chr17-76468904-G-A

Position:

chr17-76468904-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001088.3(AANAT):c.158G>A(p.Arg53His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,612,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

AANAT
NM_001088.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.49

Variant links:

Genes affected

AANAT (HGNC:19): (aralkylamine N-acetyltransferase) The protein encoded by this gene belongs to the acetyltransferase superfamily. It is the penultimate enzyme in melatonin synthesis and controls the night/day rhythm in melatonin production in the vertebrate pineal gland. Melatonin is essential for the function of the circadian clock that influences activity and sleep. This enzyme is regulated by cAMP-dependent phosphorylation that promotes its interaction with 14-3-3 proteins and thus protects the enzyme against proteasomal degradation. This gene may contribute to numerous genetic diseases such as delayed sleep phase syndrome. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

AANAT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38807213).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
AANAT	NM_001088.3 linkuse as main transcript	c.158G>A	p.Arg53His	missense_variant	2/4	ENST00000392492.8
AANAT	NM_001166579.2 linkuse as main transcript	c.293G>A	p.Arg98His	missense_variant	5/7
AANAT	NR_110548.2 linkuse as main transcript	n.358G>A		non_coding_transcript_exon_variant	2/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AANAT	ENST00000392492.8 linkuse as main transcript	c.158G>A	p.Arg53His	missense_variant	2/4	1	NM_001088.3	P1	Q16613-1
AANAT	ENST00000250615.7 linkuse as main transcript	c.293G>A	p.Arg98His	missense_variant	5/7	1			Q16613-2
AANAT	ENST00000585649.1 linkuse as main transcript	c.272G>A	p.Arg91His	missense_variant	1/3	1
AANAT	ENST00000587798.1 linkuse as main transcript	c.158G>A	p.Arg53His	missense_variant, NMD_transcript_variant	2/4	5

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD3 exomes

AF:

0.00000804

AC:

AN:

248754

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134724

show subpopulations

Gnomad AFR exome

AF:

0.0000617

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:

0.00000895

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1460564

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726560

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 15, 2024

The c.158G>A (p.R53H) alteration is located in exon 2 (coding exon 1) of the AANAT gene. This alteration results from a G to A substitution at nucleotide position 158, causing the arginine (R) at amino acid position 53 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

0.0045

BayesDel_noAF

Uncertain

-0.050

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.16

.;T;.

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

0.98

D;D;D

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.39

T;T;T

MetaSVM

Benign

-0.51

MutationAssessor

Uncertain

2.8

.;M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.4

N;N;.

REVEL

Benign

0.24

Sift

Benign

0.036

D;T;.

Sift4G

Uncertain

0.0040

D;D;D

Polyphen

1.0

.;D;.

Vest4

0.70

MVP

0.77

MPC

0.38

ClinPred

0.96

GERP RS

4.3

Varity_R

0.18

gMVP

0.71

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over