scholarly journals Hypofractionated Stereotactic Re-Irradiation with Pembrolizumab and Bevacizumab in Patients with Recurrent High Grade Gliomas: Results from a Phase 1 Study

2020 ◽  
Author(s):  
Solmaz Sahebjam ◽  
Peter A Forsyth ◽  
Nam D Tran ◽  
John A Arrington ◽  
Robert Macaulay ◽  
...  
Keyword(s):  
Phase 1 ◽  
Progression Free Survival ◽  
Complete Response ◽  
Recurrent Glioblastoma ◽  
High Grade ◽  
Programmed Death ◽  
Programmed Death 1 ◽  
High Grade Gliomas ◽  
Grade 3 ◽  
Recommended Phase Ii Dose

Abstract Background Radiotherapy may synergize with programmed death 1 (PD-1)/PD-1 ligand (PD-L1) blockade. The purpose of this study was to determine the recommended Phase II dose, safety/tolerability, and preliminary efficacy of combining pembrolizumab, an anti-PD-1 monoclonal antibody, with hypofractionated stereotactic irradiation (HFSRT) and bevacizumab in patients with recurrent high grade gliomas (HGGs). Methods Eligible subjects with recurrent glioblastoma or anaplastic astrocytoma were treated with pembrolizumab (100 or 200 mg based on dose level Q3W) concurrently with HFSRT (30 Gy in 5 fractions) and bevacizumab 10 mg/kg Q2W. Results Thirty two patients were enrolled (bevacizumab naïve, n = 24; bevacizumab resistant, n = 8). The most common treatment-related adverse events (TRAEs) were proteinuria (40.6%), fatigue (25%), increased alanine aminotransferase (25%), and hypertension (25%). TRAEs leading to discontinuation occurred in 1 patient who experienced a grade 3 elevation of aspartate aminotransferase. In the bevacizumab naïve cohort, twenty patients (83%) had a complete response (CR) or partial response (PR). The median overall survival (OS) and progression-free survival (PFS) were 13.45 months (95% CI: 9.46-18.46) and 7.92 months (95% CI: 6.31-12.45), respectively. In the bevacizumab resistant cohort, PR was achieved in 5 patients (62%). Median OS was 9.3 months (95% CI: 8.97-18.86) with a median PFS of 6.54 months (95% CI: 5.95-18.86). The majority of patients (20/26 pts; 77%) had tumor-cell/tumor-microenvironment PD-L1 expression <1%. Conclusions The combination of HFSRT with pembrolizumab and bevacizumab in patients with recurrent HGG is generally safe and well tolerated. These findings merit further investigation of HFSRT with immunotherapy in HGGs.

scholarly journals Mebendazole and temozolomide in patients with newly diagnosed high-grade gliomas: Results of a phase 1 clinical trial

2020 ◽  
Author(s):  
Gary L Gallia ◽  
Matthias Holdhoff ◽  
Henry Brem ◽  
Avadhut D Joshi ◽  
Christine L Hann ◽  
...  
Keyword(s):  
Dose Escalation ◽  
Plasma Levels ◽  
Phase 1 ◽  
Progression Free Survival ◽  
Maximum Tolerated Dose ◽  
High Grade ◽  
Newly Diagnosed ◽  
Kaplan Meier ◽  
High Grade Gliomas ◽  
Expansion Cohort

Abstract Background Mebendazole is an anthelmintic drug introduced for human use in 1971 that extends survival in preclinical models of glioblastoma and other brain cancers. Methods A single center dose escalation and safety study of mebendazole in 24 patients with newly diagnosed high-grade gliomas (HGG) in combination with temozolomide was conducted. Patients received mebendazole in combination with adjuvant temozolomide after completing concurrent radiation plus temozolomide. Dose escalation levels were 25, 50, 100 and 200 mg/kg/day of oral mebendazole. A 15-patient expansion cohort was conducted at the maximum tolerated dose of 200 mg/kg/day. Trough plasma levels of mebendazole were measured at 4, 8 and 16 weeks. Results Twenty-four patients (18 glioblastoma, 6 anaplastic astrocytoma) were enrolled with median age of 49.9 years. Four patients (at 200 mg/kg) developed elevated grade 3 ALT and/or AST after one month, which reversed with lower dosing or discontinuation. Plasma levels of mebendazole were variable but generally increased with dose. Kaplan Meier analysis showed a 21-month median survival with 43% of patients alive at two years and 25% at 3 and 4 years. Median progression free survival (PFS) from the date of diagnosis for 17 patients taking more than one month of mebendazole was 13.1 months (95% Confidence Interval: 8.8 to 14.6 months) but for seven patients who received less than one month of mebendazole PFS was 9.2 months (95% CI: 5.8 -13.0 months). Conclusion Mebendazole at doses up to 200 mg/kg demonstrated long-term safety and acceptable toxicity. Further studies are needed to determine mebendazole’s efficacy in patients with HGG.

Pooled Analysis Safety Profile of Nivolumab and Ipilimumab Combination Therapy in Patients With Advanced Melanoma

2017 ◽  
Vol 35 (34) ◽  
pp. 3815-3822 ◽  
Author(s):  
Mario Sznol ◽  
Pier Francesco Ferrucci ◽  
David Hogg ◽  
Michael B. Atkins ◽  
Pascal Wolter ◽  
...  
Keyword(s):  
Median Time ◽  
Safety Profile ◽  
Progression Free Survival ◽  
Pooled Analysis ◽  
Advanced Melanoma ◽  
Cytotoxic T Cell ◽  
Programmed Death ◽  
Programmed Death 1 ◽  
Grade 3 ◽  
Time To Onset

Purpose The addition of nivolumab (anti–programmed death-1 antibody) to ipilimumab (anti–cytotoxic T-cell lymphocyte–associated 4 antibody) in patients with advanced melanoma improves antitumor response and progression-free survival but with a higher frequency of adverse events (AEs). This cross-melanoma study describes the safety profile of the approved nivolumab plus ipilimumab regimen. Methods This retrospective safety review on data from three trials (phase I, II, and III) included patients with advanced melanoma who received at least one dose of nivolumab 1 mg/kg plus ipilimumab 3 mg/kg every 3 weeks × 4 and then nivolumab 3 mg/kg every 2 weeks until disease progression or unacceptable toxicity while following established guidelines for AE management. Analyses were of all treatment-related AEs, select (immune-related) AEs, time to onset and resolution, and use of immune-modulating agents and their effects on outcome. Results Among 448 patients, median duration of follow-up was 13.2 months. Treatment-related grade 3/4 AEs occurred in 55.5% of patients; 35.7% had treatment-related AEs that led to discontinuation. The most frequent treatment-related select AEs of any grade were skin (64.3%) and GI (46.7%) and of grade 3/4, hepatic (17.0%) and GI (16.3%); 30.1% developed a grade 2 to 4 select AE in more than one organ category. Median time to onset of grade 3/4 treatment-related select AEs ranged from 3.1 (skin) to 16.3 (renal) weeks, and with the exclusion of endocrine AEs, median time to resolution from onset ranged from 1.9 (renal) to 4.5 (pulmonary) weeks, with resolution rates between 79% and 100% while using immune-modulating agents. Four (< 1%) on-study deaths were attributed to therapy. Conclusion Frequency of grade 3/4 treatment-related AEs was higher with nivolumab plus ipilimumab and occurred earlier than historical experience with either agent alone, but resolution rates were similar.

Bortezomib, melphalan, prednisone, and thalidomide for relapsed multiple myeloma

Blood ◽  
2006 ◽  
Vol 109 (7) ◽  
pp. 2767-2772 ◽  
Author(s):  
Antonio Palumbo ◽  
Maria Teresa Ambrosini ◽  
Giulia Benevolo ◽  
Patrizia Pregno ◽  
Norbert Pescosta ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Response Rate ◽  
Phase 1 ◽  
Progression Free Survival ◽  
Complete Response ◽  
Maximum Tolerated Dose ◽  
Free Survival ◽  
Grade 3 ◽  
Dose Levels ◽  
Initial Results

AbstractIn multiple myeloma (MM), the addition of thalidomide or bortezomib to the standard oral melphalan/prednisone combination significantly increased response rate and event-free survival. In this multicenter phase 1/2 trial, dosing, safety, and efficacy of the 4-drug combination, bortezomib, melphalan, prednisone, and thalidomide (VMPT) was determined. Bortezomib was administered at 3 dose levels (1.0 mg/m2, 1.3 mg/m2, or 1.6 mg/m2) on days 1, 4, 15, and 22; melphalan was given at a dose of 6 mg/m2 on days 1 through 5 and prednisone at 60 mg/m2 on days 1 through 5. Thalidomide was delivered at 50 mg on days 1 through 35. Each course was repeated every 35 days. The maximum tolerated dose of bortezomib was 1.3 mg/m2. Thirty patients with relapsed or refractory MM were enrolled; 20 patients (67%) achieved a partial response (PR) including 13 patients (43%) who achieved at least a very good PR. Among 14 patients who received VMPT as second-line treatment, the PR rate was 79% and the immunofixation-negative complete response rate 36%. The 1-year progression-free survival was 61%, and the 1-year survival from study entry was 84%. Grade 3 nonhematologic adverse events included infections (5 patients), fatigue (1), vasculitis (1), and peripheral neuropathy (2); no grade 4 toxicities were recorded. Initial results showed that VMPT is an effective salvage therapy with a very high proportion of responses. The incidence of neurotoxicities was unexpectedly low.

scholarly journals Bintrafusp alfa (M7824) a bifunctional fusion protein targeting TGF-β and PD-L1: results from a phase 1 expansion cohort in patients with recurrent glioblastoma

2021 ◽  
Author(s):  
Mustafa Khasraw ◽  
Michael Weller ◽  
David Lorente ◽  
Kathryn Kolibaba ◽  
Chee Khoon Lee ◽  
...  
Keyword(s):  
Fusion Protein ◽  
Disease Control ◽  
Protein Targeting ◽  
Phase 1 ◽  
Progression Free Survival ◽  
Complete Response ◽  
Recurrent Glioblastoma ◽  
Open Label ◽  
Bifunctional Fusion Protein ◽  
Expansion Cohort

Abstract Background For patients with recurrent glioblastoma (rGBM), there are few options following treatment failure with radiotherapy plus temozolomide. Bintrafusp alfa is a first-in-class bifunctional fusion protein composed of the extracellular domain of the TGF-βRII receptor (a TGF-β “trap”) fused to a human IgG1 antibody blocking PD-L1. Methods In this phase 1, open-label expansion cohort, (NCT02517398), patients with rGBM that progressed after radiotherapy plus temozolomide received bintrafusp alfa 1200 mg Q2W until disease progression, unacceptable toxicity, or trial withdrawal. Response was assessed per RANO criteria. The primary endpoint was disease control rate (DCR); secondary endpoints included safety. Results As of August 24, 2018, 35 patients received bintrafusp alfa for a median of 1.8 (range, 0.5-20.7) months. Eight patients (22.9%) experienced disease control as assessed by an independent review committee: 2 had a partial response, 4 had stable disease, and 2 had non–complete response /non–progressive disease. Median progression-free survival (PFS) was 1.4 (95% CI, 1.2-1.6) months; 6- and 12-month PFS rates were 15.1% and 11.3%, respectively. Median overall survival (OS) was 5.3 (95% CI, 2.6-9.4) months; 6- and 12-month OS rates were 44.5% and 30.8%, respectively. The DCR (95% CI) was 66.7% (22.3-95.7%) for patients with IDH-mutant GBM (n=6) and 13.8% (3.9-31.7%) for patients with IDH–wild-type GBM (n=29). Disease control was seen regardless of PD-L1 expression. Twenty-five patients (71.4%) experienced treatment-related adverse events (grade ≥3; 17.1% [n=6]). Conclusions The percentage of patients achieving disease control and the manageable safety profile may warrant further investigation of bintrafusp alfa in GBM.

A phase II trial of radiation and cetuximab followed by irinotecan/cetuximab for children with newly diagnosed diffuse pontine tumors and high-grade astrocytomas.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 10030-10030 ◽  
Author(s):  
Margaret Macy ◽  
Mark W. Kieran ◽  
Susan N. Chi ◽  
Kenneth J. Cohen ◽  
Tobey MacDonald ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Phase 1 ◽  
Progression Free Survival ◽  
External Beam Radiation ◽  
High Grade ◽  
Newly Diagnosed ◽  
Beam Radiation ◽  
Phase 2 Trial ◽  
Correlative Studies ◽  
Grade 3

10030 Background: Diffuse intrinsic pontine gliomas (DIPG) and high-grade astrocytomas (HGA) have dismal prognoses. We previously demonstrated in a phase 1 study that cetuximab and irinotecan was a safe and tolerable regimen. Consequently, we initiated this 2-strata phase 2 trial to investigate the safety and efficacy of weekly cetuximab given with involved field external beam radiation therapy followed by 10 cycles of cetuximab and irinotecan for DIPG and HGA as determined by the 1-year progression-free survival. Methods: Eligible patients aged 3-21 years with newly diagnosed HGA or DIPG were enrolled to parallel strata. All patients received radiation therapy (5940 cGy) with concurrent cetuximab at 250mg/m2 IV weekly for 6 weeks. Following radiation, patients received cetuximab (250mg/m2 IV) weekly and irinotecan (16mg/m2/day IV) daily x 5 for two weeks every 21 days for 30 weeks. Tumor, serum, and CSF samples were collected for correlative studies. Sera collected at the onset of rash were analyzed for inflammatory and immune-related cytokines. Results: Forty-eight patients (27 DIPG, 21 HGA) were enrolled and 45 were treated (median age 8 years; range: 3–19). Toxicities were manageable; the most common adverse events were fatigue, gastrointestinal complaints, neutropenia, rash, headache, electrolyte abnormalities, elevated ALT/AST, and fever. Grade 3-4 events in ≥10% of patients were hypokalemia and lymphopenia. 4 patients experienced cetuximab-related hypersensitivity reactions (2 grade 3 reactions). The median PFS was 9.5 months (95% CI: 7.0-12.2) for HGA and 7.8 months (7.0-8.6) for DIPG with a 1-year PFS±SE of 24±10% and 25%±10% respectively. The median OS for HGA was 17.7 months (95% CI: 14.1-18.0) and 11.5 months (8.8-14.2) for DIPG. Biological correlative studies will be presented. Conclusions: Cetuximab and radiation therapy followed by cetuximab and irinotecan is well tolerated in children. Based on the 1-year PFS, this regimen may deserve further investigation in patients with DIPG. Biological correlative studies will delineate the mechanisms of the rash and possible implications for EGFR-targeted therapeutics in such patients. Clinical trial information: NCT01012609.

Safety and Efficacy of Temozolomide in Patients With Recurrent Anaplastic Oligodendrogliomas After Standard Radiotherapy and Chemotherapy

2001 ◽  
Vol 19 (9) ◽  
pp. 2449-2455 ◽  
Author(s):  
Oliver-Louis Chinot ◽  
Stephane Honore ◽  
Henry Dufour ◽  
Maryline Barrie ◽  
Dominique Figarella-Branger ◽  
...  
Keyword(s):  
Objective Response ◽  
Progression Free Survival ◽  
Complete Response ◽  
Recurrent Glioblastoma ◽  
Limited Data ◽  
Time To Progression ◽  
Recurrent Glioblastoma Multiforme ◽  
Free Survival ◽  
Grade 3 ◽  
Entire Treatment

PURPOSE: Most primary oligodendrogliomas and mixed gliomas (oligoastrocytoma) respond to treatment with procarbazine, lomustine, and vincristine (PCV), with response rates of approximately 80%. However, limited data on second-line treatments are available in patients with recurrent tumors. A novel second-generation alkylating agent, temozolomide, has recently demonstrated efficacy and safety in patients with recurrent glioblastoma multiforme and anaplastic astrocytoma. This study describes the effects of temozolomide in patients with recurrent anaplastic oligodendroglioma (AO) and anaplastic mixed oligoastrocytoma (AOA). PATIENTS AND METHODS: Forty-eight patients with histologically confirmed AO or AOA who had received previous PCV chemotherapy were treated with temozolomide (150 to 200 mg/m2/d for 5 days per 28-day cycle). The primary end point was objective response. Secondary end points included progression-free survival (PFS), time to progression, overall survival (OS), safety, and tolerability. RESULTS: Eight patients (16.7%) experienced a complete response, 13 patients (27.1%) experienced a partial response (objective response rate, 43.8%), and 19 patients (39.6%) experienced stable disease. For the entire treatment group, median PFS was 6.7 months and median OS was 10 months. For objective responders, median PFS was 13.1 months and median OS was 16 months. For complete responders, PFS was more than 11. 8 months and OS was more than 26 months. Response correlated with improved survival. Temozolomide was safe and well tolerated. Twelve patients developed grade 1/2 thrombocytopenia and three patients developed grade 3/4 thrombocytopenia. CONCLUSION: Temozolomide is safe and effective in the treatment of recurrent AO and AOA.

scholarly journals Phase 1 study of pomalidomide and dexamethasone for relapsed/refractory primary CNS or vitreoretinal lymphoma

Blood ◽  
2018 ◽  
Vol 132 (21) ◽  
pp. 2240-2248 ◽  
Author(s):  
Han W. Tun ◽  
Patrick B. Johnston ◽  
Lisa M. DeAngelis ◽  
Pamela J. Atherton ◽  
Levi D. Pederson ◽  
...  
Keyword(s):  
Overall Response Rate ◽  
Phase 1 ◽  
Central Nervous System Lymphoma ◽  
Progression Free Survival ◽  
Complete Response ◽  
Primary Objective ◽  
Collaborative Group ◽  
Free Survival ◽  
Vitreoretinal Lymphoma ◽  
Grade 3

Abstract The combination of pomalidomide (POM) and dexamethasone (DEX) was evaluated for relapsed/refractory primary central nervous system lymphoma (PCNSL) and primary vitreoretinal lymphoma (PVRL) to determine the maximal tolerated dose (MTD) of POM as the primary objective, and overall response rate (ORR), progression-free survival (PFS), and safety profile as secondary objectives. A cohorts-of-3 study design was used with a dose-escalation schedule consisting of POM (3, 5, 7, or 10 mg) orally daily for 21 days every 28 days and DEX 40 mg orally every week. After 2 cycles, POM was continued alone until disease progression, intolerance, or subject withdrawal. Following MTD determination, the MTD cohort was expanded. Twenty-five of 29 patients with the median of 3 prior treatments were eligible for assessment as per international PCNSL collaborative group criteria. The MTD of POM was 5 mg daily for 21 days every 28 days. Whole-study ORR was 48% (12 of 25; 95% confidence interval [CI], 27.8%, 68.7%) with 6 complete response (CR), 2 complete response, unconfirmed (CRu), and 4 partial response (PR). MTD cohort ORR was 50% (8 of 16; 95% CI, 24.7%, 75.4%) with 5 CR, 1 CRu, and 2 PR. Median PFS was 5.3 months (whole study) and 9 months (for responders). One patient had pseudoprogression. Grade 3/4 hematologic toxicities included neutropenia (21%), anemia (8%), and thrombocytopenia (8%). Grade 3/4 nonhematologic toxicities included lung infection (12%), sepsis (4%), fatigue (8%), syncope (4%), dyspnea (4%), hypoxia (4%), respiratory failure (8%), and rash (4%). POM/DEX treatment is feasible with significant therapeutic activity against relapsed/refractory PCNSL and PVRL. This trial was registered at www.clinicaltrials.gov as #NCT01722305.

scholarly journals A phase 1/2 study of carfilzomib in combination with lenalidomide and low-dose dexamethasone as a frontline treatment for multiple myeloma

Blood ◽  
2012 ◽  
Vol 120 (9) ◽  
pp. 1801-1809 ◽  
Author(s):  
Andrzej J. Jakubowiak ◽  
Dominik Dytfeld ◽  
Kent A. Griffith ◽  
Daniel Lebovic ◽  
David H. Vesole ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Phase 1 ◽  
Progression Free Survival ◽  
Complete Response ◽  
Survival Estimate ◽  
Frontline Treatment ◽  
Grade 3 ◽  
Dose Modifications ◽  
Require Dose

Abstract This phase 1/2 study in patients with newly diagnosed multiple myeloma (N = 53) assessed CRd—carfilzomib (20, 27, or 36 mg/m2, days 1, 2, 8, 9, 15, 16 and 1, 2, 15, 16 after cycle 8), lenalidomide (25 mg/d, days 1-21), and weekly dexamethasone (40/20 mg cycles 1-4/5+)—in 28-day cycles. After cycle 4, transplantation-eligible candidates underwent stem cell collection (SCC) then continued CRd with the option of transplantation. The maximum planned dose level (carfilzomib 36 mg/m2) was expanded in phase 2 (n = 36). Thirty-five patients underwent SCC, 7 proceeded to transplantation, and the remainder resumed CRd. Grade 3/4 toxicities included hypophosphatemia (25%), hyperglycemia (23%), anemia (21%), thrombocytopenia (17%), and neutropenia (17%); peripheral neuropathy was limited to grade 1/2 (23%). Most patients did not require dose modifications. After a median of 12 cycles (range, 1-25), 62% (N = 53) achieved at least near-complete response (CR) and 42% stringent CR. Responses were rapid and improved during treatment. In 36 patients completing 8 or more cycles, 78% reached at least near CR and 61% stringent CR. With median follow-up of 13 months (range, 4-25 months), 24-month progression-free survival estimate was 92%. CRd was well tolerated with exceptional response rates. This study is registered at http://www.clinicaltrials.gov as NCT01029054.

scholarly journals CTIM-32. PHASE II AND BIOMARKER STUDY OF PEMBROLIZUMAB OR PEMBROLIZUMAB PLUS BEVACIZUMAB FOR RECURRENT GLIOBLASTOMA PATIENTS

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii40-ii40
Author(s):  
David Reardon ◽  
Annette Molinaro ◽  
Katherine Peters ◽  
Jennifer Clarke ◽  
Justin Jordan ◽  
...  
Keyword(s):  
Gene Expression Signature ◽  
Progression Free Survival ◽  
Recurrent Glioblastoma ◽  
Nano Scale ◽  
Programmed Death ◽  
Plasma Cytokines ◽  
Duration Of Response ◽  
Programmed Death 1 ◽  
Neurologic Function ◽  
Endothelial Growth Factor

Abstract PURPOSE Vascular endothelial growth factor (VEGF) is upregulated in glioblastoma and may contribute to immunosuppression. We performed a phase 2 study of pembrolizumab, a programmed death-1 (PD-1) blocking antibody alone or with the anti-VEGF antibody bevacizumab in recurrent glioblastoma with detailed analyses of biomarkers and patient neurologic function. METHODS Eighty bevacizumab-naive, recurrent glioblastoma patients were randomized to receive pembrolizumab with bevacizumab (cohort A, n=50) or pembrolizumab monotherapy (cohort B, n=30). The primary endpoint was six-month progression-free survival (PFS-6). Exploratory endpoints included evaluation of tumor PD-L1 expression, TIL density, immune activation gene expression signature and plasma cytokines with outcome. Changes in neurologic function were prospectively assessed using the Neurologic Assessment in Neuro-Oncology (NANO) scale. RESULTS Pembrolizumab alone or with bevacizumab was well tolerated but of limited benefit. For cohort A, PFS-6 was 26.0% (95% CI: 16.3, 41.5), median OS was 8.8 months (95% CI: 7.7, 14.2), ORR was 20% and median duration of response was 48 weeks. For cohort B, PFS-6 was 6.7% (95% CI: 1.7, 25.4), median OS was 10.3 months (95% CI: 8.5, 12.5) and ORR was 0%. Factors associated with worsened OS included baseline dexamethasone use and increased post-therapy plasma VEGF (cohort A) and wild-type IDH1, unmethylated MGMT and increased baseline PlGF and sVEGFR1 levels (cohort B), but tumor immune markers were not informative. The NANO scale effectively predicted neurologic function. CONCLUSIONS Although well tolerated, pembrolizumab was ineffective both as monotherapy and with bevacizumab for recurrent glioblastoma. Nonetheless, radiographic responses to combinatorial therapy were durable. Baseline dexamethasone use and plasma cytokines but not tumor immunologic biomarkers were associated with outcome. Neurologic function evaluated by the NANO scale contributed to outcome assessment.

scholarly journals Outcomes of Salvage Fractionated Reirradiation Combined With Bevacizumab for Recurrent High-grade Gliomas That Progressed After Treatment With Bevacizumab

2021 ◽  
Author(s):  
Hajime Yonezawa ◽  
Makoto Ohno ◽  
Hiroshi Igaki ◽  
Yasuji Miyakita ◽  
Masamichi Takahashi ◽  
...  
Keyword(s):  
Gastrointestinal Haemorrhage ◽  
Progression Free Survival ◽  
High Grade Glioma ◽  
High Grade ◽  
Mutation Status ◽  
Free Survival ◽  
Not Otherwise Specified ◽  
Radiological Response ◽  
High Grade Gliomas ◽  
Grade 3

Abstract Background: This study evaluated the outcomes of reirradiation combined with bevacizumab (Bev) for patients with recurrent high-grade gliomas that progressed after treatment with Bev.Methods: Between January 2015 and September 2019, 14 patients who experienced progression after Bev treatment were treated with reirradiation consisting of 25 Gy in five fractions combined with Bev (ReRT/Bev). The isocitrate dehydrogenase (IDH) 1/2 mutation status was analysed by pyrosequencing. Results: The diagnoses of 14 patients at the time of reirradiation included six cases of glioblastoma (GBM) with IDH-wildtype, four cases of GBM with IDH-mutant, one case of anaplastic astrocytoma (AA) with IDH-wildtype, one case of AA with IDH-mutant, and one case of GBM not otherwise specified (NOS), and one case of radiologically diagnosed brainstem glioma. The median overall survival (OS) and progression-free survival (PFS) times with ReRT/Bev were 6.1 months and 3.8 months, respectively. The 6-month OS and PFS rates were 54.5% and 15.7%, respectively. The median OS and PFS did not differ significantly between patients with IDH-wildtype (N=7) and IDH-mutant (N=5) (OS: 7.3 [wildtype] vs 6.0 [mutant] months, p = 0.64; PFS: 3.8 [wildtype] vs 3.7 [mutant] months, p = 0.56). The median OS and PFS did not differ significantly between patients with a diagnosis of GBM (N=6) and those with a diagnosis of non-GBM (N=7) (OS: 9.3 [GBM] vs 6.0 [non-GBM] months, p = 0.19; PFS: 4.0 [GBM] vs 3.8 [non-GBM] months, p = 0.31). Four patients (28.6%) achieved a complete or partial radiological response and three patients (21.4%) experienced improvement after ReRT/Bev. Tumor recurrences were observed in 12 patients, including 3 (21.4%) in-field recurrence; 5 (35.7%) marginal recurrence, 3 (21.4%) out-field recurrence, and 1 (7.1%) had in-field and out-field recurrence. Grade 3/4 toxicities included leukopenia in four patients (28.6%), hypertension in three (21.4%), proteinuria in one (7.1%), and gastrointestinal haemorrhage in one (7.1%) with ReRT/Bev. Conclusions: ReRT/Bev for patients with high-grade glioma who experienced progression after Bev was effective and involved acceptable toxicities.

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