18-42923653-C-T

Variant names:

• chr18-42923653-C-T
• rs750689156
• NM_002930.4:c.345G>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_002930.4(RIT2):​c.345G>A​(p.Glu115Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,848 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.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: RIT2 NM_002930.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0910
• Publications: 0 publications found

Genes affected

RIT2 (HGNC:10017): (Ras like without CAAX 2) RIN belongs to the RAS (HRAS; MIM 190020) superfamily of small GTPases (Shao et al., 1999 [PubMed 10545207]).[supplied by OMIM, Mar 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.104795784).
• BP7: Synonymous conserved (PhyloP=0.091 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002930.4. 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
	RIT2	NM_002930.4	MANE Select	c.345G>A	p.Glu115Glu	synonymous	Exon 4 of 5	NP_002921.1	Q99578-1
	RIT2	NM_001272077.2		c.345G>A	p.Glu115Glu	synonymous	Exon 4 of 6	NP_001259006.1	Q99578-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RIT2	ENST00000326695.10	TSL:1 MANE Select	c.345G>A	p.Glu115Glu	synonymous	Exon 4 of 5	ENSP00000321805.4	Q99578-1
	RIT2	ENST00000589109.5	TSL:1	c.345G>A	p.Glu115Glu	synonymous	Exon 4 of 6	ENSP00000467217.1	Q99578-2
	RIT2	ENST00000590910.1	TSL:5	c.407G>A	p.Ser136Asn	missense	Exon 5 of 6	ENSP00000466620.1	K7EMR8

Frequencies

GnomAD3 genomes AF: 0.00000659 AC: 1 AN: 151848 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

GnomAD4 exome Cov.: 30

GnomAD4 genome AF: 0.00000659 AC: 1 AN: 151848 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74118

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41354

American (AMR) AF: 0.00 AC: 0 AN: 15210

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5150

South Asian (SAS) AF: 0.00 AC: 0 AN: 4810

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10558

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67980

Other (OTH) AF: 0.00 AC: 0 AN: 2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Benign	8.0
DANN	Benign	0.51
DEOGEN2	Benign	0.079	T
FATHMM_MKL	Benign	0.66	D
LIST_S2	Benign	0.31	T
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.10	T
PhyloP100		0.091
Vest4		0.22
MVP		0.82
GERP RS		2.3
Mutation Taster		=81/19	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs750689156; hg19: chr18-40503618;