2.1.1.8	Adenoma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=17562176&form=6&db=m	Decreased histamine catabolism in the colonic mucosa of patients with colonic adenoma.	causal interaction,diagnostic usage,unassigned	4,4,0	
2.1.1.8	Alzheimer Disease	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=21138759&form=6&db=m	No association between histamine N-methyltransferase functional polymorphism Thr105Ile and Alzheimer's disease.	causal interaction,diagnostic usage,ongoing research,unassigned	4,1,2,0	
2.1.1.8	Amyotrophic Lateral Sclerosis	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=29564728&form=6&db=m	Determining the Effect of the HNMT, STK39, and NMD3 Polymorphisms on the Incidence of Parkinson's Disease, Amyotrophic Lateral Sclerosis, and Multiple System Atrophy in Chinese Populations.	causal interaction,diagnostic usage,ongoing research,therapeutic application	3,3,1,4	
2.1.1.8	Arthus Reaction	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=2936618&form=6&db=m	Histamine metabolism in the Arthus reaction.	diagnostic usage,ongoing research,unassigned	1,2,0	
2.1.1.8	Arthus Reaction	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=2958359&form=6&db=m	Biogenic amines in the Arthus reaction.	diagnostic usage,unassigned	3,0	
2.1.1.8	Asthma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10752634&form=6&db=m	Lack of association between atopic asthma and polymorphisms of the histamine H1 receptor, histamine H2 receptor, and histamine N-methyltransferase genes.	ongoing research,unassigned	2,0	
2.1.1.8	Asthma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10803682&form=6&db=m	Histamine N-methyltransferase pharmacogenetics: association of a common functional polymorphism with asthma.	causal interaction,ongoing research,unassigned	4,2,0	
2.1.1.8	Asthma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=11549275&form=6&db=m	Theoretical 3D model of histamine N-methyltransferase: insights into the effects of a genetic polymorphism on enzymatic activity and thermal stability.	causal interaction,unassigned	3,0	
2.1.1.8	Asthma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=15693910&form=6&db=m	No association of histamine- N-methyltransferase polymorphism with asthma or bronchial hyperresponsiveness in two German pediatric populations.	unassigned	-	
2.1.1.8	Asthma	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=16205835&form=6&db=m	Lack of association of histamine-N-methyltransferase (HNMT) polymorphisms with asthma in the Indian population.	causal interaction,ongoing research,unassigned	3,2,0