Variant 22-43923985-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_025225.3(PNPLA3):c.74C>A(p.Ala25Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000694 in 1,584,858 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000063 ( 0 hom. )

Consequence

PNPLA3
NM_025225.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.199

Variant links:

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]

PNPLA3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.947

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PNPLA3	NM_025225.3 linkuse as main transcript	c.74C>A	p.Ala25Glu	missense_variant	1/9	ENST00000216180.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PNPLA3	ENST00000216180.8 linkuse as main transcript	c.74C>A	p.Ala25Glu	missense_variant	1/9	1	NM_025225.3	P1	Q9NST1-1
PNPLA3	ENST00000423180.2 linkuse as main transcript	c.74C>A	p.Ala25Glu	missense_variant	1/9	2			Q9NST1-2
PNPLA3	ENST00000406117.6 linkuse as main transcript	c.74C>A	p.Ala25Glu	missense_variant, NMD_transcript_variant	1/10	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000473

AC:

AN:

211582

Hom.:

AF XY:

0.0000338

AC XY:

AN XY:

118170

show subpopulations

Gnomad AFR exome

AF:

0.0000898

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000450

Gnomad SAS exome

AF:

0.0000352

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000188

GnomAD4 exome

AF:

0.00000628

AC:

AN:

1432522

Hom.:

Cov.:

AF XY:

0.00000561

AC XY:

AN XY:

712968

show subpopulations

Gnomad4 AFR exome

AF:

0.0000323

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000133

Gnomad4 SAS exome

AF:

0.0000119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.04e-7

Gnomad4 OTH exome

AF:

0.0000168

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000387

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000337

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 20, 2024

The c.74C>A (p.A25E) alteration is located in exon 1 (coding exon 1) of the PNPLA3 gene. This alteration results from a C to A substitution at nucleotide position 74, causing the alanine (A) at amino acid position 25 to be replaced by a glutamic acid (E). 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

Pathogenic

0.90

BayesDel_addAF

Benign

-0.079

BayesDel_noAF

Uncertain

-0.020

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.67

D;.

Eigen

Benign

0.048

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.24

LIST_S2

Benign

0.69

T;T

M_CAP

Pathogenic

0.55

MetaRNN

Pathogenic

0.95

D;D

MetaSVM

Uncertain

0.17

MutationAssessor

Uncertain

2.9

M;M

MutationTaster

Benign

0.95

D;D

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-2.8

D;D

REVEL

Uncertain

0.64

Sift

Uncertain

0.0070

D;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

D;.

Vest4

0.69

MutPred

0.86

Gain of disorder (P = 0.088);Gain of disorder (P = 0.088);

MVP

0.87

MPC

0.52

ClinPred

0.44

GERP RS

1.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.44

gMVP

0.82

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over