Abstract
According to reported cytogenetic studies, there is a significant association between chromosomal aberrations and aggressiveness in meningiomas. With the method of restriction fragment length polymorphism analysis (RFLP), we examined tumor specific LOH on chromosome 17p and 22q in 30 cases of intracranial meningiomas. There were eight cases of meningiomas with aggressive characteristics, such as invasive meningioma, malignant meningioma, hemangiopericytic meningioma, and multiple meningiomas with central neurofibromatosis. Twenty-five of 30 cases (83%) were constitutionally heterozygous for at least one of the chromosome 22q DNA markers and sixteen of 25 informative cases (64%) displayed loss of heterozygosity (LOH). All of the 8 informative cases (100%) of meningiomas with aggressive characteristics, showed LOH on chromosome 22q whereas non-aggressive cases revealed LOH in eight of 17 informative cases (47%). At the loci on chromosome 17p, only two cases of malignant meningionas showed LOH. Our results suggest that the inactivations of putative tumor suppressor genes on chromosome 22q and 17p may correlate with aggressiveness and malignant transformation of meningiomas.
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Kim, JH., Lee, SH., Rhee, CH. et al. Loss of heterozygosity on chromosome 22q and 17p correlates with aggressiveness of meningiomas. J Neurooncol 40, 101–106 (1998). https://doi.org/10.1023/A:1006110812240
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DOI: https://doi.org/10.1023/A:1006110812240