chr19-11111638-G-C

Variant names:

• chr19-11111638-G-C
• rs879254818
• NM_000527.5:c.1185G>C

Variant summary

Our verdict is Likely benign. The variant received 0 ACMG points: 2P and 2B. BP7 PM2 BP4

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.1185G>C (p.Val395=) variant is classified as Likely benign for Familial Hypercholesterolemia by applying evidence codes (PM2, BP4 and BP7) 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:PM2 - This variant is absent from gnomAD (gnomAD v2.1.1).BP4 - No REVEL available, splicing evaluation needed. Functional data on splicing not available. A) variant is located at -3 to +6 bases of canonical donor splicing site. MES scores: de novo donor = 9.1, authentic donor = 7.23. Ratio variant/wt = 1.26. It is above 1.0. Score ≥ 1.0 is supportive evidence of benign. B) The variant is located within range but does not create de novo GT site. C) Variant not on limits. Variant is not predicted to alter splicing. So BP4 is met.BP7 - Variant is synonymous and meets BP4. LINK:https://erepo.genome.network/evrepo/ui/classification/CA10585340/MONDO:0007750/013

• Frequency: Genomes: not found (cov: 31)
• Consequence: LDLR NM_000527.5 splice_region, synonymous
• Scores: Splicing: ADA: 0.00004094
• Clinical Significance: Likely benign reviewed by expert panel U:2 B:4
• Conservation: PhyloP100: -1.32
• Publications: 1 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: Likely_benign. The variant received 0 ACMG points.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDLR	NM_000527.5	MANE Select	c.1185G>C	p.Val395Val	splice_region synonymous	Exon 8 of 18	NP_000518.1
	LDLR	NM_001195798.2		c.1185G>C	p.Val395Val	splice_region synonymous	Exon 8 of 18	NP_001182727.1
	LDLR	NM_001195799.2		c.1062G>C	p.Val354Val	splice_region synonymous	Exon 7 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.1185G>C	p.Val395Val	splice_region synonymous	Exon 8 of 18	ENSP00000454071.1
	LDLR	ENST00000252444.10	TSL:1	c.1443G>C	p.Val481Val	splice_region synonymous	Exon 8 of 18	ENSP00000252444.6
	LDLR	ENST00000558013.5	TSL:1	c.1185G>C	p.Val395Val	splice_region synonymous	Exon 8 of 18	ENSP00000453346.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	1	3	Hypercholesterolemia, familial, 1 (4)
-	1	1	Familial hypercholesterolemia (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	0.045
DANN	Benign	0.46
PhyloP100		-1.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.7

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000041
dbscSNV1_RF	Benign	0.0040
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: rs879254818; hg19: chr19-11222314;