19-11113414-C-T

Variant names:

• chr19-11113414-C-T
• rs5933
• NM_000527.5:c.1323C>T

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP7 BS1 BS2 BP4

This summary comes from the ClinGen Evidence Repository: The NM_000527.4(LDLR):c.1323C>T (p.Ile441=) variant is classified as Benign for Familial Hypercholesterolemia by applying evidence codes BS1, BS2, BP4 and BP7 as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1101/2021.03.17.21252755). The supporting evidence is as follows: BS1 - FAF = 0.003722 (0.37%) in African exomes (gnomAD v2.1.1).BS2 - Variant is observed in heterozygosity in 5 normolipidemic adults.BP4 - no REVEL, splicing evaluation required. No functional study performed. A) not on limits B) does not create GT C) no GT nearby.BP7 - Variant is synonymous and meets BP4. LINK:https://erepo.genome.network/evrepo/ui/classification/CA033568/MONDO:0007750/013

• Frequency:
  • Genomes: 𝑓 0.0013 (2 hom., cov: 29)
  • Exomes 𝑓: 0.00014 (1 hom.)
• Consequence: LDLR NM_000527.5 synonymous
• Clinical Significance: Benign reviewed by expert panel B:12
• Conservation: PhyloP100: 0.301
• 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]

MIR6886 (HGNC:50121): (microRNA 6886) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

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

Our verdict: Benign. The variant received -10 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.
• BS1: For more information check the summary or visit ClinGen Evidence Repository.
• BS2: 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.1323C>T	p.Ile441Ile	synonymous	Exon 9 of 18	NP_000518.1	P01130-1
	LDLR	NM_001195798.2		c.1323C>T	p.Ile441Ile	synonymous	Exon 9 of 18	NP_001182727.1	P01130-5
	LDLR	NM_001195799.2		c.1200C>T	p.Ile400Ile	synonymous	Exon 8 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.1323C>T	p.Ile441Ile	synonymous	Exon 9 of 18	ENSP00000454071.1	P01130-1
	LDLR	ENST00000252444.10	TSL:1	c.1581C>T	p.Ile527Ile	synonymous	Exon 9 of 18	ENSP00000252444.6	J3KMZ9
	LDLR	ENST00000558013.5	TSL:1	c.1323C>T	p.Ile441Ile	synonymous	Exon 9 of 18	ENSP00000453346.1	P01130-5

Frequencies

GnomAD3 genomes AF: 0.00126 AC: 192 AN: 152176 Hom.: 2 Cov.: 29

Gnomad AFR AF: 0.00432

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000589

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: 0.00

Gnomad OTH AF: 0.00191

GnomAD2 exomes AF: 0.000318 AC: 80 AN: 251258 AF XY: 0.000287

Gnomad AFR exome AF: 0.00456

Gnomad AMR exome AF: 0.0000867

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000144 AC: 211 AN: 1461698 Hom.: 1 Cov.: 33 AF XY: 0.000122 AC XY: 89 AN XY: 727148

African (AFR) AF: 0.00556 AC: 186 AN: 33480

American (AMR) AF: 0.0000671 AC: 3 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: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53230

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1112010

Other (OTH) AF: 0.000298 AC: 18 AN: 60394

GnomAD4 genome AF: 0.00127 AC: 194 AN: 152294 Hom.: 2 Cov.: 29 AF XY: 0.00130 AC XY: 97 AN XY: 74466

African (AFR) AF: 0.00435 AC: 181 AN: 41572

American (AMR) AF: 0.000589 AC: 9 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5174

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

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

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68016

Other (OTH) AF: 0.00189 AC: 4 AN: 2114

Alfa AF: 0.000903 Hom.: 0

Bravo AF: 0.00143

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Benign

Revision: reviewed by expert panel

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.33
CADD	Benign	11
DANN	Benign	0.93
PhyloP100		0.30
Mutation Taster		=88/12	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: rs5933; hg19: chr19-11224090;