1-225403331-G-T

Position:

chr1-225403331-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_002296.4(LBR):c.1820C>A(p.Pro607His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,613,436 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

LBR
NM_002296.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.44

Variant links:

Genes affected

LBR (HGNC:6518): (lamin B receptor) The protein encoded by this gene belongs to the ERG4/ERG24 family. It localized in the nuclear envelope inner membrane and anchors the lamina and the heterochromatin to the membrane. It may mediate interaction between chromatin and lamin B. Mutations of this gene has been associated with autosomal recessive HEM/Greenberg skeletal dysplasia. Alternative splicing occurs at this locus and two transcript variants encoding the same protein have been identified. [provided by RefSeq, Jul 2008]

LBR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.908

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LBR	NM_002296.4 linkuse as main transcript	c.1820C>A	p.Pro607His	missense_variant	14/14	ENST00000272163.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
LBR	ENST00000272163.9 linkuse as main transcript	c.1820C>A	p.Pro607His	missense_variant	14/14	1	NM_002296.4	P1
LBR	ENST00000338179.6 linkuse as main transcript	c.1820C>A	p.Pro607His	missense_variant	14/14	5		P1
LBR	ENST00000441022.1 linkuse as main transcript	n.295C>A		non_coding_transcript_exon_variant	2/2	2
LBR	ENST00000651341.1 linkuse as main transcript	c.*986C>A		3_prime_UTR_variant, NMD_transcript_variant	14/15

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151616

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000119

AC:

AN:

251454

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1461820

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000189

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151616

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73940

show subpopulations

Gnomad4 AFR

AF:

0.0000242

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

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jan 12, 2024

This sequence change replaces proline, which is neutral and non-polar, with histidine, which is basic and polar, at codon 607 of the LBR protein (p.Pro607His). This variant is present in population databases (rs779151785, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with LBR-related conditions. ClinVar contains an entry for this variant (Variation ID: 2081506). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt LBR protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Pathogenic

0.29

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.99

D;D

Eigen

Pathogenic

0.68

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.96

M_CAP

Pathogenic

0.40

MetaRNN

Pathogenic

0.91

D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.4

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-4.8

D;D

REVEL

Pathogenic

0.81

Sift

Uncertain

0.013

D;D

Sift4G

Uncertain

0.051

T;T

Polyphen

1.0

D;D

Vest4

0.34

MutPred

0.87

Gain of MoRF binding (P = 0.0416);Gain of MoRF binding (P = 0.0416);

MVP

0.83

MPC

0.39

ClinPred

0.92

GERP RS

6.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.46

gMVP

0.84

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