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- Publisher Website: 10.1016/S0046-8177(97)90149-0
- Scopus: eid_2-s2.0-0030839886
- PMID: 9224744
- WOS: WOS:A1997XL66100005
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Article: Loss of heterozygosity of chromosome 14q in low- and high-grade meningiomas
Title | Loss of heterozygosity of chromosome 14q in low- and high-grade meningiomas |
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Authors | |
Keywords | Chromosome 14 Loss of heterozygosity Meningioma |
Issue Date | 1997 |
Citation | Human Pathology, 1997, v. 28, n. 7, p. 779-785 How to Cite? |
Abstract | Abnormalities of chromosome 22q have been well studied as a major molecular genetic event in meningiomas. Chromosome 14q loss has also been shown to be a common phenomenon. However, only a few studies have reported molecular genetic changes of this chromosome in meningioma. In this study, we examined 41 sporadic meningiomas of different histological subtypes and grades with 15 polymorphic microsatellite markers covering a wide region on chromosome 14q. Overall, 37% (15 of 41) of cases showed loss of heterozygosity for one or more allelic markers. Thirty percent (10 of 33) of benign tumors showed allelic losses, whereas 62.5% (5 of 8) of high-grade meningiomas showed loss of heterozygosity. There were altogether eight cases of partial deletions and seven cases of probable monosomy of 14q. Allelic losses of 14q were also commonly seen in recurrent tumors (3 of 3, 100%), parasagittal tumors (4 of 7, 57%), and tumors with transitional subtype (7 of 14, 50%). Among the tumors with allelic losses of 14q, all except one concurrently showed loss of heterozygosity for markers on 22q by our previous study. Of the eight cases with partial deletions, one showed losses on 14q11.1-31, two showed deletions on 14q24.3-31, three showed losses at 14q32.1-32.2, and the remaining two showed deletions at 14q24.3-32.2. We therefore defined two cluster regions of deletion on chromosome 14q: 14q24.3- 31 and 14q32.1-32.2. Our studies suggested that more than one tumor suppressor gene(s) residing on distinct regions of chromosome 14q are important in the development and atypical or anaplastic changes in meningiomas. |
Persistent Identifier | http://hdl.handle.net/10722/325004 |
ISSN | 2021 Impact Factor: 3.526 2020 SCImago Journal Rankings: 1.213 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Tse, Jenny Y.M. | - |
dc.contributor.author | Ng, Ho Keung | - |
dc.contributor.author | Lau, Kin Mang | - |
dc.contributor.author | Lo, Kwok Wai | - |
dc.contributor.author | Poon, Wai Sang | - |
dc.contributor.author | Huang, Dolly P. | - |
dc.date.accessioned | 2023-02-27T07:28:56Z | - |
dc.date.available | 2023-02-27T07:28:56Z | - |
dc.date.issued | 1997 | - |
dc.identifier.citation | Human Pathology, 1997, v. 28, n. 7, p. 779-785 | - |
dc.identifier.issn | 0046-8177 | - |
dc.identifier.uri | http://hdl.handle.net/10722/325004 | - |
dc.description.abstract | Abnormalities of chromosome 22q have been well studied as a major molecular genetic event in meningiomas. Chromosome 14q loss has also been shown to be a common phenomenon. However, only a few studies have reported molecular genetic changes of this chromosome in meningioma. In this study, we examined 41 sporadic meningiomas of different histological subtypes and grades with 15 polymorphic microsatellite markers covering a wide region on chromosome 14q. Overall, 37% (15 of 41) of cases showed loss of heterozygosity for one or more allelic markers. Thirty percent (10 of 33) of benign tumors showed allelic losses, whereas 62.5% (5 of 8) of high-grade meningiomas showed loss of heterozygosity. There were altogether eight cases of partial deletions and seven cases of probable monosomy of 14q. Allelic losses of 14q were also commonly seen in recurrent tumors (3 of 3, 100%), parasagittal tumors (4 of 7, 57%), and tumors with transitional subtype (7 of 14, 50%). Among the tumors with allelic losses of 14q, all except one concurrently showed loss of heterozygosity for markers on 22q by our previous study. Of the eight cases with partial deletions, one showed losses on 14q11.1-31, two showed deletions on 14q24.3-31, three showed losses at 14q32.1-32.2, and the remaining two showed deletions at 14q24.3-32.2. We therefore defined two cluster regions of deletion on chromosome 14q: 14q24.3- 31 and 14q32.1-32.2. Our studies suggested that more than one tumor suppressor gene(s) residing on distinct regions of chromosome 14q are important in the development and atypical or anaplastic changes in meningiomas. | - |
dc.language | eng | - |
dc.relation.ispartof | Human Pathology | - |
dc.subject | Chromosome 14 | - |
dc.subject | Loss of heterozygosity | - |
dc.subject | Meningioma | - |
dc.title | Loss of heterozygosity of chromosome 14q in low- and high-grade meningiomas | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S0046-8177(97)90149-0 | - |
dc.identifier.pmid | 9224744 | - |
dc.identifier.scopus | eid_2-s2.0-0030839886 | - |
dc.identifier.volume | 28 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | 779 | - |
dc.identifier.epage | 785 | - |
dc.identifier.isi | WOS:A1997XL66100005 | - |