16-20465517-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001308172.2(ACSM2A):​c.178G>A​(p.Ala60Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,546 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

ACSM2A
NM_001308172.2 missense, splice_region

Scores

1
18
Splicing: ADA: 0.01696
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.84
Variant links:
Genes affected
ACSM2A (HGNC:32017): (acyl-CoA synthetase medium chain family member 2A) This gene encodes a mitochondrial acyl-coenzyme A synthetase that is specific for medium chain fatty acids. These enzymes catalyze fatty acid activation, the first step of fatty acid metabolism, through the transfer of acyl-CoA. These enzymes also participate in the glycine conjugation pathway in the detoxification of xenobiotics such as benzoate and ibuprofen. Expression levels of this gene in the kidney may be correlated with kidney function. This gene and its paralog ACSM2B (Gene ID: 348158), both present on chromosome 16, likely arose from a chromosomal duplication event. [provided by RefSeq, May 2017]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.0881255).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ACSM2ANM_001308172.2 linkuse as main transcriptc.178G>A p.Ala60Thr missense_variant, splice_region_variant 3/14 ENST00000573854.6 NP_001295101.1 Q08AH3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ACSM2AENST00000573854.6 linkuse as main transcriptc.178G>A p.Ala60Thr missense_variant, splice_region_variant 3/141 NM_001308172.2 ENSP00000459451.1 Q08AH3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.0000159
AC:
4
AN:
250850
Hom.:
0
AF XY:
0.0000295
AC XY:
4
AN XY:
135562
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000218
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461546
Hom.:
0
Cov.:
31
AF XY:
0.00000413
AC XY:
3
AN XY:
727052
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000756
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

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 submitterclinical testingAmbry GeneticsJan 16, 2024The c.178G>A (p.A60T) alteration is located in exon 4 (coding exon 2) of the ACSM2A gene. This alteration results from a G to A substitution at nucleotide position 178, causing the alanine (A) at amino acid position 60 to be replaced by a threonine (T). 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
Benign
0.082
BayesDel_addAF
Benign
-0.36
T
BayesDel_noAF
Benign
-0.47
CADD
Benign
16
DANN
Benign
0.41
DEOGEN2
Benign
0.022
T;T;T;T;T;T
Eigen
Benign
-0.44
Eigen_PC
Benign
-0.32
FATHMM_MKL
Benign
0.73
D
LIST_S2
Benign
0.096
T;.;.;.;T;T
M_CAP
Benign
0.0071
T
MetaRNN
Benign
0.088
T;T;T;T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Uncertain
2.2
.;M;M;M;.;M
PrimateAI
Benign
0.36
T
PROVEAN
Benign
-1.2
.;.;N;.;.;N
REVEL
Benign
0.10
Sift
Benign
0.54
.;.;T;.;.;T
Sift4G
Benign
0.62
T;T;T;T;T;T
Polyphen
0.0
.;B;B;B;.;B
Vest4
0.12, 0.11
MutPred
0.25
Gain of phosphorylation at A60 (P = 0.0471);Gain of phosphorylation at A60 (P = 0.0471);Gain of phosphorylation at A60 (P = 0.0471);Gain of phosphorylation at A60 (P = 0.0471);Gain of phosphorylation at A60 (P = 0.0471);Gain of phosphorylation at A60 (P = 0.0471);
MVP
0.40
MPC
0.28
ClinPred
0.099
T
GERP RS
3.8
Varity_R
0.14
gMVP
0.19

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.017
dbscSNV1_RF
Benign
0.32
SpliceAI score (max)
0.14
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.

Other links and lift over

dbSNP: rs750212713; hg19: chr16-20476839; API