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Updated: Feb 24, 2026

Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
Published on: June 13, 2025
Crowdsourcing-Based Knowledge Graph Construction for Drug Side Effects Using Large Language Models with an
Zhijie Duan1, Kai Wei2, Zhaoqian Xue3
1University of Pennsylvania, Philadelphia, PA.
Large language models (LLMs) extract medication side effects from social media, creating knowledge graphs for pharmacovigilance. This approach offers patient-centered insights into semaglutide side effects, complementing existing safety data.
Area of Science:
- Pharmacovigilance and Drug Safety
- Artificial Intelligence in Healthcare
- Social Media Data Mining
Background:
- Social media provides valuable real-world patient experience data for pharmacovigilance.
- Extracting structured information from noisy social media content is challenging.
Purpose of the Study:
- To present a systematic framework using large language models (LLMs) to extract medication side effects from social media.
- To organize extracted data into a knowledge graph (KG) for comprehensive analysis.
- To investigate semaglutide side effects for weight loss using Reddit data.
Main Methods:
- Developed a framework leveraging LLMs for automated extraction of medication side effects from social media.
- Applied the framework to semaglutide data from Reddit, constructing a knowledge graph.
- Analyzed reported side effects across different semaglutide brands and over time.
- Validated findings by comparing with the FAERS database.
Main Results:
- Successfully extracted and structured medication side effects from social media data using LLMs.
- Generated a knowledge graph detailing semaglutide side effects reported on Reddit.
- Identified patient-centered insights into semaglutide's safety profile, complementing FAERS data.
Conclusions:
- LLMs can effectively transform unstructured social media data into structured knowledge graphs for pharmacovigilance.
- This framework provides valuable patient-centered insights into drug side effects, enhancing safety monitoring.
- The approach demonstrates feasibility for broader applications in pharmacovigilance and real-world evidence generation.
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Pharmacovigilance
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In some cases, there...
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