6-69676271-C-A

Position:

chr6-69676271-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018368.4(LMBRD1):c.1510G>T(p.Val504Leu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000868 in 1,612,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

LMBRD1
NM_018368.4 missense, splice_region

Scores

Splicing: ADA: 0.8920

Clinical Significance

Uncertain significance criteria provided, single submitter U:1O:1

Conservation

PhyloP100: 3.32

Variant links:

Genes affected

LMBRD1 (HGNC:23038): (LMBR1 domain containing 1) This gene encodes a lysosomal membrane protein that may be involved in the transport and metabolism of cobalamin. This protein also interacts with the large form of the hepatitis delta antigen and may be required for the nucleocytoplasmic shuttling of the hepatitis delta virus. Mutations in this gene are associated with the vitamin B12 metabolism disorder termed, homocystinuria-megaloblastic anemia complementation type F.[provided by RefSeq, Oct 2009]

LMBRD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20291588).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
LMBRD1	NM_018368.4 linkuse as main transcript	c.1510G>T	p.Val504Leu	missense_variant, splice_region_variant	16/16	ENST00000649934.3	NP_060838.3
LMBRD1	NM_001363722.2 linkuse as main transcript	c.1291G>T	p.Val431Leu	missense_variant, splice_region_variant	16/16		NP_001350651.1
LMBRD1	NM_001367271.1 linkuse as main transcript	c.1291G>T	p.Val431Leu	missense_variant, splice_region_variant	16/16		NP_001354200.1
LMBRD1	NM_001367272.1 linkuse as main transcript	c.1291G>T	p.Val431Leu	missense_variant, splice_region_variant	16/16		NP_001354201.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LMBRD1	ENST00000649934.3 linkuse as main transcript	c.1510G>T	p.Val504Leu	missense_variant, splice_region_variant	16/16		NM_018368.4	ENSP00000497690	P2	Q9NUN5-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000161

AC:

AN:

248754

Hom.:

AF XY:

0.0000223

AC XY:

AN XY:

134578

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000356

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000685

AC:

AN:

1460092

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726326

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000900

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152048

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74260

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000676

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Methylmalonic aciduria and homocystinuria type cblF

Uncertain:1Other:1

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jun 27, 2022	This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 504 of the LMBRD1 protein (p.Val504Leu). This variant is present in population databases (no rsID available, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with LMBRD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 684470). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -
not provided, no classification provided	phenotyping only	GenomeConnect, ClinGen	-	Variant interpretted as Uncertain significance and reported on 12/09/2017 by GTR ID 26957. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.44

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.028

T;T;.;.;.;.;.;.;.;.;.;.;.

Eigen

Benign

-0.081

Eigen_PC

Benign

-0.023

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

.;D;.;.;.;.;D;.;.;.;.;.;D

M_CAP

Benign

0.018

MetaRNN

Benign

0.20

T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

M;M;.;.;.;.;.;.;.;.;.;.;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.3

N;.;.;N;.;.;.;.;.;.;.;.;.

REVEL

Benign

0.030

Sift

Benign

0.035

D;.;.;D;.;.;.;.;.;.;.;.;.

Sift4G

Uncertain

0.039

D;.;.;D;.;.;.;.;.;.;.;.;.

Polyphen

0.31

B;B;.;.;.;.;.;.;.;.;.;.;.

Vest4

0.30

MutPred

0.31

Loss of catalytic residue at V504 (P = 0.2353);Loss of catalytic residue at V504 (P = 0.2353);.;.;.;.;.;.;.;.;.;.;.;

MVP

0.50

MPC

0.12

ClinPred

0.34

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

Varity_R

0.10

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.89

dbscSNV1_RF

Benign

0.65

SpliceAI score (max)

0.50

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.50

Position offset: 0

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