Genetic Variant LDLR:c.2389+41C>T (chr19-11128126-C-T) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_000527.5(LDLR):c.2389+41C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000676 in 1,575,942 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). The gene LDLR is included in the ClinGen Criteria Specification Registry.

Frequency

Genomes: 𝑓 0.00033 ( 1 hom., cov: 31)

Exomes 𝑓: 0.00071 ( 17 hom. )

Consequence

LDLR
NM_000527.5 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -2.04

Publications

2 publications found

Variant links:

Genes affected

LDLR (HGNC:6547): (low density lipoprotein receptor) The low density lipoprotein receptor (LDLR) gene family consists of cell surface proteins involved in receptor-mediated endocytosis of specific ligands. The encoded protein is normally bound at the cell membrane, where it binds low density lipoprotein/cholesterol and is taken into the cell. Lysosomes release the cholesterol, which is made available for repression of microsomal enzyme 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase, the rate-limiting step in cholesterol synthesis. At the same time, a reciprocal stimulation of cholesterol ester synthesis takes place. Mutations in this gene cause the autosomal dominant disorder, familial hypercholesterolemia. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2022]

LDLR Gene-Disease associations (from GenCC):

hypercholesterolemia, familial, 1
Inheritance: AD, SD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen
homozygous familial hypercholesterolemia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LDLR links:

Genome browser will be placed here

ACMG classification

Specifications for LDLR are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.89).

BP6

Variant 19-11128126-C-T is Benign according to our data. Variant chr19-11128126-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1712915.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000335 (51/152258) while in subpopulation SAS AF = 0.0104 (50/4824). AF 95% confidence interval is 0.00808. There are 1 homozygotes in GnomAd4. There are 38 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 17 AD,AR,SD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000527.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
LDLR	NM_000527.5	MANE Select	c.2389+41C>T	intron	N/A	NP_000518.1	P01130-1
LDLR	NM_001195798.2		c.2389+41C>T	intron	N/A	NP_001182727.1	P01130-5
LDLR	NM_001195799.2		c.2266+41C>T	intron	N/A	NP_001182728.1	P01130-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
LDLR	ENST00000558518.6	TSL:1 MANE Select	c.2389+41C>T	intron	N/A	ENSP00000454071.1	P01130-1
LDLR	ENST00000252444.10	TSL:1	c.2647+41C>T	intron	N/A	ENSP00000252444.6	J3KMZ9
LDLR	ENST00000558013.5	TSL:1	c.2389+41C>T	intron	N/A	ENSP00000453346.1	P01130-5

Frequencies

GnomAD3 genomes

AF:

0.000335

AC:

AN:

152140

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:

0.0104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00140

AC:

351

AN:

250664

AF XY:

0.00178

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000713

AC:

1015

AN:

1423684

Hom.:

Cov.:

AF XY:

0.000970

AC XY:

689

AN XY:

710398

show subpopulations

African (AFR)

AF:

0.0000305

AC:

AN:

32744

American (AMR)

AF:

0.00

AC:

AN:

44676

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25906

East Asian (EAS)

AF:

0.00

AC:

AN:

39526

South Asian (SAS)

AF:

0.0111

AC:

952

AN:

85540

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53106

Middle Eastern (MID)

AF:

0.000176

AC:

AN:

5684

European-Non Finnish (NFE)

AF:

0.00000278

AC:

AN:

1077328

Other (OTH)

AF:

0.000980

AC:

AN:

59174

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

132

198

264

330

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000335

AC:

AN:

152258

Hom.:

Cov.:

AF XY:

0.000510

AC XY:

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41552

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.0104

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.0000982

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

0.22

(source)

DANN

Benign

0.64

PhyloP100

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

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

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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

Computational scores

Splicing

Publications

Other links and lift over