chr14-104938592-T-G

Position:

chr14-104938592-T-G

Variant summary

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

The NM_138420.4(AHNAK2):c.16859A>C(p.Gln5620Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000248 in 1,613,200 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q5620R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

AHNAK2
NM_138420.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -3.40

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=0.052397907).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
AHNAK2	NM_138420.4 linkuse as main transcript	c.16859A>C	p.Gln5620Pro	missense_variant	7/7	ENST00000333244.6
AHNAK2	NM_001350929.2 linkuse as main transcript	c.16559A>C	p.Gln5520Pro	missense_variant	7/7
AHNAK2	XM_024449463.2 linkuse as main transcript	c.16559A>C	p.Gln5520Pro	missense_variant	7/7
AHNAK2	XM_047430904.1 linkuse as main transcript	c.16559A>C	p.Gln5520Pro	missense_variant	7/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AHNAK2	ENST00000333244.6 linkuse as main transcript	c.16859A>C	p.Gln5620Pro	missense_variant	7/7	5	NM_138420.4	P1	Q8IVF2-1
AHNAK2	ENST00000557457.1 linkuse as main transcript	c.1853A>C	p.Gln618Pro	missense_variant	3/3	1			Q8IVF2-2
AHNAK2	ENST00000555122.1 linkuse as main transcript	n.16987A>C		non_coding_transcript_exon_variant	6/6	5

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152230

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000283

AC:

AN:

247656

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134574

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000291

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:

0.0000535

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000246

AC:

AN:

1460970

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

726728

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000261

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74372

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000228

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

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

Aug 17, 2022

The c.16859A>C (p.Q5620P) alteration is located in exon 7 (coding exon 7) of the AHNAK2 gene. This alteration results from a A to C substitution at nucleotide position 16859, causing the glutamine (Q) at amino acid position 5620 to be replaced by a proline (P). 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

0.10

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.012

DANN

Benign

0.94

DEOGEN2

Benign

0.018

.;T

Eigen

Benign

-1.8

Eigen_PC

Benign

-1.9

FATHMM_MKL

Benign

0.084

LIST_S2

Benign

0.32

T;T

M_CAP

Benign

0.0044

MetaRNN

Benign

0.052

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.2

.;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.19

PROVEAN

Uncertain

-3.0

D;N

REVEL

Benign

0.067

Sift

Benign

0.22

T;T

Sift4G

Benign

0.27

T;D

Polyphen

0.0060

.;B

Vest4

0.11

MutPred

0.18

.;Gain of catalytic residue at P5615 (P = 4e-04);

MVP

0.014

ClinPred

0.079

GERP RS

-11

Varity_R

0.088

gMVP

0.021

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