Publications by authors named "Todd LeVine"

Introduction: Small-fiber neuropathy (SFN) is highly prevalent but often idiopathic. TS-HDS, FGFR-3, and Plexin D1 autoantibodies (seropositive) may be present in more than 40% of idiopathic cases. Another autoimmune biomarker is a non-length-dependent (NLD) skin biopsy pattern.

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Chronic inflammatory demyelinating polyneuropathy (CIDP) is an immune mediated demyelinating neuropathy that can lead to secondary axonal degeneration and irreversible weakness and disability. Early effective treatment is therefore necessary to minimize the degree of axonal degeneration. Prior to 2024 the only FDA approved therapy for CIDP was intravenous immunoglobulin (IVIg).

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  • ALS is a fast-progressing neurodegenerative disease with no cure and limited treatment options, creating a need for better therapies.
  • A study was conducted to examine the effects of memantine on ALS progression and related cognitive and behavioral changes using a randomized, placebo-controlled trial with 89 participants.
  • Results showed that memantine did not significantly affect the progression of ALS, biomarker changes, or neuropsychiatric symptoms compared to a placebo.
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  • The study aimed to assess the safety and effectiveness of caprylate/chromatography-purified intravenous immunoglobulin (IGIV-C) in patients with generalized myasthenia gravis (MG) compared to a placebo.
  • A total of 62 patients participated in a randomized trial, where IGIV-C showed a numerical improvement in certain outcomes like activities of daily living, although most primary and secondary outcomes did not reach statistical significance.
  • While IGIV-C was generally well-tolerated, the small size of the study suggests the need for further research to better understand its potential as a maintenance therapy for MG.
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The Covid-19 pandemic challenged health care delivery systems worldwide. Many acute care hospitals in communities that experienced surges in cases and hospitalizations had to make decisions such as rationing scarce resources. Hospitals serving low-income communities, communities of color, and those in other historically marginalized or vulnerable groups reported the greatest operational impacts of surges.

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  • Rozanolixizumab, a neonatal Fc receptor inhibitor, was tested for managing chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) in a phase 2a study, where patients received either the drug or a placebo.
  • The study involved 34 participants who were assessed for changes in disability scores over 85 days, but results indicated no significant difference in efficacy between the drug and placebo.
  • Despite the lack of efficacy, rozanolixizumab was generally well tolerated with an acceptable safety profile, and most patients experienced treatment-emergent adverse events similar to the placebo group.
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Importance: Finding a reliable diagnostic biomarker for the disorders collectively known as synucleinopathies (Parkinson disease [PD], dementia with Lewy bodies [DLB], multiple system atrophy [MSA], and pure autonomic failure [PAF]) is an urgent unmet need. Immunohistochemical detection of cutaneous phosphorylated α-synuclein may be a sensitive and specific clinical test for the diagnosis of synucleinopathies.

Objective: To evaluate the positivity rate of cutaneous α-synuclein deposition in patients with PD, DLB, MSA, and PAF.

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  • Dermatomyositis is an inflammatory muscle disease characterized by rashes and muscle weakness, with recent research (ProDERM study) focused on the effectiveness of intravenous immunoglobulin (IVIg) as treatment.
  • This study involved 95 adult patients, comparing the effects of IVIg to a placebo over 16 weeks, followed by an extension period where all patients received IVIg.
  • Findings indicated that while some patients experienced treatment-related adverse events (TEAEs), IVIg showed a generally favorable safety profile, with adjustments in dosage reducing certain risks without causing severe complications.
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Objectives: To assess the safety, tolerability, and key pharmacodynamic effects of subcutaneous batoclimab, a fully human anti-neonatal Fc receptor monoclonal antibody, in patients with generalized myasthenia gravis and anti-acetylcholine receptor antibodies.

Methods: A Phase 2a, proof-of-concept, randomized, double-blind, placebo-controlled trial is described. Eligible patients were randomized (1:1:1) to receive once-weekly subcutaneous injections of batoclimab 340 mg, batoclimab 680 mg, or matching placebo for 6 weeks.

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Background: Dermatomyositis (DM) is a rare autoimmune disease characterized by skin involvement, with or without proximal muscle weakness. Recently, following the ProDERM study, intravenous immunoglobulin (IVIg) was approved for treatment of DM. Until ProDERM evidence from large, placebo-controlled studies supporting its use for dermatological symptoms, was lacking.

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  • Inclusion body myositis is a common muscle-wasting disease in people over 50, and no effective drug treatment currently exists, prompting research into the oral drug arimoclomol.
  • A double-blind, placebo-controlled study was conducted on 152 adults in specialist centers across the USA and the UK, randomly assigning them to receive either arimoclomol or a placebo for 20 months.
  • The primary goal was to measure changes in muscle function using the Inclusion Body Myositis Functional Rating Scale, with safety evaluations including all participants who received at least one dose of the medication.
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Objective: To evaluate belimumab addition to the standard of care in patents with refractory idiopathic inflammatory myopathy (IIM).

Methods: We conducted a 40-week multicentre, randomized, double-blind, placebo-controlled trial with 1:1 IV belimumab 10 mg/kg or placebo randomization and a 24-week open-label extension. Clinical responses were measured by the definition of improvement (DOI) and total improvement score (TIS).

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  • The ADVANCE-CIDP 1 study tested the effectiveness and safety of facilitated subcutaneous immunoglobulin (fSCIG) in reducing relapses of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) compared to a placebo.
  • The study was a phase 3 trial that involved 132 eligible adults who had been receiving stable intravenous immunoglobulin (IVIG) prior to being randomized to either fSCIG or placebo for 6 months.
  • Results showed that fSCIG significantly reduced CIDP relapse rates compared to the placebo, although adverse events were more frequent with fSCIG, but serious complications were less common.
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ALSUntangled reviews alternative and off-label treatments for people living with amyotrophic lateral sclerosis (PALS). Here, we review caffeine which has plausible mechanisms for slowing ALS progression. However, pre-clinical studies are contradictory, and a large case series showed no relationship between caffeine intake and ALS progression rate.

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Background And Purpose: Data on maintenance therapy with subcutaneous immunoglobulin (SCIg) in myasthenia gravis (MG) are limited. We report on transitioning acetylcholine receptor (AChR) antibody-positive (Ab+) MG patients on stable intravenous immunoglobulin (IVIg) regimens as part of routine clinical care to SCIg 1:1.2.

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Introduction/aims: Small fiber neuropathies (SFN) have been associated with two autoantibodies, trisulfated heparin disaccharide (TS-HDS) and fibroblast growth factor receptor 3 (FGFR-3), and intravenous immune globulin (IVIG) has been suggested as a potential therapy. The study objective is to determine the efficacy of IVIG on nerve density, pain and neurologic examinations in patients with SFN associated with TS-HDS and FGFR-3 autoantibodies.

Methods: This was a double-blind placebo-controlled pilot study.

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Background: Intravenous immune globulin (IVIG) for the treatment of dermatomyositis has not been extensively evaluated.

Methods: We conducted a randomized, placebo-controlled trial involving patients with active dermatomyositis. The patients were assigned in a 1:1 ratio to receive IVIG at a dose of 2.

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Finding an easily accessible and reliable tool to diagnose the diseases collectively defined as 'synucleinopathies' is an urgent, unmet priority. The synucleinopathies include Parkinson's disease, multiple system atrophy, pure autonomic failure and dementia with Lewy bodies. There are millions of people who have a diagnosis of a synucleinopathy, with more diagnosed every year.

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Background: Autism spectrum disorder (ASD) is associated with anxiety and sleep problems. We investigated transdermal electrical neuromodulation (TEN) of the cervical nerves in the neck as a safe, effective, comfortable and non-pharmacological therapy for decreasing anxiety and enhancing sleep quality in ASD.

Methods: In this blinded, sham-controlled study, seven adolescents and young adults with high-functioning ASD underwent five consecutive treatment days, one day of the sham followed by four days of subthreshold TEN for 20 min.

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Article Synopsis
  • X-linked dystonia parkinsonism (XDP), also known as "Lubag," is a genetic condition predominantly seen in Filipinos, characterized by symptoms of both dystonia and parkinsonism that can respond to levodopa treatment.
  • The study focused on analyzing skin biopsies for phosphorylated α-synuclein (P-SYN) in XDP patients, utilizing a retrospective chart review of six individuals with the XDP gene mutation.
  • Findings revealed that among the patients studied, five displayed dystonia and parkinsonism, with P-SYN detected in both levodopa-responsive patients and one asymptomatic patient, suggesting that XDP may represent a new form of synucleinopathy or coexist with Parkinson's disease in some cases
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Objective: To report a case series of patients with neuropathic POTS and cutaneous phosphorylated alpha-synuclein (P-SYN) deposition on skin biopsy and compare these to neuropathic POTS patients without P-SYN deposition.

Methods: The medical history, physical examination findings, autonomic function testing, and skin biopsy neuropathology of patients under the age of 50 with a postural tachycardia and a diagnosis of POTS were retrospectively reviewed. Included patients completed the composite autonomic severity score (COMPASS 31), the Wood Mental Fatigue Inventory, the Epworth Sleepiness scale, the REM Behavior Disorder Questionnaire, the Patient-Reported Outcomes Measurement Information System (PROMIS-10), and the Gastroparesis Cardinal Symptom Index.

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