NM_015915.5:c.470T>C

Variant names:

• chr14-50591587-T-C
• rs119476051
• NM_015915.5:c.470T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1 PM2 PM5 PP2 PP5_Moderate

The NM_015915.5(ATL1):​c.470T>C​(p.Leu157Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L157W) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATL1 NM_015915.5 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.94
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• hereditary spastic paraplegia 3A

  Inheritance: AD, SD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• neuropathy, hereditary sensory, type 1D

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
• hereditary sensory and autonomic neuropathy type 1

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PM1: In a hotspot region, there are 8 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 5 uncertain in NM_015915.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-50591587-T-G is described in ClinVar as Pathogenic. ClinVar VariationId is 4353.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP2: Missense variant in the ATL1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 60 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 2.6313 (below the threshold of 3.09). Trascript score misZ: 3.8383 (above the threshold of 3.09). GenCC associations: The gene is linked to hereditary spastic paraplegia 3A, neuropathy, hereditary sensory, type 1D, hereditary sensory and autonomic neuropathy type 1.
• PP5: Variant 14-50591587-T-C is Pathogenic according to our data. Variant chr14-50591587-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 989013.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015915.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATL1	NM_015915.5	MANE Select	c.470T>C	p.Leu157Ser	missense	Exon 4 of 14	NP_056999.2
	ATL1	NM_001127713.1		c.470T>C	p.Leu157Ser	missense	Exon 5 of 14	NP_001121185.1
	ATL1	NM_181598.4		c.470T>C	p.Leu157Ser	missense	Exon 4 of 13	NP_853629.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATL1	ENST00000358385.12	TSL:1 MANE Select	c.470T>C	p.Leu157Ser	missense	Exon 4 of 14	ENSP00000351155.7
	ATL1	ENST00000441560.6	TSL:1	c.470T>C	p.Leu157Ser	missense	Exon 5 of 14	ENSP00000413675.2
	ATL1	ENST00000682037.1		c.470T>C	p.Leu157Ser	missense	Exon 4 of 14	ENSP00000508289.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary spastic paraplegia 3A Pathogenic:1

Paris Brain Institute, Inserm - ICM

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.55	D
Eigen	Benign	0.13
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.036	D
MetaRNN	Uncertain	0.54	D
MetaSVM	Benign	-0.90	T
MutationAssessor	Benign	1.2	L
PhyloP100		7.9
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-3.1	D
REVEL	Uncertain	0.38
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.44	B
Vest4		0.53
MutPred		0.41		Gain of disorder (P = 0.0083)
MVP		0.64
MPC		0.97
ClinPred		0.98	D
GERP RS		5.5
Varity_R		0.89
gMVP		0.78
Mutation Taster		=0/100	disease causing

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

Other links and lift over

dbSNP: rs119476051; hg19: chr14-51058305;