11-824755-G-T

Variant names:

• chr11-824755-G-T
• rs374358848
• NM_020376.4:c.1408G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_020376.4(PNPLA2):​c.1408G>T​(p.Ala470Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000071 in 1,409,312 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 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. A470T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: PNPLA2 NM_020376.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.07
• Publications: 0 publications found

Genes affected

PNPLA2 (HGNC:30802): (patatin like phospholipase domain containing 2) This gene encodes an enzyme which catalyzes the first step in the hydrolysis of triglycerides in adipose tissue. Mutations in this gene are associated with neutral lipid storage disease with myopathy. [provided by RefSeq, Jul 2010]

PNPLA2 Gene-Disease associations (from GenCC):

• neutral lipid storage myopathy

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P

ENSG00000255108 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.050264925).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020376.4. 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
	PNPLA2	NM_020376.4	MANE Select	c.1408G>T	p.Ala470Ser	missense	Exon 10 of 10	NP_065109.1	Q96AD5-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PNPLA2	ENST00000336615.9	TSL:1 MANE Select	c.1408G>T	p.Ala470Ser	missense	Exon 10 of 10	ENSP00000337701.4	Q96AD5-1
	PNPLA2	ENST00000529255.1	TSL:1	n.838G>T		non_coding_transcript_exon	Exon 4 of 4
	PNPLA2	ENST00000869283.1		c.1792G>T	p.Ala598Ser	missense	Exon 11 of 11	ENSP00000539342.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.10e-7 AC: 1 AN: 1409312 Hom.: 0 Cov.: 42 AF XY: 0.00 AC XY: 0 AN XY: 698200

African (AFR) AF: 0.0000309 AC: 1 AN: 32372

American (AMR) AF: 0.00 AC: 0 AN: 39460

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25318

East Asian (EAS) AF: 0.00 AC: 0 AN: 37444

South Asian (SAS) AF: 0.00 AC: 0 AN: 81790

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35542

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5692

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1092934

Other (OTH) AF: 0.00 AC: 0 AN: 58760

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.076
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	0.013
DANN	Benign	0.81
DEOGEN2	Benign	0.12	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.021	N
LIST_S2	Benign	0.31	T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.050	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.2	L
PhyloP100		-2.1
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-0.18	N
REVEL	Benign	0.023
Sift	Benign	0.37	T
Sift4G	Benign	0.90	T
Polyphen		0.0010	B
Vest4		0.10
MutPred		0.10		Gain of glycosylation at A470 (P = 0.0033)
MVP		0.088
MPC		0.21
ClinPred		0.056	T
GERP RS		-7.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.027
gMVP		0.16
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs374358848; hg19: chr11-824755;