chr12-57478754-G-C

Variant names:

• chr12-57478754-G-C
• rs142371581
• NM_032496.4:c.320C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032496.4(ARHGAP9):​c.320C>G​(p.Pro107Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,216 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict 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. P107L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ARHGAP9 NM_032496.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.45
• Publications: 2 publications found

Genes affected

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]

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]

MARS1 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease axonal type 2U

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• severe early-onset pulmonary alveolar proteinosis due to MARS deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• autosomal recessive spastic paraplegia type 70

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Charcot-Marie-Tooth disease

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• trichothiodystrophy 9, nonphotosensitive

  Inheritance: AR, Unknown Classification: LIMITED Submitted by: Illumina, Labcorp Genetics (formerly Invitae)
• spastic paraplegia 70, autosomal recessive

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18212515).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032496.4. 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
	ARHGAP9	NM_032496.4	MANE Select	c.320C>G	p.Pro107Arg	missense	Exon 3 of 18	NP_115885.2	Q9BRR9-2
	ARHGAP9	NM_001319850.2		c.320C>G	p.Pro107Arg	missense	Exon 6 of 21	NP_001306779.2	Q9BRR9-1
	ARHGAP9	NM_001080157.2		c.320C>G	p.Pro107Arg	missense	Exon 2 of 16	NP_001073626.1	Q9BRR9-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARHGAP9	ENST00000393791.8	TSL:1 MANE Select	c.320C>G	p.Pro107Arg	missense	Exon 3 of 18	ENSP00000377380.3	Q9BRR9-2
	ARHGAP9	ENST00000393797.7	TSL:1	c.320C>G	p.Pro107Arg	missense	Exon 6 of 21	ENSP00000377386.3	Q9BRR9-1
	ARHGAP9	ENST00000906774.1		c.320C>G	p.Pro107Arg	missense	Exon 2 of 17	ENSP00000576833.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453216 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 721646

African (AFR) AF: 0.00 AC: 0 AN: 33132

American (AMR) AF: 0.00 AC: 0 AN: 43756

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25826

East Asian (EAS) AF: 0.00 AC: 0 AN: 39510

South Asian (SAS) AF: 0.00 AC: 0 AN: 86048

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53276

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5730

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1106006

Other (OTH) AF: 0.0000167 AC: 1 AN: 59932

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	14
DANN	Uncertain	0.99
DEOGEN2	Benign	0.080	T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.37
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.61	T
M_CAP	Benign	0.0083	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		1.5
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-1.5	N
REVEL	Benign	0.078
Sift	Uncertain	0.010	D
Sift4G	Benign	0.14	T
Polyphen		0.013	B
Vest4		0.33
MutPred		0.32		Gain of catalytic residue at L102 (P = 6e-04)
MVP		0.71
MPC		0.054
ClinPred		0.91	D
GERP RS		3.5
PromoterAI		0.28	Neutral
gMVP		0.35
Mutation Taster		=100/0	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: rs142371581; hg19: chr12-57872537;