19-11105470-C-T

Variant names:

• chr19-11105470-C-T
• rs121908034
• NM_000527.5:c.564C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP7 BP4

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.564C>T p.(Tyr188=) variant is classified as Likely benign for Familial Hypercholesterolemia by applying ACMG/AMP evidence codes BP4 and BP7 as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (specification version 1.2) on 30 August 2024. The supporting evidence is as follows:BP4: No REVEL, splicing evaluation needed. Functional data on splicing not available. A) Variant not on limits B) variant is exonic and at least 50 bp downstream from the canonical acceptor site, but it does not create GT. Variant is not predicted to alter splicing.BP7: Variant meets BP4 and is synonymous. LINK:https://erepo.genome.network/evrepo/ui/classification/CA043947/MONDO:0007750/013

• Frequency:
  • Genomes: 𝑓 0.00016 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00026 (0 hom.)
• Consequence: LDLR NM_000527.5 synonymous
• Clinical Significance: Likely benign reviewed by expert panel U:2 B:11
• Conservation: PhyloP100: -0.109
• Publications: 9 publications found

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

ACMG classification

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

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: For more information check the summary or visit ClinGen Evidence Repository.
• BP7: For more information check the summary or visit ClinGen Evidence Repository.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDLR	NM_000527.5	MANE Select	c.564C>T	p.Tyr188Tyr	synonymous	Exon 4 of 18	NP_000518.1	P01130-1
	LDLR	NM_001195798.2		c.564C>T	p.Tyr188Tyr	synonymous	Exon 4 of 18	NP_001182727.1	P01130-5
	LDLR	NM_001195799.2		c.441C>T	p.Tyr147Tyr	synonymous	Exon 3 of 17	NP_001182728.1	P01130-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDLR	ENST00000558518.6	TSL:1 MANE Select	c.564C>T	p.Tyr188Tyr	synonymous	Exon 4 of 18	ENSP00000454071.1	P01130-1
	LDLR	ENST00000252444.10	TSL:1	c.822C>T	p.Tyr274Tyr	synonymous	Exon 4 of 18	ENSP00000252444.6	J3KMZ9
	LDLR	ENST00000558013.5	TSL:1	c.564C>T	p.Tyr188Tyr	synonymous	Exon 4 of 18	ENSP00000453346.1	P01130-5

Frequencies

GnomAD3 genomes AF: 0.000158 AC: 24 AN: 152214 Hom.: 0 Cov.: 33

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: 0.000338

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000875 AC: 22 AN: 251304 AF XY: 0.0000809

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: 0.000185

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000255 AC: 373 AN: 1461716 Hom.: 0 Cov.: 33 AF XY: 0.000223 AC XY: 162 AN XY: 727170

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53248

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.000299 AC: 332 AN: 1112008

Other (OTH) AF: 0.000646 AC: 39 AN: 60394

GnomAD4 genome AF: 0.000158 AC: 24 AN: 152214 Hom.: 0 Cov.: 33 AF XY: 0.000108 AC XY: 8 AN XY: 74366

African (AFR) AF: 0.0000241 AC: 1 AN: 41454

American (AMR) AF: 0.00 AC: 0 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000338 AC: 23 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000270 Hom.: 0

Bravo AF: 0.000155

EpiCase AF: 0.000382

EpiControl AF: 0.000237

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	1	4	Hypercholesterolemia, familial, 1 (5)
-	1	2	Familial hypercholesterolemia (3)
-	-	2	not provided (2)
-	-	1	Cardiovascular phenotype (1)
-	-	1	LDLR-related disorder (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	4.6
DANN	Benign	0.77
PhyloP100		-0.11
PromoterAI		-0.030	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs121908034; hg19: chr19-11216146; COSMIC: COSV99370340; COSMIC: COSV99370340;