scholarly journals Tying Small Changes to Large Outcomes: The Cautious Promise in Incorporating the Microbiome into Immunotherapy

2021 ◽  
Vol 22 (15) ◽  
pp. 7900
Author(s):  
Justin Chau ◽  
Jun Zhang
Keyword(s):  
Immune System ◽  
Adverse Events ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor ◽  
Major Research

The role of the microbiome in immunology is a rapidly burgeoning topic of study. Given the increasing use of immune checkpoint inhibitor (ICI) therapy in cancers, along with the recognition that carcinogenesis has been linked to dysregulations of the immune system, much attention is now directed at potentiation of ICI efficacy, as well as minimizing the incidence of treatment-associated immune-related adverse events (irAEs). We provide an overview of the major research establishing links between the microbiome to tumorigenesis, chemotherapy and radiation potentiation, and ICI efficacy and irAE development.

scholarly journals The role of macrophages type 2 and T-regs in immune checkpoint inhibitor related adverse events

Immunobiology ◽  
2020 ◽  
Vol 225 (5) ◽  
pp. 152009 ◽  
Author(s):  
Daniela Mihic-Probst ◽  
Michael Reinehr ◽  
Susanne Dettwiler ◽  
Isabel Kolm ◽  
Christian Britschgi ◽  
...  
Keyword(s):  
Adverse Events ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor

scholarly journals Role of Infliximab in Immune Checkpoint Inhibitor-Induced Pneumonitis

2020 ◽  
Vol 3 (4) ◽  
pp. 172-174
Author(s):  
Kathryn A. Lai ◽  
Ajay Sheshadri ◽  
Andres M. Adrianza ◽  
Mikel Etchegaray ◽  
Diwakar D. Balachandran ◽  
...  
Keyword(s):  
Adverse Events ◽  
Immune Checkpoint ◽  
Retrospective Cohort ◽  
Clinical Characteristics ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor ◽  
Controlled Trials ◽  
Randomized Controlled ◽  
Grade 3

ABSTRACT Introduction Since immune checkpoint inhibitor (ICI) blockade has become standard therapy for many cancers, immune-related adverse events (irAEs) have increased. ICI-pneumonitis is infrequent but potentially fatal. In cases not responsive to corticosteroids, additional immunosuppression is recommended. Data for use of infliximab in ≥ grade 3 pneumonitis is sparse. Materials and Methods A retrospective review of patients who received infliximab for ICI-pneumonitis from March 2016 to October 2018 was performed. Clinical characteristics were reviewed. Results Nine patients (44% women) with ≥ grade 3 pneumonitis were included. Concurrent/prior irAEs were present in 55%. Bronchoscopy was performed in 67%. Median corticosteroid dose was 1.2 mg/kg prior to infliximab, and time from administration of corticosteroids to infliximab ranged from 2 to 34 days. Four patients improved, but the remainder died. Conclusion We report improvement of ICI-pneumonitis with infliximab in 4 out of 9 patients in a small, retrospective cohort. Further prospective randomized controlled trials are needed.

scholarly journals Immunomodulation by the Commensal Microbiome During Immune-Targeted Interventions: Focus on Cancer Immune Checkpoint Inhibitor Therapy and Vaccination

2021 ◽  
Vol 12 ◽  
Author(s):  
Abigail L. Reens ◽  
Damien J. Cabral ◽  
Xue Liang ◽  
James E. Norton ◽  
Alex G. Therien ◽  
...  
Keyword(s):  
Immune System ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor ◽  
Treatment Success ◽  
Short Chain Fatty Acids ◽  
Targeted Interventions ◽  
Checkpoint Inhibitor Therapy ◽  
Molecular Patterns

Emerging evidence in clinical and preclinical studies indicates that success of immunotherapies can be impacted by the state of the microbiome. Understanding the role of the microbiome during immune-targeted interventions could help us understand heterogeneity of treatment success, predict outcomes, and develop additional strategies to improve efficacy. In this review, we discuss key studies that reveal reciprocal interactions between the microbiome, the immune system, and the outcome of immune interventions. We focus on cancer immune checkpoint inhibitor treatment and vaccination as two crucial therapeutic areas with strong potential for immunomodulation by the microbiota. By juxtaposing studies across both therapeutic areas, we highlight three factors prominently involved in microbial immunomodulation: short-chain fatty acids, microbe-associate molecular patterns (MAMPs), and inflammatory cytokines. Continued interrogation of these models and pathways may reveal critical mechanistic synergies between the microbiome and the immune system, resulting in novel approaches designed to influence the efficacy of immune-targeted interventions.

scholarly journals Immune‐Related Hematologic Adverse Events in the Context of Immune Checkpoint Inhibitor Therapy

2021 ◽  
Author(s):  
Antoine N. Saliba ◽  
Zhuoer Xie ◽  
Alexandra S. Higgins ◽  
Xavier A. Andrade‐Gonzalez ◽  
Harry E. Fuentes‐Bayne ◽  
...  
Keyword(s):  
Adverse Events ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor ◽  
Inhibitor Therapy ◽  
Checkpoint Inhibitor Therapy

scholarly journals Clinical Outcomes of Cetuximab and Paclitaxel after Progression on Immune Checkpoint Inhibitors in Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

Medicina ◽  
2021 ◽  
Vol 57 (11) ◽  
pp. 1151
Author(s):  
Shinsuke Suzuki ◽  
Satoshi Toyoma ◽  
Yohei Kawasaki ◽  
Koh Koizumi ◽  
Nobuko Iikawa ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Adverse Events ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Squamous Cell ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Checkpoint Inhibitor ◽  
Neck Squamous Cell Carcinoma ◽  
Grade 3

Background and Objectives: In recent years, the effectiveness of chemotherapy after immune checkpoint inhibitor administration has attracted attention in various cancers, including head and neck cancers. However, individual assessments of the administered chemotherapy regimens are insufficient. This study aimed to evaluate the efficacy and safety of chemotherapy after immune checkpoint inhibitor administration in recurrent metastatic head and neck cancer by focusing on a single regimen. Materials and Methods: We retrospectively reviewed clinical and radiological data from the medical records of 18 patients with recurrent or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) who received systemic chemotherapy with weekly cetuximab and paclitaxel (Cmab + PTX) after progression following immune checkpoint inhibitor (ICI) therapy. The objective response rate (ORR) and disease control rate (DCR) were assessed using Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. Progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan–Meier method. Adverse events (AEs) were recorded using National Cancer Institute Common Terminology Criteria for Adverse Events, version 4.0. Results: In all patients, the ORR, DCR, median PFS, and median OS were 44.4%, 72.2%, 3.8 months, and 9.6 months, respectively. Regarding AEs, three patients developed grade 3 neutropenia. Grade 3 anemia, paronychia, asthenia, and peripheral neuropathy were observed in one patient each. There were no treatment-related deaths. Conclusions: Cmab + PTX was shown to maintain high efficacy and acceptable safety for R/M HNSCC that progressed after ICI therapy. Further research is needed to establish optimal treatment sequences and drug combinations for recurrent R/M HNSCC.

KMT2C as a positive predictor for treatment of immune checkpoint inhibitor and correlation with immune infiltrates in colorectal cancer (CRC).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 3538-3538
Author(s):  
Ling Zhang ◽  
Jianping Song ◽  
Yiting Wang ◽  
Yaoxu Chen
Keyword(s):  
Colorectal Cancer ◽  
Survival Data ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Immune Cell ◽  
Checkpoint Inhibitor ◽  
Colon Adenocarcinoma ◽  
Treg Cells ◽  
Prognostic Effect

3538 Background: Lysine Methyltransferase 2C (KMT2C), a member of the myeloid/lymphoid or mixed-lineage leukemia (MLL) family, possesses histone methylation activity and is involved in transcriptional co-activation. Present study has shown that KMT2C is positive correlated with better efficacy of Immune checkpoint inhibitor (ICI) in NSCLC. However, the role of KMT2C in treatment of ICI on colorectal cancer (CRC) is still unknown. Methods: NGS (Next Generation Sequencing) was performed on 1628 CRC patients. TMB of these patients were analyzed. A public accessible cohort (Samstein2018) with data from 130 CRC patients were used to investigate the correlation between KMT2C mutation and efficacy of ICI. WES and survival data of TCGA database (1099 CRC) was used to analyze prognostic effect of KMT2C mutation. Furthermore, CIBERSORT was used to analyze the tumor-infiltrating immune cells present in COAD（colon adenocarcinoma, 404 patients）from TCGA database. Results: Among 1628 CRC patient, 230(14.1%) had KMT2C mutation. TMB was positive correlated with KMT2C mutation (Mut vs. WT, 30.75 vs. 7.26 mut/Mb, p < 0.0001). The Samstein2018 cohort showed that KMT2C mutations (15.4%, 20/130) were significantly associated with better OS (Mut vs. WT, 11.5 vs. 7.5 month, HR = 0.29; 95% CI, 0.1-0.81; P = 0.012), and a higher TMB was also observed in KMT2C-Mut group (p = 1.98e-08). In TCGA, no association between KMT2C mutation and OS was observed (P = 0.23), suggesting that was not prognostic factor. Moreover, we analyzed the relationship between KMT2C mutation and immune cell infiltration through CRC TCGA database. The results showed, in COAD, KMT2C mutation was positively correlated with the abundance of CD8+ T cells (P = 0.0014), B cells (P = 0.014), M1 macrophages (P = 0.015), neutrophil (P = 0.0019) and NK cells (P = 0.043), and negatively correlated with Treg cells (p = 0.0063). Conclusions: KMT2C has an impact on the immune microenvironment and may be used as a potential positive predictor for treatment of ICI on CRC patients. The role of KMT2C in immunotherapy warrant further studies.

Systemic Treatment of Cutaneous Adverse Events After Immune Checkpoint Inhibitor Therapy

Dermatitis ◽  
2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Alexandria M. Brown ◽  
Wylie Masterson ◽  
Jonathan Lo ◽  
Anisha B. Patel
Keyword(s):  
Adverse Events ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Systemic Treatment ◽  
Checkpoint Inhibitor ◽  
Inhibitor Therapy ◽  
Checkpoint Inhibitor Therapy
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