The Aim of the Study is to Characterize Patients Exhibiting Muscular Atrophy and Weakness Who Require a Muscle Biopsy for Diagnosis (IBM vs Atypical MND), Through an Innovative Technique Which Enables the Evaluation of the Neuromuscular Junction Involvement in Each Condition (TDP-signatures)
Comparative Analysis of TDP-43 Pathology in Skeletal Muscle Biopsies With Electrostimulation for Enhanced Neuromuscular Junction Sampling in Patients Affected by Inclusion Body Myopathy (IBM) and Motor Neuron Disease (MND)
Studieoversigt
Status
Status
Betingelser
Betingelser
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Kontakter og lokationer
Studiesteder
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Milan, Italien
- IRCCS Ospedale San Raffaele
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Patients exhibiting progressive muscle weakness and atrophy with a classic clinical IBM pattern or with an atypical clinical IBM pattern or with an atypical MND pattern
- Able to understand and sign the informed consent
- Treated according to standard of care clinical practice
Exclusion Criteria:
- Contraindications to needle EMG or skeletal muscle biopsy
- Psychiatric diseases that may interfere with adherence to the follow-up protocol
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
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Motor neuron sygdom
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Inclusion body myopathy
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Diagnostic sensitivity of an integrated clinical, neurophysiological, metabolic and histopathological model in the differential diagnosis between IBM and MND.
Tidsramme: At the end of the follow-up period (24 months of follow-up)
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To achieve a diagnostic sensitivity of >90% for the differential diagnosis between IBM and MND integrating clinical variables (site of onset, scales reflecting disease progression rate, muscle strength), neurophysiological indices (presence and degree of active denervation signs, presence of myopathic or neurogenic motor unit potentials), histopathological parameters (myopathic or neuropathic pattern of disease) and metabolic measures (hyper- vs hypo-metabolism) into a multivariable binary logistic regression model, using the final diagnosis confirmed during longitudinal follow-up as the reference standard.
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At the end of the follow-up period (24 months of follow-up)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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To evaluate signs of muscle and neuromuscular junction (NMJ) involvement at neuropathological level in each disease
Tidsramme: At the end of the follow-up period (24 months of follow-up)
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To investigate disease-specific histological signatures, comparing the pattern of fiber degeneration, the presence of inflammatory infiltrates, the presence of protein aggregation markers (such as pTDP-43) and their localization, the presence of mitochondrial changes (the percentage of age-exceeding number of COX-negative fibers) and the NMJ involvement by evaluating the presynaptic and postsynaptic integrity (quantified as the percentage of synaptophysin and Ach-R clustering, respectively) between IBM and MND (through Fisher's exact test or Mann-Whitney U test, as appropriate) and to evaluate the prognostic role of each histological parameter (through Kaplan-Meier followed by log-rank test and Cox proportional hazards regression).
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At the end of the follow-up period (24 months of follow-up)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
- Muskuloskeletale sygdomme
- Sygdomme i centralnervesystemet
- Sygdomme i nervesystemet
- Muskelsygdomme
- Neuromuskulære sygdomme
- Metaboliske sygdomme
- Neurodegenerative sygdomme
- Rygmarvssygdomme
- TDP-43 Proteinopatier
- Proteostase mangler
- Motor neuron sygdom
- Myositis
- Ernæringsmæssige og metaboliske sygdomme
- Amyotrofisk lateral sklerose
- Myositis, Inklusionslegeme
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- TDP-signatures
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