Favorable long-term outcome of low-grade oligodendrogliomas irrespective of 1p/19q status when treated without radiotherapy
| العنوان: | Favorable long-term outcome of low-grade oligodendrogliomas irrespective of 1p/19q status when treated without radiotherapy |
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| المؤلفون: | Tomoo Matsutani, Natsuki Shinozaki, Yuzo Hasegawa, Naokatsu Saeki, Yasuo Iwadate, Yoshinori Higuchi |
| المصدر: | Journal of Neuro-Oncology. 102:443-449 |
| بيانات النشر: | Springer Science and Business Media LLC, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Adult, Male, Cancer Research, medicine.medical_specialty, Neurology, medicine.medical_treatment, Oligodendroglioma, Loss of Heterozygosity, Gastroenterology, Leukoencephalopathy, Young Adult, Atrophy, Internal medicine, medicine, Humans, Oligodendroglial Tumor, Longitudinal Studies, Karnofsky Performance Status, Young adult, Aged, Chemotherapy, Radiotherapy, medicine.diagnostic_test, Brain Neoplasms, business.industry, Middle Aged, medicine.disease, Magnetic Resonance Imaging, Surgery, Radiation therapy, Oncology, Chromosomes, Human, Pair 1, Female, Neurology (clinical), business, Chromosomes, Human, Pair 19, Fluorescence in situ hybridization |
| الوصف: | Despite the accumulating evidences of high chemosensitivity especially in anaplastic oligodendrogliomas with loss of chromosomes 1p and 19q, the optimal management strategy for low-grade tumors using the 1p/19q information remains controversial. We have treated all low-grade oligodendrogliomas by a chemotherapy-preceding strategy without radiotherapy, and here we analyzed the survival outcomes of 36 consecutive patients in relation to 1p/19q status. The treatment protocol was as follows: (1) simple observation after gross total resection, and (2) modified PCV chemotherapy for postoperative residual tumors or recurrence after total resection. The 1p and 19q status were analyzed by fluorescence in situ hybridization. The median follow-up period was 7.5 years and no patient was lost during the follow-up periods. 1p/19q co-deletion was observed in 72% of the patients, and there was no significant association between 1p/19q co-deletion and chemotherapy response rate. The 5- and 10-year progression-free survival (PFS) rate was 75.1 and 46.9%, respectively, and the median PFS was 121 months for 1p/19q-deleted tumors and 101 months for non-deleted tumors (log-rank test: P = 0.894). Extent of surgery did not affect PFS (P = 0.685). In contrast, the elder patients (>50) had significantly shorter PFS (P = 0.0458). Recurrent tumors were well controlled by chemotherapy irrespective of 1p/19q status, and 35 out of 36 patients survived without receiving radiotherapy. The 5- and 10-year overall survival rates were 100 and 93.8%, respectively. Two of the patients in their sixties (29%) suffered from severe cognitive dysfunctions and marked brain atrophy following chemotherapy alone. These results show that low-grade oligodendrogliomas could be successfully treated by surgical resection and nitrosourea-based chemotherapy alone without radiotherapy irrespective of 1p/19q status. |
| تدمد: | 1573-7373 0167-594X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cb907cc091aa2ba14ee742e21ca17f1Test https://doi.org/10.1007/s11060-010-0340-4Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....5cb907cc091aa2ba14ee742e21ca17f1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15737373 0167594X |
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