Key Highlights
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A large study found that people with a genetic profile that put them in ‘cluster 1’ reached major disability milestones from multiple sclerosis up to 13 years later than those in other clusters, showing that genetic makeup can predict disease progression. This discovery could help doctors identify which patients might need more aggressive treatment early on and is a step toward personalized care for MS.
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Another key finding from the same study was that patients in ‘cluster 2’ appeared to benefit from disease-modifying treatments, which delayed their disability, while patients in cluster 1 or 3 did not see the same benefit. This suggests that not all people with MS respond to treatment the same way, and that genetic testing could be used to select the right therapy for the right person, a core concept of precision medicine.
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A 20-year study of over 1,300 adults showed that poor sleep in early midlife—including longer sleep duration, poor quality, and daytime sleepiness—was linked to worse biomarkers for Alzheimer’s disease later in life. This finding supports the idea that sleep is a potentially modifiable risk factor for Alzheimer’s, meaning that improving sleep habits decades earlier could help protect the brain.
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