Genetic Variant ASCC2:p.Glu670Lys (chr22-29792447-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032204.5(ASCC2):c.2008G>A(p.Glu670Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,613,936 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00020 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

ASCC2
NM_032204.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.15

Variant links:

Genes affected

ASCC2 (HGNC:24103): (activating signal cointegrator 1 complex subunit 2) Predicted to enable ubiquitin binding activity. Involved in regulation of transcription, DNA-templated; rescue of stalled ribosome; and ribosome-associated ubiquitin-dependent protein catabolic process. Located in nucleus. Part of activating signal cointegrator 1 complex. [provided by Alliance of Genome Resources, Apr 2022]

ASCC2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.034581274).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASCC2	NM_032204.5 link	c.2008G>A	p.Glu670Lys	missense_variant	Exon 18 of 20	ENST00000307790.8	NP_115580.2	Q9H1I8-1A0A024R1F9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASCC2	ENST00000307790.8 link	c.2008G>A	p.Glu670Lys	missense_variant	Exon 18 of 20	1	NM_032204.5	ENSP00000305502.3		Q9H1I8-1

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000628

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000477

AC:

AN:

251438

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.000738

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:

0.0000205

AC:

AN:

1461650

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.000807

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:

0.00000180

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000204

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.000698

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000164

Hom.:

Bravo

AF:

0.000276

ExAC

AF:

0.0000576

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2008G>A (p.E670K) alteration is located in exon 18 (coding exon 17) of the ASCC2 gene. This alteration results from a G to A substitution at nucleotide position 2008, causing the glutamic acid (E) at amino acid position 670 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

0.080

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.65

CADD

Benign

DANN

Benign

0.70

DEOGEN2

Benign

0.0085

T;.;T

Eigen

Benign

-0.53

Eigen_PC

Benign

-0.45

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.74

.;T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.035

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;.;L

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.63

N;N;N

REVEL

Benign

0.051

Sift

Benign

0.26

T;T;T

Sift4G

Benign

0.40

T;T;T

Polyphen

0.0070

B;.;B

Vest4

0.19

MVP

0.25

MPC

0.37

ClinPred

0.046

GERP RS

4.3

Varity_R

0.12

gMVP

0.087

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