Evidence map›Paper›PMID 42377136›Full record

ArticleAnnals of Indian Academy of Neurology2026

A Prospective Study on Autonomic Functions in Idiopathic Inflammatory Myopathies: The AFIIM Study.

M M Samim, Ganagarajan Inbaraj, Talakad N Sathyaprabha, Ashita Barthur, Seena Vengalil, Saraswati Nashi, Deepak Menon, Nandan Chandregowda, Dipti Baskar, Vidya Nittur and 2 more

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Article in Annals of Indian Academy of Neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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12 authors.

M M SamimDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Ganagarajan InbarajDepartment of Neurophysiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Talakad N SathyaprabhaDepartment of Radiology, Sri Jayadeva Institute for Cardiovascular Sciences and Research, Bengaluru, Karnataka, India.
Ashita BarthurDepartment of Radiology, Sri Jayadeva Institute for Cardiovascular Sciences and Research, Bengaluru, Karnataka, India.
Seena VengalilDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Saraswati NashiDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Deepak MenonDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Nandan ChandregowdaDepartment of Neurophysiology, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India.
Dipti BaskarDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Vidya NitturDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Priya Treesa ThomasDepartment of Psychiatric Social Work, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India.
Atchayaram NaliniDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesDysautonomia in idiopathic inflammatory myopathies (IIM) is an underrecognized and poorly characterized manifestation, despite its potential implications for disease prognosis and clinical management. In this study, we assessed autonomic dysfunction in patients with IIM and investigated its correlation with cardiac imaging biomarkers based on cardiac magnetic resonance imaging (CMRI).

methodsThe study recruited clinically suspected IIM patients aged 10-60 years and age- and sex-matched healthy controls. Evaluations included myositis disease activity assessment tool (MDAAT), autonomic function testing (AFT), tilt table test (TTT), and CMRI with multiparametric mapping.

resultsAmong 31 diagnosed cases of IIM, 28 patients underwent AFT and TTT. Of these, 12 had dermatomyositis, 7 had overlap myositis, 7 had immune-mediated necrotizing myopathy, and 2 had anti-synthetase syndrome. The mean age of onset was 33±12.92 years, with an average illness duration of 16.63±19.43 months, and a female predominance (F:M = 2.1:1). The patients exhibited a lower median total autonomic power (563.2, interquartile range [IQR] = 209.6-1964.6 vs 1606.5, IQR = 1048.6-2676; P = 0.003). The TTT was positive in 10.9% cases. The mean standard deviation of normal-to-normal intervals (SDNN) was lower among the patients (31.7 ± 22.3 vs 43.4 ± 13.7; P = 0.023). SDNN and total autonomic power were negatively correlated with native-T1-mapping (ρ = -0.537, P = 0.009; ρ = -0.638, P = 0.007). An SDNN cut-off of ≤28.68 had a sensitivity of 83.3% and specificity of 76.0% (area under the curve [AUC] = 0.773, P = 0.030), whereas a total power of ≤725.81 had a sensitivity of 83.3% and specificity of 74.0% (AUC = 0.760, P = 0.039) in diagnosing cardiac involvement in IIM.

conclusionsIn this first-of-its-kind study integrating AFT and TTT with CMR to evaluate IIM, patients demonstrated significant autonomic dysfunction, with AFT parameters showing a correlation with CMR findings, thus indicating their potential as a simple predictor of cardiac involvement.

Indexed as

Autonomic functionscardiac mappingcardiac MRIEwing batterymyositis

Identifiers

PMID42377136
PMCPMC13544894

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.