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October 2012 Volume 41 Issue 4

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Article

IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy

  • Authors:
    • Yoshiko Okita
    • Yoshitaka Narita
    • Yasuji Miyakita
    • Makoto Ohno
    • Yuko Matsushita
    • Shintaro Fukushima
    • Minako Sumi
    • Koichi Ichimura
    • Takamasa Kayama
    • Soichiro Shibui
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery and Neuro-Oncology, National Cancer Center, Tokyo 104-0045, Japan, Department of Pathology and Clinical Laboratories, National Cancer Center, Tokyo 104-0045, Japan, Department of Radiation Oncology, National Cancer Center, Tokyo 104-0045, Japan, Division of Brain Tumor Translational Research, National Cancer Center, Tokyo 104-0045, Japan
  • Pages: 1325-1336
    |
    Published online on: July 20, 2012
       https://doi.org/10.3892/ijo.2012.1564
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Abstract

Reliable prognostic biomarkers of grade II gliomas remain unclear. This study aimed to examine the role of mutations of isocitrate dehydrogenase (IDH1/2), 1p/19q co-deletion, and clinicopathological factors in patients with grade II glioma who were primarily treated with radiotherapy or chemoradiotherapy after surgery. Seventy-two consecutive patients, including 49 cases of diffuse astrocytomas (DA), 4 oligodendrogliomas (OL) and 19 oligoastrocytomas (OA), who underwent treatment from 1991 to 2010 at a single institution were examined. The overall survival (OS) of the DA patients (8.3 years) was significantly shorter than that of the OL and OA patients (11.7 years). IDH1/2 mutations were found in 46.9% of the DA patients and 82.6% of the OL and OA patients. The progression-free survival (PFS) and OS of the patients with IDH1/2 mutations (8.4 and 16.3 years) were significantly longer than those of the patients without IDH1/2 mutations (3.3 and 4.5 years). Among the patients with IDH1/2 mutations, those who were initially treated with chemoradiotherapy including nimustine hydrochloride (ACNU), had significantly longer PFS than those treated with radiotherapy alone, whereas no significant difference in PFS was observed between the chemoradiotherapy and radiotherapy groups in the patients without IDH1/2 mutations. Oligodendroglial tumors, age <40 years, initial Karnofsky performance status (KPS) ≥80, and IDH1/2 mutations were favorable prognostic factors regarding PFS and OS. IDH1/2 mutation was a predictive factor of response to chemoradiotherapy in grade II gliomas. Patients with IDH1/2 mutations may benefit more from chemoraiotherapy than those without IDH1/2 mutations.
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Copy and paste a formatted citation
Spandidos Publications style
Okita Y, Narita Y, Miyakita Y, Ohno M, Matsushita Y, Fukushima S, Sumi M, Ichimura K, Kayama T, Shibui S, Shibui S, et al: IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy. Int J Oncol 41: 1325-1336, 2012.
APA
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S. ... Shibui, S. (2012). IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy. International Journal of Oncology, 41, 1325-1336. https://doi.org/10.3892/ijo.2012.1564
MLA
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S., Sumi, M., Ichimura, K., Kayama, T., Shibui, S."IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy". International Journal of Oncology 41.4 (2012): 1325-1336.
Chicago
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S., Sumi, M., Ichimura, K., Kayama, T., Shibui, S."IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy". International Journal of Oncology 41, no. 4 (2012): 1325-1336. https://doi.org/10.3892/ijo.2012.1564
Copy and paste a formatted citation
x
Spandidos Publications style
Okita Y, Narita Y, Miyakita Y, Ohno M, Matsushita Y, Fukushima S, Sumi M, Ichimura K, Kayama T, Shibui S, Shibui S, et al: IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy. Int J Oncol 41: 1325-1336, 2012.
APA
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S. ... Shibui, S. (2012). IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy. International Journal of Oncology, 41, 1325-1336. https://doi.org/10.3892/ijo.2012.1564
MLA
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S., Sumi, M., Ichimura, K., Kayama, T., Shibui, S."IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy". International Journal of Oncology 41.4 (2012): 1325-1336.
Chicago
Okita, Y., Narita, Y., Miyakita, Y., Ohno, M., Matsushita, Y., Fukushima, S., Sumi, M., Ichimura, K., Kayama, T., Shibui, S."IDH1/2 mutation is a prognostic marker for survival and predicts response to chemotherapy for grade II gliomas concomitantly treated with radiation therapy". International Journal of Oncology 41, no. 4 (2012): 1325-1336. https://doi.org/10.3892/ijo.2012.1564
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