News Story: Full Text
Sponsored By
Orbus Therapeutics Inc Clinical Trial for Recurrent Anaplastic Astrocytomas
Please Click On The Above Banner For More Details
Braintumor Website


   Share  

Efficacy of Temozolomide Is Correlated With 1p Loss and Methylation of the Deoxyribonucleic Acid Repair Gene MGMT in Malignant Gliomas.


Posted on: 08/29/2007

Neurol Med Chir (Tokyo). 2007 Aug;47(8):341-50.


Efficacy of Temozolomide Is Correlated With 1p Loss and Methylation of the Deoxyribonucleic Acid Repair Gene MGMT in Malignant Gliomas.

Ishii D, Natsume A, Wakabayashi T, Hatano H, Asano Y, Takeuchi H, Shimato S, Ito M, Fujii M, Yoshida J.

Department of Neurosurgery, Nagoya University School of Medicine.

Promoter methylation of the deoxyribonucleic acid (DNA) repair gene, O(6)-methylguanine-DNA methyltransferase (MGMT), is associated with improved outcome of patients with glioblastoma multiforme and anaplastic astrocytoma treated with temozolomide (TMZ). Molecular genetic analysis of loss of heterozygosity (LOH) of 1p, 19q, or 10q, p53 mutation, and MGMT promoter methylation was performed in 44 assessable tumor specimens obtained from 46 patients with recurrent malignant gliomas, including 21 with glioblastoma multiforme, 17 with anaplastic astrocytoma, and eight with anaplastic oligoastrocytoma, which have heterogeneous features and variable histological diagnosis, to assess the correlation with the response to TMZ. LOHs of 1p and 19q, and MGMT promoter methylation showed positive correlations with the clinical response to TMZ therapy (p < 0.005, 0.05, and 0.05, respectively; Fisher's exact test). In addition, LOH of 1p and MGMT promoter methylation were associated with longer progression-free survival (p < 0.05 and 0.05, respectively; Cox regression analysis). LOH of 1p in the heterogeneous population of malignant gliomas may be one of the important factors besides MGMT methylation that predict better outcome in patients treated with TMZ.

PMID: 17721049 [PubMed - in process]

Click HERE to return to brain tumor news headlines


Home | Brain Tumor Guide | FAQs | Find A Treatment
Noteworthy Treatments | News | Virtual Trial | Videos | Novocure Optune® | Newsletter
Donations | Brain Tumor Centers | Survivor Stories | Temodar®
Fundraising For Research | Unsubscribe | Contact Us

Copyright (c) 1993 - 2017 by:
The Musella Foundation For Brain Tumor Research & Information, Inc
1100 Peninsula Blvd
Hewlett, NY 11557
888-295-4740


Website Design By
World Wide Websites