chr19-11107488-G-C

Variant names:

• chr19-11107488-G-C
• rs879254717
• NM_000527.5:c.914G>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP1 PP4 PS4_Supporting

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.914G>C (p.Trp305Ser) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes PS4_Supporting, PM2, PP1, and PP4 as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1016/j.gim.2021.09.012). The supporting evidence is as follows: PS4_Supporting: Variant meets PM2 and is identified in 2 index cases with DLCN criteria of probable FH from Lille University & CHRU Lille. So, PS4_Supporting is met. PM2: This variant is absent from gnomAD (gnomAD v2.1.1). So, PM2 is met. PP1: Variant segregates with FH phenotype in 2 informative meioses in 1 families from Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies. So, PP1 is met. PP4: Variant meets PM2 and is identified in 2 index cases who fulfill clinical criteria for FH, after alternative causes of high cholesterol were excluded (see PS4 for details). LINK:https://erepo.genome.network/evrepo/ui/classification/CA10585190/MONDO:0007750/013

• Frequency: Genomes: not found (cov: 32)
• Consequence: LDLR NM_000527.5 missense
• Clinical Significance: Uncertain significance reviewed by expert panel P:2 U:2
• Conservation: PhyloP100: 6.67
• Publications: 5 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: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen
• homozygous familial hypercholesterolemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PS4: For more information check the summary or visit ClinGen Evidence Repository.
• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PP1: For more information check the summary or visit ClinGen Evidence Repository.
• PP4: 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDLR	NM_000527.5	MANE Select	c.914G>C	p.Trp305Ser	missense	Exon 6 of 18	NP_000518.1
	LDLR	NM_001195798.2		c.914G>C	p.Trp305Ser	missense	Exon 6 of 18	NP_001182727.1
	LDLR	NM_001195799.2		c.791G>C	p.Trp264Ser	missense	Exon 5 of 17	NP_001182728.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDLR	ENST00000558518.6	TSL:1 MANE Select	c.914G>C	p.Trp305Ser	missense	Exon 6 of 18	ENSP00000454071.1
	LDLR	ENST00000252444.10	TSL:1	c.1172G>C	p.Trp391Ser	missense	Exon 6 of 18	ENSP00000252444.6
	LDLR	ENST00000558013.5	TSL:1	c.914G>C	p.Trp305Ser	missense	Exon 6 of 18	ENSP00000453346.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:2 Uncertain:2

Revision: reviewed by expert panel

Submissions by phenotype

Hypercholesterolemia, familial, 1 Pathogenic:2 Uncertain:2

Dec 16, 2016

Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies, APHP, GH Hôpitaux Universitaires Pitié-Salpêtrière / Charles-Foix

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

subject mutated among 2600 FH index cases screened = 1 , family members = 2 with co-segregation / previously described in association with FH

Mar 25, 2016

LDLR-LOVD, British Heart Foundation

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: literature only

Apr 28, 2023

ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel

Significance: Uncertain significance

Review Status: reviewed by expert panel

Collection Method: curation

The NM_000527.5(LDLR):c.914G>C (p.Trp305Ser) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes PS4_Supporting, PM2, PP1, and PP4 as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1016/j.gim.2021.09.012). The supporting evidence is as follows: PS4_Supporting: Variant meets PM2 and is identified in 2 index cases with DLCN criteria of probable FH from Lille University & CHRU Lille. So, PS4_Supporting is met. PM2: This variant is absent from gnomAD (gnomAD v2.1.1). So, PM2 is met. PP1: Variant segregates with FH phenotype in 2 informative meioses in 1 families from Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies. So, PP1 is met. PP4: Variant meets PM2 and is identified in 2 index cases who fulfill clinical criteria for FH, after alternative causes of high cholesterol were excluded (see PS4 for details).

Mar 30, 2017

U4M - Lille University & CHRU Lille, Université de Lille - CHRU de Lille

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.87	D
Eigen	Uncertain	0.21
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.87	D
M_CAP	Pathogenic	0.36	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Uncertain	0.73	D
MutationAssessor	Benign	1.5	L
PhyloP100		6.7
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-11	D
REVEL	Pathogenic	0.72
Sift	Benign	0.042	D
Sift4G	Benign	0.067	T
Polyphen		0.69	P
Vest4		0.48
MutPred		0.52		Gain of disorder (P = 9e-04)
MVP		1.0
MPC		0.85
ClinPred		1.0	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.85
gMVP		0.95
Mutation Taster		=0/100	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs879254717; hg19: chr19-11218164;