Related Experiment Videos
Association Between Statin Initiation and Myasthenia Gravis Crisis
Woo Hyeon Yoo1, Yunha Noh2, Seung Woo Kim3
1Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, Korea.
Journal of Clinical Neurology (Seoul, Korea)
|July 9, 2026
Summary
Statin use may increase the risk of myasthenia gravis (MG) crisis shortly after initiation, especially in older adults and females. Monitoring is advised during the initial phase of statin therapy for patients with MG.
Area of Science:
- Neurology
- Pharmacology
- Epidemiology
Background:
- Statins are commonly prescribed for cardiovascular disease prevention.
- Concerns exist regarding statins potentially triggering or worsening myasthenia gravis (MG).
Purpose of the Study:
- To evaluate the association between statin initiation and the risk of myasthenia gravis (MG) crisis.
- To investigate the temporal relationship between statin use and MG exacerbation.
Main Methods:
- A self-controlled case series (SCCS) design was employed.
- Nationwide Korean claims data from 2007-2023 were analyzed.
- Patients with MG and at least one crisis around statin initiation were included.
Main Results:
- Statin initiation was linked to a significantly higher risk of MG crisis within the first 30 days (IRR=3.60).
- No increased risk was observed in later periods (31-365 days).
- Elevated risk was noted in patients aged ≥65 years (IRR=10.31) and females (IRR=3.71).
Conclusions:
- Statin initiation poses an increased risk of MG crisis in the early post-initiation period.
- Long-term statin use did not show an elevated risk of MG crisis.
- Close monitoring is recommended for MG patients starting statins, particularly the elderly and females.
Related Concept Videos
01:20Myasthenia Gravis: Overview and Treatment
Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
01:15Myasthenia Gravis: Diagnostic Tests
Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
01:22Myasthenia Gravis ll: Pathophysiology
The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...
01:28Disorders of the Skeletal Muscle
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
01:20Lipid-Lowering Drugs: Statins and Miscellaneous Agents
Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
01:26Chemical Synapses
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...