14-104938773-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_138420.4(AHNAK2):c.16678G>A(p.Asp5560Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000031 in 1,613,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

AHNAK2
NM_138420.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.36

Variant links:

Genes affected

AHNAK2 (HGNC:20125): (AHNAK nucleoprotein 2) This gene encodes a large nucleoprotein. The encoded protein has a tripartite domain structure with a relatively short N-terminus and a long C-terminus, separated by a large body of repeats. The N-terminal PSD-95/Discs-large/ZO-1 (PDZ)-like domain is thought to function in the formation of stable homodimers. The encoded protein may play a role in calcium signaling by associating with calcium channel proteins. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2017]

AHNAK2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.043355137).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
AHNAK2	NM_138420.4 linkuse as main transcript	c.16678G>A	p.Asp5560Asn	missense_variant	7/7	ENST00000333244.6
AHNAK2	NM_001350929.2 linkuse as main transcript	c.16378G>A	p.Asp5460Asn	missense_variant	7/7
AHNAK2	XM_024449463.2 linkuse as main transcript	c.16378G>A	p.Asp5460Asn	missense_variant	7/7
AHNAK2	XM_047430904.1 linkuse as main transcript	c.16378G>A	p.Asp5460Asn	missense_variant	7/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AHNAK2	ENST00000333244.6 linkuse as main transcript	c.16678G>A	p.Asp5560Asn	missense_variant	7/7	5	NM_138420.4	P1	Q8IVF2-1
AHNAK2	ENST00000557457.1 linkuse as main transcript	c.1672G>A	p.Asp558Asn	missense_variant	3/3	1			Q8IVF2-2
AHNAK2	ENST00000555122.1 linkuse as main transcript	n.16806G>A		non_coding_transcript_exon_variant	6/6	5

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000723

AC:

AN:

248952

Hom.:

AF XY:

0.0000888

AC XY:

AN XY:

135152

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:

0.000588

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000322

AC:

AN:

1461624

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727084

show subpopulations

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:

0.000522

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000621

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.0000745

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

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

Mar 07, 2024

The c.16678G>A (p.D5560N) alteration is located in exon 7 (coding exon 7) of the AHNAK2 gene. This alteration results from a G to A substitution at nucleotide position 16678, causing the aspartic acid (D) at amino acid position 5560 to be replaced by an asparagine (N). 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

-0.60

BayesDel_noAF

Benign

-0.75

Cadd

Benign

Dann

Uncertain

0.99

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.39

FATHMM_MKL

Benign

0.24

LIST_S2

Benign

0.47

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.043

T;T

MetaSVM

Benign

-0.97

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.29

PROVEAN

Uncertain

-2.5

N;N

REVEL

Benign

0.077

Sift

Benign

0.69

T;T

Sift4G

Benign

0.14

T;T

Polyphen

0.99

.;D

Vest4

0.14

MutPred

0.19

.;Gain of catalytic residue at V5559 (P = 0.025);

MVP

0.048

ClinPred

0.26

GERP RS

3.6

Varity_R

0.052

gMVP

0.010

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