Variant chrX-153862678-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_StrongBP6_ModerateBP7BS2

The NM_001278116.2(L1CAM):c.3759C>T(p.Ala1253=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000182 in 1,208,277 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 24)

Exomes 𝑓: 0.000019 ( 0 hom. 8 hem. )

Consequence

L1CAM
NM_001278116.2 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.95

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

BP6

Variant X-153862678-G-A is Benign according to our data. Variant chrX-153862678-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2961710.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-1.95 with no splicing effect.

BS2

High Hemizygotes in GnomAdExome4 at 8 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
L1CAM	NM_001278116.2 linkuse as main transcript	c.3759C>T	p.Ala1253=	synonymous_variant	29/29	ENST00000370060.7
L1CAM	NM_000425.5 linkuse as main transcript	c.3759C>T	p.Ala1253=	synonymous_variant	28/28
L1CAM	NM_024003.3 linkuse as main transcript	c.3747C>T	p.Ala1249=	synonymous_variant	27/27
L1CAM	NM_001143963.2 linkuse as main transcript	c.3732C>T	p.Ala1244=	synonymous_variant	26/26

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
L1CAM	ENST00000370060.7 linkuse as main transcript	c.3759C>T	p.Ala1253=	synonymous_variant	29/29	5	NM_001278116.2	A1	P32004-1

Frequencies

GnomAD3 genomes

AF:

0.00000886

AC:

AN:

112873

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

35029

show subpopulations

Gnomad AFR

AF:

0.0000321

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:

0.0000277

AC:

AN:

180770

Hom.:

AF XY:

0.00

AC XY:

AN XY:

65796

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000534

Gnomad FIN exome

AF:

0.000126

Gnomad NFE exome

AF:

0.0000125

Gnomad OTH exome

AF:

0.000224

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1095404

Hom.:

Cov.:

AF XY:

0.0000222

AC XY:

AN XY:

360924

show subpopulations

Gnomad4 AFR exome

AF:

0.0000380

Gnomad4 AMR exome

AF:

0.0000284

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000331

Gnomad4 SAS exome

AF:

0.000130

Gnomad4 FIN exome

AF:

0.0000741

Gnomad4 NFE exome

AF:

0.00000833

Gnomad4 OTH exome

AF:

0.0000218

GnomAD4 genome

AF:

0.00000886

AC:

AN:

112873

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

35029

show subpopulations

Gnomad4 AFR

AF:

0.0000321

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:

0.00000378

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Spastic paraplegia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 27, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

0.027

DANN

Benign

0.48

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