1-33092212-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_052998.4(AZIN2):c.442C>T(p.Pro148Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000731 in 1,613,774 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0040 ( 7 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 4 hom. )

Consequence

AZIN2
NM_052998.4 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 2.89

Variant links:

Genes affected

AZIN2 (HGNC:29957): (antizyme inhibitor 2) The protein encoded by this gene belongs to the antizyme inhibitor family, which plays a role in cell growth and proliferation by maintaining polyamine homeostasis within the cell. Antizyme inhibitors are homologs of ornithine decarboxylase (ODC, the key enzyme in polyamine biosynthesis) that have lost the ability to decarboxylase ornithine; however, retain the ability to bind to antizymes. Antizymes negatively regulate intracellular polyamine levels by binding to ODC and targeting it for degradation, as well as by inhibiting polyamine uptake. Antizyme inhibitors function as positive regulators of polyamine levels by sequestering antizymes and neutralizing their effect. This gene encodes antizyme inhibitor 2, the second member of this gene family. Like antizyme inhibitor 1, antizyme inhibitor 2 interacts with all 3 antizymes and stimulates ODC activity and polyamine uptake. However, unlike antizyme inhibitor 1, which is ubiquitously expressed and localized in the nucleus and cytoplasm, antizyme inhibitor 2 is predominantly expressed in the brain and testis and localized in the endoplasmic reticulum-golgi intermediate compartment. Recent studies indicate that antizyme inhibitor 2 is also expressed in specific cell types in ovaries, adrenal glands and pancreas, and in mast cells. The exact function of this gene is not known, however, available data suggest its role in cell growth, spermiogenesis, vesicular trafficking and secretion. Accumulation of antizyme inhibitor 2 has also been observed in brains of patients with Alzheimer's disease. There has been confusion in literature and databases over the nomenclature of this gene, stemming from an earlier report that a human cDNA clone (identical to ODCp/AZIN2) had arginine decarboxylase (ADC) activity (PMID:14738999). Subsequent studies in human and mouse showed that antizyme inhibitor 2 was devoid of arginine decarboxylase activity (PMID:19956990). Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Sep 2014]

AZIN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006093949).

BP6

Variant 1-33092212-C-T is Benign according to our data. Variant chr1-33092212-C-T is described in ClinVar as [Benign]. Clinvar id is 791788.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Homozygotes in GnomAd4 at 7 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AZIN2	NM_052998.4 link	c.442C>T	p.Pro148Ser	missense_variant	Exon 6 of 12	ENST00000294517.11	NP_443724.1	Q96A70-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AZIN2	ENST00000294517.11 link	c.442C>T	p.Pro148Ser	missense_variant	Exon 6 of 12	1	NM_052998.4	ENSP00000294517.6		Q96A70-1

Frequencies

GnomAD3 genomes

AF:

0.00400

AC:

608

AN:

152072

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0141

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

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:

0.000958

GnomAD3 exomes

AF:

0.00105

AC:

264

AN:

250940

Hom.:

AF XY:

0.000744

AC XY:

101

AN XY:

135696

show subpopulations

Gnomad AFR exome

AF:

0.0148

Gnomad AMR exome

AF:

0.000579

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:

0.0000176

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000391

AC:

571

AN:

1461584

Hom.:

Cov.:

AF XY:

0.000338

AC XY:

246

AN XY:

727102

show subpopulations

Gnomad4 AFR exome

AF:

0.0142

Gnomad4 AMR exome

AF:

0.000626

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.000878

GnomAD4 genome

AF:

0.00400

AC:

609

AN:

152190

Hom.:

Cov.:

AF XY:

0.00386

AC XY:

287

AN XY:

74400

show subpopulations

Gnomad4 AFR

AF:

0.0141

Gnomad4 AMR

AF:

0.00131

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:

0.000948

Alfa

AF:

0.000741

Hom.:

Bravo

AF:

0.00446

ESP6500AA

AF:

0.0104

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00131

AC:

159

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Dec 28, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.50

D;D;.

Eigen

Benign

0.15

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.74

.;T;T

MetaRNN

Benign

0.0061

T;T;T

MetaSVM

Benign

-0.75

PrimateAI

Benign

0.34

PROVEAN

Pathogenic

-6.5

D;D;D

REVEL

Benign

0.25

Sift

Uncertain

0.017

D;D;D

Sift4G

Uncertain

0.030

D;D;D

Polyphen

0.24

B;B;P

Vest4

0.28

MVP

0.17

MPC

0.19

ClinPred

0.042

GERP RS

4.5

Varity_R

0.45

gMVP

0.53

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