8-19948197-GAC-TAT

Variant names:

• chr8-19948197-GAC-TAT
• NM_000237.3:c.106_108delGACinsTAT
• LPL p.Asp36Tyr

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP2

The NM_000237.3(LPL):​c.106_108delGACinsTAT​(p.Asp36Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D36N) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: LPL NM_000237.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.48
• Publications: 0 publications found

Genes affected

LPL (HGNC:6677): (lipoprotein lipase) LPL encodes lipoprotein lipase, which is expressed in heart, muscle, and adipose tissue. LPL functions as a homodimer, and has the dual functions of triglyceride hydrolase and ligand/bridging factor for receptor-mediated lipoprotein uptake. Severe mutations that cause LPL deficiency result in type I hyperlipoproteinemia, while less extreme mutations in LPL are linked to many disorders of lipoprotein metabolism. [provided by RefSeq, Jul 2008]

LPL Gene-Disease associations (from GenCC):

• familial lipoprotein lipase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Laboratory for Molecular Medicine, Genomics England PanelApp, Ambry Genetics
• hyperlipidemia, familial combined, LPL related

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 52 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Trascript score misZ: -0.36753 (below the threshold of 3.09). GenCC associations: The gene is linked to familial lipoprotein lipase deficiency, hyperlipidemia, familial combined, LPL related.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000237.3. 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
	LPL	NM_000237.3	MANE Select	c.106_108delGACinsTAT	p.Asp36Tyr	missense	N/A	NP_000228.1	P06858

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LPL	ENST00000650287.1	MANE Select	c.106_108delGACinsTAT	p.Asp36Tyr	missense	N/A	ENSP00000497642.1	P06858
	LPL	ENST00000965928.1		c.106_108delGACinsTAT	p.Asp36Tyr	missense	N/A	ENSP00000635987.1
	LPL	ENST00000965929.1		c.106_108delGACinsTAT	p.Asp36Tyr	missense	N/A	ENSP00000635988.1

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.5

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr8-19805708;