11-63636332-T-C

Position:

• chr11-63636332-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_015459.5(ATL3):​c.853A>G​(p.Ile285Val) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,792 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ATL3 NM_015459.5 missense, splice_region
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.04

Genes affected

ATL3 (HGNC:24526): (atlastin GTPase 3) This gene encodes a member of a family of dynamin-like, integral membrane GTPases. The encoded protein is required for the proper formation of the network of interconnected tubules of the endoplasmic reticulum. Mutations in this gene may be associated with hereditary sensory neuropathy type IF. Alternatively spliced transcript variants that encode distinct isoforms have been described. [provided by RefSeq, Feb 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3800673).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATL3	NM_015459.5	c.853A>G	p.Ile285Val	missense_variant, splice_region_variant	9/13	ENST00000398868.8	NP_056274.3
ATL3	NM_001290048.2	c.799A>G	p.Ile267Val	missense_variant, splice_region_variant	9/13		NP_001276977.1
ATL3	XM_047426725.1	c.1009A>G	p.Ile337Val	missense_variant, splice_region_variant	10/14		XP_047282681.1
ATL3	XM_006718493.2	c.796A>G	p.Ile266Val	missense_variant, splice_region_variant	8/12		XP_006718556.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATL3	ENST00000398868.8	c.853A>G	p.Ile285Val	missense_variant, splice_region_variant	9/13	1	NM_015459.5	ENSP00000381844
ATL3	ENST00000538786.1	c.799A>G	p.Ile267Val	missense_variant, splice_region_variant	9/13	2		ENSP00000437593	P1

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461792 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727196

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neuropathy, hereditary sensory, type 1F Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 04, 2020

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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The valine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with ATL3-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces isoleucine with valine at codon 285 of the ATL3 protein (p.Ile285Val). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and valine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.066	T
BayesDel_noAF	Benign	-0.14
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	T;.
Eigen	Uncertain	0.31
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.90	D;D
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.38	T;T
MetaSVM	Uncertain	0.45	D
MutationAssessor	Benign	1.8	L;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.80	N;N
REVEL	Uncertain	0.56
Sift	Benign	0.032	D;D
Sift4G	Uncertain	0.055	T;T
Polyphen		0.76	P;.
Vest4		0.28
MutPred		0.69		Loss of ubiquitination at K290 (P = 0.1372);.;
MVP		0.91
MPC		0.25
ClinPred		0.75	D
GERP RS		4.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.17
gMVP		0.20

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

LitVar

Other links and lift over

dbSNP: rs1031320296; hg19: chr11-63403804;