Genetic Variant ANO4:p.Glu136Gly (chr12-100942486-A-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP2

The NM_001286615.2(ANO4):c.407A>G(p.Glu136Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,784 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ANO4
NM_001286615.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.52

Publications

0 publications found

Variant links:

Genes affected

ANO4 (HGNC:23837): (anoctamin 4) Enables intracellular calcium activated chloride channel activity. Involved in chloride transport. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ANO4 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

ANO4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 7 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 2.5332 (below the threshold of 3.09). Trascript score misZ: 3.1552 (above the threshold of 3.09). GenCC associations: The gene is linked to complex neurodevelopmental disorder.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANO4	NM_001286615.2 link	c.407A>G	p.Glu136Gly	missense_variant	Exon 5 of 28	ENST00000392977.8	NP_001273544.1	Q32M45-1B7Z9Z0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ANO4	ENST00000392977.8 link	c.407A>G	p.Glu136Gly	missense_variant	Exon 5 of 28	2	NM_001286615.2	ENSP00000376703.3	Q32M45-1
ANO4	ENST00000644049.1 link	c.905A>G	p.Glu302Gly	missense_variant	Exon 7 of 30			ENSP00000494481.1	A0A2R8Y532
ANO4	ENST00000392979.7 link	c.302A>G	p.Glu101Gly	missense_variant	Exon 4 of 27	2		ENSP00000376705.3	Q32M45-2
ANO4	ENST00000549155.6 link	n.905A>G		non_coding_transcript_exon_variant	Exon 7 of 11	2		ENSP00000449116.2	F8VW62

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461784

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727198

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111962

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 04, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.302A>G (p.E101G) alteration is located in exon 4 (coding exon 3) of the ANO4 gene. This alteration results from a A to G substitution at nucleotide position 302, causing the glutamic acid (E) at amino acid position 101 to be replaced by a glycine (G). 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

Benign

0.26

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.17

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.34

.;.;T

Eigen

Uncertain

0.27

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Benign

0.032

MetaRNN

Uncertain

0.62

D;D;D

MetaSVM

Benign

-0.57

MutationAssessor

Benign

1.6

.;.;L

PhyloP100

6.5

PrimateAI

Uncertain

0.68

PROVEAN

Uncertain

-2.6

.;D;D

REVEL

Uncertain

0.39

Sift

Benign

0.051

.;T;D

Sift4G

Uncertain

0.059

.;T;D

Polyphen

0.33, 0.35

.;B;B

Vest4

0.74, 0.79

MutPred

0.33

.;.;Loss of stability (P = 0.0188);

MVP

0.20

MPC

0.75

ClinPred

0.95

GERP RS

5.6

Varity_R

0.19

gMVP

0.57

Mutation Taster

=23/77

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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12-100942486-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over