Omnitram 治疗神经病理性疼痛的 II 期临床评价-猫眼课题宝

Omnitram 治疗神经病理性疼痛的 II 期临床评价

批准号：

9317459

负责人：

STUART J KAHN

金额：

$65.72万

依托单位：

SYNTRIX BIOSYSTEMS, INC.

依托单位国家：

美国

项目类别：

财政年份：

2015

资助国家：

美国

项目状态：

已结题

起止时间：

2015-08-01 至 2020-07-31

来源：

https://reporter.nih.gov/project-details/9317459

关键词：

Absence of pain sensation Adjuvant Adopted Adverse effects Affect Agonist Analgesics Anticonvulsants Antidepressive Agents CYP2D6 gene Clinical Clinical Research Clinical Trials Combined Modality Therapy Complex Regional Pain Syndromes Cross-Over Studies Cross-Over Trials Cyclic GMP Diabetic Neuropathies Double-Blind Method Drug Kinetics Esthesia Exhibits France Funding Generic Drugs Germany Grant HIV Human Incidence Individual Investments Italy Japan Low Back Pain Malignant Neoplasms Metabolic Metabolism Methods Modeling National Institute of Drug Abuse Neuropathy Norepinephrine Opiate Addiction Opioid Opioid Receptor Oral Pain Pain management Painless Patient Care Patients Peripheral Nerves Pharmaceutical Preparations Pharmacologic Substance Pharmacology Pharmacotherapy Phase Physicians Placebo Control Placebos Plasma Population Postherpetic neuralgia Postoperative Period Production Public Health Randomized Randomized Clinical Trials Refractory Reporting Request for Proposals Resistance Risk Safety Sales Small Business Innovation Research Grant Spain Stimulus Symptoms Tablets Target Populations Testing Tramadol United Kingdom United States clinically relevant cost diabetic double-blind placebo controlled trial duloxetine economic cost effective therapy enantiomer experience genotoxicity improved inhibitor/antagonist interest mu opioid receptors novel painful neuropathy pregabalin programs public health relevance research clinical testing reuptake success systematic review

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DESCRIPTION (provided by applicant): Neuropathic pain is caused by damage to the peripheral nerves, as occurs in diabetic neuropathy. Neuropathic pain is difficult to treat, and many patients have pain that is refractory to existing treatments. Omnitram is a novel mixed-mechanism analgesic developed by Syntrix that consists of the (-) and (+) enantiomers of O-desmethyltramadol. The (+)-enantiomer is a potent µ-opioid receptor agonist, while the (-)- enantiomer is a norepinephrine reuptake inhibitor that synergizes with the (+)-enantiomer. Omnitram is inherently an opioid-sparing opioid-adjuvant combination therapy that is predicted to have low abuse potential. O-desmethyltramadol is the primary metabolite (M1) of tramadol. Omnitram provides the same net pharmacology as tramadol, but in contrast to tramadol, does not require metabolism by cytochrome P450 2D6 (CYP2D6) for its activity (i.e. it is metabolism-independent). Individuals who are CYP2D6 poor metabolizers (PMs) fail to obtain pain relief from tramadol. The "real world" incidence of CYP2D6 PM status in patients on polypharmacotherapy is as high as 1 in 3. Omnitram is therefore an opportunity to develop an "improved tramadol" that is effective in all patients irrespective of their CYP2D6 metabolic status. Omnitram successfully completed a Phase 1b randomized, double-blind, placebo-controlled trial that demonstrated Omnitram provided significant analgesia compared to placebo in an experimental pain model in healthy subjects. This Fast-Track application aims to further the success of the Omnitram program by demonstrating analgesic efficacy in patients suffering from neuropathic pain due to diabetic neuropathy. A Cochrane systematic review concluded that tramadol is an effective treatment for neuropathic pain with efficacy similar to that reported for antidepressants and anticonvulsants. Omnitram provides the same net pharmacology as tramadol and is therefore predicted to be efficacious in treating neuropathic pain.

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