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Choudhary N, Gupta V, Mishra P, Banerjee M. Radiological presentation of transient perivascular inflammation of carotid artery syndrome in a patient with myelodysplasia. Neuroradiol J 2024; 37:126-127. [PMID: 36951500 PMCID: PMC10863575 DOI: 10.1177/19714009231166079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023] Open
Abstract
Transient Perivascular Inflammation of Carotid artery syndrome (TIPIC syndrome) is a non-specific inflammatory thickening of the carotid artery. The exact etiology of this syndrome is poorly understood. We will describe the radiological findings of a rare case of TIPIC syndrome in a patient with myelodysplastic syndrome and discuss the potential pathophysiological mechanisms.
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Affiliation(s)
- Neha Choudhary
- Department of Radiology, Amrita Hospital, Faridabad, India
| | - Vivek Gupta
- Department of Radiology, Amrita Hospital, Faridabad, India
| | - Pravas Mishra
- Department of Hematology/Medical Oncology and BMT, Amrita Hospital, Faridabad, India
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Bayrak AG, Daglar Aday A, Yavuz AS, Nalcaci M, Ozbalak MM, Cefle K, Ozturk S, Palanduz S. Overview of clinical and genetic features of CML patients with variant Philadelphia translocations involving chromosome 7: A case series. Leuk Res 2021; 111:106725. [PMID: 34634595 DOI: 10.1016/j.leukres.2021.106725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/12/2022]
Abstract
Variant Philadelphia (Ph) translocations involving chromosome 7 are rarely seen in Chronic Myeloid Leukemia (CML) patients. It is aimed to contribute new cases to the literature by reviewing the cases in our archive and shed light into the understanding of the role of chromosome 7 in CML. This study was carried out in 237 newly diagnosed CML patients with variant Ph translocations. Among the patients, those with variant Ph translocation involving chromosome 7 were evaluated in terms of clinical and genetic characteristics. Chromosome analysis was performed on 24 and 48 h of bone marrow cultures. FISH analysis was performed with BCR-ABL1 dual color dual fusion translocation probes. BCR-ABL1 transcript levels were analysed by QRT-PCR and results were reported as BCR-ABL1/ABL1 (BCR-ABL1 (IS) %) according to international scale. Four of the patients had variant Ph translocations including chromosome 7. The karyotypes were 46,XX,t(7;9;22)(p13;q34;q11); 46,XX,t(7;9;22)(p21;q34;q11); 46,XX,t(7;9;22)(q22;q34;q11) and 46,XY,t(7;9;22)(q22;q34;q11). The breakpoints demonstrated by cytogenetic analysis were confirmed by FISH analysis. Monitoring by QRT-PCR showed that patients with variant Ph translocation including 7p13 and 7p21 had a dramatic decrease in BCR-ABL1 levels resulting in complete hematological, complete cytogenetic and deep molecular responses. Despite achieving complete hematological, complete cytogenetic response in two patients with variant Philadelphia translocation, including 7q22, no major molecular response was achieved and both patients are still in the warning category. Response to tyrosine kinase inhibitör therapy may be associated with both the variant translocation mechanism and new gene interactions that occur due to the breakpoints of additional chromosomes involved in translocation.
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Affiliation(s)
- Ayse Gul Bayrak
- Division of Medical Genetics, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Aynur Daglar Aday
- Division of Medical Genetics, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey.
| | - Akif Selim Yavuz
- Division of Hematology, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Meliha Nalcaci
- Division of Hematology, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Mustafa Murat Ozbalak
- Division of Hematology, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Kivanc Cefle
- Division of Medical Genetics, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Sukru Ozturk
- Division of Medical Genetics, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Sukru Palanduz
- Division of Medical Genetics, Department of Internal Medicine, Istanbul University Istanbul Faculty of Medicine, Istanbul, Turkey
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Federico C, Owoka T, Ragusa D, Sturiale V, Caponnetto D, Leotta CG, Bruno F, Foster HA, Rigamonti S, Giudici G, Cazzaniga G, Bridger JM, Sisu C, Saccone S, Tosi S. Deletions of Chromosome 7q Affect Nuclear Organization and HLXB9Gene Expression in Hematological Disorders. Cancers (Basel) 2019; 11:cancers11040585. [PMID: 31027247 PMCID: PMC6521283 DOI: 10.3390/cancers11040585] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/03/2019] [Accepted: 04/19/2019] [Indexed: 12/22/2022] Open
Abstract
The radial spatial positioning of individual gene loci within interphase nuclei has been associated with up- and downregulation of their expression. In cancer, the genome organization may become disturbed due to chromosomal abnormalities, such as translocations or deletions, resulting in the repositioning of genes and alteration of gene expression with oncogenic consequences. In this study, we analyzed the nuclear repositioning of HLXB9 (also called MNX1), mapping at 7q36.3, in patients with hematological disorders carrying interstitial deletions of 7q of various extents, with a distal breakpoint in 7q36. We observed that HLXB9 remains at the nuclear periphery, or is repositioned towards the nuclear interior, depending upon the compositional properties of the chromosomal regions involved in the rearrangement. For instance, a proximal breakpoint leading the guanine-cytosine (GC)-poor band 7q21 near 7q36 would bring HLXB9 to the nuclear periphery, whereas breakpoints that join the GC-rich band 7q22 to 7q36 would bring HLXB9 to the nuclear interior. This nuclear repositioning is associated with transcriptional changes, with HLXB9 in the nuclear interior becoming upregulated. Here we report an in cis rearrangement, involving one single chromosome altering gene behavior. Furthermore, we propose a mechanistic model for chromatin reorganization that affects gene expression via the influences of new chromatin neighborhoods.
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Affiliation(s)
- Concetta Federico
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Temitayo Owoka
- Genome Engineering and Maintenance Network, Institute of Environment, Health and Societies, Brunel University London, Kingston Lane UB8 3PH, UK.
| | - Denise Ragusa
- Genome Engineering and Maintenance Network, Institute of Environment, Health and Societies, Brunel University London, Kingston Lane UB8 3PH, UK.
| | - Valentina Sturiale
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Domenica Caponnetto
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Claudia Giovanna Leotta
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Francesca Bruno
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Helen A Foster
- Department of Biological and Environmental Sciences, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK.
- College of Health and Life Science, Brunel University London, Kingston Lane UB8 3PH, UK.
| | - Silvia Rigamonti
- Associazione Italiana Ematologia Oncologia Pediatrica (AIEOP), Centro Ricerca Tettamanti, Pediatric Department, University of Milano-Bicocca, 20900 Monza, Italy.
| | - Giovanni Giudici
- Associazione Italiana Ematologia Oncologia Pediatrica (AIEOP), Centro Ricerca Tettamanti, Pediatric Department, University of Milano-Bicocca, 20900 Monza, Italy.
| | - Giovanni Cazzaniga
- Associazione Italiana Ematologia Oncologia Pediatrica (AIEOP), Centro Ricerca Tettamanti, Pediatric Department, University of Milano-Bicocca, 20900 Monza, Italy.
| | - Joanna M Bridger
- Genome Engineering and Maintenance Network, Institute of Environment, Health and Societies, Brunel University London, Kingston Lane UB8 3PH, UK.
| | - Cristina Sisu
- College of Health and Life Science, Brunel University London, Kingston Lane UB8 3PH, UK.
| | - Salvatore Saccone
- Department of Biological, Geological and Environmental Sciences, University of Catania, via Androne 81, 95124 Catania CT, Italy.
| | - Sabrina Tosi
- Genome Engineering and Maintenance Network, Institute of Environment, Health and Societies, Brunel University London, Kingston Lane UB8 3PH, UK.
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