19-38413018-C-T

Position:

chr19-38413018-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_170604.3(RASGRP4):c.1448G>A(p.Arg483Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000929 in 1,613,898 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000094 ( 0 hom. )

Consequence

RASGRP4
NM_170604.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.421

Variant links:

Genes affected

RASGRP4 (HGNC:18958): (RAS guanyl releasing protein 4) The protein encoded by this gene is a member of the Ras guanyl nucleotide-releasing protein (RasGRP) family of Ras guanine nucleotide exchange factors. It contains a Ras exchange motif, a diacylglycerol-binding domain, and two calcium-binding EF hands. This protein was shown to activate H-Ras in a cation-dependent manner in vitro. Expression of this protein in myeloid cell lines was found to be correlated with elevated level of activated RAS protein, and the RAS activation can be greatly enhanced by phorbol ester treatment, which suggested a role of this protein in diacylglycerol regulated cell signaling pathways. Studies of a mast cell leukemia cell line expressing substantial amounts of abnormal transcripts of this gene indicated that this gene may play an important role in the final stages of mast cell development. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2009]

RASGRP4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.036399513).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RASGRP4	NM_170604.3 linkuse as main transcript	c.1448G>A	p.Arg483Gln	missense_variant	12/17	ENST00000615439.5	NP_733749.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RASGRP4	ENST00000615439.5 linkuse as main transcript	c.1448G>A	p.Arg483Gln	missense_variant	12/17	1	NM_170604.3	ENSP00000479844	P1	Q8TDF6-1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000283

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000124

AC:

AN:

249282

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

135246

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000928

Gnomad NFE exome

AF:

0.0000796

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.0000937

AC:

137

AN:

1461694

Hom.:

Cov.:

AF XY:

0.0000921

AC XY:

AN XY:

727134

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00109

Gnomad4 NFE exome

AF:

0.0000585

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000283

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000175

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.000124

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 15, 2023

The c.1448G>A (p.R483Q) alteration is located in exon 12 (coding exon 12) of the RASGRP4 gene. This alteration results from a G to A substitution at nucleotide position 1448, causing the arginine (R) at amino acid position 483 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.017

.;.;.;.;.;.;T;.;.;T;.;T

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.58

FATHMM_MKL

Benign

0.20

LIST_S2

Uncertain

0.88

.;.;.;D;D;.;T;D;T;T;T;.

M_CAP

Benign

0.028

MetaRNN

Benign

0.036

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.76

MutationAssessor

Benign

1.4

.;.;.;.;.;.;.;.;.;L;.;L

MutationTaster

Benign

1.0

N;N;N;N;N;N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.35

.;.;.;.;.;.;.;N;N;.;N;.

REVEL

Benign

0.036

Sift

Benign

0.049

.;.;.;.;.;.;.;D;T;.;T;.

Sift4G

Uncertain

0.048

D;T;T;T;D;T;T;T;T;D;T;D

Polyphen

0.77

P;.;.;.;.;.;.;.;.;D;.;D

Vest4

0.23

MutPred

0.35

.;.;.;.;.;.;Loss of phosphorylation at T485 (P = 0.1077);.;.;Loss of phosphorylation at T485 (P = 0.1077);.;Loss of phosphorylation at T485 (P = 0.1077);

MVP

0.64

MPC

0.69

ClinPred

0.16

GERP RS

-0.28

Varity_R

0.054

gMVP

0.39

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over