NM_020919.4:c.4964A>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_020919.4(ALS2):c.4964A>C(p.Lys1655Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000911 in 1,613,794 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00043 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

ALS2
NM_020919.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 7.60

Publications

0 publications found

Variant links:

Genes affected

ALS2 (HGNC:443): (alsin Rho guanine nucleotide exchange factor ALS2) The protein encoded by this gene contains an ATS1/RCC1-like domain, a RhoGEF domain, and a vacuolar protein sorting 9 (VPS9) domain, all of which are guanine-nucleotide exchange factors that activate members of the Ras superfamily of GTPases. The protein functions as a guanine nucleotide exchange factor for the small GTPase RAB5. The protein localizes with RAB5 on early endosomal compartments, and functions as a modulator for endosomal dynamics. Mutations in this gene result in several forms of juvenile lateral sclerosis and infantile-onset ascending spastic paralysis. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2008]

ALS2 Gene-Disease associations (from GenCC):

ALS2-related motor neuron disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
amyotrophic lateral sclerosis type 2, juvenile
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
infantile-onset ascending hereditary spastic paralysis
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
juvenile primary lateral sclerosis
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
juvenile amyotrophic lateral sclerosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ALS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.09196958).

BP6

Variant 2-201701861-T-G is Benign according to our data. Variant chr2-201701861-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 446823.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000434 (66/152180) while in subpopulation AFR AF = 0.00147 (61/41512). AF 95% confidence interval is 0.00117. There are 1 homozygotes in GnomAd4. There are 30 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020919.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALS2	NM_020919.4	MANE Select	c.4964A>C	p.Lys1655Thr	missense	Exon 34 of 34	NP_065970.2
	ALS2	NM_001410975.1		c.4961A>C	p.Lys1654Thr	missense	Exon 34 of 34	NP_001397904.1	A0A7P0T8F3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALS2	ENST00000264276.11	TSL:1 MANE Select	c.4964A>C	p.Lys1655Thr	missense	Exon 34 of 34	ENSP00000264276.6	Q96Q42-1
ALS2	ENST00000680497.1		c.5066A>C	p.Lys1689Thr	missense	Exon 34 of 34	ENSP00000505954.1	A0A7P0Z4F3
ALS2	ENST00000905985.1		c.5057A>C	p.Lys1686Thr	missense	Exon 35 of 35	ENSP00000576044.1

Frequencies

GnomAD3 genomes

AF:

0.000427

AC:

AN:

152062

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000478

GnomAD2 exomes

AF:

0.000105

AC:

AN:

248180

AF XY:

0.0000965

show subpopulations

Gnomad AFR exome

AF:

0.00142

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.0000554

AC:

AN:

1461614

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727110

show subpopulations

African (AFR)

AF:

0.00203

AC:

AN:

33470

American (AMR)

AF:

0.000112

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39634

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111860

Other (OTH)

AF:

0.000132

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000434

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74396

show subpopulations

African (AFR)

AF:

0.00147

AC:

AN:

41512

American (AMR)

AF:

0.000262

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000153

Hom.:

Bravo

AF:

0.000374

ESP6500AA

AF:

0.000804

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000993

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Inborn genetic diseases (1)

Infantile-onset ascending hereditary spastic paralysis (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.60

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.80

M_CAP

Benign

0.063

MetaRNN

Benign

0.092

MetaSVM

Benign

-0.83

MutationAssessor

Benign

0.95

PhyloP100

7.6

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-2.2

REVEL

Benign

0.26

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.010

Polyphen

1.0

Vest4

0.48

MVP

0.76

MPC

0.55

ClinPred

0.12

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.42

gMVP

0.75

Mutation Taster

=35/65

disease causing

(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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over