chr15-85639408-G-A

Position:

• chr15-85639408-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_007200.5(AKAP13):​c.4196G>A​(p.Cys1399Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,692 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: AKAP13 NM_007200.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.73

Genes affected

AKAP13 (HGNC:371): (A-kinase anchoring protein 13) The A-kinase anchor proteins (AKAPs) are a group of structurally diverse proteins which have the common function of binding to the regulatory subunit of protein kinase A (PKA) and confining the holoenzyme to discrete locations within the cell. This gene encodes a member of the AKAP family. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms containing c-terminal dbl oncogene homology (DH) and pleckstrin homology (PH) domains. The DH domain is associated with guanine nucleotide exchange activation for the Rho/Rac family of small GTP binding proteins, resulting in the conversion of the inactive GTPase to the active form capable of transducing signals. The PH domain has multiple functions. Therefore, these isoforms function as scaffolding proteins to coordinate a Rho signaling pathway, function as protein kinase A-anchoring proteins and, in addition, enhance ligand-dependent activity of estrogen receptors alpha and beta. [provided by RefSeq, Jul 2012]

AKAP13-AS1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AKAP13	NM_007200.5	c.4196G>A	p.Cys1399Tyr	missense_variant	9/37	ENST00000394518.7	NP_009131.2
AKAP13	NM_006738.6	c.4196G>A	p.Cys1399Tyr	missense_variant	9/37		NP_006729.4
AKAP13	NM_001270546.1	c.116G>A	p.Cys39Tyr	missense_variant	2/29		NP_001257475.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AKAP13	ENST00000394518.7	c.4196G>A	p.Cys1399Tyr	missense_variant	9/37	1	NM_007200.5	ENSP00000378026.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460692 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 726692

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 01, 2021

The c.4196G>A (p.C1399Y) alteration is located in exon 9 (coding exon 8) of the AKAP13 gene. This alteration results from a G to A substitution at nucleotide position 4196, causing the cysteine (C) at amino acid position 1399 to be replaced by a tyrosine (Y). 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	0.18
BayesDel_addAF	Benign	-0.0033	T
BayesDel_noAF	Benign	-0.24
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T;T;.;T;.;T;.
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D;D;D;D;D;D
M_CAP	Benign	0.018	T
MetaRNN	Uncertain	0.66	D;D;D;D;D;D;D
MetaSVM	Benign	-0.49	T
MutationAssessor	Benign	1.9	.;L;L;.;.;.;.
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-5.4	D;D;D;.;.;.;.
REVEL	Uncertain	0.31
Sift	Uncertain	0.0010	D;D;D;.;.;.;.
Sift4G	Benign	0.066	T;D;D;D;D;D;D
Polyphen		1.0, 1.0	.;D;D;.;.;.;.
Vest4		0.73, 0.69, 0.81
MutPred		0.58		Loss of disorder (P = 0.1092);Loss of disorder (P = 0.1092);Loss of disorder (P = 0.1092);.;.;.;.;
MVP		0.48
MPC		0.33
ClinPred		0.99	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.80
gMVP		0.43

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-86182639;