scholarly journals Genomic Landscape and Immunological Profile of Glioblastoma in East Asian Patients

Author(s):  
Jean Zhao ◽  
Sheng Zhong ◽  
Bo Wu ◽  
Frank Dubois ◽  
Shanshan Jiang ◽  
...  

Abstract While it is well known that Glioblastoma (GBM) shows profound inter- and intra-tumoral heterogeneity, disparities in molecular features across ancestry groups have been largely overlooked. We collected a large cohort of GBM samples from East Asian patients (EAS-GBM) and performed genomic and transcriptomic analyses of these samples (EAS-GBM, n=443). Further characterization and comparative analysis of the EAS-GBM with the predominantly European-ancestry TCGA GBM dataset (EUR-GBM, n=383) revealed differential genomic and genetic landscape and immunological profile of EAS-GBM from EUR-GBM. EAS-GBM showed an enrichment for NF1, H3F3A, TP53 and ATRX mutations compared to EUR-GBM. Transcriptomic clustering revealed distinct EAS-GBM specific subtypes, namely Proliferative (PL), Neuron-Synaptic (NS), Metabolic (MB) and Immunomodulatory (IM). Notably, the classic subtype of EUR-GBMs with EGFR as its main marker gene was absent in EAS-GBMs, Moreover, the IM subgroup in EAS-GBM with an expression profile that has been previously associated with response to immunotherapy in cancers. Together, our comprehensive characterization revealed the unique genomic and genetic features of EAS-GBMs, providing mechanistic rationale in patient stratification for molecular targeted therapy and drug development in the era of personalized medicine.

2021 ◽  
Vol 16 (3) ◽  
pp. S562-S563
Author(s):  
H. Feng ◽  
C. Xu ◽  
W. Wang ◽  
D. Wang ◽  
Y. Zhu ◽  
...  

2021 ◽  
Author(s):  
Toshio Shimizu ◽  
Yasutoshi Kuboki ◽  
Chia-Chi Lin ◽  
Kan Yonemori ◽  
Tomoko Yanai ◽  
...  

2013 ◽  
Vol 24 ◽  
pp. ix48
Author(s):  
W.S. Kim ◽  
K. Venkatakrishnan ◽  
T.M. Kim ◽  
C.-C. Lin ◽  
L.S. Thye ◽  
...  

2021 ◽  
Vol 16 (10) ◽  
pp. S1214
Author(s):  
B. Song ◽  
C. Xu ◽  
W. Wang ◽  
D. Wang ◽  
Y. Zhu ◽  
...  

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e20015-e20015
Author(s):  
Kihyun Kim ◽  
Chang Ki Min ◽  
Youngil Koh ◽  
Kenichi Ishizawa ◽  
Sung-Hyun Kim ◽  
...  

e20015 Background: The Phase 3 IKEMA study (NCT03275285) demonstrated that isatuximab (Isa) plus carfilzomib and dexamethasone (Kd) significantly improved progression-free survival (PFS) compared with Kd in patients (pts) with relapsed multiple myeloma (RMM) (hazard ratio [HR] 0.53; 99% confidence interval [CI] 0.32–0.89; P= 0.0007). We evaluated the efficacy and safety of Isa-Kd in the East Asian patients (19 Japanese, 27 Korean). Methods: RMM pts who received 1-3 prior lines of therapy were stratified to receive Isa-Kd or Kd. Isa-Kd arm received Isa (10 mg/kg intravenously) weekly for 4 weeks, then every 2 weeks. Both arms received K (20 mg/m2 days 1-2, 56 mg/m2 thereafter) twice-weekly for 3 of 4 weeks, and d (20 mg) twice-weekly. Treatment continued until disease progression or unacceptable adverse events (AE). The primary endpoint was prolongation of PFS. Key secondary endpoints included; very good partial response or better (≥VGPR), complete response (CR) rate and minimal residual disease negativity (MRD–) rate. Results: East Asian pts (25 Isa-Kd, 21 Kd) were randomized. Pt characteristics were similar in the East Asian subgroup compared with the intent to treat (ITT) population (N = 302). Median age (Isa-Kd 64.0 [range 45–83] years vs Kd 60.0 [range 33–73] years); median prior lines Isa-Kd 2.0 (range 1–3) vs Kd 1.0 (range 1–3); refractory to lenalidomide 16.0% Isa-Kd vs 47.6% Kd; refractory to PI 20.0% Isa-Kd vs 33.3% Kd; high-risk cytogenetics 48.0% Isa-Kd vs 42.9% Kd. After a median follow-up of 20.7 months, the addition of Isa to Kd improved ≥VGPR, CR and MRD– rates (Table). The HR 0.64 (95%CI: 0.231-1.764) for disease progression or death favored Isa-Kd. Grade ≥3 AEs were observed in 79.2% Isa-Kd vs 55.0% Kd pts, serious TEAEs in 45.8% Isa-Kd vs 50.0% Kd; TEAEs leading to treatment discontinuation were lower in the Isa-Kd group (4.2% Isa-Kd vs 10.0% Kd). Overall, 64.0% Isa-Kd vs 42.9% Kd pts were still receiving treatment. Conclusions: Efficacy and safety results of Isa-Kd in East Asian pts are consistent with the results of the overall IKEMA population, in which significantly better efficacy (PFS, CR, ≥VGPR and MRD– rate) was reported in favor of Isa-Kd without an increase in the number of patients with serious TEAEs or discontinuations. Isa-Kd is a potential treatment option for East Asian pts with RMM. Clinical trial information: NCT03275285. [Table: see text]


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