dbSNP rs143524297: ASMT:p.Tyr229* (chrX-1633190-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001171038.2(ASMT):c.687C>A(p.Tyr229*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,613,682 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 33 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., 21 hem., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. 12 hem. )

Consequence

ASMT
NM_001171038.2 stop_gained

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.185

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]

ASMT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High Hemizygotes in GnomAd4 at 21 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASMT	NM_001171038.2 link	c.687C>A	p.Tyr229*	stop_gained	Exon 7 of 9	ENST00000381241.9	NP_001164509.1	P46597-3A0A024RBT9
ASMT	NM_001416525.1 link	c.603C>A	p.Tyr201*	stop_gained	Exon 6 of 8		NP_001403454.1
ASMT	NM_001171039.1 link	c.563-3248C>A		intron_variant	Intron 5 of 6		NP_001164510.1	P46597-2X5D784

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ASMT	ENST00000381241.9 link	c.687C>A	p.Tyr229*	stop_gained	Exon 7 of 9	1	NM_001171038.2	ENSP00000370639.3	P46597-3
ASMT	ENST00000381229.9 link	c.603C>A	p.Tyr201*	stop_gained	Exon 6 of 8	1		ENSP00000370627.4	P46597-1
ASMT	ENST00000381233.8 link	c.563-3248C>A		intron_variant	Intron 5 of 6	1		ENSP00000370631.3	P46597-2
ASMT	ENST00000509780.6 link	n.289-3052C>A		intron_variant	Intron 1 of 1	1

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152016

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000918

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000597

AC:

AN:

251180

AF XY:

0.0000442

show subpopulations

Gnomad AFR exome

AF:

0.000800

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461666

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727144

show subpopulations

African (AFR)

AF:

0.000657

AC:

AN:

33472

American (AMR)

AF:

0.000134

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111838

Other (OTH)

AF:

0.0000331

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000263

AC:

AN:

152016

Hom.:

Cov.:

AF XY:

0.000283

AC XY:

AN XY:

74246

show subpopulations

African (AFR)

AF:

0.000918

AC:

AN:

41396

American (AMR)

AF:

0.000131

AC:

AN:

15224

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10590

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Bravo

AF:

0.000261

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Aug 22, 2019

Revvity Omics, Revvity

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.49

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

FATHMM_MKL

Benign

0.34

PhyloP100

0.18

Vest4

0.28

GERP RS

0.28

Mutation Taster

=6/194

disease causing (fs/PTC)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

Details are displayed if max score is > 0.2

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

Publications

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rs143524297

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over