rs142145391

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_006412.4(AGPAT2):c.340C>T(p.Arg114Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000304 in 1,613,094 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R114H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0017 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

AGPAT2
NM_006412.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1B:3

Conservation

PhyloP100: 3.01

Publications

1 publications found

Variant links:

Genes affected

AGPAT2 (HGNC:325): (1-acylglycerol-3-phosphate O-acyltransferase 2) This gene encodes a member of the 1-acylglycerol-3-phosphate O-acyltransferase family. The protein is located within the endoplasmic reticulum membrane and converts lysophosphatidic acid to phosphatidic acid, the second step in de novo phospholipid biosynthesis. Mutations in this gene have been associated with congenital generalized lipodystrophy (CGL), or Berardinelli-Seip syndrome, a disease characterized by a near absence of adipose tissue and severe insulin resistance. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

AGPAT2 Gene-Disease associations (from GenCC):

congenital generalized lipodystrophy type 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
Berardinelli-Seip congenital lipodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
neonatal diabetes mellitus
Inheritance: AR Classification: LIMITED Submitted by: Genomics England PanelApp

AGPAT2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.039346397).

BP6

Variant 9-136677113-G-A is Benign according to our data. Variant chr9-136677113-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 393426.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00171 (261/152326) while in subpopulation AFR AF = 0.00606 (252/41568). AF 95% confidence interval is 0.00545. There are 2 homozygotes in GnomAd4. There are 124 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
AGPAT2	NM_006412.4 link	c.340C>T	p.Arg114Cys	missense_variant	Exon 3 of 6	ENST00000371696.7	NP_006403.2
AGPAT2	NM_001012727.2 link	c.340C>T	p.Arg114Cys	missense_variant	Exon 3 of 5		NP_001012745.1
AGPAT2	XM_047422636.1 link	c.31C>T	p.Arg11Cys	missense_variant	Exon 3 of 6		XP_047278592.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
AGPAT2	ENST00000371696.7 link	c.340C>T	p.Arg114Cys	missense_variant	Exon 3 of 6	1	NM_006412.4	ENSP00000360761.2
AGPAT2	ENST00000371694.7 link	c.340C>T	p.Arg114Cys	missense_variant	Exon 3 of 5	1		ENSP00000360759.3
AGPAT2	ENST00000472820.1 link	n.268C>T		non_coding_transcript_exon_variant	Exon 1 of 4	1
AGPAT2	ENST00000470861.1 link	n.634C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.00169

AC:

257

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00598

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.000428

AC:

106

AN:

247782

AF XY:

0.000327

show subpopulations

Gnomad AFR exome

AF:

0.00559

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000905

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000157

AC:

229

AN:

1460768

Hom.:

Cov.:

AF XY:

0.000151

AC XY:

110

AN XY:

726674

show subpopulations

African (AFR)

AF:

0.00541

AC:

181

AN:

33480

American (AMR)

AF:

0.000492

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111950

Other (OTH)

AF:

0.000315

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00171

AC:

261

AN:

152326

Hom.:

Cov.:

AF XY:

0.00166

AC XY:

124

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.00606

AC:

252

AN:

41568

American (AMR)

AF:

0.000457

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.000474

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000365

Hom.:

Bravo

AF:

0.00172

ESP6500AA

AF:

0.00613

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000544

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Oct 04, 2022

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BS1 -

Jul 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Congenital generalized lipodystrophy type 1

Pathogenic:1

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Significance:Likely risk allele

Review Status:flagged submission

Collection Method:research

Potent mutations in AGPAT2 gene are associated with Congenital generalized lipodystrophy, type 1, which can present with insulin resistance, fatty liver and diabetes. However, the role of this particular variant rs142145391 in Congenital generalized lipodystrophy is yet to be ascertained. -

AGPAT2-related disorder

Benign:1

Mar 27, 2020

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Monogenic diabetes

Benign:1

Jan 12, 2018

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:research

ACMG criteria: PP3 (10 predictors), BS1 (MAF too high for disorder, 0.59% in Africans), BS2(1 homozygote in ExAC in congenital disorder)=Benign -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Benign

-0.052

BayesDel_noAF

Pathogenic

0.16

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.85

.;D;D

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Benign

0.72

LIST_S2

Uncertain

0.96

D;.;D

M_CAP

Pathogenic

0.58

MetaRNN

Benign

0.039

T;T;T

MetaSVM

Uncertain

0.78

MutationAssessor

Pathogenic

3.3

M;M;M

PhyloP100

3.0

PrimateAI

Benign

0.44

PROVEAN

Pathogenic

-6.9

D;D;D

REVEL

Pathogenic

0.75

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.67

MVP

1.0

MPC

0.76

ClinPred

0.17

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.85

gMVP

0.82

Mutation Taster

=98/2

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over