Novel Molecular Stereotactic Biopsy Procedures Reveal Intratumoral Homogeneity of Loss of Heterozygosity of 1p/19q and TP53 Mutations in World Health Organization Grade II Gliomas

We report a molecular stereotactic biopsy technique that combines histopathologic diagnosis with small sample size-adjusted molecular genetic analysis of low-grade gliomas that are ineligible for tumor resection. Loss of heterozygosity (LOH) of 1p/19q and TP53 mutationswere analyzed in 1-mm tissue s...

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Veröffentlicht in:Journal of neuropathology and experimental neurology 2009-11, Vol.68 (11), p.1219-1228
Hauptverfasser: Thon, Niklas, Eigenbrod, Sabina, Grasbon-Frodl, Eva M, Ruiter, Michael, Mehrkens, Jan H, Kreth, Simone, Tonn, Jörg C, Kretzschmar, Hans A, Kreth, Friedrich W
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container_end_page 1228
container_issue 11
container_start_page 1219
container_title Journal of neuropathology and experimental neurology
container_volume 68
creator Thon, Niklas
Eigenbrod, Sabina
Grasbon-Frodl, Eva M
Ruiter, Michael
Mehrkens, Jan H
Kreth, Simone
Tonn, Jörg C
Kretzschmar, Hans A
Kreth, Friedrich W
description We report a molecular stereotactic biopsy technique that combines histopathologic diagnosis with small sample size-adjusted molecular genetic analysis of low-grade gliomas that are ineligible for tumor resection. Loss of heterozygosity (LOH) of 1p/19q and TP53 mutationswere analyzed in 1-mm tissue samples from 42 World Health Organization grade II gliomas (30 astrocytomas, 8 oligoastrocytomas, 4 oligodendrogliomas) using polymerase chain reaction-based microsatellite and sequence analysis. Alternating histological and molecular genetic evaluation within 1-mm steps at different sites within each tumor was performed to determine reproducibility of the results and the intratumoral distribution of the biomarkers. Multiple serial biopsies (range, 2-5 per tumor) taken from distinct intratumoral areas revealed concordant molecular genetic findings and homogeneous distribution of both biomarkers throughout 41 tumors. Contamination by nonneoplastic tissue could be recognized by corresponding histological evaluation and resulted in discordant LOH findings in 1 tumor. The frequency of LOH 1p/19q and TP53 mutations was consistent with the literature; these genetic alterations were found to be mutually exclusive. There was no biopsy-related morbidity. We conclude that determination of the LOH 1p/19q and TP53 status using this molecular stereotactic biopsy technique is safe and reliable in cases of unresectable gliomas.
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Loss of heterozygosity (LOH) of 1p/19q and TP53 mutationswere analyzed in 1-mm tissue samples from 42 World Health Organization grade II gliomas (30 astrocytomas, 8 oligoastrocytomas, 4 oligodendrogliomas) using polymerase chain reaction-based microsatellite and sequence analysis. Alternating histological and molecular genetic evaluation within 1-mm steps at different sites within each tumor was performed to determine reproducibility of the results and the intratumoral distribution of the biomarkers. Multiple serial biopsies (range, 2-5 per tumor) taken from distinct intratumoral areas revealed concordant molecular genetic findings and homogeneous distribution of both biomarkers throughout 41 tumors. Contamination by nonneoplastic tissue could be recognized by corresponding histological evaluation and resulted in discordant LOH findings in 1 tumor. The frequency of LOH 1p/19q and TP53 mutations was consistent with the literature; these genetic alterations were found to be mutually exclusive. There was no biopsy-related morbidity. We conclude that determination of the LOH 1p/19q and TP53 status using this molecular stereotactic biopsy technique is safe and reliable in cases of unresectable gliomas.</description><identifier>ISSN: 0022-3069</identifier><identifier>EISSN: 1554-6578</identifier><identifier>DOI: 10.1097/NEN.0b013e3181bee1f1</identifier><identifier>PMID: 19816195</identifier><identifier>CODEN: JNENAD</identifier><language>eng</language><publisher>England: American Association of Neuropathologists, Inc</publisher><subject>Adolescent ; Adult ; Aged ; Astrocytoma - genetics ; Astrocytoma - pathology ; Chromosomes, Human, Pair 1 - genetics ; Chromosomes, Human, Pair 19 - genetics ; Female ; Glioma - genetics ; Glioma - pathology ; Humans ; Loss of Heterozygosity - genetics ; Male ; Middle Aged ; Mutation - genetics ; Oligodendroglioma - genetics ; Oligodendroglioma - pathology ; Stereotaxic Techniques ; Tumor Suppressor Protein p53 - genetics ; World Health Organization ; Young Adult</subject><ispartof>Journal of neuropathology and experimental neurology, 2009-11, Vol.68 (11), p.1219-1228</ispartof><rights>2009 American Association of Neuropathologists, Inc</rights><rights>Copyright Lippincott Williams &amp; Wilkins Nov 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4941-f4fb8ec9b6012ad9fbb350178f0a12c03ce13729c2fd0f88586560a317c894583</citedby><cites>FETCH-LOGICAL-c4941-f4fb8ec9b6012ad9fbb350178f0a12c03ce13729c2fd0f88586560a317c894583</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19816195$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Thon, Niklas</creatorcontrib><creatorcontrib>Eigenbrod, Sabina</creatorcontrib><creatorcontrib>Grasbon-Frodl, Eva M</creatorcontrib><creatorcontrib>Ruiter, Michael</creatorcontrib><creatorcontrib>Mehrkens, Jan H</creatorcontrib><creatorcontrib>Kreth, Simone</creatorcontrib><creatorcontrib>Tonn, Jörg C</creatorcontrib><creatorcontrib>Kretzschmar, Hans A</creatorcontrib><creatorcontrib>Kreth, Friedrich W</creatorcontrib><title>Novel Molecular Stereotactic Biopsy Procedures Reveal Intratumoral Homogeneity of Loss of Heterozygosity of 1p/19q and TP53 Mutations in World Health Organization Grade II Gliomas</title><title>Journal of neuropathology and experimental neurology</title><addtitle>J Neuropathol Exp Neurol</addtitle><description>We report a molecular stereotactic biopsy technique that combines histopathologic diagnosis with small sample size-adjusted molecular genetic analysis of low-grade gliomas that are ineligible for tumor resection. 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The frequency of LOH 1p/19q and TP53 mutations was consistent with the literature; these genetic alterations were found to be mutually exclusive. There was no biopsy-related morbidity. 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subjects Adolescent
Adult
Aged
Astrocytoma - genetics
Astrocytoma - pathology
Chromosomes, Human, Pair 1 - genetics
Chromosomes, Human, Pair 19 - genetics
Female
Glioma - genetics
Glioma - pathology
Humans
Loss of Heterozygosity - genetics
Male
Middle Aged
Mutation - genetics
Oligodendroglioma - genetics
Oligodendroglioma - pathology
Stereotaxic Techniques
Tumor Suppressor Protein p53 - genetics
World Health Organization
Young Adult
title Novel Molecular Stereotactic Biopsy Procedures Reveal Intratumoral Homogeneity of Loss of Heterozygosity of 1p/19q and TP53 Mutations in World Health Organization Grade II Gliomas
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