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Levocarnitine for Dry Eye in Sjogren's Syndrome

Primary Purpose

Sjogren's Syndrome, Keratoconjunctivitis Sicca

Status
Recruiting
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Levocarnitine
Placebo
Sponsored by
Vanderbilt University Medical Center
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Sjogren's Syndrome focused on measuring Sjogren's syndrome, dry eye, sicca

Eligibility Criteria

18 Years - 75 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Clinician diagnosis of primary or secondary SjS.
  2. Positive anti-SSA
  3. Diagnosis of keratoconjunctivitis sicca defined by OSDI ≥ 25 and Schirmer's test ≤ 5mm/5min in at least 1 eye.
  4. Stable medications for past 4 weeks

Exclusion Criteria:

  1. Age <18 or >75 at screening visit
  2. Pregnant or nursing, or women of childbearing potential unwilling to use a medically acceptable form of birth control
  3. Unwilling or unable to stop the use of any artificial tear formulations containing L-carnitine.
  4. Taking any form of levocarnitine supplementation or nutritional supplements containing L-carnitine within 2 months prior to enrollment
  5. Unwilling to discontinue immunomodulatory (e.g. Restasis, Xiidra), anti-inflammatory (e.g. steroid containing) eye drops, or serum tears for 1 month prior and throughout the duration of the study
  6. Unwilling to discontinue wearing contact lenses for 1 month prior and throughout the duration of the study
  7. Planned occlusion of the lacrimal puncta with either punctal plugs or cauterization during the study
  8. Laser-assisted in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), or radial keratectomy
  9. Ocular surgery/trauma in the last 6 months or planned during the study
  10. History of ocular infection, including severe blepharitis, in the last 3 months
  11. Active ocular allergy that, in the opinion of the investigator, would compromise interpretation of the data
  12. Elevated AST, ALT, alkaline phosphatase or bilirubin above the upper limit of normal at screening
  13. Renal insufficiency defined by a creatinine clearance of less than 30 ml/min (CKD-EPI or MDRD formula)
  14. Treatment with any investigational agent within ≤ 4 weeks (or 5 half-lives of the investigational drug, whichever is longer) of the screening visit
  15. Laboratory parameters at the pre-treatment visit showing any of the following abnormal results: neutrophil count < 1,500/mm3; platelet count < 100,000/mm3; hemoglobin < 9 g/dL
  16. Contraindications to the class of drugs under study, e.g. known hypersensitivity or allergy to class of drugs or the investigational product
  17. The patient has a known defect in oxidative phosphorylation (such as a confirmed mitochondrial myopathy)
  18. Any medical or psychiatric condition, which in the opinion of the investigator, places the subject at unacceptable risk or which might compromise the validity of the collected data
  19. Allogeneic BMT or chemotherapy in the past 3 months
  20. The patient has a history of seizure activity.
  21. History of a cornea transplant
  22. Herpes simplex or herpes zoster infection in the eye
  23. Eyelid tattooing (permanent eyelining)
  24. Current diagnoses of any of the following conditions: acute allergic conjunctivitis, inflammation (e.g, retinitis macular inflammation, choroiditis, uveitis, scleritis, episcleritis, keratitis)
  25. On glaucoma eye-drops or eye-drops for lowering eye pressure
  26. Known diagnoses of: Hepatitis C infection, HIV infection, Sarcoidosis, Amyloidosis, Graft versus host disease, Cicatrizing conjunctivitis (e.g. from trachoma, Stevens-Johnson syndrome, pemphigoid, drug induced pseudo-pemphigoid, or chemical ocular burns), Pre-existing lymphoma in patients with no prior diagnosis of SS, Past head and neck radiation treatment
  27. Condition that may compromise ocular surface integrity: trachoma, Stevens-Johnson syndrome, pemphigoid, graft versus host disease, prior chemical burn, recurrent corneal erosions, persistent corneal epithelial defects, prior ocular trauma
  28. Issues with closing eyelids completely or having eyelashes rub on surface of eye
  29. Unwilling to discontinue oral supplements for dry eye like fish oil for 1 month prior and throughout study duration

Sites / Locations

  • Vanderbilt University Medical CenterRecruiting

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Experimental

Arm Label

Experimental: Levocarnitine, Placebo

Experimental: Placebo, Levocarnitine

Arm Description

1000 mg of levocarnitine twice per day for six weeks, a two week washout period, 1000 mg of placebo twice per day for 6 weeks

1000 mg of placebo twice per day for six weeks, a two week washout period, 1000 mg of levocarnitine twice per day for 6 weeks

Outcomes

Primary Outcome Measures

Mean change in tear inflammatory cytokine milieu
Levels of inflammatory cytokines IFN-gamma, TNF-alpha, IL-17, IL-6 and IL-1beta will be measured by flow cytometric multiplexed bead assay.

Secondary Outcome Measures

Ocular Surface Disease Index (OSDI)
The Ocular Surface Disease Index (OSDI) was developed by the Outcomes Research Group (Allergan Inc.) in 1997 as an assessment of symptoms (functional, limitations, and environmental) of dry eye disease and their effect on vision. It is a 12-item list, with each item compromised of a five category Likert-like response option (see Appendix D). of 24 different clinical and laboratory variables/disease descriptors, comprising nine organ systems. Scores of the descriptors range from 1 to 8, and the total possible score for all descriptors is 105. Regression models are applied to assign relative weights to each parameter.
Mean change in tear carnitine levels.
Tear carnitine levels will be measured by mass spectrometry,
EULAR Sjogren's Disease Activity Index
The EULAR Sjogren's Syndrome Disease Activity Index (ESSDAI) is a systemic disease activity index that was designed to measure disease activity in patients with primary SjS developed in 2009. It is a score than has been developed by consensus of experts from European and North American countries and it supported by the EULAR. The ESSDAI includes 12 domains (cutaneous, renal, articular, muscular, peripheral nervous system, hematological, glandular, constitutional, lymphadenopathic, biological) each of which is divided into 3-4 levels of activity.
EULAR Sjogren's Syndrome Patient Reported Index
The EULAR Sjogren's Syndrome Patient Reported Index (ESSPRI) is a patient-administered questionnaire to asses patients' symptoms. It was developed using the Patient Global Assessment of Disease as the 'gold standard" and measures symptoms of dryness, limb pain, and mental fatigue
EULAR Sicca Score
The EULAR sicca score is a measure of overall severity of dryness experienced by the patients. Ocular, oral, cutaneous, nasal, tracheal, and vaginal dryness is reported on a scale of 1-10. The final ESS score is calculated as follows: (2 x oral dryness + ocular dryness) / 3.
Patient Global Assessment
The Patient Global Assessment (PGA) is one of the most widely used patient reported outcomes in research. It is typically administered as a single question with either a 1-10 or 1-100 response
Schirmer's tear test
The Schirmer's tear test is used to determine if the tear glands produce enough tears to keep the eyes moist. Strips of filter paper are placed within the lower eyelid for a period of time. Wetting of the filter paper is measured in millimeters.
Fluorescein staining
Staining with fluorescein is used to characterize dry eye disease, assess severity, and monitor response to therapy. It is graded using the Oxford scale which consists of a chart containing a series of panels labeled A-E in order of increasing severity. Staining is represented by punctate dots, and the number of dots increases by one log unit from panel A to B and by 0.5 log units between panels B to E. To grade, comparisons are made between the panels and the appearance of staining on the conjunctiva and cornea of the patient.
Lissamine green staining
Staining with lissamine green is used to characterize dry eye disease, assess severity, and monitor response to therapy. It is graded using the Oxford scale which consists of a chart containing a series of panels labeled A-E in order of increasing severity. Staining is represented by punctate dots, and the number of dots increases by one log unit from panel A to B and by 0.5 log units between panels B to E. To grade, comparisons are made between the panels and the appearance of staining on the conjunctiva and cornea of the patient.
Tear break-up time
Tear break-up time is measured by adding fluorescein dye to the eye and observing the tear film using a slit lamp until dry spots occur.

Full Information

First Posted
April 30, 2019
Last Updated
February 11, 2023
Sponsor
Vanderbilt University Medical Center
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1. Study Identification

Unique Protocol Identification Number
NCT03953703
Brief Title
Levocarnitine for Dry Eye in Sjogren's Syndrome
Official Title
A Randomized Placebo-controlled, Double Blind Pilot Crossover Trial of Levocarnitine for the Treatment of Keratoconjunctivitis Sicca in Sjogren's Syndrome
Study Type
Interventional

2. Study Status

Record Verification Date
February 2023
Overall Recruitment Status
Recruiting
Study Start Date
November 17, 2021 (Actual)
Primary Completion Date
September 1, 2024 (Anticipated)
Study Completion Date
September 1, 2024 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Vanderbilt University Medical Center

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
Yes
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
This study evaluates the effectiveness of levocarnitine in the treatment of dry eye in adults with Sjogren's syndrome. This will be a crossover study design with all participants receiving both levocarnitine and placebo.
Detailed Description
A phenome wide association study (PheWAS) was conducted for variants in the SLC22A5 gene encoding the OCTN2 protein. OCTN2 is a cell membrane protein that transports carnitine into the cell. The carnitine supplement levocarnitine, FDA approved for human use and with a favorable safety profile, was identified for repurposing. SLC22A5/OCTN2 are a class of sodium ion dependent, high affinity transmembrane proteins expressed in the heart, liver, muscle, and kidney among other tissues. The screen identified "sicca syndrome" (OR 4.56; P = 5.6E-04) as well as various other eye diseases as the most significantly associated phenotypes. Sicca syndrome is defined as dryness of the exocrine glands, particularly the eyes (keratoconjunctivitis sicca) and mouth (xerostomia). This condition is most often caused by Sjogren's syndrome (SjS), a systemic autoimmune disease characterized by lymphocytic infiltration of the lacrimal and salivary glands. Interestingly, carnitine is present in considerable quantities in the tears of normal, healthy eyes, and studies have shown a decrease in the tear carnitine levels of dry eye patients. Furthermore, eyedrop preparations containing l-carnitine have shown benefit in dry eye disease. The overall hypothesis is that OCTN2 dysfunction underlies keratoconjunctivitis sicca in SjS patients and that oral supplementation with levocarnitine may be beneficial.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Sjogren's Syndrome, Keratoconjunctivitis Sicca
Keywords
Sjogren's syndrome, dry eye, sicca

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Crossover Assignment
Masking
Outcomes Assessor
Allocation
Randomized
Enrollment
15 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Experimental: Levocarnitine, Placebo
Arm Type
Experimental
Arm Description
1000 mg of levocarnitine twice per day for six weeks, a two week washout period, 1000 mg of placebo twice per day for 6 weeks
Arm Title
Experimental: Placebo, Levocarnitine
Arm Type
Experimental
Arm Description
1000 mg of placebo twice per day for six weeks, a two week washout period, 1000 mg of levocarnitine twice per day for 6 weeks
Intervention Type
Drug
Intervention Name(s)
Levocarnitine
Intervention Description
Levocarnitine 1000 mg twice per day for 6 weeks
Intervention Type
Drug
Intervention Name(s)
Placebo
Intervention Description
Placebo 1000 mg twice per day for 6 weeks
Primary Outcome Measure Information:
Title
Mean change in tear inflammatory cytokine milieu
Description
Levels of inflammatory cytokines IFN-gamma, TNF-alpha, IL-17, IL-6 and IL-1beta will be measured by flow cytometric multiplexed bead assay.
Time Frame
14 weeks
Secondary Outcome Measure Information:
Title
Ocular Surface Disease Index (OSDI)
Description
The Ocular Surface Disease Index (OSDI) was developed by the Outcomes Research Group (Allergan Inc.) in 1997 as an assessment of symptoms (functional, limitations, and environmental) of dry eye disease and their effect on vision. It is a 12-item list, with each item compromised of a five category Likert-like response option (see Appendix D). of 24 different clinical and laboratory variables/disease descriptors, comprising nine organ systems. Scores of the descriptors range from 1 to 8, and the total possible score for all descriptors is 105. Regression models are applied to assign relative weights to each parameter.
Time Frame
14 weeks
Title
Mean change in tear carnitine levels.
Description
Tear carnitine levels will be measured by mass spectrometry,
Time Frame
14 weeks
Title
EULAR Sjogren's Disease Activity Index
Description
The EULAR Sjogren's Syndrome Disease Activity Index (ESSDAI) is a systemic disease activity index that was designed to measure disease activity in patients with primary SjS developed in 2009. It is a score than has been developed by consensus of experts from European and North American countries and it supported by the EULAR. The ESSDAI includes 12 domains (cutaneous, renal, articular, muscular, peripheral nervous system, hematological, glandular, constitutional, lymphadenopathic, biological) each of which is divided into 3-4 levels of activity.
Time Frame
14 weeks
Title
EULAR Sjogren's Syndrome Patient Reported Index
Description
The EULAR Sjogren's Syndrome Patient Reported Index (ESSPRI) is a patient-administered questionnaire to asses patients' symptoms. It was developed using the Patient Global Assessment of Disease as the 'gold standard" and measures symptoms of dryness, limb pain, and mental fatigue
Time Frame
14 weeks
Title
EULAR Sicca Score
Description
The EULAR sicca score is a measure of overall severity of dryness experienced by the patients. Ocular, oral, cutaneous, nasal, tracheal, and vaginal dryness is reported on a scale of 1-10. The final ESS score is calculated as follows: (2 x oral dryness + ocular dryness) / 3.
Time Frame
14 weeks
Title
Patient Global Assessment
Description
The Patient Global Assessment (PGA) is one of the most widely used patient reported outcomes in research. It is typically administered as a single question with either a 1-10 or 1-100 response
Time Frame
14 weeks
Title
Schirmer's tear test
Description
The Schirmer's tear test is used to determine if the tear glands produce enough tears to keep the eyes moist. Strips of filter paper are placed within the lower eyelid for a period of time. Wetting of the filter paper is measured in millimeters.
Time Frame
14 weeks
Title
Fluorescein staining
Description
Staining with fluorescein is used to characterize dry eye disease, assess severity, and monitor response to therapy. It is graded using the Oxford scale which consists of a chart containing a series of panels labeled A-E in order of increasing severity. Staining is represented by punctate dots, and the number of dots increases by one log unit from panel A to B and by 0.5 log units between panels B to E. To grade, comparisons are made between the panels and the appearance of staining on the conjunctiva and cornea of the patient.
Time Frame
14 weeks
Title
Lissamine green staining
Description
Staining with lissamine green is used to characterize dry eye disease, assess severity, and monitor response to therapy. It is graded using the Oxford scale which consists of a chart containing a series of panels labeled A-E in order of increasing severity. Staining is represented by punctate dots, and the number of dots increases by one log unit from panel A to B and by 0.5 log units between panels B to E. To grade, comparisons are made between the panels and the appearance of staining on the conjunctiva and cornea of the patient.
Time Frame
14 weeks
Title
Tear break-up time
Description
Tear break-up time is measured by adding fluorescein dye to the eye and observing the tear film using a slit lamp until dry spots occur.
Time Frame
14 weeks

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Clinician diagnosis of primary or secondary SjS. Positive anti-SSA Diagnosis of keratoconjunctivitis sicca defined by OSDI ≥ 25 and Schirmer's test ≤ 5mm/5min in at least 1 eye. Stable medications for past 4 weeks Exclusion Criteria: Age <18 or >75 at screening visit Pregnant or nursing, or women of childbearing potential unwilling to use a medically acceptable form of birth control Unwilling or unable to stop the use of any artificial tear formulations containing L-carnitine. Taking any form of levocarnitine supplementation or nutritional supplements containing L-carnitine within 2 months prior to enrollment Unwilling to discontinue immunomodulatory (e.g. Restasis, Xiidra), anti-inflammatory (e.g. steroid containing) eye drops, or serum tears for 1 month prior and throughout the duration of the study Unwilling to discontinue wearing contact lenses for 1 month prior and throughout the duration of the study Planned occlusion of the lacrimal puncta with either punctal plugs or cauterization during the study Laser-assisted in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), or radial keratectomy Ocular surgery/trauma in the last 6 months or planned during the study History of ocular infection, including severe blepharitis, in the last 3 months Active ocular allergy that, in the opinion of the investigator, would compromise interpretation of the data Elevated AST, ALT, alkaline phosphatase or bilirubin above the upper limit of normal at screening Renal insufficiency defined by a creatinine clearance of less than 30 ml/min (CKD-EPI or MDRD formula) Treatment with any investigational agent within ≤ 4 weeks (or 5 half-lives of the investigational drug, whichever is longer) of the screening visit Laboratory parameters at the pre-treatment visit showing any of the following abnormal results: neutrophil count < 1,500/mm3; platelet count < 100,000/mm3; hemoglobin < 9 g/dL Contraindications to the class of drugs under study, e.g. known hypersensitivity or allergy to class of drugs or the investigational product The patient has a known defect in oxidative phosphorylation (such as a confirmed mitochondrial myopathy) Any medical or psychiatric condition, which in the opinion of the investigator, places the subject at unacceptable risk or which might compromise the validity of the collected data Allogeneic BMT or chemotherapy in the past 3 months The patient has a history of seizure activity. History of a cornea transplant Herpes simplex or herpes zoster infection in the eye Eyelid tattooing (permanent eyelining) Current diagnoses of any of the following conditions: acute allergic conjunctivitis, inflammation (e.g, retinitis macular inflammation, choroiditis, uveitis, scleritis, episcleritis, keratitis) On glaucoma eye-drops or eye-drops for lowering eye pressure Known diagnoses of: Hepatitis C infection, HIV infection, Sarcoidosis, Amyloidosis, Graft versus host disease, Cicatrizing conjunctivitis (e.g. from trachoma, Stevens-Johnson syndrome, pemphigoid, drug induced pseudo-pemphigoid, or chemical ocular burns), Pre-existing lymphoma in patients with no prior diagnosis of SS, Past head and neck radiation treatment Condition that may compromise ocular surface integrity: trachoma, Stevens-Johnson syndrome, pemphigoid, graft versus host disease, prior chemical burn, recurrent corneal erosions, persistent corneal epithelial defects, prior ocular trauma Issues with closing eyelids completely or having eyelashes rub on surface of eye Unwilling to discontinue oral supplements for dry eye like fish oil for 1 month prior and throughout study duration
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Jonathan M WIlliams, PhD
Phone
6158759200
Email
jon.williams@vumc.org
First Name & Middle Initial & Last Name or Official Title & Degree
Balint K Pandur, MS
Phone
6153220544
Email
balint.k.pandur@vumc.org
Facility Information:
Facility Name
Vanderbilt University Medical Center
City
Nashville
State/Province
Tennessee
ZIP/Postal Code
37232
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Jonathan M Williams, PhD
Phone
615-875-9200
Email
jon.williams@vumc.org

12. IPD Sharing Statement

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Levocarnitine for Dry Eye in Sjogren's Syndrome

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