rs864622133

Positions:

• chr7-92083584-G-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4 BS2

The NM_005751.5(AKAP9):​c.8575G>T​(p.Val2859Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000413 in 1,451,036 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: AKAP9 NM_005751.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.93

Genes affected

AKAP9 (HGNC:379): (A-kinase anchoring protein 9) 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. Alternate splicing of this gene results in at least two isoforms that localize to the centrosome and the Golgi apparatus, and interact with numerous signaling proteins from multiple signal transduction pathways. These signaling proteins include type II protein kinase A, serine/threonine kinase protein kinase N, protein phosphatase 1, protein phosphatase 2a, protein kinase C-epsilon and phosphodiesterase 4D3. [provided by RefSeq, Aug 2008]

AKAP9 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.28932053).
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AKAP9	NM_005751.5	c.8575G>T	p.Val2859Phe	missense_variant	33/50	ENST00000356239.8	NP_005742.4
AKAP9	NM_147185.3	c.8551G>T	p.Val2851Phe	missense_variant	33/50		NP_671714.1
AKAP9	NM_001379277.1	c.3220G>T	p.Val1074Phe	missense_variant	12/29		NP_001366206.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AKAP9	ENST00000356239.8	c.8575G>T	p.Val2859Phe	missense_variant	33/50	1	NM_005751.5	ENSP00000348573.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000413 AC: 6 AN: 1451036 Hom.: 0 Cov.: 34 AF XY: 0.00000139 AC XY: 1 AN XY: 721474

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: 0.00000541

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

Long QT syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 16, 2015

In summary, this is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. This variant has not been published in the literature and is not present in population databases. This sequence change replaces valine with phenylalanine at codon 2859 of the AKAP9 protein (p.Val2859Phe). The valine residue is highly conserved and there is a small physicochemical difference between valine and phenylalanine. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.030	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	19
DANN	Uncertain	0.98
DEOGEN2	Benign	0.40	.;T;T;.
Eigen	Benign	-0.044
Eigen_PC	Benign	-0.098
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.93	D;D;D;D
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.29	T;T;T;T
MetaSVM	Benign	-0.81	T
PrimateAI	Uncertain	0.50	T
PROVEAN	Uncertain	-2.7	D;.;.;D
REVEL	Benign	0.17
Sift	Uncertain	0.0010	D;.;.;D
Sift4G	Uncertain	0.0040	.;D;.;D
Vest4		0.39
MVP		0.59
MPC		0.27
ClinPred		0.91	D
GERP RS		1.6
Varity_R		0.19
gMVP		0.55

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

Other links and lift over

dbSNP: rs864622133; hg19: chr7-91712898;