Multiple sclerosis journal - experimental, translational and clinical · 2026
Large language models as clinical decision-support tools in multiple sclerosis and neuromyelitis optica spectrum disorders: A comparative study of ChatGPT-4o and neurologists.
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Saposnik Gustavo, Solanes Aleix, Monreal Enric, Sepúlveda María, Hernández Miguel Á, Cuello Juan P, Álvarez-Bravo Gary, Agüera-Morales Eduardo, Riancho Javier, Pérez-Sempere Ángel, Maurino Jorge, Gómez-Ballesteros Rocío
Аннотация
BACKGROUND: Therapeutic inertia (TI) remains a critical barrier to optimizing outcomes in multiple sclerosis (MS) and neuromyelitis optica spectrum disorders (NMOSDs).
OBJECTIVE: We evaluated the proficiency of ChatGPT-4o in addressing complex neuro-immunological management challenges compared to practicing neurologists.
METHODS: We conducted a comparative analysis using 21 clinical vignettes derived from a multicenter research framework. Responses from 290 neurologists were benchmarked against ChatGPT-4o, both with and without Retrieval-Augmented Generation (RAG). The primary endpoint was guideline-adherent decision-making at the item level, with the prevalence of TI as a secondary clinical outcome. Scenarios included MS therapy escalation, aquaporin-4-IgG positive NMOSD management, and serum neurofilament light chain integration.
RESULTS: ChatGPT-4o with RAG achieved significantly higher guideline adherence in decision-making than neurologists (80.5% vs. 66.5%; p = 0.001). Multivariable generalized estimating equation models identified ChatGPT-4o as an independent predictor of evidence-based decision-making (Odds ratio 3.17; 95% confidence interval: 2.05-4.88; p < 0.0001). While the model demonstrated a lower propensity for TI overall, performance parity occurred in emerging biomarker scenarios where clinical consensus is still evolving.
CONCLUSIONS: ChatGPT-4o demonstrated superior guideline adherence and reduced TI compared to neurologists. Integrating Large Language Models as clinical decision-support tools may enhance the standardization of neuro-immunological care and serve as a valuable adjunct to mitigate human cognitive biases.
OBJECTIVE: We evaluated the proficiency of ChatGPT-4o in addressing complex neuro-immunological management challenges compared to practicing neurologists.
METHODS: We conducted a comparative analysis using 21 clinical vignettes derived from a multicenter research framework. Responses from 290 neurologists were benchmarked against ChatGPT-4o, both with and without Retrieval-Augmented Generation (RAG). The primary endpoint was guideline-adherent decision-making at the item level, with the prevalence of TI as a secondary clinical outcome. Scenarios included MS therapy escalation, aquaporin-4-IgG positive NMOSD management, and serum neurofilament light chain integration.
RESULTS: ChatGPT-4o with RAG achieved significantly higher guideline adherence in decision-making than neurologists (80.5% vs. 66.5%; p = 0.001). Multivariable generalized estimating equation models identified ChatGPT-4o as an independent predictor of evidence-based decision-making (Odds ratio 3.17; 95% confidence interval: 2.05-4.88; p < 0.0001). While the model demonstrated a lower propensity for TI overall, performance parity occurred in emerging biomarker scenarios where clinical consensus is still evolving.
CONCLUSIONS: ChatGPT-4o demonstrated superior guideline adherence and reduced TI compared to neurologists. Integrating Large Language Models as clinical decision-support tools may enhance the standardization of neuro-immunological care and serve as a valuable adjunct to mitigate human cognitive biases.