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- W1968657047 abstract "Medulloblastoma is a malignant invasive embryonal tumor, occurring in children mainly. It is rare in adults (<1% of adult brain tumors), and so comprehensive cytogenetic and molecular biological data on adult medulloblastomas are very limited. Conventional therapies provide disappointing long-term disease control, and new therapeutic options are being tested. We performed comprehensive cytogenetic analyses of an adult medulloblastoma, WHO grade IV, using trypsin-Giemsa staining (GTG-banding), multicolor fluorescence in situ hybridization (M-FISH), and locus-specific FISH, complemented by molecular karyotyping using high-density single nucleotide polymorphism (SNP) arrays. GTG-banding of 25 metaphases revealed 31 structural chromosomal aberrations, predominantly located on chromosomes 4q, 9q, 10q, 11p, and 20q, which were confirmed by M-FISH. Two novel, so far not described translocations were found: t(4;11)(q25;p15) and t(9;20)(p23;p12). GTG-banding, locus-specific FISH, and M-FISH detected numerical changes of chromosomes 8, 14, 18, 19, 20, 21, and 22. Molecular karyotyping by SNP array confirmed chromosomal changes −2p, −10q, −16q, and −Xq and revealed de novo partial uniparental disomy 1q and 9q. Applying an upcoming therapeutic approach, we found that primary medulloblastoma cells were resistant to TRAIL, a novel anticancer cytokine, but could be efficiently sensitized by cotreatment with the proteasome inhibitor bortezomib. Bortezomib–TRAIL cotreatment may serve as a powerful therapeutic option for medulloblastoma patients." @default.
- W1968657047 created "2016-06-24" @default.
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- W1968657047 date "2007-10-01" @default.
- W1968657047 modified "2023-09-23" @default.
- W1968657047 title "Cytogenetic and molecular biological characterization of an adult medulloblastoma" @default.
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- W1968657047 doi "https://doi.org/10.1016/j.cancergencyto.2007.06.005" @default.
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