2-137970206-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PP3_StrongPP5

The NM_006895.3(HNMT):​c.179G>A​(p.Gly60Asp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

HNMT
NM_006895.3 missense

Scores

11
5
3

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 5.89
Variant links:
Genes affected
HNMT (HGNC:5028): (histamine N-methyltransferase) In mammals, histamine is metabolized by two major pathways: N(tau)-methylation via histamine N-methyltransferase and oxidative deamination via diamine oxidase. This gene encodes the first enzyme which is found in the cytosol and uses S-adenosyl-L-methionine as the methyl donor. In the mammalian brain, the neurotransmitter activity of histamine is controlled by N(tau)-methylation as diamine oxidase is not found in the central nervous system. A common genetic polymorphism affects the activity levels of this gene product in red blood cells. Multiple alternatively spliced transcript variants that encode different proteins have been found for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM1
In a binding_site (size 0) in uniprot entity HNMT_HUMAN
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.963
PP5
Variant 2-137970206-G-A is Pathogenic according to our data. Variant chr2-137970206-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 219125.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
HNMTNM_006895.3 linkuse as main transcriptc.179G>A p.Gly60Asp missense_variant 2/6 ENST00000280097.5 NP_008826.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
HNMTENST00000280097.5 linkuse as main transcriptc.179G>A p.Gly60Asp missense_variant 2/61 NM_006895.3 ENSP00000280097 P1P50135-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000412
AC:
1
AN:
242458
Hom.:
0
AF XY:
0.00000763
AC XY:
1
AN XY:
131016
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000896
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1414398
Hom.:
0
Cov.:
23
AF XY:
0.00
AC XY:
0
AN XY:
705472
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Intellectual disability, autosomal recessive 51 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMOct 15, 2015- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.43
D
BayesDel_noAF
Pathogenic
0.38
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Benign
0.40
T;.;T
Eigen
Pathogenic
0.82
Eigen_PC
Pathogenic
0.74
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Benign
0.85
.;D;D
M_CAP
Pathogenic
0.33
D
MetaRNN
Pathogenic
0.96
D;D;D
MetaSVM
Uncertain
0.72
D
MutationAssessor
Pathogenic
3.1
M;M;M
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Uncertain
0.63
T
PROVEAN
Pathogenic
-6.3
D;D;D
REVEL
Pathogenic
0.91
Sift
Uncertain
0.0030
D;D;D
Sift4G
Pathogenic
0.0
D;D;D
Polyphen
1.0
D;D;D
Vest4
0.96
MutPred
0.85
Loss of ubiquitination at K55 (P = 0.0877);Loss of ubiquitination at K55 (P = 0.0877);Loss of ubiquitination at K55 (P = 0.0877);
MVP
0.98
MPC
0.43
ClinPred
0.99
D
GERP RS
5.3
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.93
gMVP
0.82

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs758252808; hg19: chr2-138727776; API