Funded Projects

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Project # Project Title Sort descending Research Focus Area Research Program Administering IC Institution(s) Investigator(s) Location(s) Year Awarded
3U44NS115692-01S1
Development and Optimization of MNK Inhibitors for the Treatment of Neuropathic Pain Preclinical and Translational Research in Pain Management Discovery and Validation of Novel Targets for Safe and Effective Treatment of Pain NINDS 4E THERAPEUTICS INC. SAHN, JAMES JEFFREY Austin, TX 2020
NOFO Title: Notice of Special Interest for HEAL Initiative: Request for Administrative Supplements to Existing Grants for Identification and Validation of New Pain and Opioid Use Disorder Targets within the Understudied Druggable Genome
NOFO Number: NOT-TR-20-008
Summary:

There is an urgent unmet need for more efficacious analgesics that act via a non-opioid pathway. Mitogen Activated Protein Kinase-interacting kinase 2 (MNK2) is an enzyme that has been implicated in pain signaling, and there is compelling evidence that inhibiting MNK2 has significant pain-reducing effects with few side-effects. Since MNK2 selective inhibitors have not yet been identified, selective inhibition of MNK2 with a small molecule has not been possible. The development of such compounds will enable studies that will illuminate key differences between MNK2 and MNK1. More importantly, from a therapeutic standpoint, highly selective MNK2 inhibitors may prove to have enhanced efficacy and a more favorable side-effect profile than molecules that inhibit both MNK2 and MNK1. This project will support the design and synthesis of at least one MNK2 inhibitor, with >100-fold selectivity over MNK1, that may be developed into a lead compound for treating neuropathic pain.

1U44NS115692-01
Development and Optimization of MNK Inhibitors for the Treatment of Neuropathic Pain Preclinical and Translational Research in Pain Management Development and Optimization of Non-Addictive Therapies to Treat Pain NINDS 4E THERAPEUTICS INC. SAHN, JAMES JEFFREY Austin, TX 2019
NOFO Title: HEAL Initiative: Optimization of Non-addictive Therapies [Small Molecules and Biologics] to Treat Pain - (U44 Clinical Trial Not Allowed)
NOFO Number: RFA-NS-19-020
Summary:

MNK-eIF4E signaling is activated in nociceptors upon exposure to pain or peripheral nerve injury, promoting cytokines and growth factors and increasing nociceptor excitability, which leads to neuropathic pain. Genetic or pharmacological inhibition of MNK signaling blocks and reverses nociceptor hyperexcitability as well as behavioral signs of neuropathic pain. A clinical phase drug for cancer shows strong specificity as an MNK inhibitor but requires optimization because MNK inhibition in the central nervous system (CNS) may lead to depression, an unacceptable side effect for a neuropathic pain drug. The research team plans a targeted medicinal chemistry and screening campaign directed at generating a MNK-inhibitor-based neuropathic pain treatment with the goal of restricting its CNS penetration while retaining potency, specificity, and in vivo bioavailability and efficacy.

1R61AT012282-01
Development and Validation of a Multimodal Ultrasound-Based Biomarker for Myofascial Pain Clinical Research in Pain Management Discovery and Validation of Biomarkers, Endpoints, and Signatures for Pain Conditions NCCIH UNIVERSITY OF PITTSBURGH AT PITTSBURGH WASAN, AJAY D (contact); KIM, KANG ; PU, JIANTAO Pittsburgh, PA 2022
NOFO Title: HEAL Initiative: Developing Quantitative Imaging and Other Relevant Biomarkers of Myofascial Tissues for Clinical Pain Management
NOFO Number: RFA-AT-22-003
Summary:

Pain in the muscles and surrounding connective tissues (myofascial pain) can affect many regions of the body and is a key component of chronic low back pain. Patients with chronic low back pain have a range of musculoskeletal problems perpetuating their pain. There is a significant clinical need to identify the components of myofascial pain in people with chronic low back pain. Advances in ultrasound technology have allowed researchers to identify several differences in muscle and connective tissues related to myofascial pain. This project will develop and validate an ultrasound-based biomarker signature for myofascial pain in the low back. This research will also refine the biomarker signature using advanced machine learning approaches, toward future testing in in a randomized controlled clinical trial.

1UG3NS123958-01
Development of a CCKBR-targeting scFv as Therapy for Chronic Pain Patients Preclinical and Translational Research in Pain Management Development and Optimization of Non-Addictive Therapies to Treat Pain NINDS UNIVERSITY OF NEW MEXICO HEALTH SCIS CTR WESTLUND-HIGH, KARIN N (contact); ALLES, SASCHA R Albuquerque, NM 2021
NOFO Title: HEAL Initiative: Non-addictive Analgesic Therapeutics Development [Small Molecules and Biologics] to Treat Pain (UG3/UH3 Clinical Trial Optional)
NOFO Number: RFA-NS-21-010
Summary:

Cholecystokinin B receptor (CCKBR) is a molecule found in the brain that helps regulate anxiety and depression but also influences the development of tolerance to opioids. CCKBR levels are also increased in models of nerve injury-induced (neuropathic) pain. Therefore, targeting CCKBR may offer a new approach to treating neuropathic pain and the associated anxiety and depression. Researchers have developed mouse antibodies that can inactivate CCKBR. However, to be usable in humans without causing an immune response, these antibodies need to be modified to include more human sequences. This project will use a fragment of the CCKBR antibody, modify it with the addition of human antibody sequences, and then select the clones that bind most strongly and specifically to human CCKBR. These will then be tested in cell and animal models of neuropathic pain to identify the most promising candidates for further evaluation in humans.

1R43AR074369-01
Development of a fixed-dose combination therapy for the treatment of chronic musculoskeletal pain Cross-Cutting Research Small Business Programs NIAMS NEUROCYCLE THERAPEUTICS, INC. TOCZKO, MATTHEW ALEXANDER Sheridan, WY 2019
NOFO Title: PHS 2017-02 Omnibus Solicitation of the NIH, CDC, and FDA for Small Business Innovation Research Grant Applications (Parent SBIR [R43/R44])
NOFO Number: PA-17-302
Summary:

Non-steroidal anti-inflammatory drugs (NSAIDs) are a first line pharmacologic pain therapy for chronic musculoskeletal pain, and rheumatoid arthritis (RA) and moderate to severe osteoarthritis (OA) specifically. However, insufficient pain relief by NSAID monotherapy has encouraged the use of combination therapy. Combinations of NSAIDs plus weak opioids are widely used although objective evidence for efficacy is limited and they have many adverse events.  A growing body of evidence suggests that ?2/?3 subtype-selective positive allosteric modulators (PAM) of the ?- aminobutyric acid A receptor (GABAAR) may effectively restore central pain regulatory mechanisms thus providing effective relief of chronic pain with reduced prevalence and severity of side-effects.  Based on these promising preliminary studies and considerable supporting literature data, the research team will test the hypothesis that combination dosing of TPA-023B with an NSAID will work synergistically to suppress the acute and chronic pain components of chronic musculoskeletal pain. 

1R44NS119036-01
Development of a novel analgesic for mixed inflammatory and neuropathic pain states Cross-Cutting Research Small Business Programs NINDS ANABIOS CORPORATION GHETTI, ANDREA San Diego, CA 2021
NOFO Title: HEAL Initiative: Development of Therapies and Technologies Directed at Enhanced Pain Management (R43/R44 – Clinical Trial Not Allowed)
NOFO Number: RFA-NS-20-011
Summary:

As prescription opioid drug abuse and overdose-related deaths continue to skyrocket in the United States, the need for new and more effective non-addictive pain drugs to treat chronic pain remains critical. This research is conducting studies in animal models of a small molecule that has high potential to treat chronic pain conditions associated with neuropathy and/or inflammation. The goal of this project is to conduct dosing and other studies leading up to an animal model study of the potential drug in a toxicology study for 28 days. Results may lead to Investigative New Drug regulatory clearance to begin clinical studies to validate the potential drug’s efficacy and safety.

1R43NS110117-01
Development of a novel anti-migraine therapeutics Cross-Cutting Research Small Business Programs NINDS ADEPTHERA, LLC HSU, SHEAU-YU TEDDY Palo Alto, CA 2019
NOFO Title: PHS 2018-02 Omnibus Solicitation of the NIH, CDC, and FDA for Small Business Innovation Research Grant Applications (Parent SBIR [R43/R44] Clinical Trial Not Allowed)
NOFO Number: PA-18-574
Summary:

New approaches that can effectively ameliorate acute and chronic migraine pain are urgently needed. Due to its critical roles in inducing migraine pain, CGRP and its receptor complex, the calcitonin receptor-like receptor (CLR) and receptor activity-modifying protein 1 (RAMP1) have been targeted for migraine treatment. A new strategy for targeting the CGRP-mediated signaling pathway is needed to meet the medical need of migraine patients. The team developed a group of long-acting CGRP/RAMP1-specific peptide super-antagonists that form gels in situ in aqueous solution. Based on this exciting finding, the investigators propose to develop and identify the most potent antagonistic analog candidates (Aim 1), and characterize the pharmacokinetics of gel depots made of the selected candidates in vivo (Aim 2). This feasibility study is needed to explore the translational potential of these newly invented super-antagonists for the treatment of chronic migraine in combination with conventional migraine agents. 

1R43NS125643-01
Development of an intranasal, direct to nerve treatment for headache disorders Cross-Cutting Research Small Business Programs NINDS Olfax, LLC BECKWITH, JONATHAN G (contact); COOK, JASON T Asheville, NC 2022
NOFO Title: HEAL Initiative: Development of Therapies and Technologies Directed at Enhanced Pain Management (R43/R44 – Clinical Trial Not Allowed)
NOFO Number: RFA-NS-20-011
Summary:

About 14% of U.S. adults report experiencing migraine symptoms within any given 3-month period, making it the second most disabling illness in the world. Nonspecific pain medications used in migraine (e.g., acetaminophen, nonsteroidal inflammatory drugs, opioids) are often not effective for severe migraine symptoms or cause significant adverse effects. A research team of migraine care specialists, device and drug developers, and clinical research specialists has created a technology for accurately delivering self-administered migraine medication to the upper nasal cavity. The technology enables development of a self-administered therapy to provide rapid pain relief without harsh and addictive side effects of existing migraine medications. This project will establish efficacy and evaluate commercial design feasibility for this treatment.

1U18EB029351-01
Development of an MRgFUS system for precision-targeted neuromodulation of pain circuits with simultaneous functional MRI Preclinical and Translational Research in Pain Management Translating Discoveries into Effective Devices to Treat Pain NIBIB VANDERBILT UNIVERSITY MEDICAL CENTER CASKEY, CHARLES F (contact); CHEN, LI MIN ; GRISSOM, WILLIAM A Nashville, Tennessee 2019
NOFO Title: HEAL Initiative: Translational Development of Devices to Treat Pain (U18 Clinical Trial Not Allowed)
NOFO Number: RFA-EB-18-003
Summary:

This project aims to develop a next-generation noninvasive neuromodulation system for non-addictive pain treatments. The research team will build an integrated system that uses magnetic resonance image-guided focused ultrasound (MRgFUS) stimulation to target pain regions and circuits in the brain with high precision. The system will use MR imaging to locate three pain targets commonly used in clinical pain treatments, to stimulate those targets with ultrasound, and to monitor responses of nociceptive pain circuits using a functional MRI readout. Three collaborating laboratories will tackle the goals of this project: (Aim 1) Develop focused ultrasound technology for neuromodulation in humans, compatible with the high magnetic fields in an MRI scanner. (Aim 2) Develop MRI technology to find neuromodulation targets, compatible with focused ultrasound transducers. (Aim 3) Validate the complete MRgFUS neuromodulation system in brain pain regions in nonhuman primates. By the end of the project, the research team will have a fully developed and validated MRgFUS system that is ready for pilot clinical trials in pain management.

1U18EB029353-01
Development of a Wireless Endovascular Nerve Stimulator for Treatment of Refractory Neuropathic Pain Preclinical and Translational Research in Pain Management Translating Discoveries into Effective Devices to Treat Pain NIBIB BAYLOR COLLEGE OF MEDICINE KAN, PETER TZE MAN; ROBINSON, JACOB T; SHETH, SUNIL Houston, TX 2019
NOFO Title: HEAL Initiative: Translational Development of Devices to Treat Pain (U18 Clinical Trial Not Allowed)
NOFO Number: RFA-EB-18-003
Summary:

For patients with neuropathic pain refractory to therapy using small molecules, modulation of specific neural structures in the central or peripheral nervous system can provide effective alternative treatments. While current Food and Drug Administration–approved devices for dorsal root ganglion (DRG) stimulation are safe and effective, there have been an unfortunate number of adverse events associated with pulse generator infections and lead migration. The research team will develop a wireless, millimeter-sized nerve stimulator that can be delivered through the vasculature and stimulate the DRG to alleviate symptoms of neuropathic pain and the associated minimally invasive delivery method. This endovascular nerve stimulation (EVNS) system depends on development and integration of key novel technologies into an endovascular stent. The magnetoelectric transducers and electronic circuits will convert wireless power and data into stimulus patterns that can trigger neural activity in the DRG via miniature electrodes. After chronic demonstration of safety and functionality in large animal models, the team will prepare for regulatory discussions with the FDA. If successful, the EVNS will provide a technology platform for treating other neuropathic pain syndromes. 

9R42NS120548-02A1
Development of KLS-13019 for Neuropathic Pain Cross-Cutting Research Small Business Programs NINDS KANNALIFE SCIENCES, INC. BRENNEMAN, DOUGLAS ERIC (contact); WARD, SARA J Lloyd Harbor, NY 2021
NOFO Title: HEAL Initiative: Development of Therapies and Technologies Directed at Enhanced Pain Management (R41/R42 Clinical Trial Not Allowed)
NOFO Number: RFA-NS-20-009
Summary:

Neuropathic pain adversely affects quality of life and remains challenging to treat, presenting high unmet medical need. One example of this type of pain, chemotherapy-induced peripheral neuropathy, is a chronic, severely debilitating consequence of cancer therapy for which there are no effective treatment strategies. This research is testing a new cannabidiol (CBD) analogue (KLS-13019) with neuroprotective properties and which has improved drug-like properties compared to CBD. This project will optimize the process to manufacture KLS-13019, develop analytical methods, optimize its formulation, evaluate its safety and toxicity, and test KLS-13019’s efficacy of in a rat model of chemotherapy-induced peripheral neuropathy.

1UG3NS115718-01
Development of MRGPRX1 positive allosteric modulators as non-addictive therapies for neuropathic pain Preclinical and Translational Research in Pain Management Development and Optimization of Non-Addictive Therapies to Treat Pain NINDS JOHNS HOPKINS UNIVERSITY TSUKAMOTO, TAKASHI Baltimore, NC 2019
NOFO Title: Optimization of Non-addictive Therapies [Small Molecules and Biologics] to Treat Pain (UG3/UH3 Clinical Trial Not Allowed)
NOFO Number: RFA-NS-19-010
Summary:

Although opioid-based analgesics have been proven effective in reducing the intensity of pain for many neuropathic pain conditions, their clinical utility is grossly limited due to the substantial risks involved in such therapy, including nausea, constipation, physical dependence, tolerance, and respiratory depression. Cumulative evidence suggests that human Mas-related G protein-coupled receptor X1 (MRGPRX1) is a promising target for pain with limited side effects due to its restricted expression in nociceptors within the peripheral nervous system; however, direct activation of MRGPRX1 at peripheral terminals is expected to induce itch side effects, limiting the therapeutic utility of orthosteric MRGPRX1 agonists. This finding led to the exploration of positive allosteric modulators (PAMs) of MRGPRX1 to potentiate the effects of the endogenous agonists at the central terminals of sensory neurons without activating peripheral MRGPRX1. An intrathecal injection of a prototype MRGPRX1 PAM, ML382, effectively attenuated evoked, persistent, and spontaneous pain without causing itch side effects. The goal of this study is to develop a CNS-penetrant small-molecule MRGPRX1 PAM that can be given orally to treat neuropathic pain conditions.

1R43NS124421-01A1
Development of Nav1.7 Monoclonal Antibodies for Treating Pain Cross-Cutting Research Small Business Programs NINDS INTEGRAL MOLECULAR RUCKER, JOSEPH BENJAMIN Philadelphia, PA 2021
NOFO Title: HEAL INITIATIVE: Development of Therapies and Technologies Directed at Enhanced Pain Management (R43/R44 - Clinical Trial Not Allowed)
NOFO Number: RFA-NS-20-011
Summary:

Many current pain relief treatments rely on use of opioid drugs. This research is conducting preclinical development on a non-addictive, non-opioid therapeutic that uses antibodies to target the sodium channel Nav1.7. This channel is known to be one of the primary routes for generating pain signals – thus it is a target for reducing pain. The antibody approach offers potential for greater specificity than small molecule approaches, potentially resulting in fewer side effects.

1UG3NS127251-01A1
Development of Pathology-Activated Drugs for Treatment of Neuropathic Pain Preclinical and Translational Research in Pain Management Development and Optimization of Non-Addictive Therapies to Treat Pain NINDS UNIVERSITY OF TX MD ANDERSON CAN CTR GRACE, PETER M (contact); ABELL, ANDREW Houston, TX 2022
NOFO Title: HEAL Initiative: Non-addictive Analgesic Therapeutics Development [Small Molecules and Biologics] to Treat Pain (UG3/UH3 Clinical Trial Optional)
NOFO Number: RFA-NS-21-010
Summary:

The medication monomethyl fumarate, approved for treating multiple sclerosis, has pain-relieving properties, but it also has side effects that affect the digestive tract and decrease levels of white blood cells, a problem known as leukopenia. This project will limit the availability of monomethyl fumarate to areas in the central nervous system associated with pain. Targeting the delivery of this drug to pain-related regions may improve its safety profile for treating neuropathic pain.

1R41NS118992-01
Development of selective calpain-1 inhibitors for chronic pain Cross-Cutting Research Small Business Programs NINDS 1910 GENETICS, INC. NWANKWO, JENNIFER Cambridge, MA 2021
NOFO Title: HEAL Initiative: Development of Therapies and Technologies Directed at Enhanced Pain Management (R43/R44 – Clinical Trial Not Allowed)
NOFO Number: NS-20-011
Summary:

The need to develop non-opioid therapeutics for chronic pain is greater than ever.  One option being explored is inhibiting the activity of calpains – enzymes that have been shown to cause pain in animal models of chronic pain.  Using an artificial intelligence (AI)-driven drug discovery platform, researchers have uncovered and validated four calpain-1 inhibitors using biochemical assays.  This study by 1910 Genetics Inc. hopes to synthesize multiple analogs of its most potent discovered calpain-1 inhibitor and determine its effectiveness against calpain-2 and certain enzymes that break down proteins.  Findings that successfully significantly inhibit calpain-1 in at least one animal model of chronic pain could lead to the first oral, central nervous system penetrating selective calpain-1 inhibitor [non-opioid therapeutic] for chronic pain.

1R61NS127285-01
Development of Therapeutic Antibodies to Target Sodium Channels Involved in Pain Signaling Preclinical and Translational Research in Pain Management Development and Optimization of Non-Addictive Therapies to Treat Pain NINDS University of California, Davis YAROV-YAROVOY, VLADIMIR M (contact); TRIMMER, JAMES S Davis, CA 2022
NOFO Title: HEAL Initiative: Planning Studies for Initial Analgesic Development [Small Molecules and Biologics] (R61 Clinical Trial Not Allowed)
NOFO Number: NS21-029
Summary:

Voltage-gated sodium channels such as Nav1.7, Nav1.8, and Nav1.9 transmit pain signals in nerve fibers and are molecular targets for pain therapy. While Nav channels have been validated as pharmacological targets for the treatment of pain, available therapies are limited due to incomplete efficacy and significant side effects. Taking advantage of recent advances in structural biology and computational-based protein design, this project aims to develop antibodies to attach to Nav channels and freeze them in an inactive state. These antibodies can then be further developed as novel treatments for chronic pain.

1UH2AR076731-01
Development, Evaluation and Translation of Robotic Apparel for Alleviating Low Back Pain Clinical Research in Pain Management Back Pain Consortium Research Program NIAMS HARVARD UNIVERSITY WALSH, CONOR Cambridge, MA 2019
NOFO Title: HEAL Initiative: Back Pain Consortium (BACPAC) Research Program Technology Research Sites (UH2/UH3 Clinical Trial Optional)
NOFO Number: RFA-AR-19-028
Summary:

A primary factor contributing to acute or recurrent back injury is overexertion via excessive peak and cumulative forces on the back and the primary factors involved in the progression of acute low back injury to chronic low back pain (cLBP) include maladaptive motor control strategies, muscle hyperactivity, reduced movement variability, and the development of fear cognitions. This project will focus on the development of robotic apparel with integrated biofeedback components that can reduce exertion; encourage safe, varied movement strategies; and promote recovery. Robotic apparel will be capable of providing supportive forces to the back and hip joints through adaptive control algorithms that respond to dynamic movements and becoming fully transparent when assistance is no longer needed. This technology can be used to prevent cLBP caused by overexertion and provide a new tool to physical therapists and the clinical community to enhance rehabilitation programs.

1R61NS113316-01
Discovery and analytical validation of Inflammatory bio-signatures of the human pain experience Preclinical and Translational Research in Pain Management Discovery and Validation of Biomarkers, Endpoints, and Signatures for Pain Conditions NINDS THE UNIVERSITY OF TEXAS HEALTH SCIENCE CENTER AT HOUSTON PROSSIN, ALAN RODNEY Houston, TX 2019
NOFO Title: Discovery of Biomarkers, Biomarker Signatures, and Endpoints for Pain (R61/R33 Clinical Trial Optional)
NOFO Number: RFA-NS-18-041
Summary:

Postoperative pain is a major contributor to the current opioid epidemic. Novel objective measures capable of personalizing pain care will enhance medical precision in prevention and treatment of postoperative pain. This project seeks to discover and validate a novel biosignature of the human pain experience, based on underlying IL-1 family cytokine activity and associated brain endogenous opioid function, that is readily quantifiable and clinically translatable to prevention and treatment of postoperative pain states. Specific aims will assess whether the novel biosignature will predict 1) experimentally induced pain during an experimental nociceptive pain challenge; 2) postoperative pain states with accuracy >75%, accounting for a wide range of variance in the human pain experience; and 3) postoperative pain states in an expanded clinically enriched sample.

1RF1NS113881-01
Discovery and validation of a new long noncoding RNA as a novel target for neuropathic pain Preclinical and Translational Research in Pain Management Discovery and Validation of Novel Targets for Safe and Effective Treatment of Pain NINDS RBHS-NEW JERSEY MEDICAL SCHOOL TAO, YUAN-XIANG Newark, NJ 2019
NOFO Title: Discovery and Validation of Novel Targets for Safe and Effective Pain Treatment (R01 Clinical Trial Not Allowed)
NOFO Number: RFA-NS-18-043
Summary:

Identification of new targets and mechanisms underlying chronic neuropathic pain is essential for the discovery of novel treatments and preventative tactics for better neuropathic pain management. A recent exploration of next-generation RNA sequencing identified a large, native, full-length long noncoding RNA (lncRNA) in mouse and human dorsal root ganglion (DRG). It was named as nerve injury-specific lncRNA (NIS-lncRNA), since its expression was found increased in injured DRGs, in response to peripheral nerve injury, but not in response to inflammation. Preliminary findings revealed that blocking the nerve injury-induced increases in DRG NIS-lncRNA levels ameliorated neuropathic pain. This project will validate NIS-lncRNA as a therapeutic target in animal models of neuropathic pain and in cell-based functional assays utilizing human DRG neurons. Completion of this proposal will advance neuropathic pain management and might provide a novel, non-opioid pain therapeutic target.

1R01NS113257-01
Discovery and validation of a novel orphan GPCR as a target for therapeutic intervention in neuropathic pain Preclinical and Translational Research in Pain Management Discovery and Validation of Novel Targets for Safe and Effective Treatment of Pain NINDS St. Louis University SALVEMINI, DANIELA St. Louis, MO 2019
NOFO Title: Discovery and Validation of Novel Targets for Safe and Effective Pain Treatment (R01 Clinical Trial Not Allowed)
NOFO Number: RFA-NS-18-043
Summary:

Neuropathic pain conditions are exceedingly difficult to treat, and novel non-opioid analgesics are desperately needed. Receptomic and unbiased transcriptomic approaches recently identified the orphan G-protein coupled receptor (oGPCR), GPR160, as a major oGPCR whose transcript is significantly increased in the dorsal horn of the spinal cord (DH-SC) ipsilateral to nerve injury, in a model of traumatic nerve-injury induced neuropathic pain caused by constriction of the sciatic nerve in rats (CCI). De-orphanization of GPR160 led to the identification of cocaine- and amphetamine-regulated transcript peptide (CARTp) as a ligand which activates pathways crucial to persistent pain sensitization. This project will test the hypothesis that CARTp/GPR160 signaling in the spinal cord is essential for the development and maintenance of neuropathic pain states. It will also validate GPR160 as a non-opioid receptor target for therapeutic intervention in neuropathic pain, and characterize GPR160 coupling and downstream molecular signaling pathways underlying chronic neuropathic pain.

1R61NS113329-01
Discovery of Biomarker Signatures Prognostic for Neuropathic Pain after Acute Spinal Cord Injury Preclinical and Translational Research in Pain Management Discovery and Validation of Biomarkers, Endpoints, and Signatures for Pain Conditions NINDS UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON HERGENROEDER, GEORGENE W Houston, TX 2019
NOFO Title: Discovery of Biomarkers, Biomarker Signatures, and Endpoints for Pain (R61/R33 Clinical Trial Optional)
NOFO Number: RFA-NS-18-041
Summary:

Debilitating neuropathic pain occurs in 40 percent to 70 percent of people who suffer from spinal cord injury (SCI). There are no distinguishing characteristics to identify who will develop neuropathic pain. The objective of this research is to develop a biomarker signature prognostic of SCI-induced neuropathic pain (NP). The aims of the project are to (1) identify autoantibodies in plasma samples from acute SCI patients to CNS autoantigens and determine the relationship between autoantibodies levels to the development of NP, (2) identify the autoantibody combination with maximal prognostic accuracy for the development of NP at six months after SCI, and (3) develop and optimize an assay to simultaneously measure several autoantibodies and independently validate the prognostic efficacy for NP using plasma samples collected prospectively. Establishing a panel will refine the prognostic value of these autoantibodies as biomarkers to detect who are vulnerable to NP and may be used to for development of nonaddictive pain therapeutics.

1U44NS111779-01
DISCOVERY OF NAV1.7 INHIBITORS FOR THE TREATMENT OF PAIN Preclinical and Translational Research in Pain Management NINDS SITEONE THERAPEUTICS, INC. MULCAHY, JOHN VINCENT; ODINK, DEBRA BOZEMAN, MT 2019
NOFO Title: Blueprint Neurotherapeutics Network (BPN): Small Molecule Drug Discovery and Development for Disorders of the Nervous System (U44 Clinical Trial Optional)
NOFO Number: PAR-18-541
Summary:

We propose to develop a safe and effective nonopioid analgesic to treat neuropathic pain that targets an isoform of the voltage-gated sodium ion channel, NaV1.7. Voltage-gated sodium channels are involved in the transmission of nociceptive signals from their site of origin in the peripheral terminals of DRG neurons to the synaptic terminals in the dorsal horn. NaV1.7 is the most abundant tetrodotoxin-sensitive sodium channel in small diameter myelinated and unmyelinated afferents, where it has been shown to modulate excitability and set the threshold for action potentials. Development of systemic NaV1.7 inhibitors has been complicated by the challenge of achieving selectivity over other NaV isoforms expressed throughout the body. We have discovered a series of potent, state-independent NaV1.7 inhibitors that exhibit >1000-fold selectivity over other human isoforms. Work conducted under this program will support advancement of a lead candidate into clinical development as a therapeutic for neuropathic pain.

1R21TR004333-01
Discovery of Novel Openers of the Understudied Human Drug Target Kir6.1 Preclinical and Translational Research in Pain Management Discovery and Validation of Novel Targets for Safe and Effective Treatment of Pain NCATS NEW YORK UNIVERSITY SCHOOL OF MEDICINE CARDOZO, TIMOTHY J New York, NY 2022
NOFO Title: Emergency Awards: HEAL Initiative-Early-Stage Discovery of New Pain and Opioid Use Disorder Targets Within the Understudied Druggable Proteome (R21 Clinical Trial Not Allowed)
NOFO Number: TR22-011
Summary:

Routine treatment of pain with prescription opioid medications may evolve into opioid use disorder, addiction, and potentially overdose. New, non-opioid molecular targets for pain are needed as a key element of responding to the opioid and overdose crisis. Ion channels are molecular gateways that convert electrical signals into physiological responses, and many have been implicated in transmitting pain signals. The ion channel Kir6.1/KCNJ8 has been linked to the control of postoperative and cancer pain. Studies in animal models show that low levels of this ion channel are evident after an injury. This research will identify compounds that can open the Kir6.1/KCNJ8 channel as potential treatment strategy for pain.

1R41NS116784-01
Discovery of T-type Calcium Channel Antagonists from Multicomponent Reactions and Their Application in Paclitaxel-induced Peripheral Neuropathy Cross-Cutting Research Small Business Programs NINDS REGULONIX, LLC KHANNA, RAJESH Tucson, AZ 2019
NOFO Title: PHS 2017-02 Omnibus Solicitation of the NIH for Small Business Technology Transfer Grant Applications (Parent STTR [R41/R42])
NOFO Number: PA-17-303
Summary:

Chemotherapy-induced peripheral neuropathy (CIPN) is detected in 64% of cancer patients during all phases of cancer. CIPN can result in chemotherapy dose reduction or discontinuation, and can also have long-term effects on the quality of life. Taxanes (like Paclitaxel) may cause structural damage to peripheral nerves, resulting in aberrant somatosensory processing in the peripheral and/or central nervous system. Dorsal root ganglia (DRG) sensory neurons as well as neuronal cells in the spinal cord are key sites in which chemotherapy induced neurotoxicity occurs. T-type Ca2+ channels are critical determinants of increased neuronal excitability and neurotransmission accompanying persistent neuropathic pain. Though Cav3.2 has been targeted clinically with small molecule antagonists, no drugs targeting these channels have advanced to phase II human clinical trials. This proposal aims to explore multicomponent reaction products, for the rapid identification of potent and selective T-type Ca2+ channel antagonists. The work proposed here is the first step in developing non-opioid pain treatments for CIPN. The team anticipates success against paclitaxel-induced chronic pain will translate into other chronic pain types as well, but CIPN provides focus for early stage proof-of-concept.

1R61NS113341-01
Discovery of the Biomarker Signature for Neuropathic Corneal Pain Preclinical and Translational Research in Pain Management Discovery and Validation of Biomarkers, Endpoints, and Signatures for Pain Conditions NINDS Tufts Medical Center HAMRAH, PEDRAM Boston, MA 2019
NOFO Title: Discovery of Biomarkers, Biomarker Signatures, and Endpoints for Pain (R61/R33 Clinical Trial Optional)
NOFO Number: RFA-NS-18-041
Summary:

Neuropathic corneal pain (NCP) causes patients to have severe discomfort and a compromised quality of life (QoL). The lack of signs observed by standard examination has resulted in misdiagnosis as dry eye disease (DED). An optical biopsy using laser in vivo confocal microscopy (IVCM) revealed that microneuromas (bulbs at the ends of severed nerves caused by buildup of molecular constituents) are present in NCP but not DED and may serve as a biomarker for NCP. The aims are to (1) use a database of more than 2,000 DED/NCP subjects and more than 500,000 IVCM images to confirm that the presence of microneuromas is an appropriate biomarker for NCP, (2) provide biological validation of microneuromas, (3) develop a validated artificial intelligence (AI) program for automated identification of microneuromas, and (4) establish the clinical utility of microneuromas observed by IVCM as a biomarker for NCP in a prospective, multicenter study.