rs738408

chr22-43928850-C-Achr22-43928850-C-Gchr22-43928850-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_025225.3(PNPLA3):c.447C>A(p.Pro149=) variant causes a synonymous 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. Synonymous variant affecting the same amino acid position (i.e. P149P) has been classified as Benign.

• Frequency: Genomes: not found (cov: 30)
• Consequence: PNPLA3 NM_025225.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.31

Genes affected

PNPLA3 (HGNC:18590): (patatin like phospholipase domain containing 3) The protein encoded by this gene is a triacylglycerol lipase that mediates triacylglycerol hydrolysis in adipocytes. The encoded protein, which appears to be membrane bound, may be involved in the balance of energy usage/storage in adipocytes. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BP7: Synonymous conserved (PhyloP=-2.31 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PNPLA3	NM_025225.3	c.447C>A	p.Pro149=	synonymous_variant	3/9	ENST00000216180.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PNPLA3	ENST00000216180.8	c.447C>A	p.Pro149=	synonymous_variant	3/9	1	NM_025225.3	P1
PNPLA3	ENST00000423180.2	c.435C>A	p.Pro145=	synonymous_variant	3/9	2
PNPLA3	ENST00000478713.1	n.481C>A		non_coding_transcript_exon_variant	3/4	2
PNPLA3	ENST00000406117.6	c.*79C>A		3_prime_UTR_variant, NMD_transcript_variant	3/10	2

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
Cadd	Benign	0.19
Dann	Benign	0.45

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: chr22-44324730;