Observational studyJournal of neurology2024
Expanding clinical profiles and prognostic markers in stiff person syndrome spectrum disorders.
Observational study in Journal of neurology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.
- Comorbid autoimmune disease in stiff-person syndrome spectrum disorder: a systematic review and meta-analysis.Journal of neurology · 2026Pooled it
- Progressive Encephalomyelitis With Rigidity and Myoclonus With Glycine Receptor Antibodies: Clinical Features and Outcomes.Neurology(R) neuroimmunology & neuroinflammation · 2025Pooled it
- Phenotypic Spectrum, Diagnostic Challenges, and Clinical Outcomes in Stiff Person Syndrome: A Single-Center Case Series.Neurology international · 2026Article
- Stiff Person Syndrome: Bridging Neuroimmunology and Rehabilitation for Improved Patient Outcomes.Archives of internal medicine research · 2026Article
- Stiff-Person Syndrome: A Comprehensive Review of a Rare Disease with Emphasis on Pathophysiology, Clinical Features, Diagnostic Challenges and Therapeutic Advances.The Yale journal of biology and medicine · 2026Review
- Fractures beyond spasms: Progressive encephalomyelitis with rigidity and myoclonus associated with GABA-linked bone fragility.eNeurologicalSci · 2026Article
- Long-Term Outcomes in Stiff Person Spectrum Disorder.European journal of neurology · 2026Article
- Acute onset of progressive encephalomyelitis with rigidity and myoclonus complicated by paroxysmal respiratory failure: a case report.BMC neurology · 2026Article
- Case report: Atypical anti-GlyR antibody-positive pediatric progressive encephalomyelitis with rigidity and myoclonus presenting as chronic joint pain.Frontiers in immunology · 2026Article
- Exploring if Longitudinal Changes on PET Imaging Can Serve as a Biomarker for Stiff Person Syndrome Spectrum Disorders.Annals of clinical and translational neurology · 2025Observational
- Core diagnostic features of stiff person syndrome: insights from a case-control study.Journal of neurology · 2025Article
- Clinical Features and Outcomes of Glutamic Acid Decarboxylase-65 Antibody-Associated Pure Cerebellar Ataxia and Stiff Person Syndrome Spectrum Disorders: A Single-Center Cohort Study.European journal of neurology · 2025Observational
- Clinical features of progressive encephalomyelitis with rigidity and myoclonus: Case Report.Frontiers in immunology · 2025Article
- Botulinum toxin as a potential adjunct therapy in stiff person syndrome spectrum disorders.Therapeutic advances in neurological disorders · 2025Article
- Population-Based Study of the Epidemiology of Stiff Person Syndrome in a Large Colorado-Based Health System.Neurology · 2024Article
- Stiff Person Syndrome With Positive Anti-glutamic Acid Decarboxylase (GAD) Autoantibodies.Cureus · 2024Article
- Paraneoplastic Cerebellar Degeneration Associated with Breast Cancer: A Case Report and a Narrative Review.Brain sciences · 2024Review
Corrections and comments
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Authors and funding
17 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo describe the clinical features of a cohort of individuals with stiff person syndrome spectrum disorders (SPSD) and identify potential early predictors of future disability.
backgroundThere is a need to better understand the full spectrum of clinical and paraclinical features and long-term impact of SPSD. DESIGN/
methodsObservational study from 1997 to 2022 at Johns Hopkins. Clinical phenotypes included classic SPS, partial SPS (limb or trunk limited), SPS-plus (classic features plus cerebellar/brainstem involvement), and progressive encephalomyelitis with rigidity and myoclonus (PERM). Outcome measures were modified Rankin scale (mRS) and use of assistive device for ambulation. Multivariate logistic regression was used to assess significant predictors of outcomes.
resultsCohort included 227 individuals with SPSD with mean follow-up of 10 years; 154 classic, 48 SPS-plus, 16 PERM, and 9 partial. Mean age at symptom onset was 42.9 ± 14.1 years, majority were white (69.2%) and female (75.8%). Median time to diagnosis was 36.2 months (longest for SPS-plus and PERM) and 61.2% were initially misdiagnosed. Most had systemic co-morbidities and required assistive devices for ambulation. Female sex (OR 2.08; CI 1.06-4.11) and initial brainstem/cerebellar involvement (OR 4.41; CI 1.63-14.33) predicted worse outcome by mRS. Older age at symptom onset (OR 1.04; CI 1.01-1.06), female sex (OR 1.99; CI 1.01-4.01), Black race (OR 4.14; CI 1.79-10.63), and initial brainstem/cerebellar involvement (OR 2.44; CI 1.04-7.19) predicted worse outcome by use of assistive device. Early implementation of immunotherapy was associated with better outcomes by either mRS (OR 0.45; CI 0.22-0.92) or use of assistive device (OR 0.79; CI 0.66-0.94).
conclusionsWe present the expanding phenotypic variability of this rare spectrum of disorders and highlight potential predictors of future disability.
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Registered trials
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 OpenQuestion graph.