Genetic Variant NM_015368.4:c.68C>A (chr11-94129380-C-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_015368.4(PANX1):c.68C>A(p.Pro23His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,638 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. P23R) 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: 2.88

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 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.095822096).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PANX1	NM_015368.4 link	c.68C>A	p.Pro23His	missense_variant	Exon 1 of 5	ENST00000227638.8	NP_056183.2	Q96RD7-1A0A024R397

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PANX1	ENST00000227638.8 link	c.68C>A	p.Pro23His	missense_variant	Exon 1 of 5	1	NM_015368.4	ENSP00000227638.3		Q96RD7-1
PANX1	ENST00000436171.2 link	c.68C>A	p.Pro23His	missense_variant	Exon 1 of 5	1		ENSP00000411461.2		Q96RD7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461638

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727138

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:

33474

American (AMR)

AF:

0.00

AC:

AN:

44690

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

86210

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111890

Other (OTH)

AF:

0.00

AC:

AN:

60384

⚠️ 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

Benign

0.16

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.069

T;.

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.23

FATHMM_MKL

Benign

0.41

LIST_S2

Benign

0.70

T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.096

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.60

N;N

PhyloP100

2.9

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.053

Sift

Benign

0.069

T;T

Sift4G

Uncertain

0.040

D;D

Polyphen

0.45

P;P

Vest4

0.18

MutPred

0.23

Loss of catalytic residue at P23 (P = 0.0057);Loss of catalytic residue at P23 (P = 0.0057);

MVP

0.35

MPC

0.29

ClinPred

0.86

GERP RS

3.2

PromoterAI

-0.0025

Neutral

(source)

Varity_R

0.29

gMVP

0.50

Mutation Taster

=56/44

polymorphism

(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.68C>A

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