Telomerase reverse transcriptase promoter mutation– and O6-methylguanine DNA methyltransferase promoter methylation–mediated sensitivity to temozolomide in isocitrate dehydrogenase–wild-type glioblastoma: is there a link?

Benefit from temozolomide (TMZ) chemotherapy in the treatment of isocitrate dehydrogenase (IDH)–wild-type glioblastoma is essentially limited to patients with O6-methylguanine DNA methyltransferase (MGMT) promoter–methylated tumours. Recent studies suggested that telomerase reverse transcriptase (TE...

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Veröffentlicht in:European journal of cancer (1990) 2021-04, Vol.147, p.84-94
Hauptverfasser: Gramatzki, Dorothee, Felsberg, Jörg, Hentschel, Bettina, Wolter, Marietta, Schackert, Gabriele, Westphal, Manfred, Regli, Luca, Thon, Niklas, Tatagiba, Marcos, Wick, Wolfgang, Schlegel, Uwe, Krex, Dietmar, Matschke, Jakob, Roth, Patrick, Suresh, Marian P., Kamp, Marcel A., Rushing, Elisabeth J., Pietsch, Torsten, von Deimling, Andreas, Sabel, Michael, Loeffler, Markus, Weller, Michael, Reifenberger, Guido
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container_issue
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container_title European journal of cancer (1990)
container_volume 147
creator Gramatzki, Dorothee
Felsberg, Jörg
Hentschel, Bettina
Wolter, Marietta
Schackert, Gabriele
Westphal, Manfred
Regli, Luca
Thon, Niklas
Tatagiba, Marcos
Wick, Wolfgang
Schlegel, Uwe
Krex, Dietmar
Matschke, Jakob
Roth, Patrick
Suresh, Marian P.
Kamp, Marcel A.
Rushing, Elisabeth J.
Pietsch, Torsten
von Deimling, Andreas
Sabel, Michael
Loeffler, Markus
Weller, Michael
Reifenberger, Guido
description Benefit from temozolomide (TMZ) chemotherapy in the treatment of isocitrate dehydrogenase (IDH)–wild-type glioblastoma is essentially limited to patients with O6-methylguanine DNA methyltransferase (MGMT) promoter–methylated tumours. Recent studies suggested that telomerase reverse transcriptase (TERT) promoter hotspot mutations may have an impact on the prognostic role of the MGMT status in patients with glioblastoma. MGMT promoter methylation and TERT promoter mutation status were retrospectively assessed in a prospective cohort of patients with IDH–wild-type glioblastoma of the German Glioma Network (GGN) (n = 298) and an independent retrospective cohort from Düsseldorf, Germany, and Zurich, Switzerland (n = 302). In the GGN cohort, but not in the Düsseldorf/Zurich cohort, TERT promoter mutation was moderately associated with inferior outcomes in patients with MGMT promoter–unmethylated tumours (hazard ratio 1.74; 95% confidence interval: 1.07–2.82; p = 0.026). TERT promoter mutations were not associated with better outcomes in patients with MGMT promoter–methylated tumours in either cohort. The two different TERT promoter hotspot mutations (C228T and C250T) were not linked to distinct outcomes. Analysis of two independent cohorts of patients with glioblastoma did not confirm previous data, suggesting that TERT promoter mutations confer an enhanced benefit from TMZ in patients with MGMT promoter–methylated glioblastoma. Thus, diagnostic testing for TERT promoter mutations may not be required for prediction of TMZ sensitivity in patients with IDH–wild-type glioblastoma. •MGMT and TERT status do not interact prognostically in IDH-wild-type glioblastoma.•TERT mutation is not linked to benefit from TMZ in IDH-wildtype glioblastoma.•C228T and C250T TERT promoter-mutant glioblastoma show similar outcome.•TERT status is not required for prognostic stratification in clinical trials.
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Recent studies suggested that telomerase reverse transcriptase (TERT) promoter hotspot mutations may have an impact on the prognostic role of the MGMT status in patients with glioblastoma. MGMT promoter methylation and TERT promoter mutation status were retrospectively assessed in a prospective cohort of patients with IDH–wild-type glioblastoma of the German Glioma Network (GGN) (n = 298) and an independent retrospective cohort from Düsseldorf, Germany, and Zurich, Switzerland (n = 302). In the GGN cohort, but not in the Düsseldorf/Zurich cohort, TERT promoter mutation was moderately associated with inferior outcomes in patients with MGMT promoter–unmethylated tumours (hazard ratio 1.74; 95% confidence interval: 1.07–2.82; p = 0.026). TERT promoter mutations were not associated with better outcomes in patients with MGMT promoter–methylated tumours in either cohort. The two different TERT promoter hotspot mutations (C228T and C250T) were not linked to distinct outcomes. Analysis of two independent cohorts of patients with glioblastoma did not confirm previous data, suggesting that TERT promoter mutations confer an enhanced benefit from TMZ in patients with MGMT promoter–methylated glioblastoma. Thus, diagnostic testing for TERT promoter mutations may not be required for prediction of TMZ sensitivity in patients with IDH–wild-type glioblastoma. •MGMT and TERT status do not interact prognostically in IDH-wild-type glioblastoma.•TERT mutation is not linked to benefit from TMZ in IDH-wildtype glioblastoma.•C228T and C250T TERT promoter-mutant glioblastoma show similar outcome.•TERT status is not required for prognostic stratification in clinical trials.</description><identifier>ISSN: 0959-8049</identifier><identifier>EISSN: 1879-0852</identifier><identifier>DOI: 10.1016/j.ejca.2021.01.014</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Brain cancer ; Chemotherapy ; Confidence intervals ; Dehydrogenase ; Dehydrogenases ; Deoxyribonucleic acid ; DNA ; DNA methylation ; DNA methyltransferase ; Glioblastoma ; Glioma ; IDH ; Isocitrate dehydrogenase ; Methylation ; Methylguanine ; MGMT ; Mutation ; Mutation hot spots ; O6-methylguanine-DNA methyltransferase ; RNA-directed DNA polymerase ; Sensitivity ; Survival ; Telomerase ; Telomerase reverse transcriptase ; Temozolomide ; TERT ; Tumors ; wild-type</subject><ispartof>European journal of cancer (1990), 2021-04, Vol.147, p.84-94</ispartof><rights>2021 The Authors</rights><rights>Copyright Elsevier Science Ltd. 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Analysis of two independent cohorts of patients with glioblastoma did not confirm previous data, suggesting that TERT promoter mutations confer an enhanced benefit from TMZ in patients with MGMT promoter–methylated glioblastoma. 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subjects Brain cancer
Chemotherapy
Confidence intervals
Dehydrogenase
Dehydrogenases
Deoxyribonucleic acid
DNA
DNA methylation
DNA methyltransferase
Glioblastoma
Glioma
IDH
Isocitrate dehydrogenase
Methylation
Methylguanine
MGMT
Mutation
Mutation hot spots
O6-methylguanine-DNA methyltransferase
RNA-directed DNA polymerase
Sensitivity
Survival
Telomerase
Telomerase reverse transcriptase
Temozolomide
TERT
Tumors
wild-type
title Telomerase reverse transcriptase promoter mutation– and O6-methylguanine DNA methyltransferase promoter methylation–mediated sensitivity to temozolomide in isocitrate dehydrogenase–wild-type glioblastoma: is there a link?
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