rs1800774

Positions:

• chr16-56981633-C-A
• chr16-56981633-C-G
• chr16-56981633-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000078.3(CETP):​c.1215-14C>A variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CETP NM_000078.3 splice_polypyrimidine_tract, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.579

Genes affected

CETP (HGNC:1869): (cholesteryl ester transfer protein) The protein encoded by this gene is found in plasma, where it is involved in the transfer of cholesteryl ester from high density lipoprotein (HDL) to other lipoproteins. Defects in this gene are a cause of hyperalphalipoproteinemia 1 (HALP1). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2013]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CETP	NM_000078.3	c.1215-14C>A		splice_polypyrimidine_tract_variant, intron_variant		ENST00000200676.8	NP_000069.2
CETP	NM_001286085.2	c.1035-14C>A		splice_polypyrimidine_tract_variant, intron_variant			NP_001273014.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CETP	ENST00000200676.8	c.1215-14C>A		splice_polypyrimidine_tract_variant, intron_variant		1	NM_000078.3	ENSP00000200676	P1
CETP	ENST00000379780.6	c.1035-14C>A		splice_polypyrimidine_tract_variant, intron_variant		1		ENSP00000369106
CETP	ENST00000566128.1	c.1020-14C>A		splice_polypyrimidine_tract_variant, intron_variant		5		ENSP00000456276
CETP	ENST00000650358.1	n.1613-14C>A		splice_polypyrimidine_tract_variant, intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	4.8
DANN	Benign	0.72

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs1800774; hg19: chr16-57015545;