- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03993171
31P-MRS Imaging to Assess the Effects of CNM-Au8 on Impaired Neuronal Redox State in Multiple Sclerosis. (REPAIR-MS)
A Phase 2, Open-Label, Sequential Group, Investigator Blinded Study of Magnetic Resonance Spectroscopy (31P-MRS) to Assess the Effects of CNM-Au8 for the Bioenergetic Improvement of Impaired Neuronal Redox State in Multiple Sclerosis.
Study Overview
Detailed Description
This is a single-center open-label, sequential group, investigator blinded study of the CNS metabolic effects, safety, pharmacokinetics, and pharmacodynamics of CNM-Au8 in patients who have been diagnosed with relapsing multiple sclerosis (RMS) within fifteen (15) years of Screening. Patients will be screened over up to a 6-week period.Patients who meet inclusion criteria and none of the exclusion criteria may be enrolled into the clinical study. The initial cohort of patients (Cohort 1) will begin treatment at a dose of 15mg or 30mg CNM-Au8. Upon completion of the first Treatment Period, dose(s) will be selected for the subsequent cohort (Cohort 2), based on the results of the 31P-MRS change versus baseline from the first cohort. A total of two treatment cohorts may be studied. Investigators and patients will remain blinded to study dose until the study database is formally locked. All patients will receive daily oral treatment over twelve (12) consecutive weeks during each cohort's Treatment Period.
There will be three study periods per treatment cohort:
- A (6) six week screening period (Screening Period);
- A (12) twelve-week treatment period (Treatment Period);
- A (6) six-week follow-up period (End-of-Study Assessment).
Patients will be contacted by phone to assess safety and tolerability at Week 2. At Weeks 4, 8, and 12 patients will return to the clinic to complete PK, PD, visual acuity testing, and safety assessments. At the Baseline and Week 12 visits patients will complete 31P-MRS, MRI, and OCT imaging assessments, the 9-Hole Peg Test, Timed 25-Foot Walk Test, Visual Acuity (high and low contrast letter/visual acuity) and the Symbol Digit Modalities Test (SDMT). Following treatment discontinuation at Week 12, patients will complete an end-of-study (EOS) visit at Week 18. All patients who are prematurely discontinued from treatment will complete the end-of-study visit 4-weeks after discontinuation.
Study Type
Enrollment (Estimated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Austin Rynders
- Phone Number: (801) 676-9695
- Email: info@clene.com
Study Contact Backup
- Name: Jeremy Evan, PA-C
- Phone Number: (801) 676-9695
- Email: info@clene.com
Study Locations
-
-
Texas
-
Dallas, Texas, United States, 75390
- Recruiting
- University of Texas Southwestern
-
Contact:
- Manuel Huichapa
- Phone Number: 214-645-8216
- Email: manuel.huichapa@utsouthwestern.edu
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Patients enrolled in Cohort 1 must meet the following Inclusion Criteria:
- At least 18 years of age and up to 55 years (inclusive) of age at Screening.
- Clinical diagnosis of Relapsing Multiple Sclerosis (RMS) (meeting McDonald criteria, 2017).
- Diagnosis of MS no longer than 15 years prior to Screening.
- Stable treatment with natalizumab, defined as a stable dose maintained at the standard infusion interval of 28-days (±5 days) for at least the prior six (6) months.
- Stable disease activity based on the Investigator's judgment over the prior three (3) months.
- Any hematological parameters and/or biochemical parameters that fall outside the Within Normal Limits range at Screening must be assessed as Not Clinically Significant (NCS) and deemed stable or transient in nature.
- Able to understand and give written informed consent.
Patients enrolled in Cohort 2 must meet the following Inclusion Criteria:
- Male or female, aged 18 - 70 years or age (inclusive);
- Diagnosis of primary progressive multiple sclerosis (PPMS) or nonactive secondary progressive multiple sclerosis (SPMS), according to revised 2017 McDonald criteria at the Screening visit;
- EDSS score at the Screening visit of less than or equal to 6.5 (inclusive);
- Participants must be taking either B-cell depleting therapy (e.g., ocrelizumab, rituximab) or S1P modulator therapy (e.g., siponimod) with consistent stable dosing for at least 48 weeks prior to the Screening visit;
- Any hematological parameters and/or biochemical parameters that fall outside the Within Normal Limits range at Screening must be assessed as Not Clinically Significant (NCS) and deemed stable or transient in nature; and
- Able to understand and give written informed consent.
Patients enrolled in Cohort 1 must meet the following Exclusion Criteria:
- Patients with a clinical relapse requiring systemic steroid treatment within the prior three (3) months.
- Patients treated with any other MS therapy other than natalizumab; or treated with clemastine fumarate.
- Based on the Investigator's judgment, patients with a history of significant other major medical condition that may interfere with the conduct of the study or interpretation of the study results.
- Based on the Investigator's judgment, patients who may have difficulty complying with the protocol and/or study procedures.
- History of any clinically significant abnormality in hematology, blood chemistry, ECG, or physical examination not resolved by the Baseline visit which according to Investigator can interfere with study participation.
Patients with clinically significant hepatic or renal dysfunction or clinical laboratory findings that would limit the interpretability of change in liver or kidney function, or those with low platelet counts (< 150 x 109 per liter) or eosinophilia (absolute eosinophil count of
≥500 eosinophils per microliter) at Screening.
- Patients with a prior history of, or positive serological assay for the presence of HIV infection, or laboratory evidence of active or chronic infection with hepatitis C (HCV) or hepatitis B (HBV). Note, participants who have been vaccinated for HBV and have detectable HB antibodies are not excluded unless positive for hepatitis surface antigen (HBsAg).
- Patients participating in any other investigational drug trial or using an investigational drug (within 12 weeks prior to screening and thereafter).
- Positive screen for drugs of abuse or known alcohol abuse.
- Females who are pregnant, have a positive pregnancy test, are nursing, or who plan to get pregnant during the course of this clinical trial or within 6 months of the end of this trial.
- Women of child-bearing potential, or men, who are unwilling or unable to use accepted methods of birth control during the study and for 6 months following completion of study participation.
- Patients with implanted metal objects in their body that may be affected by an MRI procedure.
- Patients who are claustrophobic or otherwise unlikely to be able to complete the MRI scanning procedures.
- Patients with a history of gold allergy.
- Patient is considered a suicide risk in the opinion of the Investigator, has previously made a suicide attempt, or is currently demonstrating active suicidal ideation. Subjects with intermittent passive suicidal ideation are not necessarily excluded based on the assessment of the Investigator.
- Any active ophthalmological cause for retinal damage other than MS (e.g. cataracts, uveitis, macular degeneration, macular exudate, macular edema, glaucoma, severe astigmatism, ocular trauma, neuromyelitis optica, ischemic optic neuropathy, congenital nystagmus, retinal detachment, amblyopia, optic disk drusen).
- Severe refractive defects: refractive errors (-5 dioptres to +5 dioptres or more in either eye or axial eye length >26 mm), hypermetropia (> 5 dioptres; cylinder > 3 dioptres); or based on the Investigator's judgment any other ophthalmic diseases that might confound the study results or optical coherence tomography assessment.
- PRN use of stimulant medications including: amphetamine, dextroamphetamine, lisdexamfetamine, methylphenidate, or modafinil; however, stimulant medications, taken on a consistent daily dose for at least 12-weeks are allowed. No changes in the dose of any stimulant medications are allowed during the study.
Patients enrolled in Cohort 2 must meet the following Exclusion Criteria:
- History of MS relapses or gadolinium-enhancing lesions seen on brain MRI scans within the five (5) years prior to the Screening visit.
- History of AQP4, MOG Ab(+) status, or documented ≥ 3 contiguous segment lesion in the spinal cord.
- Any diagnosis other than PPMS or SPMS that could explain a participant's signs and symptoms.
- Participants taking any MS disease-modifying therapy other than Bcell depleting therapy (e.g., ocrelizumab, rituximab) or S1P modulator therapy (e.g., siponimod), or not taking disease modifying therapy.
- Based on the Investigator's judgment, patients with a history of significant other major medical condition that may interfere with the conduct of the study or interpretation of the study results.
- Based on the Investigator's judgment, patients who may have difficulty complying with the protocol and/or study procedures.
- History of any clinically significant abnormality in hematology, blood chemistry, ECG, or physical examination not resolved by the Baseline visit which according to Investigator can interfere with study participation.
- Patients with clinically significant hepatic or renal dysfunction or clinical laboratory findings that would limit the interpretability of change in liver or kidney function, or those with low platelet counts (< 150 x 109 per liter) or eosinophilia (absolute eosinophil count of ≥500 eosinophils per microliter) at Screening.
- Patients with a prior history of, or positive serological assay for the presence of HIV infection, or laboratory evidence of active or chronic infection with hepatitis C (HCV) or hepatitis B (HBV). Note, participants who have been vaccinated for HBV and have detectable HB antibodies are not excluded unless positive for hepatitis surface antigen (HBsAg).
- Patients participating in any other investigational drug trial or using an investigational drug (within 12 weeks prior to screening and thereafter).
- Positive screen for drugs of abuse or known alcohol abuse.
- Females who are pregnant, have a positive pregnancy test, are nursing, or who plan to get pregnant during the course of this clinical trial or within 6 months of the end of this trial.
- Women of child-bearing potential, or men, who are unwilling or unable to use accepted methods of birth control during the study and for 6 months following completion of study participation.
- Patients with implanted metal objects in their body that may be affected by an MRI procedure.
- Patients who are claustrophobic or otherwise unlikely to be able to complete the MRI scanning procedures.
- Patients with a history of gold allergy.
- Patient is considered a suicide risk in the opinion of the Investigator, has previously made a suicide attempt, or is currently demonstrating active suicidal ideation. Subjects with intermittent passive suicidal ideation are not necessarily excluded based on the assessment of the Investigator.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Sequential Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 7.5mg CNM-Au8
7.5mg suspension of clean-surfaced, faceted, gold nanocrystals in 120ml of sodium bicarbonate buffered water
|
CNM-Au8 is a dark red/purple-colored liquid formulation consisting of a stable suspension of faceted clean surfaced elemental gold nanocrystals in buffered deionized water with a concentration of up to 0.5 mg/mL of gold.
The formulation is buffered by sodium bicarbonate present at a concentration of 0.546 mg/mL.
There are no other excipients.
The drug product is formulated to be taken orally and will be provided in single dose HDPE containers.
The study doses vary by the concentration of gold nanocrystals per milliliter in a volume of 60 mL.
Other Names:
|
Experimental: 15mg CNM-Au8
15mg suspension of clean-surfaced, faceted, gold nanocrystals in 120ml of sodium bicarbonate buffered water
|
CNM-Au8 is a dark red/purple-colored liquid formulation consisting of a stable suspension of faceted clean surfaced elemental gold nanocrystals in buffered deionized water with a concentration of up to 0.5 mg/mL of gold.
The formulation is buffered by sodium bicarbonate present at a concentration of 0.546 mg/mL.
There are no other excipients.
The drug product is formulated to be taken orally and will be provided in single dose HDPE containers.
The study doses vary by the concentration of gold nanocrystals per milliliter in a volume of 60 mL.
Other Names:
|
Experimental: 30mg CNM-Au8
30mg suspension of clean-surfaced, faceted, gold nanocrystals in 120ml of sodium bicarbonate buffered water
|
CNM-Au8 is a dark red/purple-colored liquid formulation consisting of a stable suspension of faceted clean surfaced elemental gold nanocrystals in buffered deionized water with a concentration of up to 0.5 mg/mL of gold.
The formulation is buffered by sodium bicarbonate present at a concentration of 0.546 mg/mL.
There are no other excipients.
The drug product is formulated to be taken orally and will be provided in single dose HDPE containers.
The study doses vary by the concentration of gold nanocrystals per milliliter in a volume of 60 mL.
Other Names:
|
Experimental: 60mg CNM-Au8
60mg suspension of clean-surfaced, faceted, gold nanocrystals in 120ml of sodium bicarbonate buffered water
|
CNM-Au8 is a dark red/purple-colored liquid formulation consisting of a stable suspension of faceted clean surfaced elemental gold nanocrystals in buffered deionized water with a concentration of up to 0.5 mg/mL of gold.
The formulation is buffered by sodium bicarbonate present at a concentration of 0.546 mg/mL.
There are no other excipients.
The drug product is formulated to be taken orally and will be provided in single dose HDPE containers.
The study doses vary by the concentration of gold nanocrystals per milliliter in a volume of 60 mL.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The change from baseline to week 12 in CNS metabolic changes, based on 31P-MRS Redox Ratio.
Time Frame: At 12 Weeks
|
Mean change in average NAD+/NADH measured brain Redox Ratio by treatment cohort from Baseline to Week 12.
|
At 12 Weeks
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of ATP (a, B, y) by subject per dosing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of ATP (a, B, y) by treatment group.
|
At 12 Weeks
|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of NAD+/NADH pool by subject per dosing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of NAD+/NADH pool by treatment group.
|
At 12 Weeks
|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of Phosphocreatine (PCr) by subject per dosing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of pooled Phosphocreatine by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of Intracellular inorganic phosphate (Pi(in)) by subject per doing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of intracellular inorganic phosphate by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of Extracellular inorganic phosphate (Pi(ex)) by subject per dosing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of extracellular inorganic phosphate by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Bioenergetic Metabolite CNS Tissue Concentration of Uridine Diphosphate Glucose (UDPG) by subject per dosing group.
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of UDPG by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Membrane Component Tissue Concentration of Phosphoethanolamine (PE)
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of PE [mmol/kg] by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Membrane Component CNS Tissue Concentration of Phosphocholine (PC)
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of PC [mmol/kg] by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Membrane Component CNS Tissue Concentration of glycerophosphoethanolamine (GPE)
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of GPE [mmol/kg] by treatment group
|
At 12 Weeks
|
Mean Change in 31P-MRS Membrane Component CNS Tissue Concentration of Glycerophosphocholine (GPC)
Time Frame: At 12 Weeks
|
Mean change in average CNS concentration of GPC [mmol/kg] by treatment group
|
At 12 Weeks
|
Mean Change in Symbol Digit Modality Test (SDMT)
Time Frame: At 12 Weeks
|
Mean change in Symbol Digit Modality Test (SDMT) by treatment group from Baseline to Week 12
|
At 12 Weeks
|
Mean Change in Optical Coherence Tomography (OCT) Retinal Layers of ganglion cell + inner plexiform layer (GCIPL)
Time Frame: At 12 Weeks
|
Mean change in Optical Coherence Tomography (OCT) retinal layers by macular scan of Ganglion Cell + inner plexiform layer (GCIPL).
|
At 12 Weeks
|
Mean Change in Optical Coherence Tomography (OCT) Retinal Layer of Outer nuclear layer (ONL).
Time Frame: At 12 Weeks
|
Mean change in Optical Coherence Tomography (OCT) retinal layers by macular scan of Outer nuclear layer (ONL).
|
At 12 Weeks
|
Mean Change in Optical Coherence Tomography (OCT) Retinal Layer of Inner nuclear layer (INL).
Time Frame: At 12 Weeks
|
Mean change in Optical Coherence Tomography (OCT) retinal layers by macular scan of Inner nuclear layer (INL).
|
At 12 Weeks
|
Mean Change in Optical Coherence Tomography (OCT) Retinal Nerve Fiber Layer by Peripapillary scan.
Time Frame: At 12 Weeks
|
Mean change in Retinal Nerve Fiber Layer by Peripapillary Scan (pRNFL)
|
At 12 Weeks
|
Mean Change in Myelin Volume Fraction (MVF)
Time Frame: At 12 Weeks
|
Mean change in Myelin volume fraction (MVF) in baseline lesions and in normal appearing white matter (NAWM).
|
At 12 Weeks
|
Mean Change in Restricted Volume Fraction (F_R)
Time Frame: At 12 Weeks
|
Mean Change in Restricted Volume Fraction (F_R) in baseline lesions and in normal appearing white matter (NAWM).
|
At 12 Weeks
|
Mean Change in CSF Volume Fraction (F_CSF)
Time Frame: At 12 Weeks
|
Mean change in CSF Volume Fraction (F_CSF) between Baseline and Week 12 MRI
|
At 12 Weeks
|
Mean Change in Axonal Volume Fraction (AVF)
Time Frame: At 12 Weeks
|
Mean Change in Axonal Volume Fraction (AVF) in baseline lesions and in normal appearing white matter (NAWM).
|
At 12 Weeks
|
Mean Change in G-Ratio
Time Frame: At 12 Weeks
|
Mean change in g-ratio in baseline lesion and in normal appearing white matter (NAWM) represented as an aggregate measure calculated on a per-voxel basis
|
At 12 Weeks
|
Mean Change in G-Ration Susceptibility
Time Frame: At 12 Weeks
|
Mean change in the g-ratio susceptibility (ppm) in baseline lesion and in normal appearing white matter (NAWM).
|
At 12 Weeks
|
9-Hole Peg Test
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the 9-Hole Peg Test by hand.
|
At 12 weeks
|
Timed 25 foot walk test.
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the Timed 25-Foot Walk Test.
|
At 12 weeks
|
EDSS
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the Expanded Disability Status Scale.
The scale is rated 0-10 with 0 representing normal neurological function, and 10 representing death.
|
At 12 weeks
|
Low contrast letter acuity by eye
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the Low contrast letter acuity (LCLA) by eye.
|
At 12 weeks
|
Clinical Global Impression Scale
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the Clinical global impression scale (CGI).
|
At 12 weeks
|
Patient Global Impression Scale
Time Frame: At 12 weeks
|
Mean change from Baseline to Week 12 by treatment cohort for the Patient global impression scale (PGI).
|
At 12 weeks
|
Pharmacokinetic Endpoint
Time Frame: Through 18 weeks
|
Samples for the measurement of whole blood concentrations of Au will be collected before (pre-dose) administration of the investigational drug product during the Weeks 4 8, and 12 Visits.
PK samples will also be collected during the EOS phase at Weeks 14, 16, and 18.
|
Through 18 weeks
|
Pharmacodynamic Endpoint
Time Frame: Through 18 weeks
|
Blood and urine samples for the measurement of pharmacodynamic (PD) assays will be collected at Baseline (pre-dose) following the PK collection during the Weeks 4, 8, 12 and the Week 18 EOS visit.
An optional CSF collection for PD analysis will occur at the Baseline Visit (pre-dose) and Week 12 for subjects who consent to the procedure.
PD samples will be stored for future analyses to be specified in a separate PD Analysis Plan to be completed prior to the study database lock.
|
Through 18 weeks
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Peter Sguigna, MD, University of Texas Southwestern Medical Center
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CNMAu8.207
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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