rs17149149

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_001171038.2(ASMT):​c.51C>A​(p.Asn17Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0031 in 1,595,758 control chromosomes in the GnomAD database, including 126 homozygotes. There are 3,268 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 11/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0030 ( 8 hom., 273 hem., cov: 31)
Exomes 𝑓: 0.0031 ( 118 hom. 2995 hem. )

Consequence

ASMT
NM_001171038.2 missense

Scores

4
11

Clinical Significance

Uncertain significance criteria provided, single submitter U:1B:1

Conservation

PhyloP100: -0.865

Publications

0 publications found
Variant links:
Genes affected
ASMT (HGNC:750): (acetylserotonin O-methyltransferase) This gene belongs to the methyltransferase superfamily, and is located in the pseudoautosomal region (PAR) at the end of the short arms of the X and Y chromosomes. The encoded enzyme catalyzes the final reaction in the synthesis of melatonin, and is abundant in the pineal gland. Alternatively spliced transcript variants have been noted for this gene. [provided by RefSeq, Jan 2010]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0063019395).
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00298 (453/152184) while in subpopulation SAS AF = 0.0386 (186/4824). AF 95% confidence interval is 0.034. There are 8 homozygotes in GnomAd4. There are 273 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
BS2
High Homozygotes in GnomAd4 at 8 gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ASMTNM_001171038.2 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 9 ENST00000381241.9 NP_001164509.1 P46597-3A0A024RBT9
ASMTNM_001416525.1 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 8 NP_001403454.1
ASMTNM_001171039.1 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 7 NP_001164510.1 P46597-2X5D784

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ASMTENST00000381241.9 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 9 1 NM_001171038.2 ENSP00000370639.3 P46597-3
ASMTENST00000381229.9 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 8 1 ENSP00000370627.4 P46597-1
ASMTENST00000381233.8 linkc.51C>A p.Asn17Lys missense_variant Exon 1 of 7 1 ENSP00000370631.3 P46597-2

Frequencies

GnomAD3 genomes
AF:
0.00295
AC:
449
AN:
152066
Hom.:
8
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00227
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000788
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.0278
Gnomad SAS
AF:
0.0383
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000882
Gnomad OTH
AF:
0.00382
GnomAD2 exomes
AF:
0.00680
AC:
1492
AN:
219496
AF XY:
0.00843
show subpopulations
Gnomad AFR exome
AF:
0.00279
Gnomad AMR exome
AF:
0.000739
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0279
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000103
Gnomad OTH exome
AF:
0.00216
GnomAD4 exome
AF:
0.00312
AC:
4501
AN:
1443574
Hom.:
118
Cov.:
32
AF XY:
0.00418
AC XY:
2995
AN XY:
716094
show subpopulations
African (AFR)
AF:
0.00232
AC:
77
AN:
33192
American (AMR)
AF:
0.000670
AC:
28
AN:
41800
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25712
East Asian (EAS)
AF:
0.0225
AC:
879
AN:
39034
South Asian (SAS)
AF:
0.0382
AC:
3168
AN:
82990
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52132
Middle Eastern (MID)
AF:
0.00314
AC:
18
AN:
5736
European-Non Finnish (NFE)
AF:
0.0000625
AC:
69
AN:
1103218
Other (OTH)
AF:
0.00438
AC:
262
AN:
59760
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.454
Heterozygous variant carriers
0
251
501
752
1002
1253
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
66
132
198
264
330
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00298
AC:
453
AN:
152184
Hom.:
8
Cov.:
31
AF XY:
0.00367
AC XY:
273
AN XY:
74392
show subpopulations
African (AFR)
AF:
0.00226
AC:
94
AN:
41556
American (AMR)
AF:
0.000787
AC:
12
AN:
15246
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.0279
AC:
144
AN:
5166
South Asian (SAS)
AF:
0.0386
AC:
186
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10598
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000882
AC:
6
AN:
68000
Other (OTH)
AF:
0.00520
AC:
11
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.507
Heterozygous variant carriers
0
22
44
65
87
109
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Bravo
AF:
0.00242
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000519
AC:
2
ESP6500AA
AF:
0.00204
AC:
9
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.00652
AC:
789

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Uncertain:1
Nov 13, 2023
Revvity Omics, Revvity
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

ASMT-related disorder Benign:1
Sep 20, 2021
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
-0.65
T
BayesDel_noAF
Benign
-0.68
CADD
Benign
1.8
DANN
Benign
0.97
DEOGEN2
Benign
0.014
.;T;.
FATHMM_MKL
Benign
0.013
N
LIST_S2
Benign
0.68
T;T;T
MetaRNN
Benign
0.0063
T;T;T
MetaSVM
Benign
-0.90
T
MutationAssessor
Uncertain
2.8
M;M;M
PhyloP100
-0.86
PrimateAI
Uncertain
0.72
T
PROVEAN
Uncertain
-3.0
D;D;D
REVEL
Benign
0.14
Sift
Benign
0.044
D;T;T
Sift4G
Uncertain
0.057
T;T;T
Polyphen
0.99
D;.;D
Vest4
0.23
MutPred
0.86
Gain of ubiquitination at N17 (P = 0.0388);Gain of ubiquitination at N17 (P = 0.0388);Gain of ubiquitination at N17 (P = 0.0388);
MVP
0.43
MPC
0.10
ClinPred
0.048
T
GERP RS
-2.3
PromoterAI
-0.036
Neutral
Varity_R
0.32

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs17149149; hg19: chrX-1734143; COSMIC: COSV107494727; API