chr12-57488185-C-T

Variant names:

• chr12-57488185-C-T
• rs11540809
• NM_004990.4:c.95C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_004990.4(MARS1):​c.95C>T​(p.Thr32Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T32S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MARS1 NM_004990.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.55
• Publications: 0 publications found

Genes affected

MARS1 (HGNC:6898): (methionyl-tRNA synthetase 1) This gene encodes a member of the class I family of aminoacyl-tRNA synthetases. These enzymes play a critical role in protein biosynthesis by charging tRNAs with their cognate amino acids. The encoded protein is a component of the multi-tRNA synthetase complex and catalyzes the ligation of methionine to tRNA molecules. [provided by RefSeq, Jan 2011]

ARHGAP9 (HGNC:14130): (Rho GTPase activating protein 9) This gene encodes a member of the Rho-GAP family of GTPase activating proteins. The protein has substantial GAP activity towards several Rho-family GTPases in vitro, converting them to an inactive GDP-bound state. It is implicated in regulating adhesion of hematopoietic cells to the extracellular matrix. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29263812).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004990.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MARS1	NM_004990.4	MANE Select	c.95C>T	p.Thr32Ile	missense	Exon 1 of 21	NP_004981.2
	ARHGAP9	NM_001319850.2		c.-204+427G>A		intron	N/A	NP_001306779.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MARS1	ENST00000262027.10	TSL:1 MANE Select	c.95C>T	p.Thr32Ile	missense	Exon 1 of 21	ENSP00000262027.5
	ARHGAP9	ENST00000393797.7	TSL:1	c.-204+427G>A		intron	N/A	ENSP00000377386.3
	MARS1	ENST00000628866.2	TSL:5	c.95C>T	p.Thr32Ile	missense	Exon 1 of 19	ENSP00000486738.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152248 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

GnomAD2 exomes AF: 0.00000400 AC: 1 AN: 250102 AF XY: 0.00000739

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: 0.00000887

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461022 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 726682

African (AFR) AF: 0.00 AC: 0 AN: 33462

American (AMR) AF: 0.00 AC: 0 AN: 44674

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26108

East Asian (EAS) AF: 0.00 AC: 0 AN: 39688

South Asian (SAS) AF: 0.00 AC: 0 AN: 86236

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53322

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5748

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111420

Other (OTH) AF: 0.00 AC: 0 AN: 60364

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152248 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74376

African (AFR) AF: 0.00 AC: 0 AN: 41464

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68046

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.037	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	T
Eigen	Benign	0.0073
Eigen_PC	Benign	0.071
FATHMM_MKL	Benign	0.69	D
LIST_S2	Uncertain	0.87	D
M_CAP	Uncertain	0.17	D
MetaRNN	Benign	0.29	T
MetaSVM	Benign	-0.53	T
MutationAssessor	Benign	0.64	N
PhyloP100		1.5
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.3	N
REVEL	Uncertain	0.29
Sift	Benign	0.43	T
Sift4G	Benign	0.50	T
Polyphen		0.40	B
Vest4		0.44
MutPred		0.34		Gain of catalytic residue at V33 (P = 0.0067)
MVP		0.82
MPC		0.27
ClinPred		0.37	T
GERP RS		4.3
PromoterAI		0.045	Neutral
Varity_R		0.36
gMVP		0.21
Mutation Taster		=75/25	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs11540809; hg19: chr12-57881968;