoplasms/metabolism
- Meningeal Neoplasms/pathology
- Neuroectodermal Tumors, Primitive, Peripheral/genetics
- Neuroectodermal Tumors, Primitive, Peripheral/metabolism
- Neuroectodermal Tumors, Primitive, Peripheral/pathology
- Neurofilament Proteins/analysis
- S100 Proteins/analysis
- Sarcoma, Ewing/genetics
- Sarcoma, Ewing/metabolism
- Sarcoma, Ewing/pathology
- Synaptophysin/analysis
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26
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Dedeurwaerdere F, Van Damme B. Histopathology of the parathyroid glands. Acta Otorhinolaryngol Belg 2002; 55:95-101. [PMID: 11441481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The paper describes the histology of the normal parathyroid gland and the histopathology of parathyroid adenoma, hyperplasia and carcinoma. The possibilities and limitations of intraoperative frozen sections are discussed. Finally the use of immunochemistry and other special studies in parathyroid pathology is mentioned.
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27
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Baert F, Schmit A, D'Haens G, Dedeurwaerdere F, Louis E, Cabooter M, De Vos M, Fontaine F, Naegels S, Schurmans P, Stals H, Geboes K, Rutgeerts P. Budesonide in collagenous colitis: a double-blind placebo-controlled trial with histologic follow-up. Gastroenterology 2002; 122:20-5. [PMID: 11781276 DOI: 10.1053/gast.2002.30295] [Citation(s) in RCA: 214] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
BACKGROUND & AIMS Collagenous colitis (CC) is a well-described entity causing chronic diarrhea and characteristic histologic findings. Several treatment options have been suggested, but no controlled data are available. We conducted a placebo-controlled trial to show the clinical and histologic effects of budesonide in CC. METHODS Twenty-eight patients were randomly assigned to receive placebo (n = 14) or budesonide 9 mg daily (n = 14) for 8 weeks. Patients were evaluated clinically, and blinded biopsy specimens were analyzed from fixed locations at weeks 0 and 8. Clinical response was defined as a decrease of at least 50% in the disease activity score (number of bowel movements in the last 7 days). At week 8, nonresponders received open-label budesonide for the next 8-week period; responders discontinued treatment and were followed up. RESULTS Three patients discontinued the study prematurely. Intention-to-treat analysis showed clinical response in 8 of 14 patients in the budesonide group compared with 3 of 14 responders for placebo (P = 0.05) after 8 weeks of blinded therapy, together with improved stool consistency. Histologically, there was no change in the mean thickness of the collagen band but a significant decrease of the lamina propria infiltrate in the budesonide group (P < 0.001). CONCLUSIONS Budesonide is efficacious in inducing short-term clinical response in CC with significant reduction of the histologic infiltrate in the lamina propria.
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