Genetic Variant NM_017747.3:c.2030A>G (chr5-140485620-A-G) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_017747.3(ANKHD1):c.2030A>G(p.Lys677Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000404 in 1,461,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

ANKHD1
NM_017747.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.25

Variant links:

Genes affected

ANKHD1 (HGNC:24714): (ankyrin repeat and KH domain containing 1) This gene encodes a protein with multiple ankyrin repeat domains and a single KH-domain. The protein is thought to function as a scaffolding protein, and it may be involved in the regulation of caspases and thereby play an antiapoptotic role in cell survival. Alternative splicing results in multiple transcript variants, one of which generates a fusion transcript (MASK-BP3) with the downstream eIF4E-binding protein 3 (EIF4EBP3) gene, resulting in a protein comprised of the ANKHD1 sequence for the majority of the protein and a different C-terminus due to an alternate reading frame for the EIF4EBP3 segments. [provided by RefSeq, Sep 2010]

ANKHD1 links:

ANKHD1-EIF4EBP3 (HGNC:33530): (ANKHD1-EIF4EBP3 readthrough) The ANKHD1-EIF4EBP3 mRNA is an infrequent but naturally occurring readthrough transcript of the neighboring ANKHD1 and EIF4EBP3 genes. This readthrough transcript encodes a protein composed mostly of the multiple ankyrin repeats, single KH-domain protein, with its C-terminus encoded in a different reading frame from the shared portion of the EIF4EBP3 gene. The significance of this readthrough mRNA and the function of its protein product have not yet been determined. [provided by RefSeq, Nov 2009]

ANKHD1-EIF4EBP3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.15985796).

BS2

High AC in GnomAdExome4 at 59 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANKHD1	NM_017747.3 link	c.2030A>G	p.Lys677Arg	missense_variant	Exon 13 of 34	ENST00000360839.7	NP_060217.1	Q8IWZ3-1
ANKHD1-EIF4EBP3	NM_020690.6 link	c.2030A>G	p.Lys677Arg	missense_variant	Exon 13 of 36		NP_065741.3	Q8IWZ3-6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANKHD1	ENST00000360839.7 link	c.2030A>G	p.Lys677Arg	missense_variant	Exon 13 of 34	1	NM_017747.3	ENSP00000354085.2		Q8IWZ3-1
ANKHD1-EIF4EBP3	ENST00000532219.5 link	c.2030A>G	p.Lys677Arg	missense_variant	Exon 13 of 36	2		ENSP00000432016.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.000109

AC:

AN:

248838

Hom.:

AF XY:

0.0000817

AC XY:

AN XY:

134714

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000637

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:

0.0000450

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000404

AC:

AN:

1461760

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000559

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000906

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2030A>G (p.K677R) alteration is located in exon 13 (coding exon 13) of the ANKHD1 gene. This alteration results from a A to G substitution at nucleotide position 2030, causing the lysine (K) at amino acid position 677 to be replaced by an arginine (R). 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

Pathogenic

0.85

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

T;T;T;.

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.97

D;D;D;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

-0.010

N;.;.;.

PrimateAI

Uncertain

0.78

PROVEAN

Uncertain

-2.9

D;D;N;D

REVEL

Uncertain

0.41

Sift

Benign

0.15

T;T;T;T

Sift4G

Benign

0.13

T;T;T;T

Polyphen

1.0

D;D;.;.

Vest4

0.56

MutPred

0.40

Loss of ubiquitination at K677 (P = 0.0199);.;.;Loss of ubiquitination at K677 (P = 0.0199);

MVP

0.60

MPC

0.52

ClinPred

0.19

GERP RS

5.4

Varity_R

0.29

gMVP

0.33

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

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