scholarly journals SS-1 Therapeutic challenges for glioblastoma: Temozolomide and its issues?

2020 ◽  
Vol 2 (Supplement_3) ◽  
pp. ii1-ii1
Author(s):  
Motoo Nagane
Keyword(s):  
Promoter Methylation ◽  
Dna Methyltransferase ◽  
Standard Of Care ◽  
Phase Iii ◽  
Lower Grade ◽  
Newly Diagnosed ◽  
Current Standard ◽  
Who Grade ◽  
Phase Iii Trial ◽  
Mgmt Gene

Abstract Glioblastoma (GBM), the most malignant form (WHO grade IV) of gliomas, remains incurable despite recent advances in medical technologies and molecular knowledge, with 5-year survival rate being just beyond 10%, thus undoubtedly leaving unmet needs to develop effective therapeutics to improve outcome. Current standard of care for patients with newly diagnosed GBM is maximum safe resection of the enhancing tumor bulk, followed by involved-field radiotherapy with temozolomide (TMZ) given concomitantly and as an adjuvant therapy thereof with or without Tumor-Treating Fields (TTF). The efficacy of TMZ for GBM was proved in 2005 by a randomized phase III trial (EORTC25981) for the first time ever in history, since then, however, any other agents have failed to show benefit to improve survival until now. O6-methylguanine-DNA methyltransferase (MGMT), a specific DNA repair enzyme, has been shown to restore the cytotoxic O6-methylguanine lesion induced by TMZ to normal, responsible for a major reason of TMZ resistance. Expression of MGMT is tightly regulated by methylation of the promoter region of the MGMT gene, where promoter methylation results in suppression of its expression. Accordingly, the promoter methylation of the MGMT gene (meth-MGMT) has been consistently associated with a better response to and outcome by TMZ treatment, and furthermore a favorable prognostic factor for patients with newly diagnosed GBM in a number of prospective clinical trials. In this line, efforts have been made to overcome TMZ resistance including intensifying dose schedulings of TMZ, one of which has been currently tested in a multi-institutional prospective phase III trial in Japan (JCOG1308C). TMZ has also been investigated in lower grade gliomas. A major issue in treating lower grade glioma with TMZ is potential development of the hypermutated tumors by virtue of O6-methylguanine-induced mutagenesis. The clinical and molecular consideration related to TMZ in glioma treatment will be presented.

Cilengitide combined with standard treatment for patients with newly diagnosed glioblastoma and methylated O6-methylguanine-DNA methyltransferase (MGMT) gene promoter: Key results of the multicenter, randomized, open-label, controlled, phase III CENTRIC study.

2013 ◽  
Vol 31 (18_suppl) ◽  
pp. LBA2009-LBA2009 ◽  
Author(s):  
Roger Stupp ◽  
Monika E. Hegi ◽  
Thierry Gorlia ◽  
Sara Erridge ◽  
Danica Grujicic ◽  
...  
Keyword(s):  
Safety Profile ◽  
Dna Methyltransferase ◽  
Gene Promoter ◽  
Progression Free Survival ◽  
Phase Iii ◽  
Newly Diagnosed ◽  
Open Label ◽  
Who Grade ◽  
Mgmt Gene ◽  
Newly Diagnosed Glioblastoma

LBA2009 Background: Cilengitide (CIL) is a selective αvβ3 and αvβ5 integrin inhibitor. In a phase II study in patients with newly diagnosed glioblastoma, CIL added to standard temozolomide (TMZ) and radiotherapy (RT) was well tolerated and appeared to confer improved survival in patients with glioblastoma and methylated MGMT gene promoter (Stupp et al. J Clin Oncol. 2010;28:2712-8). Methods: This multicenter, randomized, controlled, open-label, phase III study randomized (1:1) patients (≥ 18 years) with newly diagnosed, histologically proven supratentorial glioblastoma (WHO Grade IV) and centrally determined MGMT gene promoter methylation. Treatment consisted of CIL 2000 mg twice weekly i.v. plus standard TMZ/RT→TMZ (concomitant and adjuvant temozolomide and radiotherapy; Stupp et al. N Engl J Med. 2005;352:987-96) or standard TMZ/RT→TMZ alone. CIL was to be administered for ≥ 18 months, or until disease progression or unacceptable toxicity. Primary endpoint was overall survival (OS); secondary endpoints included progression-free survival (PFS) per investigator read and safety. Results: 272 patients received CIL plus TMZ/RT→TMZ, and 273 were treated with TMZ/RT→TMZ alone (intention-to-treat population). 54% and 52% of patients were male, and 42% and 44% had ECOG-PS ≥ 1, respectively. 75% of patients of both arms were ≥ 50 years old. Overall, baseline characteristics were well balanced across treatment arms. Median OS was 26.3 months in both arms (Hazard Ratio [HR] = 1.02 [95%CI: 0.81-1.29], p = 0.86). Median PFS per investigator read was 13.5 months in the CIL arm and 10.7 months in the control arm (HR = 0.93 [95%CI: 0.76-1.14], p = 0.48). Treatment was generally well tolerated and the known safety profile of CIL was confirmed. Conclusions: CIL failed to prolong PFS or OS in patients with newly diagnosed glioblastoma and methylated MGMT gene promoter. The previously reported safety profile of CIL in addition to standard therapy was confirmed. Clinical trial information: NCT00689221.

Combination chemotherapy versus temozolomide (TMZ) for patients with MGMT methylated (m-MGMT) glioblastoma (GBM): Results of cellworks omics biosimulation—MyCare-015.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e14501-e14501
Author(s):  
Michael Castro ◽  
Nirjhar Mundkur ◽  
Anusha Pampana ◽  
Aftab Alam ◽  
Aktar Alam ◽  
...  
Keyword(s):  
Combination Therapy ◽  
Clinical Decision Making ◽  
Drug Effects ◽  
Standard Of Care ◽  
Clinical Decision ◽  
Phase Iii ◽  
Patient Specific ◽  
Experimental Therapy ◽  
Newly Diagnosed ◽  
Current Standard

e14501 Background: UKT-03 evaluated TMZ plus Lomustine in a single arm phase II trial in newly diagnosed GBM patients. An overall survival of 23 months was a substantial improvement over historical experience. Patients with m-MGMT v. unmethylated tumors had a 2-yr survival of 75% and median survival not reached compared to 20% and 12.5 months, respectively. These data formed the basis for NOA-9, a randomized phase III trial in newly diagnosed, m-MGMT GBM which randomized 141 patients to standard therapy or experimental therapy with Lomustine and TMZ every 6 weeks. A superiority for the combination was observed: 48.1 v. 31.4 months for the standard arm in the ITT analysis. Nevertheless, many neurooncologists are reluctant to adopt this approach. The current standard of care uses single biomarker, m-MGMT, in contrast to comprehensive pathway analysis (CPA). We sought to determine if CPA could discriminate more effectively among each patient’s likelihood of benefiting from combination treatment. Methods: Cellworks Singula employs a novel Cellworks Omics Biology Model (CBM) to predict patient-specific biomarker and phenotype response of personalized GBM avatars to drug agents, radiation, and targeted therapies. The CBM was developed and validated using PubMed to generate protein network maps of patient-specific activated and inactivated disease pathways. CBM was used to simulate the TMZ and TMZ-Lomustine therapies for each patient in a TCGA cohort of 368 GBM patients. Omics data including methylation, whole exome sequencing, and copy number alterations were input into CBM. The Singula Composite Inhibition Score (CIS) was calculated based on the measured quantitative drug effects. Results: Though incremental gain from the combination was seen in all patients, CIS varied across the population with relative scores ranging from 32-82, with best responders have more than twice the benefit. Conclusions: CPA shows that m-MGMT is an excellent biomarker for determining the likelihood of benefit from TMZ and lomustine, with the caveat that CBM identifies 18% could be spared from TMZ exposure and would benefit from Lomustine alone. Otherwise, these data lend support for evolving the standard of care with combination therapy for patients with m-MGMT GBM and should help overcome a reluctance to employing combination therapy. Additionally, CBM has utility to individualize clinical decision making. [Table: see text]

Phase II Trial of Lomustine Plus Temozolomide Chemotherapy in Addition to Radiotherapy in Newly Diagnosed Glioblastoma: UKT-03

2006 ◽  
Vol 24 (27) ◽  
pp. 4412-4417 ◽  
Author(s):  
Ulrich Herrlinger ◽  
Johannes Rieger ◽  
Dorothee Koch ◽  
Simon Loeser ◽  
Britta Blaschke ◽  
...  
Keyword(s):  
Promoter Methylation ◽  
Gene Promoter ◽  
Hematologic Toxicity ◽  
Karnofsky Performance Score ◽  
Newly Diagnosed ◽  
Who Grade ◽  
Mgmt Gene ◽  
Newly Diagnosed Glioblastoma ◽  
Involved Field ◽  
Involved Field Radiotherapy

Purpose To evaluate toxicity and efficacy of the combination of lomustine, temozolomide (TMZ) and involved-field radiotherapy in patients with newly diagnosed glioblastoma (GBM). Patients and Methods Thirty-one adult patients (median Karnofsky performance score 90; median age, 51 years) accrued in two centers received involved-field radiotherapy (60 Gy in 2-Gy fractions) and chemotherapy with lomustine 100 mg/m2 (day 1) and TMZ 100 mg/m2/d (days 2 to 6) with individual dose adjustments according to hematologic toxicity. Results A median of five courses (range, one to six courses) were delivered. WHO grade 4 hematotoxicity was observed in five patients (16%) and one of these patients died as a result of septicemia. Nonhematologic toxicity included one patient with WHO grade 4 drug-induced hepatitis (leading to discontinuation of lomustine and TMZ) and one patient with WHO grade 2 lung fibrosis (leading to discontinuation of lomustine). The progression-free survival (PFS) rate at 6 months was 61.3%. The median PFS was 9 months (95% CI, 5.3 to 11.7 months), the median overall survival time (MST) was 22.6 months (95% CI, 12.5 to not assessable), the 2-year survival rate was 44.7%. O6-Methylguanine–DNA methyltransferase (MGMT) gene-promoter methylation in the tumor tissue was associated with longer PFS (P = .014, log-rank test) and MST (P = .037). Conclusion The combination of lomustine, TMZ, and radiotherapy had acceptable toxicity and yielded promising survival data in patients with newly diagnosed GBM. MGMT gene-promoter methylation was a strong predictor of survival.

scholarly journals SYST-08. A phase II trial of concurrent Sunitinib, Temozolomide and Radiation Therapy followed by adjuvant Temozolomide for newly diagnosed Glioblastoma patients with an unmethylated MGMT gene promoter (A01-M121-11A, McG1132)

2021 ◽  
Vol 3 (Supplement_4) ◽  
pp. iv10-iv10
Author(s):  
Mame Daro Faye ◽  
Siham Sabri ◽  
Paula De Robles ◽  
Raman Agnihotram ◽  
Alexander Torres-Vasquez ◽  
...  
Keyword(s):  
Phase Ii ◽  
Phase Ii Trial ◽  
Standard Of Care ◽  
Treatment Modalities ◽  
Newly Diagnosed ◽  
Current Standard ◽  
Who Grade ◽  
Adjuvant Temozolomide ◽  
Mgmt Promoter ◽  
Grade 3

Abstract INTRODUCTION Despite advances in treatment modalities, the overall prognosis of GBM remains dismal, particularly for patients with unmethylated MGMT promoter. Thus, alternative treatment strategies are warranted. Our group has previously shown that addition of Sunitinib (SU11248) to standard therapy significantly improved the response of unmethylated MGMT cells through decreased angiogenicity and tumorigenicity. In this phase II trial, we tested for the first time the combination of Sunitinib with RT and Temozolomide in newly diagnosed MGMT unmethylated GBM patients. METHODS Patients with histologically confirmed WHO Grade IV GBM and MS-PCR confirmed unmethylated MGMT promoter, age 18-70, KPS ≥70, life expectancy ≥6 months were eligible. 41 patients treated between 2012 and 2017 were screened, 37 of which were eligible. Patients received 12.5 mg of daily Sunitinib for 7 days, followed by concurrent RT, Temozolomide and 12.5 mg Sunitinib for 6 weeks, then adjuvant Temozolomide x6 cycles. RT and Temozolomide doses were as per standard of care. Primary objective was PFS as assessed by RANO criteria, secondary objectives were OS and safety. RESULTS Median follow-up time was 15 months. Median PFS was 7 months (95%CI, 6.7-7.2) and 6-month PFS was 59.3%. Median OS was 13 months (95%CI, 12.62-13.37) and 2-year OS was 17.8%. Two patients had OS >50 months, with one surviving 71 months. Having received >3 cycles of adjuvant Temozolomide, surgery at progression or age ≤65 significantly predicted for better OS, with hazard ratios of 0.184 (p=0.001), 0.402 (p=0.026) and 10.017 (for age >65, p=0.002) respectively. Grade ≥3 thrombocytopenia occurred in 18.9% of patients, grade ≥3 neutropenia in 10.8% and grade ≥3 thromboembolic events in 13.5%. There were no grade 5 evens. CONCLUSION Addition of Sunitinib to RT and Temozolomide was well tolerated and survival outcomes compared favorably to the current standard of care for GBM patients with unmethylated MGMT promoter status.

scholarly journals A Systematic Review of Phase III Clinical Trials of Daratumumab Addition to Standard Care Regimen for Newly Diagnosed Multiple Myeloma

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 7-7
Author(s):  
Zahoor Ahmed ◽  
Karun Neupane ◽  
Rabia Ashraf ◽  
Amna Khan ◽  
Moazzam Shahzad ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Standard Care ◽  
Standard Of Care ◽  
Phase Iii ◽  
Control Group ◽  
Newly Diagnosed ◽  
Phase Iii Trial ◽  
Mesh Terms ◽  
Three Phase

Introduction: In multiple myeloma (MM), plasma cells including malignant cells show expression of CD38, which is the target for daratumumab (Dara), an IgG1k monoclonal antibody, approved for MM treatment. This review highlights the efficacy and safety of Dara addition to the standard of care therapy in newly diagnosed MM (NDMM) patients (pts). Methods: We conducted a literature search using four databases (PubMed, Embase, Web of Science, and Clinicaltrials.gov). Our search strategy included MeSH terms and key words for multiple myeloma and Dara including trade names and generic names from date of inception to April 2020. A total of 587 articles were screened, and after excluding review articles, duplicates, and non-relevant articles, we included three phase III trials reporting daratumumab addition to the standard of care regimens for NDMM patients. Results: A total of 2528 patients were enrolled and evaluated in three phase III randomized controlled trials. A total of 1261 patients were in the daratumumab group and 1267 patients were in the control group. Total 1085 were transplant eligible and 1443 patients were transplant ineligible. Transplant eligible: Moreau et al. (2019) underlined the efficacy of Dara + bortezomib (V) + thalidomide (T) + dexamethasone (d) in NDMM pts (n=1085) in CASSIOPEIA phase III trial. Addition of Dara to VTd group showed marked improvent in progression free survival (PFS): 93% vs 85% at 18 months (hazard ratio (HR) 0.42 [0.34-0.51]; p<0.0001), and overall response rate (ORR) of 92.6% (CI: 95%, P <0.0001) in Dara + VTd group as compared to VTd group (89.9%). Minimal residual disease (MRD) negative status (10-⁵ sensitivity threshold, assessed by multipara metric flow cytometry) in bone marrow was 64% (P<0.0001) in Dara using VTd vs 44% in VTd group. Transplant ineligible: Bahlis N et al. (2019) studied Dara + lenolidamide (R) and dexamethasone (d) in NDMM pts (n=737) in MAIA phase III trial. Mateos et al. (2018) reported the role of Dara + V + melphalan (M) + prednisone (P) vs VMP in NDMM pts (n=706) in a phase III trial (Alcyone). Addition of Dara to Rd, and VMP group showed marked improvent in PFS: 68% vs 46% at 36 months [confidence interval [CI], 0.44-0.71; P<0.0001], and 63% vs 36 at 24 months (HR: 0.47, 95% CI 0.33-0.67, p<0.0001), and ORR: 93% vs 82% (P<0.0001), and 90.9% vs 73.9%, respectively. MRD negative status in bone marrow was observed higher with Dara compared to without Dara using Rd (24.2% vs 7.3%) (P<0.001), and Dara + VMP group (28% vs 7%) (p<0.0001) respectively. Significant toxicities mainly included pancytopenias and opportunistic infections (table 2). Standard care regimen (VTd, VMP, Rd) with Dara addition achieved superior outcomes in terms of ORR and PFS. Addition of Dara improved MRD negative status. Conclusion: NDMM treatment with Dara plus standard care therapy (VTd, VMP, Rd) has shown promising outcomes and has set a benchmark for future studies. Disclosures Anwer: Incyte, Seattle Genetics, Acetylon Pharmaceuticals, AbbVie Pharma, Astellas Pharma, Celegene, Millennium Pharmaceuticals.: Honoraria, Research Funding, Speakers Bureau.

RTID-05. THE MULTI-ARM GLIOBLASTOMA AUSTRALASIA (MAGMA) TRIAL

2021 ◽  
Vol 23 (Supplement_6) ◽  
pp. vi193-vi194
Author(s):  
Benjamin Kong ◽  
Hao-Wen Sim ◽  
Eng-Siew Koh ◽  
Hui Gan ◽  
Elizabeth H Barnes ◽  
...  
Keyword(s):  
Data Collection ◽  
Progression Free Survival ◽  
Standard Of Care ◽  
Phase Iii ◽  
Low Grade ◽  
Newly Diagnosed ◽  
Current Standard ◽  
Future Design ◽  
Multiple Treatment ◽  
Newly Diagnosed Glioblastoma

Abstract BACKGROUND Survival outcomes for patients with newly diagnosed glioblastoma have not changed significantly since the introduction of concurrent temozolomide with post-surgical radiation followed by adjuvant temozolomide. METHODS Multi-Arm Glioblastoma Australasia (MAGMA) is a recently initiated phase III multi-arm, multi-centre randomized trial for patients with newly diagnosed glioblastoma, led by the Australian Cooperative Trials Group for Neuro-Oncology (COGNO), that will concurrently test multiple treatment questions. Initially, a partial factorial design will be implemented to compare the current standard of care with either or both of (1) neoadjuvant temozolomide and (2) aduvant temozolomide continued beyond six months until progression. MAGMA will transition to a multi-arm multi-stage (MAMS) design as additional tratment question are introduced. Treatment allocation to each question will be balanced (1:1) using minimisation over several stratification factors, including study site, age, IDH-mutation status, surgical extent and randomization to the prior treatment question(s). The primary outcome is overall survival. Secondary outcomes include progression-free survival (measured by mRANO), time to first non-temozolomide systemic treatment, clinically significant toxicity as measured by Grade 2/4 adverse events, and health-related quality of life measures. Parsimonious data collection and a streamlined assessment schedule have been incorporated to mitigate the burden of data collection (such as low grade toxicity from temozolomide), and to encourage participation in regional and rural settings. A consortium model has been adopted to foster neuro-oncology expertise and infrastructure and share academic credit and future design opportunities. PROGRESS Recruitment commenced in September 2020. To date, 60 patients have been recruited from an initial sample size target of 250 patients for each of these initial two treatment questions. Of these 60 patients, 45 have been randomized in Question 1 (neoadjuvant chemotherapy) whilst 50 randomized in Question 2 (prolonged adjuvant chemotherapy). To date, 14 of the 27 intended sites are open to recruitment.

scholarly journals CTNI-29. CODEL: PHASE III TRIAL OF RT ALONE, RT PLUS TMZ, OR TMZ ALONE FOR NEWLY-DIAGNOSED, 1p/19q CODELETED ANAPLASTIC OLIGODENDROGLIOMA. ANALYSIS FROM THE INITIAL STUDY DESIGN. (NCCTG N0577, ALLIANCE)

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii48-ii49
Author(s):  
Kurt Jaeckle ◽  
Karla Ballman ◽  
Martin van den Bent ◽  
Caterina Giannini ◽  
Evanthia Galanis ◽  
...  
Keyword(s):  
Cox Regression ◽  
Initial Study ◽  
Phase Iii ◽  
Newly Diagnosed ◽  
Who Grade ◽  
Phase Iii Trial ◽  
Grade 3 ◽  
Who Grade Iii ◽  
Grade Iii

Abstract BACKGROUND The original 3-arm CODEL design included a radiotherapy (RT)-alone control arm, an RT plus temozolomide (TMZ) arm, and an exploratory TMZ-alone arm. We report the analysis involving patients treated per the initial design. METHODS Adults (18+ years) with newly-diagnosed 1p/19q codeleted WHO grade III oligodendroglioma were randomized to RT (5940 cGy) alone (Arm A); RT with concomitant and adjuvant TMZ (Arm B); or TMZ alone (Arm C). Primary endpoint was OS, Arm A vs. B. Secondary comparisons were performed for OS and PFS, comparing pooled RT arms with the TMZ-alone arm. RESULTS 36 patients were randomized equally to the three arms. At median follow-up of 7.5 years, 83.3% (10/12) TMZ-alone patients had progressed, versus 37.5% (9/24) patients on the RT arms. PFS was shorter in TMZ-alone patients compared to RT-treated patients (HR=3.12; 95% CI: 1.26, 7.69; p=0.014). Death from disease progression occurred in 3/12 (25%) of TMZ-alone patients and 4/24 (16.7%) of RT-treated patients. OS did not statistically differ between arms, although this comparison was underpowered. After adjustment for IDH status (mutated vs. wildtype) in a Cox regression model, with IDH status and RT treatment status as co-variables (Arm C vs pooled A and B), PFS remained shorter for patients not receiving RT (HR= 3.33; 95% CI: 1.31, 8.45; p=0.011), and OS differences remained non-significant ((HR = 2.78; 95% CI 0.58, 13.22, p=0.20). Grade 3+ adverse events occurred in 25%, 42% and 33% patients (Arms A, B and C, respectively). Neurocognitive assessments, comparing baseline and 3 month timepoints, showed no significant differences between arms. CONCLUSIONS TMZ-alone treated patients experienced significantly shorter PFS than patients treated on the pooled RT arms, which remained significant when adjusting for IDH status. CODEL has been redesigned to compare the efficacy and toxicity of RT+PCV versus RT+TMZ. Clinicaltrials.gov Identifier: NCT00887146. Support: U10CA180821, U10CA180882, https://acknowledgments.alliancefound.org.

Results of the interim analysis of the EORTC randomized phase III CATNON trial on concurrent and adjuvant temozolomide in anaplastic glioma without 1p/19q co-deletion: An Intergroup trial.

2016 ◽  
Vol 34 (18_suppl) ◽  
pp. LBA2000-LBA2000 ◽  
Author(s):  
Martin J. Van Den Bent ◽  
Sara Erridge ◽  
Michael A. Vogelbaum ◽  
Anna K. Nowak ◽  
Marc Sanson ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Dna Methyltransferase ◽  
Anaplastic Glioma ◽  
Phase Iii ◽  
P Value ◽  
Newly Diagnosed ◽  
Who Grade ◽  
Mutational Status ◽  
The Impact

LBA2000 Background: The benefit of adding chemotherapy to radiotherapy (RT) in newly diagnosed anaplastic glioma without 1p/19q co-deletion is unknown. The CATNON trial investigated the impact of adjuvant and/or concurrent chemotherapy with temozolomide (TMZ) in these tumors. Methods: Eligible were patients with newly diagnosed WHO grade III glioma without 1p/19q co-deletion, ≥ 18 years, and WHO performance status (PS) 0-2. All patients received RT 59.4 Gy in 33 fractions, and in a 2 x 2 factorial design were randomized to: RT alone; RT with concurrent daily 75 mg/m2 TMZ; RT followed with 12 cycles of 150-200 mg/m2 adjuvant TMZ day 1-5/4 weeks; or RT with both concurrent and 12 cycles of adjuvant TMZ. Stratification factors included O6-methyl-guanine DNA methyltransferase ( MGMT) promoter methylation and PS. Primary endpoint was overall survival (OS). 748 patients and 534 events were needed to detect a HR reduction of 0.775 for both concurrent and adjuvant TMZ. An interim analysis was foreseen after 219 events (41%), and required a p value of 0.0084 for rejecting the Null hypothesis of no OS difference. Results: Between Dec 2007 and Aug 2015 748 patients were randomized. On Oct 6, 2015 the interim analysis was conducted based on 221 events (median follow-up: 27 months). The analysis showed a HR reduction for OS of 0.645 (95% CI 0.450, 0.926; p= 0.0014) after adjuvant TMZ (arms iii and iv). MGMT status could be determined in 74% of patients, and was found methylated in 42% of them. MGMT methylation was prognostic for OS (HR 0.54, 95% CI 0.38, 0.77; p= 0.001), but at this stage did not predict improved outcome to adjuvant TMZ. For progression free survival (PFS), the risk adjusted HR of adjuvant TMZ was 0.586 (95% CI 0.472, 0.727; p < 0.0001). Conclusions: 12 cycles adjuvant TMZ improve OS in anaplastic glioma without 1p/19q co-deletion. Further follow-up will elucidate the role of concurrent TMZ . Molecular studies to address the impact of isocitrate dehydrogenase (IDH) mutational status and methylation profiling are ongoing. Clinical trial information: NCT00626990. [Table: see text]

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