BHMT

betaine--homocysteine S-methyltransferase, the group of Homocysteine methyltransferases

Basic information

Region (hg38): 5:79111809-79132288

Links

ENSG00000145692 ∙ NCBI:635 ∙ OMIM:602888 ∙ HGNC:1047 ∙ Uniprot:Q93088 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

No genCC data.

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the BHMT gene.

• not_specified (49 variants)
• not_provided (4 variants)
• BHMT-related_disorder (1 variants)

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the BHMT gene is commonly pathogenic or not. These statistics are base on transcript: NM_000001713.3. Only rare variants are included in the table.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Effect	Pathogenic	Likely pathogenic	VUS	Likely benign	Benign	Sum
synonymous			2		1	3
missense			49	2	2	53
nonsense						0
start loss						0
frameshift			1			1
splice donor/acceptor (+/-2bp)			1			1
Total	0	0	53	2	3

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
BHMT	protein_coding	protein_coding	ENST00000274353	8	20507

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p
		125700	0	48	125748	0.000191

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	0.147	218	224	0.972	0.0000116	2634
Missense in Polyphen		49	54.959	0.89158		648
Synonymous	1.28	69	84.0	0.822	0.00000479	770
Loss of Function	0.117	21	21.6	0.973	0.00000111	255

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.000581	0.000575
Ashkenazi Jewish	0.00	0.00
East Asian	0.000492	0.000489
Finnish	0.0000462	0.0000462
European (Non-Finnish)	0.000168	0.000167
Middle Eastern	0.000492	0.000489
South Asian	0.000269	0.000229
Other	0.00	0.00

dbNSFP

Source: dbNSFP

• Function: FUNCTION: Involved in the regulation of homocysteine metabolism. Converts betaine and homocysteine to dimethylglycine and methionine, respectively. This reaction is also required for the irreversible oxidation of choline.
• Pathway: Cysteine and methionine metabolism - Homo sapiens (human);Glycine, serine and threonine metabolism - Homo sapiens (human);S-Adenosylhomocysteine (SAH) Hydrolase Deficiency;Methionine Metabolism;3-Phosphoglycerate dehydrogenase deficiency;Methionine Adenosyltransferase Deficiency;Glycine N-methyltransferase Deficiency;Non Ketotic Hyperglycinemia;Glycine and Serine Metabolism;Hypermethioninemia;Methylenetetrahydrofolate Reductase Deficiency (MTHFRD);Betaine Metabolism;Homocystinuria-megaloblastic anemia due to defect in cobalamin metabolism, cblG complementation type;sarcosine oncometabolite pathway ;Dimethylglycine Dehydrogenase Deficiency;Hyperglycinemia, non-ketotic;Dimethylglycine Dehydrogenase Deficiency;Sarcosinemia;Cystathionine Beta-Synthase Deficiency;Dihydropyrimidine Dehydrogenase Deficiency (DHPD);One Carbon Metabolism;Trans-sulfuration and one carbon metabolism;Methionine De Novo and Salvage Pathway;Amino Acid metabolism;One carbon metabolism and related pathways;Metabolism of amino acids and derivatives;Glycine Serine metabolism;Metabolism;Choline catabolism;Methionine Cysteine metabolism;glycine betaine degradation;methionine salvage;superpathway of choline degradation to L-serine;Sulfur amino acid metabolism (Consensus)

Recessive Scores

• pRec: 0.225

Intolerance Scores

• loftool: 0.850
• rvis_EVS: -0.05
• rvis_percentile_EVS: 50.22

Essentials

• essential_gene_CRISPR: N
• essential_gene_CRISPR2: N
• essential_gene_gene_trap: N
• gene_indispensability_pred: E
• gene_indispensability_score: 0.813

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	Medium
Cancer	Medium	Medium	Medium

Zebrafish Information Network

• Gene name: bhmt
• Affected structure: pancreatic B cell
• Phenotype tag: abnormal
• Phenotype quality: increased amount

Gene ontology

• Biological process: sulfur amino acid metabolic process;protein methylation;amino-acid betaine metabolic process;amino-acid betaine catabolic process;choline catabolic process;S-adenosylmethionine metabolic process;regulation of homocysteine metabolic process;L-methionine salvage
• Cellular component: cytosol;extracellular exosome
• Molecular function: zinc ion binding;betaine-homocysteine S-methyltransferase activity