20219
The SNP rs17782313 near the MC4R gene was associated with mean body mass index in the Bundang - gu cohort ( effect per allele 0 . 288 kg / m ( 2 ) , p = 0 . 0023 ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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