rs28940886

Positions:

• chr16-67942939-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000229.2(LCAT):​c.349G>A​(p.Ala117Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,584 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as no classification for the single variant (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: LCAT NM_000229.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.07

Genes affected

LCAT (HGNC:6522): (lecithin-cholesterol acyltransferase) This gene encodes the extracellular cholesterol esterifying enzyme, lecithin-cholesterol acyltransferase. The esterification of cholesterol is required for cholesterol transport. Mutations in this gene have been found to cause fish-eye disease as well as LCAT deficiency. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LCAT	NM_000229.2	c.349G>A	p.Ala117Thr	missense_variant	3/6	ENST00000264005.10	NP_000220.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LCAT	ENST00000264005.10	c.349G>A	p.Ala117Thr	missense_variant	3/6	1	NM_000229.2	ENSP00000264005	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000119 AC: 3 AN: 251156 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135782

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000464

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461584 Hom.: 0 Cov.: 33 AF XY: 0.00000688 AC XY: 5 AN XY: 727090

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000376

Gnomad4 NFE exome AF: 0.00000540

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.18
CADD	Benign	22
DANN	Benign	0.85
DEOGEN2	Uncertain	0.53	D;T
Eigen	Uncertain	0.52
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Uncertain	0.23	D
MetaRNN	Uncertain	0.62	D;D
MetaSVM	Uncertain	0.76	D
MutationAssessor	Benign	1.4	L;.
MutationTaster	Benign	0.91	A
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-0.71	N;.
REVEL	Uncertain	0.58
Sift	Benign	0.77	T;.
Sift4G	Benign	0.20	T;T
Polyphen		1.0	D;.
Vest4		0.78
MutPred		0.81		Gain of relative solvent accessibility (P = 0.0166);.;
MVP		0.95
MPC		0.43
ClinPred		0.21	T
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.40
gMVP		0.68

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs28940886; hg19: chr16-67976842; COSMIC: COSV50453130; COSMIC: COSV50453130;