eritoran (E5564)
/ Eisai
- LARVOL DELTA
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December 10, 2025
The Therapeutic Targeting Effect of Toll-Like Receptors and Their Related Signaling Pathways in Cardiomyopathy.
(PubMed, Immunol Invest)
- "Preclinical investigations demonstrate favorable outcomes from selective pathway modulation, including TLR4 antagonists (such as TAK-242 and eritoran), MyD88 pathway inhibitors, and nucleic-acid-directed TLR9 strategies. Targeting TLR signaling has strong potential to limit inflammation, curb fibrotic remodeling, and preserve cardiac function across diverse cardiomyopathies. The most promising therapeutic direction involves developing subtype-specific and cell- or pathway-targeted interventions, supported by translational research to bridge preclinical findings with clinical application."
IO biomarker • Journal • Review • Cardiomyopathy • Cardiovascular • Congestive Heart Failure • Fibrosis • Genetic Disorders • Heart Failure • Immunology • Inflammation • Obesity • MYD88 • TLR2 • TLR3 • TLR4 • TLR7 • TLR9
October 16, 2025
Synthesis and Docking Studies of Glycolipids Inspired by Bacteroides fragilis Lipid A.
(PubMed, Molecules)
- "Docking results reveal that Tetra C-1 exhibits more favorable antagonist binding characteristics compared to the well-studied TLR4 antagonist Eritoran. This work highlights a microbiota-informed strategy for the development of novel TLR4 antagonists, potentially enabling targeted modulation of innate immunity for therapeutic applications in inflammatory diseases and as vaccine adjuvants."
Journal • Immunology • Inflammation • Septic Shock • TLR4
July 10, 2025
IG A DEFICIENCY IS NOT ASSOCIATED WITH HIGHER LIVER-RELATED EVENTS IN MASLD/MASH PATIENTS: A MULTI-CENTER ANALYSIS
(UEGW 2025)
- "No patients from our study developed cirrhosis.Clinical Outcomes MASLD/MASH with IgA Deficiency vs MASLD/MASH controlOutcomesMASLD/MASH with IgA DeficiencyMASLD/MASH controlHR (95% CI)IncludedEventsIncludedEventsHCC67310674101.01 (0.14, 7.19)Hepatic decompensation64614653160.87 (0.42, 1.78)Mortality67229673251.15 (0.67, 1.96)MACE55643550241.79 (1.09, 2.96)CKD51548527540.90 (0.61, 1.33)Abbreviations: MASLD metabolic dysfunction-associated steatotic liver disease; MASH metabolic dysfunction-associated steatohepatitis; HCC hepatocellular carcinoma; MACE major adverse cardiovascular events; CKD chronic kidney disease; HR, hazard ratio; CI, confidence interval; AE, adverse events... Conversely to the expected increase in the liver-related outcomes, IgA deficient patients had no significant risk. Normally, IgA promotes fibrosis through the IgA-FcR signaling axis, and given that IgA is deficient, this condition can theoretically alter the immune landscape in MASLD. Contrarily,..."
Clinical • Addiction (Opioid and Alcohol) • Cardiovascular • Chronic Kidney Disease • Fibrosis • Hepatocellular Cancer • Hepatology • Immunology • Liver Failure • Metabolic Dysfunction-Associated Steatohepatitis • Metabolic Dysfunction-Associated Steatotic Liver Disease • Nephrology • Renal Disease • Solid Tumor
March 25, 2025
Dietary emulsifier carboxymethylcellulose-induced gut dysbiosis and SCFA reduction aggravate acute pancreatitis through classical monocyte activation.
(PubMed, Microbiome)
- "This study reveals the detrimental impact of CMC on AP due to gut dysbiosis, with Akkermansia muciniphila or butyrate offering potential therapeutic avenues for counteracting CMC-induced AP exacerbation. Video Abstract."
Journal • Inflammation • Pancreatitis • Transplantation
November 07, 2024
Population dynamics of sympatric Phortica spp. and first record of stable presence of Phortica oldenbergi in a Thelazia callipaeda-endemic area of Italy.
(PubMed, Parasit Vectors)
- "For the first time, this study analysed several ecological aspects of Phortica species coexisting in a T. callipeada endemic area, highlighting different behaviors in the same environment and their vectorial role. Notably, this is also the first report of the presence of P. oldenbergi in Italy and P. okadai in Europe, underscoring the importance of extensive sampling for detecting potential vectors and alien species with direct implications for vector-borne disease epidemiology."
Journal • Infectious Disease
October 25, 2024
THE EFFECT OF TLR4 INHIBITOR AGENTS ON SIZE OF INFARCTION VOLUME AND NEUROLOGICAL FUNCTIONS IN THE RODENT ISCHEMIC STROKE MODELS: A SYSTEMATIC REVIEW
(WSC 2024)
- "Administration of MTS510 as an anti-TLR4 antibody, miR-542-3p as a TLR4 expression inhibitor, ApTLR#4F and ApTLR#4FT as TLR4-blocking DNA aptamers, TAK-242 and Eritoran (E5564) as TLR4 antagonists, and intracerebroventricular injection of Resatorvid as a TLR4-NOX4 signal inhibitor on the MCAO mice model showed a significant reduction in infarction volume and improvement in neurological function. Conclusions These findings indicate to potential strategies for employing anti-TLR4 agents in various inhibitory categories to cure cerebral ischemic injury along with reperfusion therapy."
IO biomarker • Preclinical • Review • Cardiovascular • Ischemic stroke • Reperfusion Injury • MIR542 • NOX4 • TLR4
August 20, 2024
Optimization of a Lethal, Combat-Relevant Model of Sterile Inflammation in Mice for Drug Candidate Screening.
(PubMed, Mil Med)
- "We optimized a TBX mouse model of SIRS/MODS for the purpose of evaluating novel therapeutic interventions to prevent trauma-related pathophysiologies in wounded Service Members. Negative effects of K/X on lethality of TBX should be further evaluated, particularly in the light of widespread use of ketamine in treatment of pain. By mimicking muscle crush, bone fracture, and necrosis, the TBX model has pleiotropic effects on physiology and immunology that make it uniquely valuable as a screening tool for the evaluation of novel therapeutics against trauma-induced SIRS/MODS."
Journal • Preclinical • Anesthesia • Immunology • Inflammation • Musculoskeletal Diseases • Orthopedics • Pain • Systemic Inflammatory Response Syndrome • TLR4
April 25, 2024
On the right TRACK: Providing comprehensive genomic profiling (CGP) and molecular tumor board (MTB) for patients (pts) with rare cancers.
(ASCO 2024)
- P=N/A | " Pts with rare cancers (incidence<6/100,000) were enrolled and consented remotely (WCG IRB 1287011)... A fully remote, advocacy driven, national precision genomics trial is feasible for managing rare cancers. CGP with expert MTB review can identify potentially targetable alterations and inform therapeutic options."
Clinical • Tumor mutational burden • Biliary Cancer • Cholangiocarcinoma • Gastrointestinal Cancer • Hematological Disorders • Microsatellite Instability • Oncology • Solid Tumor • CDKN2A • CDKN2B • CHEK2 • DNMT3A • IDH1 • KRAS • MSI • MTAP • TMB • TP53
May 19, 2024
Copper exposure induces inflammation and PANoptosis through the TLR4/NF-κB signaling pathway, leading to testicular damage and impaired spermatogenesis in Wilson disease.
(PubMed, Chem Biol Interact)
- "Copper chelator-penicillamine and toll-like receptor 4 (TLR4) inhibitor-eritoran were used to intervene in TX mice in our animal experiment methods...PANoptosis in the testis of TX mice was also reversed. Our study indicated that pathological copper exposure induces inflammation and PANoptosis through the TLR4/NF-κB signaling pathway, leading to toxic testicular damage and impaired spermatogenesis in WD."
IO biomarker • Journal • Genetic Disorders • Hepatology • Inflammation • Metabolic Disorders • Movement Disorders • TLR4
March 20, 2024
Neuroenhancement and mental health in students from four faculties - a cross-sectional questionnaire study.
(PubMed, GMS J Med Educ)
- "Of the 5564 students who were invited to participate, 1010 completed the questionnaire (18.2%)...NE was used in particular during preparations for exams, to enhance performance, and/or to regulate emotions, most commonly through caffeine tablets, cannabis, and methylphenidate. NE was associated with risky use of alcohol or tobacco, and to a lesser extent with ADHD symptoms and stress experience. Students are at risk of substance abuse and NE. Effective stress management and prevention approaches as well as low-threshold services are needed to identify and support students with risk profiles."
Journal • ADHD (Impulsive Aggression) • Attention Deficit Hyperactivity Disorder • CNS Disorders • Depression • Mood Disorders • Psychiatry • Substance Abuse
February 28, 2024
REMAP-CAP: Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia
(clinicaltrials.gov)
- P3 | N=20000 | Recruiting | Sponsor: UMC Utrecht | N=10000 ➔ 20000
Enrollment change • Infectious Disease • Influenza • Novel Coronavirus Disease • Pneumonia • Respiratory Diseases
July 27, 2023
Quality of life (QoL) and toxicity in patients (pts) with hormone receptor-positive, HER2-negative early breast cancer (HR+, HER2– eBC) treated with adjuvant (adj) endocrine therapy (ET) in the CANcer TOxicities (CANTO) study
(ESMO 2023)
- P=N/A | "Results Of the 5564 pts who met the inclusion criteria (median age: 57 yrs), 63% were post-menopausal and 52% had stage I eBC at diagnosis...This study confirmed long-term toxicity of ET, particularly pain. Better management of symptoms and supportive interventional strategies are needed to further improve QoL in eBC."
Clinical • HEOR • Breast Cancer • HER2 Breast Cancer • HER2 Negative Breast Cancer • Hormone Receptor Breast Cancer • Hormone Receptor Positive Breast Cancer • Oncology • Solid Tumor • HER-2
June 05, 2023
REMAP-CAP: Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia
(clinicaltrials.gov)
- P3 | N=10000 | Recruiting | Sponsor: UMC Utrecht | Trial completion date: Dec 2025 ➔ Feb 2028 | Trial primary completion date: Dec 2023 ➔ Feb 2026
Trial completion date • Trial primary completion date • Infectious Disease • Influenza • Novel Coronavirus Disease • Pneumonia • Respiratory Diseases
March 30, 2023
The TLR4/NF-κB signaling pathway-mediated type 2 skewing of T helper cell in cough variant asthma was counteracted by ethanol extract of Anacyclus pyrethrum root.
(PubMed, Immunobiology)
- "Subsequently, we proved that TLR4 antagonist E5564 played a similar improvement role to EEAP in Th1/Th2 imbalance, while combination of TLR4 agonist LPS and EEAP abolished the inhibitory effect of EEAP on Th2 polarization in Th2-induced CD4T cells...In a word, EEAP restores Th1/Th2 balance in CVA through restraining the TLR4/NF-кB signaling pathway. This study may contribute to the clinical application of EEAP in CVA-related disease."
Journal • Asthma • Cough • Immunology • Inflammation • Pulmonary Disease • Respiratory Diseases • IFNG • IL13 • IL2 • IL4 • IL5 • IL6 • NF-κβ • TLR4
September 17, 2022
Quantitative Proteomic Screening Uncovers Diagnostic and Monitoring Serum Biomarkers of Ankylosing Spondylitis
(ACR Convergence 2022)
- "Figure 1... We identified multiple candidate AS diagnostic and disease activity monitoring serum biomarkers using a comprehensive proteomic screen. Enrichment analysis identified key pathways in AS diagnosis and monitoring. Lasso regression identified candidate diagnostic serum biomarker panels with modest predictive ability."
Biomarker • Ankylosing Spondylitis • Immunology • Inflammatory Arthritis • Rheumatology • Seronegative Spondyloarthropathies • IL10
September 17, 2022
Increasing Incidence of Large Artery Manifestations in Patients with Giant Cell Arteritis, a Population-based Cohort over 70 Years
(ACR Convergence 2022)
- "Incidence of large artery manifestations (mainly large artery stenosis) has increased over time likely from increased awareness and greater use of imaging studies. The incidence of aortic aneurysm/dissection has not changed over the last 7 decades. Mortality improvements may be due to earlier detection and identification of large artery manifestations.Figure 1: Cumulative incidence for time to any large artery manifestation in patients with incident GCA 1950-2016 (i.e., earliest of large artery stenosis or aortic aneurysm or aortic dissection) adjusted for the competing risk of death."
Clinical • Cardiovascular • Fatigue • Giant Cell Arteritis • Immunology
September 17, 2022
Increasing Incidence of Large Artery Manifestations in Patients with Giant Cell Arteritis, a Population-based Cohort over 70 Years
(ACR Convergence 2022)
- "Incidence of large artery manifestations (mainly large artery stenosis) has increased over time likely from increased awareness and greater use of imaging studies. The incidence of aortic aneurysm/dissection has not changed over the last 7 decades. Mortality improvements may be due to earlier detection and identification of large artery manifestations.Figure 1: Cumulative incidence for time to any large artery manifestation in patients with incident GCA 1950-2016 (i.e., earliest of large artery stenosis or aortic aneurysm or aortic dissection) adjusted for the competing risk of death."
Clinical • Cardiovascular • Fatigue • Giant Cell Arteritis • Immunology
September 17, 2022
Is SARS-CoV-2 Associated with Worse Outcomes After Total Knee Arthroplasty?
(ACR Convergence 2022)
- "Previous SARS-CoV-2 infection was not associated with worse pain or function 6 months after TKA. However, a shorter time between TKA and clinical COVID19 was correlated with worse pain and function 6 months after TKA. Larger studies are needed to evaluate whether high-risk patients may benefit from delaying elective TKA 10-12 months after COVID19."
Fatigue • Immunology • Infectious Disease • Neuralgia • Novel Coronavirus Disease • Orthopedics • Osteoarthritis • Pain • Pulmonary Disease • Respiratory Diseases • Rheumatology
September 17, 2022
Responsiveness of the Patient Reported Outcomes Measurement Information System (PROMIS) Computerized Adaptive Test (CAT) Measures in a Single Canadian Lupus Cohort
(ACR Convergence 2022)
- "PROMIS CAT detected improvement and worsening over time in most domains in patients with SLE in concordance with the external anchors, supporting its responsiveness in this population for most but not all types of change.Table 1. Cohort Characteristics at Baseline (n=108)Table 2. Results of Responsiveness at 6 MonthsSpearman correlation: *moderate: 0.3-0.7; **strong: >0.7"
Clinical • Patient reported outcomes • CNS Disorders • Depression • Fatigue • Immunology • Inflammatory Arthritis • Lupus • Mood Disorders • Pain • Psychiatry • Sleep Disorder • Systemic Lupus Erythematosus
September 17, 2022
Unsupervised Cluster Analysis of Clinical and Ultrasound Features Reveals Unique Gout Subtypes: Results from the Egyptian College of Rheumatology (ECR)
(ACR Convergence 2022)
- "SD: standard deviation; WBCs, PLT, ESR, SUA *Cluster 2 vs cluster 1, ** Cluster 3 vs cluster 1, *** Cluster 2 vs cluster 3.Definition: Obesity was defined as body mass index ≥30 kg/m2... Cluster combined clinical and ultrasound findings from adults with gout identified three differentiated subgroups. Ultrasound may help in identifying different disease phenotypes and could support more tailoring of treatments at various stages of gout. Thus, we should pay attention to the musculoskeletal ultrasound findings when treating patients with gout.Acknowledgment: We would like to thank Rasha Fawzy, and Doaa Mosaad."
Clinical • Cardiovascular • Diabetes • Dyslipidemia • Fibrosis • Genetic Disorders • Gout • Hepatology • Hypertension • Hypertriglyceridemia • Immunology • Inflammation • Inflammatory Arthritis • Metabolic Disorders • Musculoskeletal Diseases • Nephrology • Obesity • Renal Disease • Rheumatology
September 07, 2022
Effect of acute TLR4 inhibition on insulin resistance in human subjects.
(PubMed, J Clin Invest)
- P2 | "Acute TLR4 inhibition with eritoran did not protect against lipid-induced insulin resistance. Short-term eritoran administration also failed to improve obesity-associated insulin resistance. These data do not support a role for TLR4 in insulin resistance. Future studies with a different class of TLR4 inhibitors, longer drug exposure, and/or lipid-enhancing interventions richer in saturated fats may be needed to further clarify the role of TLR4 on metabolic dysfunction in humans."
Journal • Diabetes • Genetic Disorders • Metabolic Disorders • Obesity • TLR4
May 19, 2022
"Global Coalition for Adaptive Research Announces the Discontinued Evaluation of Eritoran in REMAP-COVID https://t.co/Pe6qrXN8Fa"
(@NewsFromBW)
Clinical • Novel Coronavirus Disease
April 19, 2022
Pulmonary Inflammatory Response in Lethal COVID-19 Reveals Potential Therapeutic Targets and Drugs in Phases III/IV Clinical Trials.
(PubMed, Front Pharmacol)
- "Subsequently, we identified 34 essential inflammatory proteins with both high-confidence protein interactions and shortest pathways to inflammation, cell death, glycolysis, and angiogenesis. We propose three small molecules (baricitinib, eritoran, and montelukast) that can be considered for treating severe COVID-19 symptoms after being thoroughly evaluated in COVID-19 clinical trials."
Journal • Immunology • Infectious Disease • Inflammation • Novel Coronavirus Disease • Respiratory Diseases • NLRP3
April 19, 2022
HSP60-Derived Peptide as an LPS/TLR4 Modulator: An in silico Approach.
(PubMed, Front Cardiovasc Med)
- "This observation is supported by binding energy obtained for the control antagonist Eritoran, close to those of Peptide-2...Based on the two computational techniques applied, interaction patterns were defined for Peptide-2. With these results, it is plausible to propose a peptidic approach for TLR4 modulation as a new innovative therapy to the treatment of TLR4-related cardiovascular diseases."
Journal • Atherosclerosis • Cardiovascular • Diabetes • Dyslipidemia • Immunology • Inflammation • Metabolic Disorders • Rheumatology • HSPD1 • TLR4
January 05, 2022
Contribution to development of remedies for COVID-19: focusing on Eritoran
(PubMed, Nihon Yakurigaku Zasshi)
- "Eritoran (E5564) is Eisai's in-house discovered and developed investigational Toll-Like Receptor 4 (TLR4) antagonist created with natural product organic synthesis technology. E6011 inhibits the tight binding of CD16-positive monocytes (a cell population that highly expresses the FKN receptor CX3CR1) to vascular endothelial cells, which are important for the local inflammatory response. This is expected to suppress the formation and exacerbation of vasculopathy in COVID-19."
Journal • Infectious Disease • Inflammation • Novel Coronavirus Disease • Pneumonia • Respiratory Diseases • Septic Shock • CX3CL1 • TLR4
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