Genetic Variant ANKRD31:p.Glu1778Lys (chr5-75091401-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001372053.1(ANKRD31):c.5332G>A(p.Glu1778Lys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000263 in 1,520,180 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 7.3e-7 ( 0 hom. )

Consequence

ANKRD31
NM_001372053.1 missense, splice_region

Scores

Splicing: ADA: 0.9874

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.55

Variant links:

Genes affected

ANKRD31 (HGNC:26853): (ankyrin repeat domain 31) This gene encodes a protein containing multiple ankyrin repeats. Ankyrin domains function in protein-protein interactions in a variety of cellular processes. Mutations in this gene are associated with a Rett syndrome (RTT)-like phenotype. [provided by RefSeq, Apr 2017]

ANKRD31 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANKRD31	NM_001372053.1 link	c.5332G>A	p.Glu1778Lys	missense_variant, splice_region_variant	Exon 23 of 26	ENST00000506364.6	NP_001358982.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANKRD31	ENST00000506364.6 link	c.5332G>A	p.Glu1778Lys	missense_variant, splice_region_variant	Exon 23 of 26	5	NM_001372053.1	ENSP00000427262.2		D6RJB7

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151988

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00000793

AC:

AN:

126098

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67582

show subpopulations

Gnomad AFR exome

AF:

0.000136

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:

7.31e-7

AC:

AN:

1368192

Hom.:

Cov.:

AF XY:

0.00000148

AC XY:

AN XY:

674562

show subpopulations

Gnomad4 AFR exome

AF:

0.0000328

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:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

151988

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74234

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.0000655

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

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 24, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.5161G>A (p.E1721K) alteration is located in exon 22 (coding exon 22) of the ANKRD31 gene. This alteration results from a G to A substitution at nucleotide position 5161, causing the glutamic acid (E) at amino acid position 1721 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

-0.20

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.023

.;T

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.86

D;D

M_CAP

Uncertain

0.086

MetaRNN

Benign

0.19

T;T

MetaSVM

Uncertain

-0.27

MutationAssessor

Uncertain

2.0

.;M

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.2

.;N

REVEL

Benign

0.15

Sift

Uncertain

0.0030

.;D

Sift4G

Uncertain

0.019

D;D

Vest4

0.43

MutPred

0.42

.;Loss of ubiquitination at K1725 (P = 0.0246);

MVP

0.40

ClinPred

0.61

GERP RS

4.4

Varity_R

0.22

gMVP

0.21

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Pathogenic

0.73

SpliceAI score (max)

0.42

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.42

Position offset: 0

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