chr11-22279721-A-G

Position:

• chr11-22279721-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_213599.3(ANO5):​c.2698A>G​(p.Met900Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. 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. M900L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ANO5 NM_213599.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.480

Genes affected

ANO5 (HGNC:27337): (anoctamin 5) This gene encodes a member of the anoctamin family of transmembrane proteins. The encoded protein is likely a calcium activated chloride channel. Mutations in this gene have been associated with gnathodiaphyseal dysplasia. Alternatively spliced transcript variants have been described. [provided by RefSeq, Nov 2009]

ANO5 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.054890573).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ANO5	NM_213599.3	c.2698A>G	p.Met900Val	missense_variant	22/22	ENST00000324559.9	NP_998764.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ANO5	ENST00000324559.9	c.2698A>G	p.Met900Val	missense_variant	22/22	1	NM_213599.3	ENSP00000315371.9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Gnathodiaphyseal dysplasia;C1969785:Autosomal recessive limb-girdle muscular dystrophy type 2L Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 09, 2021

This sequence change replaces methionine with valine at codon 900 of the ANO5 protein (p.Met900Val). The methionine residue is weakly conserved and there is a small physicochemical difference between methionine and valine. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ANO5 protein function. This variant has not been reported in the literature in individuals affected with ANO5-related conditions. This variant is not present in population databases (ExAC no frequency). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.077
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	0.21
DANN	Benign	0.84
DEOGEN2	Benign	0.046	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.046	N
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.025	D
MetaRNN	Benign	0.055	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.81	L
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.59	N
REVEL	Benign	0.083
Sift	Benign	0.79	T
Sift4G	Benign	0.93	T
Polyphen		0.0010	B
Vest4		0.075
MutPred		0.35		Loss of catalytic residue at M900 (P = 0.0055);
MVP		0.36
MPC		0.087
ClinPred		0.022	T
GERP RS		-3.9
Varity_R		0.055
gMVP		0.36

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-22301267; COSMIC: COSV61087802; COSMIC: COSV61087802;