Genetic Variant NM_015368.4:c.191T>G (chr11-94153500-T-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_015368.4(PANX1):c.191T>G(p.Ile64Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. I64V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PANX1
NM_015368.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.73

Publications

0 publications found

Variant links:

Genes affected

PANX1 (HGNC:8599): (pannexin 1) 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 2 are abundantly expressed in central nerve system (CNS) and are coexpressed in various neuronal populations. Studies in Xenopus oocytes suggest that this protein alone and in combination with pannexin 2 may form cell type-specific gap junctions with distinct properties. [provided by RefSeq, Jul 2008]

PANX1 Gene-Disease associations (from GenCC):

oocyte maturation defect 7
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

PANX1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.916

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PANX1	NM_015368.4 link	c.191T>G	p.Ile64Arg	missense_variant	Exon 2 of 5	ENST00000227638.8	NP_056183.2	Q96RD7-1A0A024R397
PANX1	XM_011542734.3 link	c.-482T>G		upstream_gene_variant			XP_011541036.1
PANX1	XM_047426702.1 link	c.-378T>G		upstream_gene_variant			XP_047282658.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PANX1	ENST00000227638.8 link	c.191T>G	p.Ile64Arg	missense_variant	Exon 2 of 5	1	NM_015368.4	ENSP00000227638.3		Q96RD7-1
PANX1	ENST00000436171.2 link	c.191T>G	p.Ile64Arg	missense_variant	Exon 2 of 5	1		ENSP00000411461.2		Q96RD7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461870

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727232

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.19

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.46

T;.

Eigen

Pathogenic

0.69

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.92

D;D

M_CAP

Uncertain

0.086

MetaRNN

Pathogenic

0.92

D;D

MetaSVM

Benign

-0.35

MutationAssessor

Uncertain

2.8

M;M

PhyloP100

6.7

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-5.2

D;D

REVEL

Uncertain

0.58

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

0.99

D;D

Vest4

0.92

MutPred

0.78

Gain of disorder (P = 0.0131);Gain of disorder (P = 0.0131);

MVP

0.82

MPC

0.61

ClinPred

1.0

GERP RS

4.5

Varity_R

0.93

gMVP

0.96

Mutation Taster

=10/90

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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NM_015368.4:c.191T>G

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