MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma
Background: Neuroblastoma is the most common extracranial solid tumor in children. MYCN gene amplification (MNA) is an independent prognostic factor for rapid tumor progression and poor prognosis, regardless of age and clinical stage. Gain of the MYCN gene locus on the short arm of chromosome 2 can...
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| Format: | Article |
| Language: | English |
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Shiraz University of Medical Sciences
2024-01-01
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| Series: | Middle East Journal of Cancer |
| Subjects: | |
| Online Access: | https://mejc.sums.ac.ir/article_49334_dc31e55e123b9b1ca84e030605b3a92a.pdf |
| _version_ | 1797376588409470976 |
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| author | Mahdi Shahriari Akbar Safaei Parvaneh Davoudi Bozorgmehr Hedayati |
| author_facet | Mahdi Shahriari Akbar Safaei Parvaneh Davoudi Bozorgmehr Hedayati |
| author_sort | Mahdi Shahriari |
| collection | DOAJ |
| description | Background: Neuroblastoma is the most common extracranial solid tumor in children. MYCN gene amplification (MNA) is an independent prognostic factor for rapid tumor progression and poor prognosis, regardless of age and clinical stage. Gain of the MYCN gene locus on the short arm of chromosome 2 can also be found in neuroblastoma.Method: In this retrospective descriptive analysis of genetic alterations in neuroblastoma tumor samples, both before and after standard chemotherapy, we examined the MYCN gene copy number status in 20 neuroblastic tumor samples using the fluorescence in situ hybridization (FISH) method. We also evaluated its relationship with clinical variables and tumor maturation after standard chemotherapy treatment. Additionally, we compared disease outcomes among different MYCN copy number categories.Results: Among the tumor samples, four (25%) exhibited increased MYCN copy numbers, 20% showed MYCN amplification, and 5% displayed MYCN gain. We observed decreased survival rates in advanced stages of neuroblastoma. Furthermore, in male patients, we noted an association between increased MYCN copy number and metastatic tumors.Conclusion: We found that increased MYCN copy number is moderately associated with an immature phenotype and correlated with lower event-free survival. However, we did not detect a statistically significant difference. |
| first_indexed | 2024-03-08T19:40:43Z |
| format | Article |
| id | doaj.art-bb517e06705c4e0db880380d6e21f8fe |
| institution | Directory Open Access Journal |
| issn | 2008-6709 2008-6687 |
| language | English |
| last_indexed | 2024-03-08T19:40:43Z |
| publishDate | 2024-01-01 |
| publisher | Shiraz University of Medical Sciences |
| record_format | Article |
| series | Middle East Journal of Cancer |
| spelling | doaj.art-bb517e06705c4e0db880380d6e21f8fe2023-12-25T06:31:51ZengShiraz University of Medical SciencesMiddle East Journal of Cancer2008-67092008-66872024-01-0115181410.30476/mejc.2023.96601.182749334MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood NeuroblastomaMahdi Shahriari0Akbar Safaei1Parvaneh Davoudi2Bozorgmehr Hedayati3Department of Pediatrics, Hematology-Oncology Branch, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IranDepartment of Pathology, Molecular Pathology and Cytogenetic Branch, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IranDepartment of Pathology, Molecular Pathology and Cytogenetic Branch, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IranDepartment of Pediatrics, Hematology-Oncology Branch, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IranBackground: Neuroblastoma is the most common extracranial solid tumor in children. MYCN gene amplification (MNA) is an independent prognostic factor for rapid tumor progression and poor prognosis, regardless of age and clinical stage. Gain of the MYCN gene locus on the short arm of chromosome 2 can also be found in neuroblastoma.Method: In this retrospective descriptive analysis of genetic alterations in neuroblastoma tumor samples, both before and after standard chemotherapy, we examined the MYCN gene copy number status in 20 neuroblastic tumor samples using the fluorescence in situ hybridization (FISH) method. We also evaluated its relationship with clinical variables and tumor maturation after standard chemotherapy treatment. Additionally, we compared disease outcomes among different MYCN copy number categories.Results: Among the tumor samples, four (25%) exhibited increased MYCN copy numbers, 20% showed MYCN amplification, and 5% displayed MYCN gain. We observed decreased survival rates in advanced stages of neuroblastoma. Furthermore, in male patients, we noted an association between increased MYCN copy number and metastatic tumors.Conclusion: We found that increased MYCN copy number is moderately associated with an immature phenotype and correlated with lower event-free survival. However, we did not detect a statistically significant difference.https://mejc.sums.ac.ir/article_49334_dc31e55e123b9b1ca84e030605b3a92a.pdfneuroblastomamycn amplificationchemotherapyrefractoryprogression-free survival |
| spellingShingle | Mahdi Shahriari Akbar Safaei Parvaneh Davoudi Bozorgmehr Hedayati MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma Middle East Journal of Cancer neuroblastoma mycn amplification chemotherapy refractory progression-free survival |
| title | MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma |
| title_full | MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma |
| title_fullStr | MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma |
| title_full_unstemmed | MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma |
| title_short | MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma |
| title_sort | mycn gene copy number status detected by fish method and its correlation with outcome and clinicopathological variables in childhood neuroblastoma |
| topic | neuroblastoma mycn amplification chemotherapy refractory progression-free survival |
| url | https://mejc.sums.ac.ir/article_49334_dc31e55e123b9b1ca84e030605b3a92a.pdf |
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