Clinical Trial Details
— Status: Terminated
Administrative data
NCT number |
NCT05055622 |
Other study ID # |
7003 |
Secondary ID |
|
Status |
Terminated |
Phase |
Phase 2
|
First received |
|
Last updated |
|
Start date |
December 2015 |
Est. completion date |
January 27, 2018 |
Study information
Verified date |
September 2021 |
Source |
Research Foundation for Mental Hygiene, Inc. |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
This study that has the following goals:
a) To systematically characterize symptomatology of patients with PTLS by conducting
multimodal sensory and neurocognitive assessments and comparing patients with PTLS to healthy
controls and to identify biomarkers associated with chronic pain and sensory hypersensitivity
among patients with PTLS, c) To investigate whether pharmacologic treatment with milnacipran
is associated with clinical improvement chronic pain and physical functioning and with
specific changes both in the cerebral and ventricular neurochemistry and in the neural
activation patterns d) To investigate whether augmentation with a glutamatergic agent
(D-cycloserine) can increase the pain -alleviating effect of an SNRI agent (milnacipran)
among patients with PTLS
First, patients with chronic PTLS pain and healthy controls will carefully assessed and
compared on the brain imaging measures, sensory battery, neuropsychologic tests, and immune
markers. After this extensive clinical and neural markers assessment, patients with PTLS and
chronic pain will be randomized to (i) 12 weeks of milnacipran +d-cycloserine augmentation,
or (ii) 12 weeks of milnacipran + placebo augmentation. Milnacipran (an SNRI) reduces both
pain and depression and was shown in previos studies to reduce pain in fibromyalgia.
D-Cycloserine (as a glutamate modulator) as a SNRI adjunct was shown to further reduce
depression and in animal models to reduce pain. Primary outcome measure will be improvement
in pain on visual analog scale, physical functioning and quality of life. All patients will
undergo sensory, immune, glycine, self-reports, neuropsychologic testing, and neural markers
assessments pre- and post-treatment.
Description:
At least 5-15% of patients with Lyme disease (7,500-45,000 new cases a year) develop
Post-treatment Lyme Syndrome (PTLS) - debilitating residual symptoms that last months to
years despite antibiotic treatment. Many patients with PTLS experience chronic widespread
pain which may be mediated by the process of central sensitization. To date, central neural
mechanisms underlying this debilitating syndrome are still unknown, and, to our knowledge,
there have been no studies exploring the aberrantly working neural pain circuits,
neurochemistry, and possible associated immune system dysregulation in PTLS. Understanding
the central neural and immune markers of PTLS can lead to the development of new targeted
treatments, which are urgently needed.
There are also no known treatments for patients with persistent widespread pain after
antibiotic-treatment for Lyme disease. Because SNRIs have been shown to be helpful in
reducing pain among patients with central sensitization syndromes (e.g., fibromyalgia),
treatment with a SNRI would be expected to help patients with PTLS. However the magnitude of
this effect is modest, ranging from mild to moderate in different studies. Agents that
augment the improvement in pain are needed. We propose to conduct a study that has the
following goals:a) To systematically characterize symptomatology of patients with PTLS by
conducting multimodal sensory and neurocognitive assessments and comparing patients with PTLS
to healthy controls b) To identify biomarkers associated with chronic pain and sensory
hypersensitivity among patients with PTLS, including: immune markers, neural circuits
involved in pain processing, and neurochemistry of pain processing brain regions (glutamate
and GABA in the insula)c) To investigate whether pharmacologic treatment with milnacipran
with/without DCS is associated with clinical improvement and with specific changes both in
the cerebral and ventricular neurochemistry and in the neural activation patterns d) To
investigate whether augmentation with a glutamatergic agent (D-cycloserine) can increase the
pain -alleviating effect of an SNRI agent (milnacipran) among patients with PTLS.
To accomplish this, first, 40 patients with PTLS and chronic pain and 20 healthy controls
will carefully assessed and compared on the following measures: Multimodal Sensory Battery
(thermal, pressure, vibration, sound, & light sensitivity); neurocognitive testing;
self-report measures of pain, fatigue, mood, functioning, quality of life, lifetime
stressors, peripheral neuropathy; physical exam and detailed medical history; lab testing for
Lyme and co-infections; serum glycine; autonomic nervous system measures; neural circuits in
the brain using fMRI during rest and reactivity to pain stimuli; neurochemistry of the brain
using MRS, including Glutamate & GABA in pain regions (anterior and posterior insula) as well
as ventricular lactate; immune markers (cytokines and chemokines using stimulated macrophage
methodology -lipopolysaccharide (LPS) challenge). After this extensive clinical and neural
markers assessment, 40 patients with PTLS and chronic pain will be randomized to (i) 12 weeks
of milnacipran +d-cycloserine augmentation or (ii) 12 weeks of milnacipran + placebo
augmentation. Primary outcome measure will be improvement in pain on visual analog scale,
physical functioning and quality of life. Milnacipran (an SNRI) reduces both pain and
depression and was shown in previos studies to reduce pain in fibromyalgia. D-Cycloserine (as
a glutamate modulator) as a SNRI adjunct was shown to further reduce depression and in animal
models to reduce pain.All patients will undergo sensory, immune, glycine, self-reports,
neuropsychologic testing, and neural markers assessments pre- and post-treatment.