Drug	Gene	Type	Source
methane	CAT	Text_Mining(affects(response to substance))	CTD
methane	CD40LG	Text_Mining(affects(expression))	CTD
methane	GC	Text_Mining(affects(response to substance))	CTD
methane	GSTM1	Text_Mining(affects(response to substance))	CTD
methane	VWF	Text_Mining(increases(expression))	CTD