10-88802950-G-C

Variant summary

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

The NM_001128215.1(LIPM):c.54G>C(p.Trp18Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000715 in 1,398,966 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000071 (0 hom.)
• Consequence: LIPM NM_001128215.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.30

Genes affected

LIPM (HGNC:23455): (lipase family member M) Predicted to enable lipoprotein lipase activity. Predicted to be involved in cornification. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

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	UniProt
LIPM	NM_001128215.1	c.54G>C	p.Trp18Cys	missense_variant	1/9	ENST00000404743.9
LIPM	XM_011539748.4	c.54G>C	p.Trp18Cys	missense_variant	1/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LIPM	ENST00000404743.9	c.54G>C	p.Trp18Cys	missense_variant	1/9	1	NM_001128215.1	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000715 AC: 10 AN: 1398966 Hom.: 0 Cov.: 30 AF XY: 0.00000725 AC XY: 5 AN XY: 689982

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: 0.00

Gnomad4 NFE exome AF: 0.00000834

Gnomad4 OTH exome AF: 0.0000172

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

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

Dec 19, 2023

The c.54G>C (p.W18C) alteration is located in exon 1 (coding exon 1) of the LIPM gene. This alteration results from a G to C substitution at nucleotide position 54, causing the tryptophan (W) at amino acid position 18 to be replaced by a cysteine (C). 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	Uncertain	0.39
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.060
Cadd	Pathogenic	26
Dann	Uncertain	0.99
DEOGEN2	Benign	0.10	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.074	D
MetaRNN	Uncertain	0.72	D
MetaSVM	Benign	-0.28	T
MutationAssessor	Uncertain	2.6	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.56	T
PROVEAN	Pathogenic	-6.7	D
REVEL	Uncertain	0.63
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.49
MutPred		0.70		Loss of helix (P = 0.0041);
MVP		0.84
MPC		0.0022
ClinPred		0.99	D
GERP RS		4.9
Varity_R		0.61
gMVP		0.79

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

LitVar

Other links and lift over

dbSNP: rs1200713254; hg19: chr10-90562707;