12-7018351-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005768.6(LPCAT3):c.74A>G(p.Glu25Gly) variant causes a missense 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: LPCAT3 NM_005768.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.61

Genes affected

LPCAT3 (HGNC:30244): (lysophosphatidylcholine acyltransferase 3) Enables 1-acylglycerophosphocholine O-acyltransferase activity; 1-acylglycerophosphoethanolamine O-acyltransferase activity; and 1-acylglycerophosphoserine O-acyltransferase activity. Involved in phosphatidylcholine acyl-chain remodeling; phosphatidylethanolamine acyl-chain remodeling; and phosphatidylserine acyl-chain remodeling. Located in endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

C1S (HGNC:1247): (complement C1s) This gene encodes a serine protease, which is a major constituent of the human complement subcomponent C1. C1s associates with two other complement components C1r and C1q in order to yield the first component of the serum complement system. Defects in this gene are the cause of selective C1s deficiency. [provided by RefSeq, Mar 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18376833).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LPCAT3	NM_005768.6	c.74A>G	p.Glu25Gly	missense_variant	1/13	ENST00000261407.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LPCAT3	ENST00000261407.9	c.74A>G	p.Glu25Gly	missense_variant	1/13	1	NM_005768.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 01, 2021

The c.74A>G (p.E25G) alteration is located in exon 1 (coding exon 1) of the LPCAT3 gene. This alteration results from a A to G substitution at nucleotide position 74, causing the glutamic acid (E) at amino acid position 25 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_addAF	Benign	-0.0030	T
BayesDel_noAF	Benign	-0.24
Cadd	Benign	22
Dann	Uncertain	1.0
DEOGEN2	Benign	0.014	T
Eigen	Benign	-0.22
Eigen_PC	Benign	-0.075
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.72	T
M_CAP	Benign	0.058	D
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.4	L
MutationTaster	Benign	1.0	D;N
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-0.070	N
REVEL	Benign	0.068
Sift	Uncertain	0.010	D
Sift4G	Benign	0.10	T
Polyphen		0.084	B
Vest4		0.17
MutPred		0.33		Gain of catalytic residue at E25 (P = 0.0487);
MVP		0.19
MPC		0.82
ClinPred		0.76	D
GERP RS		5.0
Varity_R		0.11
gMVP		0.28

Splicing

Name	Calibrated prediction	Score	Prediction
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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-7125655;