rs200656731

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_006412.4(AGPAT2):​c.713C>T​(p.Ala238Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000549 in 1,602,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A238G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000054 ( 0 hom. )

Consequence

AGPAT2
NM_006412.4 missense

Scores

1
17

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.125

Publications

12 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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=0.018196613).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006412.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
AGPAT2
NM_006412.4
MANE Select
c.713C>Tp.Ala238Val
missense
Exon 6 of 6NP_006403.2
AGPAT2
NM_001012727.2
c.617C>Tp.Ala206Val
missense
Exon 5 of 5NP_001012745.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
AGPAT2
ENST00000371696.7
TSL:1 MANE Select
c.713C>Tp.Ala238Val
missense
Exon 6 of 6ENSP00000360761.2
AGPAT2
ENST00000371694.7
TSL:1
c.617C>Tp.Ala206Val
missense
Exon 5 of 5ENSP00000360759.3
AGPAT2
ENST00000472820.1
TSL:1
n.641C>T
non_coding_transcript_exon
Exon 4 of 4

Frequencies

GnomAD3 genomes
AF:
0.0000657
AC:
10
AN:
152188
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000386
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000729
AC:
17
AN:
233076
AF XY:
0.0000552
show subpopulations
Gnomad AFR exome
AF:
0.0000676
Gnomad AMR exome
AF:
0.0000613
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000171
Gnomad FIN exome
AF:
0.0000511
Gnomad NFE exome
AF:
0.0000668
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000538
AC:
78
AN:
1450518
Hom.:
0
Cov.:
31
AF XY:
0.0000499
AC XY:
36
AN XY:
720936
show subpopulations
African (AFR)
AF:
0.0000601
AC:
2
AN:
33258
American (AMR)
AF:
0.0000458
AC:
2
AN:
43698
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25838
East Asian (EAS)
AF:
0.0000509
AC:
2
AN:
39264
South Asian (SAS)
AF:
0.0000829
AC:
7
AN:
84446
European-Finnish (FIN)
AF:
0.0000193
AC:
1
AN:
51790
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4388
European-Non Finnish (NFE)
AF:
0.0000542
AC:
60
AN:
1108010
Other (OTH)
AF:
0.0000669
AC:
4
AN:
59826
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
5
10
14
19
24
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.0000657
AC:
10
AN:
152306
Hom.:
0
Cov.:
34
AF XY:
0.0000806
AC XY:
6
AN XY:
74468
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41572
American (AMR)
AF:
0.0000653
AC:
1
AN:
15312
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.000387
AC:
2
AN:
5170
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10626
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68010
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000218
Hom.:
0
Bravo
AF:
0.0000680
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000519
AC:
2
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000580
AC:
7

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Congenital generalized lipodystrophy type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.28
T
BayesDel_noAF
Benign
-0.42
CADD
Benign
0.18
DANN
Benign
0.71
DEOGEN2
Benign
0.072
T
Eigen
Benign
-2.0
Eigen_PC
Benign
-2.0
FATHMM_MKL
Benign
0.42
N
LIST_S2
Benign
0.094
T
M_CAP
Uncertain
0.24
D
MetaRNN
Benign
0.018
T
MetaSVM
Benign
-0.57
T
MutationAssessor
Benign
-0.51
N
PhyloP100
0.13
PrimateAI
Benign
0.34
T
PROVEAN
Benign
0.16
N
REVEL
Benign
0.21
Sift
Benign
0.71
T
Sift4G
Benign
0.33
T
Polyphen
0.0010
B
Vest4
0.029
MVP
0.66
MPC
0.16
ClinPred
0.011
T
GERP RS
-4.6
Varity_R
0.024
gMVP
0.26
Mutation Taster
=41/59
disease causing

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

Other links and lift over

dbSNP: rs200656731; hg19: chr9-139568328; COSMIC: COSV58247966; COSMIC: COSV58247966; API