Genetic Variant NM_001098671.2:c.1778G>C (chr11-64727354-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001098671.2(RASGRP2):c.1778G>C(p.Arg593Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,666 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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. R593C) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RASGRP2
NM_001098671.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.894

Publications

0 publications found

Variant links:

Genes affected

RASGRP2 (HGNC:9879): (RAS guanyl releasing protein 2) The protein encoded by this gene is a brain-enriched nucleotide exchanged factor that contains an N-terminal GEF domain, 2 tandem repeats of EF-hand calcium-binding motifs, and a C-terminal diacylglycerol/phorbol ester-binding domain. This protein can activate small GTPases, including RAS and RAP1/RAS3. The nucleotide exchange activity of this protein can be stimulated by calcium and diacylglycerol. Four alternatively spliced transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jan 2016]

RASGRP2 Gene-Disease associations (from GenCC):

platelet-type bleeding disorder 18
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, ClinGen
osteopetrosis
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp

RASGRP2 links:

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ACMG classification

Classification was made for transcript

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=0.2318125).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001098671.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RASGRP2	NM_001098671.2	MANE Select	c.1778G>C	p.Arg593Pro	missense	Exon 16 of 17	NP_001092141.1	Q7LDG7-1
RASGRP2	NM_001440703.1		c.1868G>C	p.Arg623Pro	missense	Exon 17 of 18	NP_001427632.1
RASGRP2	NM_001440704.1		c.1865G>C	p.Arg622Pro	missense	Exon 17 of 18	NP_001427633.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RASGRP2	ENST00000394432.8	TSL:1 MANE Select	c.1778G>C	p.Arg593Pro	missense	Exon 16 of 17	ENSP00000377953.3	Q7LDG7-1
RASGRP2	ENST00000354024.7	TSL:1	c.1778G>C	p.Arg593Pro	missense	Exon 16 of 17	ENSP00000338864.3	Q7LDG7-1
RASGRP2	ENST00000377497.7	TSL:1	c.1778G>C	p.Arg593Pro	missense	Exon 16 of 17	ENSP00000366717.3	Q7LDG7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461666

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727138

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111876

Other (OTH)

AF:

0.00

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

0.0013

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.10

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.023

FATHMM_MKL

Benign

0.60

LIST_S2

Benign

0.72

M_CAP

Benign

0.025

MetaRNN

Benign

0.23

MetaSVM

Benign

-0.82

MutationAssessor

Benign

0.34

PhyloP100

0.89

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.010

REVEL

Benign

0.26

Sift

Uncertain

0.016

Sift4G

Benign

0.18

Polyphen

0.53

Vest4

0.49

MutPred

0.20

Loss of helix (P = 0.0821)

MVP

0.42

MPC

0.78

ClinPred

0.79

GERP RS

3.6

Varity_R

0.24

gMVP

0.71

Mutation Taster

=85/15

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over