Exciting news! A major study published in Nature Genetics has identified four biologically distinct autism subtypes based on genetic and clinical data. These subtypes show unique gene expression patterns and symptom profiles, which could lead to more personalized diagnoses and treatments.

Key findings:
- Two subtypes show high impairment in social/behavioral traits
- Others have distinct sensory or developmental patterns
- Each has specific biological pathways involved

This research (from Princeton and other institutions) analyzed over 5,000 children's data. It's a big step toward precision autism care.

Sources: Autism Speaks, Scientific American, and Princeton University (all linked in my web search). Let me know if you'd like details on any specific subtype!

(Note: Always verify new findings with your care team.)