Genetic Variant PIAS2:p.Pro522Ser (chr18-46821017-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 2P and 8B. PM2BP4_StrongBS2

The NM_004671.5(PIAS2):c.1564C>T(p.Pro522Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict 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. P522T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

PIAS2
NM_004671.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.74

Publications

1 publications found

Variant links:

Genes affected

PIAS2 (HGNC:17311): (protein inhibitor of activated STAT 2) This gene encodes a member of the protein inhibitor of activated STAT family, which function as SUMO E3 ligases and play important roles in many cellular processes by mediating the sumoylation of target proteins. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. Isoforms of the encoded protein enhance the sumoylation of specific target proteins including the p53 tumor suppressor protein, c-Jun, and the androgen receptor. A pseudogene of this gene is located on the short arm of chromosome 4. The symbol MIZ1 has also been associated with ZBTB17 which is a different gene located on chromosome 1. [provided by RefSeq, Aug 2017]

PIAS2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.048818022).

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIAS2	NM_004671.5 link	c.1564C>T	p.Pro522Ser	missense_variant	Exon 12 of 14	ENST00000585916.6	NP_004662.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIAS2	ENST00000585916.6 link	c.1564C>T	p.Pro522Ser	missense_variant	Exon 12 of 14	1	NM_004671.5	ENSP00000465676.1		O75928-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000796

AC:

AN:

251192

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000342

AC:

AN:

1461082

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726860

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33432

American (AMR)

AF:

0.00

AC:

AN:

44670

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86226

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111410

Other (OTH)

AF:

0.00

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

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

0.063

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.67

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.056

T;.;.

Eigen

Benign

-0.33

Eigen_PC

Benign

-0.096

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Benign

0.0037

MetaRNN

Benign

0.049

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.095

N;N;.

PhyloP100

1.7

PrimateAI

Uncertain

0.51

PROVEAN

Benign

0.88

.;N;N

REVEL

Benign

0.079

Sift

Benign

0.31

.;T;T

Sift4G

Benign

0.52

T;T;T

Polyphen

0.0010

B;B;B

Vest4

0.16

MutPred

0.18

Gain of glycosylation at P522 (P = 0.0078);Gain of glycosylation at P522 (P = 0.0078);.;

MVP

0.27

MPC

0.47

ClinPred

0.19

GERP RS

4.1

Varity_R

0.036

gMVP

0.37

Mutation Taster

=47/53

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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