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Beiersdorf J, Scheungraber C, Wunsch K, Schmitz M, Hansel A, Hoyer H, Gajda M, Greinke C, Runnebaum IB, Dürst M, Backsch C. Combined assessment of 3q26 amplification and promoter methylation in patients with high grade cervical lesions show age specific differences. Genes Chromosomes Cancer 2019; 59:168-177. [PMID: 31631454 DOI: 10.1002/gcc.22818] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/15/2019] [Accepted: 10/16/2019] [Indexed: 12/21/2022] Open
Abstract
A considerable proportion of high grade cervical intraepithelial lesions (CIN2/3) are known to resolve on their own especially among young women. However, since reliable prognostic markers are still lacking, the diagnosis "CIN3" is still an indication for surgery which may result in overtreatment. It is conceivable that a combination of different, ideally independent molecular markers may provide more reliable results. In the present cross-sectional study two established triage markers, 3q26 amplification and a methylation signature, were evaluated in an age-dependent manner. The patient cohort comprised 60 patients with histologically confirmed CIN2/3 in two equally sized age groups (<30 years, ≥30 years). Cervical scrapes were analyzed by interphase fluorescence in situ hybridization for 3q26 amplification and methylation specific PCR (GynTect®) for six different genome regions. Both assays showed a significantly different pattern of test outcome independent of age (P = .001). Moreover, the combination of both assays differed significantly for double positive and double negative cases when comparing the two age groups: In patients <30 years there were clearly less cases with positive methylation signature and amplification of 3q26 as in women ≥30 years (23% vs 63%, Bonferroni adjusted P = .016). Of particular interest is the finding that double negative results were exclusive for the young age group (0% vs 27%, Bonferroni adjusted P = .020). Since regression of CIN2/3 characteristically occurs among young women it is tempting to speculate that a double negative test result could be prognostic for regression of CIN2/3. This will have to be investigated further in a prospective longitudinal intervention study.
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Affiliation(s)
- Josefine Beiersdorf
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Cornelia Scheungraber
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | | | | | | | - Heike Hoyer
- Institute of Medical Statistics, Information Sciences and Documentation, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Mieczyslaw Gajda
- Institute of Pathology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Christiane Greinke
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Ingo B Runnebaum
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Matthias Dürst
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Claudia Backsch
- Department of Gynaecology and Reproductive Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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Eszlinger M, Krogdahl A, Münz S, Rehfeld C, Precht Jensen EM, Ferraz C, Bösenberg E, Drieschner N, Scholz M, Hegedüs L, Paschke R. Impact of molecular screening for point mutations and rearrangements in routine air-dried fine-needle aspiration samples of thyroid nodules. Thyroid 2014; 24:305-13. [PMID: 23837487 DOI: 10.1089/thy.2013.0278] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND The diagnostic limitations of thyroid fine-needle aspiration (FNA), such as the indeterminate category, can be partially overcome by molecular analyses. However, until now, rearrangements have only been detected in fresh FNA material and the number of follicular thyroid carcinomas (FTCs) was rather low in previous studies. We aimed at investigating the impact of point mutations and rearrangement detection in a set of routine air-dried FNA smears with a higher percentage of FTCs. METHODS RNA and DNA was extracted from 310 FNAs (164 indeterminate, 57 malignant, 89 benign) and corresponding formalin-fixed paraffin-embedded tissue (156 follicular adenomas [FAs], 32 FTCs, 44 papillary thyroid carcinomas [PTCs], 9 follicular variant PTCs, and 69 goiters). PAX8/PPARG and RET/PTC rearrangements were detected by qPCR, BRAF and RAS mutations by high-resolution melting PCR and by pyrosequencing. RESULTS Forty-seven mutations were detected in the FNAs: 22 BRAF, 13 NRAS, and 3 HRAS mutations, 8 PAX8/PPARG, and one RET/PTC-rearrangement. While the presence of a BRAF and RET/PTC mutation was associated with cancer in 100% of samples each, the presence of a RAS and PAX8/PPARG mutation was associated with cancer in only 12% and 50% of samples, respectively. In the indeterminate group 4 of 25 carcinomas were identified by molecular FNA screening, which increased the sensitivity from 67% (cytology alone) to 75% (cytology plus molecular screening). CONCLUSION Molecular screening for point mutations and rearrangements is feasible in air-dried FNAs. Although the impact of detecting point mutations and rearrangements in FNAs has most likely been overestimated in previous studies, molecular FNA analyses improve presurgical diagnostics. The detection of BRAF mutations in FNA may improve the choice of surgery and postsurgical treatment. Further data are necessary to elucidate the true impact of detecting RAS and PAX8/PPARG mutations in FNAs. The inclusion of additional rare somatic mutations and miRNA markers might further improve the impact of molecular FNA diagnostics.
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Affiliation(s)
- Markus Eszlinger
- 1 Division of Endocrinology and Nephrology, Statistics and Epidemiology (IMISE), Leipzig Research Center for Civilization Diseases (LIFE); University of Leipzig , Leipzig, Germany
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Klemke M, Drieschner N, Laabs A, Rippe V, Belge G, Bullerdiek J, Sendt W. On the prevalence of the PAX8-PPARG fusion resulting from the chromosomal translocation t(2;3)(q13;p25) in adenomas of the thyroid. Cancer Genet 2011; 204:334-9. [PMID: 21763631 DOI: 10.1016/j.cancergen.2011.05.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 04/28/2011] [Accepted: 05/03/2011] [Indexed: 11/16/2022]
Abstract
The chromosomal translocation t(2;3)(q13;p25) characterizes a subgroup of tumors originating from the thyroid follicular epithelium and was initially discovered in a few cases of adenomas. Later, a fusion of the genes PAX8 and PPARG resulting from this translocation was frequently observed in follicular carcinomas and considered as a marker of follicular thyroid cancer. According to subsequent studies, however, this rearrangement is not confined to carcinomas but also occurs in adenomas, with considerably varying frequencies. Only five cases of thyroid adenomas with this translocation detected by conventional cytogenetics have been documented. In contrast, studies using reverse-transcription polymerase chain reaction (RT-PCR) detected fusion transcripts resulting from that translocation in an average of 8.2% of adenomas. The aim of this study was to determine the frequency of the PAX8-PPARG fusion in follicular adenomas and to use the HMGA2 mRNA level of such tumors as an indicator of malignancy. In cytogenetic studies of 192 follicular adenomas, the t(2;3)(q13;p25) has been identified in only two cases described herein. Histopathology revealed no evidence of malignancy in either case, and, concordantly, HMGA2 mRNA levels were not elevated. In summary, the fusion is a rare event in follicular adenomas and its prevalence may be overestimated in many RT-PCR-based studies.
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Affiliation(s)
- Markus Klemke
- Center for Human Genetics, University of Bremen, Germany
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Drieschner N, Rippe V, Laabs A, Dittberner L, Nimzyk R, Junker K, Rommel B, Kiefer Y, Belge G, Bullerdiek J, Sendt W. Interphase fluorescence in situ hybridization analysis detects a much higher rate of thyroid tumors with clonal cytogenetic deviations of the main cytogenetic subgroups than conventional cytogenetics. Cancer Genet 2011; 204:366-74. [DOI: 10.1016/j.cancergen.2011.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 03/22/2011] [Accepted: 03/31/2011] [Indexed: 11/29/2022]
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Moskovszky L, Szuhai K, Krenács T, Hogendoorn PCW, Szendrői M, Benassi MS, Kopper L, Füle T, Sápi Z. Genomic instability in giant cell tumor of bone. A study of 52 cases using DNA ploidy, relocalization FISH, and array-CGH analysis. Genes Chromosomes Cancer 2009; 48:468-79. [DOI: 10.1002/gcc.20656] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Blandin AT, Mühlematter D, Bougeon S, Gogniat C, Porter S, Beyer V, Parlier V, Beckmann JS, van Melle G, Jotterand M. Automated four-color interphase fluorescence in situ hybridization approach for the simultaneous detection of specific aneuploidies of diagnostic and prognostic significance in high hyperdiploid acute lymphoblastic leukemia. ACTA ACUST UNITED AC 2008; 186:69-77. [PMID: 18940469 DOI: 10.1016/j.cancergencyto.2008.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 06/12/2008] [Accepted: 06/16/2008] [Indexed: 10/21/2022]
Abstract
In high hyperdiploid acute lymphoblastic leukemia (ALL), the concurrence of specific trisomies confers a more favorable outcome than hyperdiploidy alone. Interphase fluorescence in situ hybridization (FISH) complements conventional cytogenetics (CC) through its sensitivity and ability to detect chromosome aberrations in nondividing cells. To overcome the limits of manual I-FISH, we developed an automated four-color I-FISH approach and assessed its ability to detect concurrent aneuploidies in ALL. I-FISH was performed using centromeric probes for chromosomes 4, 6, 10, and 17. Parameters established for nucleus selection and signal detection were evaluated. Cutoff values were determined. Combinations of aneuploidies were considered relevant when each aneuploidy was individually significant. Results obtained in 10 patient samples were compared with those obtained with CC. Various combinations of aneuploidies were identified. All clones detected by CC were observed also by I-FISH, and I-FISH revealed numerous additional abnormal clones in all patients, ranging from < or =1% to 31.6% of cells analyzed. We conclude that four-color automated I-FISH permits the identification of concurrent aneuploidies of potential prognostic significance. Large numbers of cells can be analyzed rapidly. The large number of nuclei scored revealed a high level of chromosome variability both at diagnosis and relapse, the prognostic significance of which is of considerable clinical interest and merits further evaluation.
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Affiliation(s)
- Anna Talamo Blandin
- Cancer Cytogenetics Unit, Medical Genetics Service, University Hospital and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
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Beyer V, Mühlematter D, Parlier V, Cabrol C, Bougeon-Mamin S, Solenthaler M, Tobler A, Pugin P, Gregor M, Hitz F, Hess U, Chapuis B, Laurencet F, Schanz U, Schmidt PM, van Melle G, Jotterand M. Polysomy 8 defines a clinico-cytogenetic entity representing a subset of myeloid hematologic malignancies associated with a poor prognosis: report on a cohort of 12 patients and review of 105 published cases. ACTA ACUST UNITED AC 2005; 160:97-119. [PMID: 15993266 DOI: 10.1016/j.cancergencyto.2004.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2004] [Revised: 11/16/2004] [Accepted: 12/10/2004] [Indexed: 01/14/2023]
Abstract
Tetrasomy, pentasomy, and hexasomy 8 (polysomy 8) are relatively rare compared to trisomy 8. Here we report on a series of 12 patients with acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), or myeloproliferative disorder (MPD) associated with polysomy 8 as detected by conventional cytogenetics and fluorescence in situ hybridization (FISH). In an attempt to better characterize the clinical and hematological profile of this cytogenetic entity, our data were combined with those of 105 published patients. Tetrasomy 8 was the most common presentation of polysomy 8. In 60.7% of patients, polysomy 8 occurred as part of complex changes (16.2% with 11q23 rearrangements). No cryptic MLL rearrangements were found in cases in which polysomy 8 was the only karyotypic change. Our study demonstrates the existence of a polysomy 8 syndrome, which represents a subtype of AML, MDS, and MPD characterized by a high incidence of secondary diseases, myelomonocytic or monocytic involvement in AML and poor overall survival (6 months). Age significantly reduced median survival, but associated cytogenetic abnormalities did not modify it. Cytogenetic results further demonstrate an in vitro preferential growth of the cells with a high level of aneuploidy suggesting a selective advantage for polysomy 8 cells.
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Affiliation(s)
- Valérie Beyer
- Service de Génétique Médicale, Centre Hospitalier Universitaire Vaudois, Lausanne CH-1011, Switzerland
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Tan LHC, Do E, Tan SY, Chong SM, Koay ESC. Multi-lineage interrogation of the performance characteristics of a split-signal fluorescence in situ hybridization probe for anaplastic lymphoma kinase gene rearrangements: a study of 101 cases characterized by immunohistomorphology on fixed archival tissue. ACTA ACUST UNITED AC 2005; 8:213-29. [PMID: 15887977 DOI: 10.1007/bf03260066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Fluorescence in situ hybridization (FISH) can identify chromosomal translocations on fixed archival tissue, but studies cross-validating the utility of FISH on lesions of different cell lineages that harbor similar translocations (e.g. those involving anaplastic lymphoma kinase [ALK]) have not been published. AIM Our objective was to define the diagnostic utility, performance characteristics, and limitations of a commercially available, split-signal, FISH probe for ALK gene rearrangements on fixed, archived tissue from lesions of diverse cell lineage. STUDY DESIGN The sensitivity, specificity, and positive and negative predictive values of the Vysis ALK FISH probe were compared with those of the ALK-1 antibody (Dako) in a series of 101 cases, comprising 43 hematolymphoid neoplasms, 4 reactive lymphoid controls, 50 non-hematolymphoid (including neuroectodermal, epithelial, myofibroblastic, and germ cell) lesions, and 4 early-trimester aborted fetuses that served as neuroblastic controls. METHODS The study involved a predominantly (72%) Singaporean Chinese population aged between 9 months and 88 years (excluding the aborted fetal controls). All cases were reviewed both histologically and immunohistochemically with a wide panel of antibodies using the standard protocols in order to diagnose them according to the latest WHO classification systems. A positive cut-off value was determined, both by comparison with diagnostic categories with and without ALK translocations, as well as with negative controls. RESULTS The ALK FISH probe suffered a 33% non-informative rate, but in informative cases it showed 94% concordance with the ALK-1 immunostain. A minimum cut-off value of 5 in 200 informative cells was adopted to make a positive call in each case. Of the ALK-1 immunoreactive lesions, nine lymphomas were concordantly ALK translocation-positive but one vesical inflammatory myofibroblastic tumor was discordantly FISH-negative. Among the ALK-1-immunonegative lesions, one case each of anaplastic lymphoma and pulmonary mycobacterial spindle cell pseudotumor were discordantly ALK FISH-positive, while a case each of intestinal myeloblastic tumor and ganglioglioma showed initial--but not reproducible--positive FISH readings. The remaining cases were concordantly negative. DISCUSSION The discrepancies between ALK FISH results and well-established immunomorphological parameters indicate that interpretation is not always straightforward. Notably, the derivation of threshold cut-off values for positive calls on FISH assays has seldom been addressed in the literature, and has raised issues in interpreting cases with borderline positivity in this study. The factors that may influence such cut-off values are extensively reviewed. CONCLUSIONS We propose the term 'conditional threshold positivity' to encourage the adoption of different cut-off values for making positive calls in lesions of different origin.
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Beyer V, Castagné C, Mühlematter D, Parlier V, Gmür J, Hess U, Kovacsovics T, Meyer-Monard S, Tichelli A, Tobler A, Jacky E, Schanz U, Bargetzi M, Hagemeijer A, de Witte T, van Melle G, Jotterand M. Systematic screening at diagnosis of −5/del(5)(q31), −7, or chromosome 8 aneuploidy by interphase fluorescence in situ hybridization in 110 acute myelocytic leukemia and high-risk myelodysplastic syndrome patients: concordances and discrepancies with conventional cytogenetics. ACTA ACUST UNITED AC 2004; 152:29-41. [PMID: 15193439 DOI: 10.1016/j.cancergencyto.2003.10.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2003] [Accepted: 10/03/2003] [Indexed: 10/26/2022]
Abstract
To assess the contribution of interphase fluorescence in situ hybridization (I-FISH) toward the detection of recurring unbalanced chromosomal anomalies at diagnosis, a systematic screening of -5/del(5)(q31), -7, and chromosome 8 aneuploidy was performed on 110 patients with acute myelocytic leukemia or high-risk myelodysplastic syndrome. We searched for monosomy 5/del(5q) by one-color I-FISH with a probe specific for the 5q31 region and for -7/8 by dual-color I-FISH with centromeric probes for chromosomes 7 and 8. Discrepancies between conventional cytogenetics (CC) and I-FISH were observed in 8 of the 110 patients (7.3%). For -5/del(5)(q31), a discordance was observed in two patients with complex abnormalities involving chromosome 5. Whereas no discordance was observed for -7, I-FISH detected a trisomy 7 unnoticed by CC in two cases. In six patients, I-FISH revealed a chromosome 8 aneuploidy not detected by CC. Our results illustrate that, when using this specific set of probes, I-FISH is of special interest for the detection of minor clones with chromosome 8 aneuploidy, breakpoint assessment, and sequence identification (markers). Also, to avoid misinterpretations, I-FISH should not be used alone at disease presentation, particularly in cases complex changes that have clearly established prognostic significance.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aneuploidy
- Chromosome Deletion
- Chromosomes, Human, Pair 5/genetics
- Chromosomes, Human, Pair 7/genetics
- Chromosomes, Human, Pair 8/genetics
- Cytogenetic Analysis
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Interphase
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/genetics
- Male
- Middle Aged
- Myelodysplastic Syndromes/diagnosis
- Myelodysplastic Syndromes/genetics
- Trisomy
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Affiliation(s)
- Valérie Beyer
- Unité de cytogénétique du cancer, Service de génétique médicale, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne CH-1011, Switzerland
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Tan LHC, Do E, Tan SY, Chong SM, Koay ESC. Multi-Lineage Interrogation of the Performance Characteristics of a Split-Signal Fluorescence In Situ Hybridization Probe for Anaplastic Lymphoma Kinase Gene Rearrangements. ACTA ACUST UNITED AC 2004. [DOI: 10.2165/00066982-200408040-00003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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