12-100942432-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP2BS1_SupportingBS2

The NM_001286615.2(ANO4):c.353G>A(p.Arg118Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,461,772 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R118L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

ANO4
NM_001286615.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.99

Publications

5 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: Likely_benign. The variant received -4 ACMG points.

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.

BS1

Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.00000479 (7/1461772) while in subpopulation EAS AF = 0.0000756 (3/39672). AF 95% confidence interval is 0.00002. There are 0 homozygotes in GnomAdExome4. There are 6 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANO4	NM_001286615.2 link	c.353G>A	p.Arg118Gln	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.353G>A	p.Arg118Gln	missense_variant	Exon 5 of 28	2	NM_001286615.2	ENSP00000376703.3	Q32M45-1
ANO4	ENST00000644049.1 link	c.851G>A	p.Arg284Gln	missense_variant	Exon 7 of 30			ENSP00000494481.1	A0A2R8Y532
ANO4	ENST00000392979.7 link	c.248G>A	p.Arg83Gln	missense_variant	Exon 4 of 27	2		ENSP00000376705.3	Q32M45-2
ANO4	ENST00000549155.6 link	n.851G>A		non_coding_transcript_exon_variant	Exon 7 of 11	2		ENSP00000449116.2	F8VW62

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000159

AC:

AN:

251010

AF XY:

0.0000295

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461772

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727194

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000447

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39672

South Asian (SAS)

AF:

0.0000232

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:

1111946

Other (OTH)

AF:

0.00

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 16, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.248G>A (p.R83Q) alteration is located in exon 4 (coding exon 3) of the ANO4 gene. This alteration results from a G to A substitution at nucleotide position 248, causing the arginine (R) at amino acid position 83 to be replaced by a glutamine (Q). 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

0.19

BayesDel_addAF

Benign

-0.013

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.12

.;.;T

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.73

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.016

MetaRNN

Uncertain

0.43

T;T;T

MetaSVM

Benign

-0.76

MutationAssessor

Benign

1.4

.;.;L

PhyloP100

7.0

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-1.8

.;N;N

REVEL

Benign

0.19

Sift

Benign

0.19

.;T;T

Sift4G

Benign

0.11

.;T;T

Polyphen

1.0

.;D;D

Vest4

0.59, 0.65

MutPred

0.47

.;.;Loss of MoRF binding (P = 0.0222);

MVP

0.068

MPC

1.5

ClinPred

0.90

GERP RS

5.6

Varity_R

0.23

gMVP

0.43

Mutation Taster

=58/42

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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12-100942432-G-A

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