Genetic Variant EXOSC8:p.Ser272Asn (chr13-37009283-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_181503.3(EXOSC8):c.815G>A(p.Ser272Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,443,620 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S272T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

EXOSC8
NM_181503.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.02

Publications

0 publications found

Variant links:

Genes affected

EXOSC8 (HGNC:17035): (exosome component 8) This gene encodes a 3'-5' exoribonuclease that specifically interacts with mRNAs containing AU-rich elements. The encoded protein is part of the exosome complex that is important for the degradation of numerous RNA species. A pseudogene of this gene is found on chromosome 6. [provided by RefSeq, Mar 2009]

EXOSC8 links:

SUPT20H (HGNC:20596): (SPT20 homolog, SAGA complex component) Predicted to enable transcription coregulator activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within positive regulation of gluconeogenesis and positive regulation of transcription by RNA polymerase II. Part of SAGA-type complex. [provided by Alliance of Genome Resources, Apr 2022]

SUPT20H links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25849658).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EXOSC8	NM_181503.3 link	c.815G>A	p.Ser272Asn	missense_variant	Exon 11 of 11	ENST00000389704.4	NP_852480.1	Q96B26
SUPT20H	NM_001014286.3 link	c.*389C>T		downstream_gene_variant		ENST00000350612.11	NP_001014308.2	Q8NEM7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EXOSC8	ENST00000389704.4 link	c.815G>A	p.Ser272Asn	missense_variant	Exon 11 of 11	1	NM_181503.3	ENSP00000374354.3		Q96B26
SUPT20H	ENST00000350612.11 link	c.*389C>T		downstream_gene_variant		1	NM_001014286.3	ENSP00000218894.10		Q8NEM7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.93e-7

AC:

AN:

1443620

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

719168

show subpopulations

African (AFR)

AF:

0.0000302

AC:

AN:

33070

American (AMR)

AF:

0.00

AC:

AN:

44320

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25964

East Asian (EAS)

AF:

0.00

AC:

AN:

39558

South Asian (SAS)

AF:

0.00

AC:

AN:

85604

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53356

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5514

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1096524

Other (OTH)

AF:

0.00

AC:

AN:

59710

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Benign

-0.36

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.035

T;.

Eigen

Uncertain

0.20

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.77

T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.26

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

2.0

M;.

PhyloP100

9.0

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-0.65

N;N

REVEL

Uncertain

0.36

Sift

Benign

0.13

T;D

Sift4G

Benign

0.17

T;D

Polyphen

0.034

B;.

Vest4

0.59

MutPred

0.27

Loss of phosphorylation at S272 (P = 0.0175);.;

MVP

0.52

MPC

0.15

ClinPred

0.68

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.25

gMVP

0.28

Mutation Taster

=43/57

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over