Williams Syndrome: The people who are too friendly

a year ago

Williams Syndrome (WS) is a rare genetic condition affecting 1 in 7,500 individuals, characterized by extreme friendliness and trust towards strangers.
People with WS often struggle with maintaining close friendships and are vulnerable to abuse due to their excessive openness and lack of suspicion.
WS is associated with health issues like cardiovascular disease, developmental delays, and learning disabilities, alongside lower average IQ.
The condition results from a deletion of 25-27 genes on chromosome 7, including ELN (affecting tissue elasticity) and BAZ1B (affecting neural-crest cells).
GTF2I gene is suspected to influence sociability; its absence in animals leads to increased social behavior, and its duplication in humans is linked to autism.
Research suggests impaired myelination in WS affects brain communication, particularly between the amygdala and frontal cortex, reducing fear of strangers.
Clemastine, an allergy drug, is being tested to improve myelination in WS patients, with clinical trials ongoing.
WS individuals show increased oxytocin levels and more synaptic connections in the brain, possibly explaining their heightened sociability.
The balance of GTF2I gene expression is crucial for human social traits, with evolution fine-tuning it to optimize sociability and survival.

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