Cited by 38T-cell and Retrovirus StudiesCervical and Thoracic MyelopathyInfectious Diseases and Tuberculosis

Ciclosporin A Proof of Concept Study in Patients with Active, Progressive HTLV-1 Associated Myelopathy/Tropical Spastic Paraparesis

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Martin, Fabiola, Castro, Hannah, Gabriel, Carolyn, Adonis, Adine, Fedina, Alexandra, Harrison, Linda, Brodnicki, Liz, Demontis, Maria A. +4 more·2012·PLoS Neglected Tropical Diseases

Abstract

INTRODUCTION: Patients with HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) become progressively impaired, with chronic pain, immobility and bladder, bowel and sexual dysfunction. Tested antiretroviral therapies have not been effective and most patients are offered a short course of corticosteroids or interferon-α, physiotherapy and symptomatic management. Pathogenesis studies implicate activated T-lymphocytes and cytokines in tissue damage. We therefore tested the hypothesis that inhibition of T-cell activation with ciclosporin A would be safe and clinically beneficial in patients with early and/or clinically progressing HAM/TSP. MATERIALS AND METHODS: Open label, proof of concept, pilot study of 48 weeks therapy with the calcineurin antagonist, ciclosporin A (CsA), in seven patients with 'early' (<two years) or 'progressive' (>50% deterioration in timed walk during the preceding three months) HAM/TSP. Primary outcomes were incidence of clinical failure at 48 weeks and time to clinical failure. RESULTS: All patients completed 72 weeks study participation and five showed objective evidence of clinical improvement after 3 months treatment with CsA. Two patients exhibited clinical failure over 6.4 person-years of follow-up to week 48. One patient had a >2 point deterioration in IPEC (Insituto de Pesquisa Clinica Evandro Chagas) disability score at weeks 8 and 12, and then stopped treatment. The other stopped treatment at week 4 because of headache and tremor and deterioration in timed walk, which occurred at week 45. Overall pain, mobility, spasticity and bladder function improved by 48 weeks. Two patients recommenced CsA during follow-up due to relapse. CONCLUSIONS: These data provide initial evidence that treatment with CsA is safe and may partially reverse the clinical deterioration seen in patients with early/progressive HAM/TSP. This trial supports further investigation of this agent's safety and effectiveness in larger, randomised controlled studies in carefully selected patients with disease progression.

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Crossref · 10.1371/journal.pntd.0001675

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  • A 2012 proof-of-concept study reported that cyclosporin A reversed clinical deterioration in early-phase HAM patients.

    “Notably a proof-of-concept study was conducted in 2012, which reported that cyclosporin A reversed clinical deterioration in early-phase HAM patients [247].”

    From Current State of Therapeutics for HTLV-1 (2024) · cites this paper as [247]

    The Discussion (page not specified) reports improved outcomes in patients with early or progressing HAM/TSP, and the Results report objective improvement during treatment. But the study describes an association in a small open-label trial, not a definitive reversal of deterioration; two of seven patients had clinical failure. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Cyclosporin A has been used as a steroid-sparing therapy and was demonstrated to decrease HTLV-1 PVL and show clinical improvement in HAM patients.

    “The calcineurin inhibitor, cyclosporin A, has been used as a steroid-sparing therapy and was demonstrated to decrease HTLV-1 PVL and show clinical improvement in HAM patients.”

    From Current State of Therapeutics for HTLV-1 (2024) · cites this paper as [247]

    The Results (Secondary outcomes, page unavailable) report reduced HTLV-1 proviral load in blood and CSF, and the Abstract Results report clinical improvement during ciclosporin A treatment. The Discussion calls it a steroid-sparing agent, but describes the improved outcomes as an association in patients with early or progressing HAM/TSP. The claim omits that restricted population and presents preliminary findings more definitively than the paper does. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

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Authors
Martin, F., Castro, H., Gabriel, C., Adonis, A., Fedina, A., Harrison, L., Brodnicki, L., Demontis, M. A., Babiker, A. G., Weber, J. N., Bangham, C. R. M., & Taylor, G. P.
Affiliations
  • University of York (GB)
  • Medical Research Council (GB)
  • St Mary's Hospital (GB)
  • Imperial College London (GB)
Corresponding author
Martin, Fabiola
Venue
PLoS Neglected Tropical Diseases
Published
2012-06-12
Volume
6
Issue
6
Pages
e1675
ISSN
  • 1935-2727 (ISSN-L)
  • 1935-2735
OpenAlex
W2150853065
Cited by
38
References
30
Citations by year
2025: 2 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 2 · 2020: 5 · 2019: 1 · 2018: 5 · 2017: 2 · 2016: 3 · 2015: 3 · 2014: 4 · 2013: 2 · 2012: 1
FWCI
1.40
Type
journal article
Language
en
Open access
Locations
  • PLoS neglected tropical diseases (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Spiral (Imperial College London) (submittedVersion, other-oa)
Funders
  • National Institute for Health and Care Research (NF-SI-0507-10313)
  • Medical Research Council
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and Retrovirus Studies
  • Health Sciences › Medicine › Surgery › Cervical and Thoracic Myelopathy
  • Health Sciences › Medicine › Surgery › Infectious Diseases and Tuberculosis
Keywords
HTLV-1-associated myelopathy/tropical spastic paraparesis, cyclosporine, calcineurin inhibitors, T cell activation inhibition, disease progression, disability score, spasticity, neurodegeneration, immunosuppressive therapy
MeSH terms
Adult, Aged, Female, Humans, Immunosuppressive Agents, Male, Middle Aged, Pilot Projects, Paraparesis, Tropical Spastic, Cyclosporine, Treatment Outcome

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