Genetic Variant NM_052839.4:c.670G>A (chr22-50177382-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_052839.4(PANX2):c.670G>A(p.Ala224Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000618 in 1,457,382 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

PANX2
NM_052839.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.48

Variant links:

Genes affected

PANX2 (HGNC:8600): (pannexin 2) The protein encoded by this gene belongs to the innexin family. Innexin family members are the structural components of gap junctions. This protein and pannexin 1 are abundantly expressed in central nervous system (CNS) and are coexpressed in various neuronal populations. Studies in Xenopus oocytes suggest that this protein alone and in combination with pannexin 1 may form cell type-specific gap junctions with distinct properties. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2009]

PANX2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PANX2	NM_052839.4 link	c.670G>A	p.Ala224Thr	missense_variant	Exon 2 of 3	ENST00000395842.3	NP_443071.2	Q96RD6-3B3KTT7Q495U3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PANX2	ENST00000395842.3 link	c.670G>A	p.Ala224Thr	missense_variant	Exon 2 of 3	2	NM_052839.4	ENSP00000379183.2	Q96RD6-3
PANX2	ENST00000159647.9 link	c.670G>A	p.Ala224Thr	missense_variant	Exon 2 of 4	1		ENSP00000159647.5	Q96RD6-1
PANX2	ENST00000402472.2 link	n.*457G>A		non_coding_transcript_exon_variant	Exon 3 of 5	2		ENSP00000384148.2	F8W8Y4
PANX2	ENST00000402472.2 link	n.*457G>A		3_prime_UTR_variant	Exon 3 of 5	2		ENSP00000384148.2	F8W8Y4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000415

AC:

AN:

240994

Hom.:

AF XY:

0.00000761

AC XY:

AN XY:

131430

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000924

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000618

AC:

AN:

1457382

Hom.:

Cov.:

AF XY:

0.00000828

AC XY:

AN XY:

724732

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00000811

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000827

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 15, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.670G>A (p.A224T) alteration is located in exon 2 (coding exon 2) of the PANX2 gene. This alteration results from a G to A substitution at nucleotide position 670, causing the alanine (A) at amino acid position 224 to be replaced by a threonine (T). 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

0.93

BayesDel_addAF

Uncertain

0.073

BayesDel_noAF

Benign

-0.13

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.030

.;T

Eigen

Pathogenic

0.69

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Benign

0.016

MetaRNN

Uncertain

0.74

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.7

L;L

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.18

Sift

Benign

0.044

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.81

MutPred

0.65

Loss of stability (P = 0.0742);Loss of stability (P = 0.0742);

MVP

0.34

MPC

2.5

ClinPred

0.77

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.29

gMVP

0.78

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