Ciliary neurotrophic factor (CNTF) is a protein which functions mainly in the nervous system. It is involved in neurotransmitter synthesis and nerve growth as well as protecting against inflammation. Variations in the CNTF gene affect the levels of CNTF protein and are associated with body composition and strength gains.


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Global population distribution:

Source: 1000 Genome Project.  Global averages for both sexes

CNTF: GG

78%

CNTF: AG

20%

CNTF: AA

2%

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