{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["15"],"submitter":["Seifert M"],"pubmed_abstract":["<h4>Background</h4>Astrocytomas are the most common primary brain tumors distinguished into four histological grades. Molecular analyses of individual astrocytoma grades have revealed detailed insights into genetic, transcriptomic and epigenetic alterations. This provides an excellent basis to identify similarities and differences between astrocytoma grades.<h4>Methods</h4>We utilized public omics data of all four astrocytoma grades focusing on pilocytic astrocytomas (PA I), diffuse astrocytomas (AS II), anaplastic astrocytomas (AS III) and glioblastomas (GBM IV) to identify similarities and differences using well-established bioinformatics and systems biology approaches. We further validated the expression and localization of Ang2 involved in angiogenesis using immunohistochemistry.<h4>Re"],"journal":["BMC cancer"],"pagination":["952"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4682229"],"repository":["biostudies-literature"],"pubmed_title":["Comparative transcriptomics reveals similarities and differences between astrocytoma grades."],"pmcid":["PMC4682229"],"pubmed_authors":["Friedrich B","Seifert M","Garbe M","Mittelbronn M","Klink B"],"additional_accession":[]},"is_claimable":false,"name":"Comparative transcriptomics reveals similarities and differences between astrocytoma grades.","description":"<h4>Background</h4>Astrocytomas are the most common primary brain tumors distinguished into four histological grades. Molecular analyses of individual astrocytoma grades have revealed detailed insights into genetic, transcriptomic and epigenetic alterations. This provides an excellent basis to identify similarities and differences between astrocytoma grades.<h4>Methods</h4>We utilized public omics data of all four astrocytoma grades focusing on pilocytic astrocytomas (PA I), diffuse astrocytomas (AS II), anaplastic astrocytomas (AS III) and glioblastomas (GBM IV) to identify similarities and differences using well-established bioinformatics and systems biology approaches. We further validated the expression and localization of Ang2 involved in angiogenesis using immunohistochemistry.<h4>Re","dates":{"release":"2015-01-01T00:00:00Z","publication":"2015 Dec","modification":"2026-06-10T09:23:20.687Z","creation":"2025-05-29T19:18:19.896Z"},"accession":"S-EPMC4682229","cross_references":{"pubmed":["26673168"],"doi":["10.1186/s12885-015-1939-9"]}}