rs144465058

Variant names:

• chr10-60074326-C-A
• rs144465058
• NM_020987.5:c.6555G>T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BS1_Supporting

The NM_020987.5(ANK3):​c.6555G>T​(p.Gln2185His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000444 in 1,613,994 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00035 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00045 (1 hom.)
• Consequence: ANK3 NM_020987.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5 B:1
• Conservation: PhyloP100: 0.160

Genes affected

ANK3 (HGNC:494): (ankyrin 3) Ankyrins are a family of proteins that are believed to link the integral membrane proteins to the underlying spectrin-actin cytoskeleton and play key roles in activities such as cell motility, activation, proliferation, contact, and the maintenance of specialized membrane domains. Multiple isoforms of ankyrin with different affinities for various target proteins are expressed in a tissue-specific, developmentally regulated manner. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin binding domain; and a carboxy-terminal regulatory domain which is the least conserved and subject to variation. Ankyrin 3 is an immunologically distinct gene product from ankyrins 1 and 2, and was originally found at the axonal initial segment and nodes of Ranvier of neurons in the central and peripheral nervous systems. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.021631032).
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000355 (54/152282) while in subpopulation NFE AF= 0.000676 (46/68026). AF 95% confidence interval is 0.000521. There are 0 homozygotes in gnomad4. There are 22 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANK3	NM_020987.5	c.6555G>T	p.Gln2185His	missense_variant	Exon 37 of 44	ENST00000280772.7	NP_066267.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANK3	ENST00000280772.7	c.6555G>T	p.Gln2185His	missense_variant	Exon 37 of 44	1	NM_020987.5	ENSP00000280772.1

Frequencies

GnomAD3 genomes AF: 0.000355 AC: 54 AN: 152164 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000676

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000331 AC: 83 AN: 250628 Hom.: 0 AF XY: 0.000295 AC XY: 40 AN XY: 135394

Gnomad AFR exome AF: 0.000123

Gnomad AMR exome AF: 0.000319

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000131

Gnomad FIN exome AF: 0.000231

Gnomad NFE exome AF: 0.000530

Gnomad OTH exome AF: 0.000164

GnomAD4 exome AF: 0.000453 AC: 662 AN: 1461712 Hom.: 1 Cov.: 36 AF XY: 0.000476 AC XY: 346 AN XY: 727150

Gnomad4 AFR exome AF: 0.0000896

Gnomad4 AMR exome AF: 0.000246

Gnomad4 ASJ exome AF: 0.0000766

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000151

Gnomad4 FIN exome AF: 0.000168

Gnomad4 NFE exome AF: 0.000547

Gnomad4 OTH exome AF: 0.000265

GnomAD4 genome AF: 0.000355 AC: 54 AN: 152282 Hom.: 0 Cov.: 32 AF XY: 0.000295 AC XY: 22 AN XY: 74462

Gnomad4 AFR AF: 0.0000722

Gnomad4 AMR AF: 0.000262

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000942

Gnomad4 NFE AF: 0.000676

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000710 Hom.: 1

Bravo AF: 0.000389

TwinsUK AF: 0.000539 AC: 2

ALSPAC AF: 0.000259 AC: 1

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.000581 AC: 5

ExAC AF: 0.000346 AC: 42

EpiCase AF: 0.000655

EpiControl AF: 0.000296

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Intellectual disability-hypotonia-spasticity-sleep disorder syndrome Uncertain:2

Dec 03, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 25, 2020

New York Genome Center

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Uncertain:1 Benign:1

Aug 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ANK3: BP4 -

Jan 07, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 2185 of the ANK3 protein (p.Gln2185His). This variant is present in population databases (rs144465058, gnomAD 0.06%). This variant has not been reported in the literature in individuals affected with ANK3-related conditions. ClinVar contains an entry for this variant (Variation ID: 210168). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt ANK3 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified Uncertain:1

Feb 16, 2015

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Intellectual disability Uncertain:1

Jan 01, 2019

Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.49	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	12
DANN	Benign	0.95
DEOGEN2	Benign	0.27	T
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.49
FATHMM_MKL	Benign	0.65	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.022	T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	0.34	N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.92	N
REVEL	Benign	0.030
Sift	Uncertain	0.010	D
Polyphen		0.16	B
Vest4		0.12
MutPred		0.12		Gain of glycosylation at T2186 (P = 0.1826);
MVP		0.36
MPC		0.15
ClinPred		0.016	T
GERP RS		2.0
Varity_R		0.086
gMVP		0.28

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: rs144465058; hg19: chr10-61834084;