rs755253172

Variant names:

• chr16-20465707-T-A
• rs755253172
• NM_001308172.2:c.368T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001308172.2(ACSM2A):​c.368T>A​(p.Ile123Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,592 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 (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: ACSM2A NM_001308172.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0610
• Publications: 0 publications found

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]

ACMG classification

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=0.06193608).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001308172.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACSM2A	NM_001308172.2	MANE Select	c.368T>A	p.Ile123Asn	missense	Exon 3 of 14	NP_001295101.1	Q08AH3
	ACSM2A	NM_001308954.2		c.368T>A	p.Ile123Asn	missense	Exon 4 of 15	NP_001295883.1	Q08AH3
	ACSM2A	NM_001308169.2		c.131T>A	p.Ile44Asn	missense	Exon 2 of 13	NP_001295098.1	F5GWL3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACSM2A	ENST00000573854.6	TSL:1 MANE Select	c.368T>A	p.Ile123Asn	missense	Exon 3 of 14	ENSP00000459451.1	Q08AH3
	ACSM2A	ENST00000219054.10	TSL:1	c.368T>A	p.Ile123Asn	missense	Exon 4 of 15	ENSP00000219054.6	Q08AH3
	ACSM2A	ENST00000396104.2	TSL:1	c.368T>A	p.Ile123Asn	missense	Exon 2 of 13	ENSP00000379411.2	Q08AH3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000797 AC: 2 AN: 250834 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461592 Hom.: 0 Cov.: 34 AF XY: 0.00000413 AC XY: 3 AN XY: 727102

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111784

Other (OTH) AF: 0.0000166 AC: 1 AN: 60376

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	4.2
DANN	Benign	0.58
DEOGEN2	Benign	0.072	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.011	N
LIST_S2	Benign	0.23	T
M_CAP	Benign	0.0039	T
MetaRNN	Benign	0.062	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.80	N
PhyloP100		-0.061
PrimateAI	Benign	0.43	T
PROVEAN	Benign	3.0	N
REVEL	Benign	0.074
Sift	Benign	0.47	T
Sift4G	Benign	0.16	T
Polyphen		0.051	B
Vest4		0.32
MutPred		0.52		Gain of catalytic residue at I123 (P = 0.1412)
MVP		0.14
MPC		1.2
ClinPred		0.062	T
GERP RS		-3.6
Varity_R		0.43
gMVP		0.67
Mutation Taster		=75/25	polymorphism

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

Other links and lift over

dbSNP: rs755253172; hg19: chr16-20477029;