rs1042512

Variant names:

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP6_Very_StrongBA1

The NM_001278116.2(L1CAM):c.855C>T(p.Ala285Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00578 in 1,210,597 control chromosomes in the GnomAD database, including 265 homozygotes. There are 1,873 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.030 ( 133 hom., 913 hem., cov: 24)

Exomes 𝑓: 0.0033 ( 132 hom. 960 hem. )

Consequence

L1CAM
NM_001278116.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -2.20

Publications

3 publications found

Variant links:

Genes affected

L1CAM (HGNC:6470): (L1 cell adhesion molecule) The protein encoded by this gene is an axonal glycoprotein belonging to the immunoglobulin supergene family. The ectodomain, consisting of several immunoglobulin-like domains and fibronectin-like repeats (type III), is linked via a single transmembrane sequence to a conserved cytoplasmic domain. This cell adhesion molecule plays an important role in nervous system development, including neuronal migration and differentiation. Mutations in the gene cause X-linked neurological syndromes known as CRASH (corpus callosum hypoplasia, retardation, aphasia, spastic paraplegia and hydrocephalus). Alternative splicing of this gene results in multiple transcript variants, some of which include an alternate exon that is considered to be specific to neurons. [provided by RefSeq, May 2013]

L1CAM Gene-Disease associations (from GenCC):

L1 syndrome
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
X-linked hydrocephalus with stenosis of the aqueduct of Sylvius
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, G2P
MASA syndrome
Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
X-linked complicated corpus callosum dysgenesis
Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
X-linked complicated spastic paraplegia type 1
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

L1CAM links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP6

Variant X-153870192-G-A is Benign according to our data. Variant chrX-153870192-G-A is described in ClinVar as Benign. ClinVar VariationId is 158796.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0984 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001278116.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
L1CAM	NM_001278116.2	MANE Select	c.855C>T	p.Ala285Ala	synonymous	Exon 9 of 29	NP_001265045.1
L1CAM	NM_000425.5		c.855C>T	p.Ala285Ala	synonymous	Exon 8 of 28	NP_000416.1
L1CAM	NM_024003.3		c.855C>T	p.Ala285Ala	synonymous	Exon 8 of 27	NP_076493.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
L1CAM	ENST00000370060.7	TSL:5 MANE Select	c.855C>T	p.Ala285Ala	synonymous	Exon 9 of 29	ENSP00000359077.1
L1CAM	ENST00000361699.8	TSL:1	c.855C>T	p.Ala285Ala	synonymous	Exon 8 of 27	ENSP00000355380.4
L1CAM	ENST00000361981.7	TSL:1	c.840C>T	p.Ala280Ala	synonymous	Exon 7 of 26	ENSP00000354712.3

Frequencies

GnomAD3 genomes

AF:

0.0297

AC:

3346

AN:

112761

Hom.:

133

Cov.:

show subpopulations

Gnomad AFR

AF:

0.101

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0133

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00108

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000263

Gnomad OTH

AF:

0.0276

GnomAD2 exomes

AF:

0.00806

AC:

1474

AN:

182899

AF XY:

0.00510

show subpopulations

Gnomad AFR exome

AF:

0.101

Gnomad AMR exome

AF:

0.00409

Gnomad ASJ exome

AF:

0.000134

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.00376

GnomAD4 exome

AF:

0.00332

AC:

3641

AN:

1097783

Hom.:

132

Cov.:

AF XY:

0.00264

AC XY:

960

AN XY:

363183

show subpopulations

African (AFR)

AF:

0.114

AC:

3004

AN:

26392

American (AMR)

AF:

0.00531

AC:

187

AN:

35201

Ashkenazi Jewish (ASJ)

AF:

0.000206

AC:

AN:

19381

East Asian (EAS)

AF:

0.00

AC:

AN:

30196

South Asian (SAS)

AF:

0.000203

AC:

AN:

54104

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40411

Middle Eastern (MID)

AF:

0.00363

AC:

AN:

4134

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

841883

Other (OTH)

AF:

0.00697

AC:

321

AN:

46081

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

165

329

494

658

823

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

196

294

392

490

<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:

0.0297

AC:

3352

AN:

112814

Hom.:

133

Cov.:

AF XY:

0.0261

AC XY:

913

AN XY:

34966

show subpopulations

African (AFR)

AF:

0.101

AC:

3150

AN:

31091

American (AMR)

AF:

0.0133

AC:

143

AN:

10777

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2650

East Asian (EAS)

AF:

0.00

AC:

AN:

3579

South Asian (SAS)

AF:

0.00109

AC:

AN:

2762

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6243

Middle Eastern (MID)

AF:

0.00

AC:

AN:

219

European-Non Finnish (NFE)

AF:

0.000263

AC:

AN:

53263

Other (OTH)

AF:

0.0272

AC:

AN:

1543

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

111

222

333

444

555

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

128

160

<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:

0.0151

Hom.:

Bravo

AF:

0.0343

EpiCase

AF:

0.000164

EpiControl

AF:

0.000356

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (3)

not provided (2)

Hereditary spastic paraplegia (1)

Inborn genetic diseases (1)

Spastic paraplegia (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

6.9

(source)

DANN

Benign

0.50

PhyloP100

-2.2

Mutation Taster

=100/0

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.22

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.22

Position offset: -19

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over