Genetic Variant L1TD1:p.Asn153Ser (chr1-62207086-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_019079.5(L1TD1):c.458A>G(p.Asn153Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,612,736 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

L1TD1
NM_019079.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.660

Variant links:

Genes affected

L1TD1 (HGNC:25595): (LINE1 type transposase domain containing 1) Predicted to enable single-stranded RNA binding activity. Predicted to be involved in transposition, RNA-mediated. Located in intracellular membrane-bounded organelle. [provided by Alliance of Genome Resources, Apr 2022]

L1TD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013533354).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
L1TD1	NM_019079.5 link	c.458A>G	p.Asn153Ser	missense_variant	Exon 3 of 4	ENST00000498273.2	NP_061952.3	Q5T7N2
L1TD1	NM_001164835.2 link	c.458A>G	p.Asn153Ser	missense_variant	Exon 4 of 5		NP_001158307.1	Q5T7N2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
L1TD1	ENST00000498273.2 link	c.458A>G	p.Asn153Ser	missense_variant	Exon 3 of 4	1	NM_019079.5	ENSP00000419901.1		Q5T7N2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000865

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:

0.0000370

AC:

AN:

243444

Hom.:

AF XY:

0.0000378

AC XY:

AN XY:

132260

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

Gnomad ASJ exome

AF:

0.000807

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:

0.0000246

AC:

AN:

1460522

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

726450

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.000959

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000865

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

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000495

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 11, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.458A>G (p.N153S) alteration is located in exon 4 (coding exon 1) of the L1TD1 gene. This alteration results from a A to G substitution at nucleotide position 458, causing the asparagine (N) at amino acid position 153 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.86

CADD

Benign

0.0040

DANN

Benign

0.49

DEOGEN2

Benign

0.036

Eigen

Benign

-1.6

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.0043

LIST_S2

Benign

0.44

M_CAP

Benign

0.0029

MetaRNN

Benign

0.014

MetaSVM

Benign

-0.96

MutationAssessor

Benign

-0.34

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.65

REVEL

Benign

0.050

Sift

Benign

0.56

Sift4G

Benign

1.0

Polyphen

0.0050

Vest4

0.032

MutPred

0.060

Gain of phosphorylation at N153 (P = 0.0618);

MVP

0.099

MPC

0.036

ClinPred

0.029

GERP RS

-3.8

Varity_R

0.018

gMVP

0.0086

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