Association of MGMT Gene Promoter Methylation with Clinicopathological Parameters in Patients with Wild-type IDH Glioblastoma

Moonsik Kim; Jihwan Yoo; Jong Hee Chang; Se Hoon Kim

doi:10.21873/anticanres.15490

Association of MGMT Gene Promoter Methylation with Clinicopathological Parameters in Patients with Wild-type IDH Glioblastoma

Moonsik Kim, Jihwan Yoo, Jong Hee Chang, Se Hoon Kim

Department of Pathology

Research output: Contribution to journal › Article › peer-review

Abstract

Background: The methylation status of the O⁶methylguanine-DNA methyltransferase (MGMT) promoter plays a key role in response to temozolomide chemotherapy and disease prognosis in patients with wild-type isocitrate dehydrogenase (IDH) glioblastoma (GBM). Patients and Methods: The MGMT promoter methylation status and its association with clinicopathological parameters were retrospectively analysed in a cohort of 316 patients with GBM with wild-type IDH. Results: MGMT methylation was significantly associated with ATRX chromatin remodeler (ATRX) loss and completion of the standard Stupp protocol. The median durations of overall and progression-free survival for the unmethylated, low-methylated (10-39%), and hypermethylated (≥40%) groups were 15, 23, and 30 months and 11, 18, and 21 months, respectively. However, the improvement in the survival of the hypermethylated group was not statistically significant. Conclusion: We suggest a possible association between MGMT methylation status and ATRX mutations in GBM with wild-type IDH.

Original language	English
Pages (from-to)	335-341
Number of pages	7
Journal	Anticancer research
Volume	42
Issue number	1
DOIs	https://doi.org/10.21873/anticanres.15490
Publication status	Published - 2022 Jan

Bibliographical note

Funding Information:
Se Hoon Kim was supported by grants from the Brain Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (Grant No. 2016M3C7A1913844). The funding source had no role in the design, practice, or analysis of this study.

Publisher Copyright:
© 2022 International Institute of Anticancer Research. All rights reserved.

All Science Journal Classification (ASJC) codes

Oncology
Cancer Research

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10.21873/anticanres.15490

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title = "Association of MGMT Gene Promoter Methylation with Clinicopathological Parameters in Patients with Wild-type IDH Glioblastoma",

abstract = "Background: The methylation status of the O6methylguanine-DNA methyltransferase (MGMT) promoter plays a key role in response to temozolomide chemotherapy and disease prognosis in patients with wild-type isocitrate dehydrogenase (IDH) glioblastoma (GBM). Patients and Methods: The MGMT promoter methylation status and its association with clinicopathological parameters were retrospectively analysed in a cohort of 316 patients with GBM with wild-type IDH. Results: MGMT methylation was significantly associated with ATRX chromatin remodeler (ATRX) loss and completion of the standard Stupp protocol. The median durations of overall and progression-free survival for the unmethylated, low-methylated (10-39%), and hypermethylated (≥40%) groups were 15, 23, and 30 months and 11, 18, and 21 months, respectively. However, the improvement in the survival of the hypermethylated group was not statistically significant. Conclusion: We suggest a possible association between MGMT methylation status and ATRX mutations in GBM with wild-type IDH.",

author = "Moonsik Kim and Jihwan Yoo and Chang, {Jong Hee} and Kim, {Se Hoon}",

note = "Funding Information: Se Hoon Kim was supported by grants from the Brain Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (Grant No. 2016M3C7A1913844). The funding source had no role in the design, practice, or analysis of this study. Publisher Copyright: {\textcopyright} 2022 International Institute of Anticancer Research. All rights reserved.",

year = "2022",

month = jan,

doi = "10.21873/anticanres.15490",

language = "English",

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AU - Kim, Se Hoon

N1 - Funding Information: Se Hoon Kim was supported by grants from the Brain Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (Grant No. 2016M3C7A1913844). The funding source had no role in the design, practice, or analysis of this study. Publisher Copyright: © 2022 International Institute of Anticancer Research. All rights reserved.

PY - 2022/1

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N2 - Background: The methylation status of the O6methylguanine-DNA methyltransferase (MGMT) promoter plays a key role in response to temozolomide chemotherapy and disease prognosis in patients with wild-type isocitrate dehydrogenase (IDH) glioblastoma (GBM). Patients and Methods: The MGMT promoter methylation status and its association with clinicopathological parameters were retrospectively analysed in a cohort of 316 patients with GBM with wild-type IDH. Results: MGMT methylation was significantly associated with ATRX chromatin remodeler (ATRX) loss and completion of the standard Stupp protocol. The median durations of overall and progression-free survival for the unmethylated, low-methylated (10-39%), and hypermethylated (≥40%) groups were 15, 23, and 30 months and 11, 18, and 21 months, respectively. However, the improvement in the survival of the hypermethylated group was not statistically significant. Conclusion: We suggest a possible association between MGMT methylation status and ATRX mutations in GBM with wild-type IDH.

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Association of MGMT Gene Promoter Methylation with Clinicopathological Parameters in Patients with Wild-type IDH Glioblastoma

Abstract

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