rs864622269

Variant summary

Our verdict is Pathogenic. Variant got 17 ACMG points: 17P and 0B. PM2PM5PP2PP3_StrongPP5_Very_Strong

The NM_015915.5(ATL1):c.1483C>T(p.Arg495Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,976 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R495Q) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ATL1
NM_015915.5 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:10U:1

Conservation

PhyloP100: 3.27

Variant links:

Genes affected

ATL1 (HGNC:11231): (atlastin GTPase 1) The protein encoded by this gene is a GTPase and a Golgi body transmembrane protein. The encoded protein can form a homotetramer and has been shown to interact with spastin and with mitogen-activated protein kinase kinase kinase kinase 4. This protein may be involved in axonal maintenance as evidenced by the fact that defects in this gene are a cause of spastic paraplegia type 3. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ATL1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 17 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr14-50628395-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2179806.Status of the report is criteria_provided_single_submitter, 1 stars.

PP2

Missense variant where missense usually causes diseases, ATL1

PP3

MetaRNN computational evidence supports a deleterious effect, 0.95

PP5

Variant 14-50628394-C-T is Pathogenic according to our data. Variant chr14-50628394-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 219827.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-50628394-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
ATL1	NM_015915.5 linkuse as main transcript	c.1483C>T	p.Arg495Trp	missense_variant	12/14	ENST00000358385.12
ATL1	NM_001127713.1 linkuse as main transcript	c.1483C>T	p.Arg495Trp	missense_variant	13/14
ATL1	NM_181598.4 linkuse as main transcript	c.1483C>T	p.Arg495Trp	missense_variant	12/13
ATL1	XM_047431430.1 linkuse as main transcript	c.1483C>T	p.Arg495Trp	missense_variant	13/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATL1	ENST00000358385.12 linkuse as main transcript	c.1483C>T	p.Arg495Trp	missense_variant	12/14	1	NM_015915.5	P3	Q8WXF7-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251348

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135836

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152092

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74284

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:10Uncertain:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 3A

Pathogenic:5Uncertain:1

Uncertain significance, no assertion criteria provided	literature only	Inherited Neuropathy Consortium Ii, University Of Miami	Jan 06, 2016	- -
Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Aug 02, 2023	For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects ATL1 function (PMID: 17321752, 20816793, 23079343). 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 expected to disrupt ATL1 protein function. ClinVar contains an entry for this variant (Variation ID: 219827). This missense change has been observed in individuals with autosomal dominant hereditary spastic paraplegia (PMID: 15596607, 15742100, 17502470, 20718791, 20932283). It has also been observed to segregate with disease in related individuals. This variant is present in population databases (no rsID available, gnomAD 0.004%). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 495 of the ATL1 protein (p.Arg495Trp). -
Pathogenic, criteria provided, single submitter	clinical testing	Laboratory of Medical Genetics, National & Kapodistrian University of Athens	Sep 14, 2021	PM1, PM2, PP2, PP3, PP5 -
Pathogenic, criteria provided, single submitter	clinical testing	Paris Brain Institute, Inserm - ICM	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Centogene AG - the Rare Disease Company	May 15, 2019	- -
Pathogenic, criteria provided, single submitter	research	Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL)	Apr 27, 2023	- -

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jun 23, 2023	Published functional studies suggest a dominant-negative effect on the BMPRII signaling pathway (Zhao et al., 2013); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26208798, 20816793, 23079343, 22266886, 20932283, 16815977, 17321752, 15596607, 26374131, 26671083, 20718791, 24451228, 17502470, 15742100, 31236401, 30780198, 35925862, 31920481, 32322428, 23400676, 35788923, 34788679, 23334294, 36359747) -
Pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Feb 01, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jul 15, 2020	The frequency of this variant in the general population is consistent with pathogenicity. Found in at least one patient with expected phenotype for this gene. Predicted to have a damaging effect on the protein. Found in multiple unrelated patients with expected phenotype for this gene. Assessment of experimental evidence regarding the effect of this variant on protein function is inconclusive. Statistically associated with disease in multiple families. -

Inborn genetic diseases

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 15, 2016

- -

Hereditary spastic paraplegia

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Jul 01, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.42

Cadd

Pathogenic

Dann

Pathogenic

1.0

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.13

MetaRNN

Pathogenic

0.95

D;D

MetaSVM

Pathogenic

0.83

MutationAssessor

Uncertain

2.6

M;M

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-7.3

D;D

REVEL

Pathogenic

0.86

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.90

MutPred

0.85

Gain of helix (P = 0.132);Gain of helix (P = 0.132);

MVP

1.0

MPC

1.7

ClinPred

1.0

GERP RS

4.7

Varity_R

0.84

gMVP

0.94

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over