Genetic Variant AKAP3:p.Glu727Lys (chr12-4626723-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_001278309.2(AKAP3):c.2179G>A(p.Glu727Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000421 in 1,614,096 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 0.00028 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

AKAP3
NM_001278309.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.37

Variant links:

Genes affected

AKAP3 (HGNC:373): (A-kinase anchoring protein 3) This gene encodes a member of A-kinase anchoring proteins (AKAPs), a family of functionally related proteins that target protein kinase A to discrete locations within the cell. The encoded protein is reported to participate in protein-protein interactions with the R-subunit of the protein kinase A as well as sperm-associated proteins. This protein is expressed in spermatozoa and localized to the acrosomal region of the sperm head as well as the length of the principal piece. It may function as a regulator of motility, capacitation, and the acrosome reaction. [provided by RefSeq, May 2013]

AKAP3 links:

ENSG00000272921 (HGNC:):

ENSG00000272921 links:

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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=0.2681786).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AKAP3	NM_001278309.2 link	c.2179G>A	p.Glu727Lys	missense_variant	Exon 5 of 6	ENST00000228850.6	NP_001265238.2	O75969V9HWD4
AKAP3	NM_006422.4 link	c.2179G>A	p.Glu727Lys	missense_variant	Exon 5 of 6		NP_006413.4	O75969V9HWD4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AKAP3	ENST00000228850.6 link	c.2179G>A	p.Glu727Lys	missense_variant	Exon 5 of 6	5	NM_001278309.2	ENSP00000228850.1	O75969
ENSG00000272921	ENST00000536588.1 link	n.142-4599C>T		intron_variant	Intron 1 of 6	3		ENSP00000445121.1	H0YGX0
AKAP3	ENST00000545990.6 link	c.2179G>A	p.Glu727Lys	missense_variant	Exon 5 of 6	2		ENSP00000440994.1	O75969

Frequencies

GnomAD3 genomes

AF:

0.000276

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00101

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:

0.0000439

AC:

AN:

250794

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135520

show subpopulations

Gnomad AFR exome

AF:

0.000677

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1461836

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727214

show subpopulations

Gnomad4 AFR exome

AF:

0.000747

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000276

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00101

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:

0.000257

Hom.:

Bravo

AF:

0.000257

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000494

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

Jan 16, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2179G>A (p.E727K) alteration is located in exon 4 (coding exon 2) of the AKAP3 gene. This alteration results from a G to A substitution at nucleotide position 2179, causing the glutamic acid (E) at amino acid position 727 to be replaced by a lysine (K). 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

0.19

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Uncertain

-0.030

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.019

T;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.87

.;D

M_CAP

Benign

0.0043

MetaRNN

Benign

0.27

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.7

M;M

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.70

N;N

REVEL

Benign

0.24

Sift

Benign

0.043

D;D

Sift4G

Uncertain

0.040

D;D

Polyphen

1.0

D;D

Vest4

0.52

MVP

0.59

MPC

0.58

ClinPred

0.15

GERP RS

4.9

Varity_R

0.15

gMVP

0.45

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