14-64468892-G-C

Variant names:

• chr14-64468892-G-C
• rs760825109
• NM_004857.3:c.498G>C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_004857.3(AKAP5):​c.498G>C​(p.Gln166His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,461,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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. Q166P) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: AKAP5 NM_004857.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.568

Genes affected

AKAP5 (HGNC:375): (A-kinase anchoring protein 5) 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. The encoded protein binds to the RII-beta regulatory subunit of PKA, and also to protein kinase C and the phosphatase calcineurin. It is predominantly expressed in cerebral cortex and may anchor the PKA protein at postsynaptic densities (PSD) and be involved in the regulation of postsynaptic events. It is also expressed in T lymphocytes and may function to inhibit interleukin-2 transcription by disrupting calcineurin-dependent dephosphorylation of NFAT. [provided by RefSeq, Jul 2008]

ZBTB25 (HGNC:13112): (zinc finger and BTB domain containing 25) Predicted to enable DNA-binding transcription repressor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.18533826).
• BS2: High AC in GnomAdExome4 at 20 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AKAP5	NM_004857.3	c.498G>C	p.Gln166His	missense_variant	Exon 2 of 2	ENST00000394718.4	NP_004848.3
ZBTB25	NM_001304508.1	c.174-19254C>G		intron_variant	Intron 2 of 2		NP_001291437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AKAP5	ENST00000394718.4	c.498G>C	p.Gln166His	missense_variant	Exon 2 of 2	1	NM_004857.3	ENSP00000378207.3
ZBTB25	ENST00000555220.5	c.174-19254C>G		intron_variant	Intron 2 of 2	1		ENSP00000450718.1
AKAP5	ENST00000320636.5	c.498G>C	p.Gln166His	missense_variant	Exon 1 of 1	6		ENSP00000315615.5
ZBTB25	ENST00000555424.1	c.256+18222C>G		intron_variant	Intron 2 of 2	5		ENSP00000451046.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000159 AC: 4 AN: 251172 Hom.: 0 AF XY: 0.0000221 AC XY: 3 AN XY: 135834

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: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 20 AN: 1461860 Hom.: 0 Cov.: 32 AF XY: 0.0000151 AC XY: 11 AN XY: 727224

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: 0.0000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000113

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 12, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.498G>C (p.Q166H) alteration is located in exon 2 (coding exon 1) of the AKAP5 gene. This alteration results from a G to C substitution at nucleotide position 498, causing the glutamine (Q) at amino acid position 166 to be replaced by a histidine (H). 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	0.16
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	6.2
DANN	Benign	0.93
DEOGEN2	Uncertain	0.62	D;D
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.53
FATHMM_MKL	Benign	0.071	N
LIST_S2	Benign	0.33	.;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.19	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.7	L;L
PrimateAI	Benign	0.21	T
PROVEAN	Uncertain	-4.2	D;D
REVEL	Benign	0.075
Sift	Benign	0.040	D;D
Sift4G	Benign	0.13	T;T
Polyphen		0.96	P;P
Vest4		0.071
MutPred		0.14		Gain of catalytic residue at T165 (P = 0.1125);Gain of catalytic residue at T165 (P = 0.1125);
MVP		0.17
MPC		0.33
ClinPred		0.27	T
GERP RS		1.1
Varity_R		0.18
gMVP		0.079

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: rs760825109; hg19: chr14-64935610;