chr15-38494393-C-T

Position:

• chr15-38494393-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005739.4(RASGRP1):​c.2248G>A​(p.Glu750Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,552 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RASGRP1 NM_005739.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.70

Genes affected

RASGRP1 (HGNC:9878): (RAS guanyl releasing protein 1) This gene is a member of a family of genes characterized by the presence of a Ras superfamily guanine nucleotide exchange factor (GEF) domain. It functions as a diacylglycerol (DAG)-regulated nucleotide exchange factor specifically activating Ras through the exchange of bound GDP for GTP. It activates the Erk/MAP kinase cascade and regulates T-cells and B-cells development, homeostasis and differentiation. Alternatively spliced transcript variants encoding different isoforms have been identified. Altered expression of the different isoforms of this protein may be a cause of susceptibility to systemic lupus erythematosus (SLE). [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25480086).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RASGRP1	NM_005739.4	c.2248G>A	p.Glu750Lys	missense_variant	16/17	ENST00000310803.10	NP_005730.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RASGRP1	ENST00000310803.10	c.2248G>A	p.Glu750Lys	missense_variant	16/17	1	NM_005739.4	ENSP00000310244	P1
	ENST00000661802.1	n.1086C>T		non_coding_transcript_exon_variant	1/2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461552 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727052

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.2248G>A (p.E750K) alteration is located in exon 16 (coding exon 16) of the RASGRP1 gene. This alteration results from a G to A substitution at nucleotide position 2248, causing the glutamic acid (E) at amino acid position 750 to be replaced by a lysine (K). 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	0.13
BayesDel_addAF	Uncertain	0.075	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.14	T;T;T;T;.
Eigen	Benign	0.057
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Uncertain	0.94	D;D;D;D;D
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.25	T;T;T;T;T
MetaSVM	Benign	-0.53	T
MutationAssessor	Benign	0.97	L;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-0.95	N;.;N;N;N
REVEL	Uncertain	0.39
Sift	Uncertain	0.0070	D;.;D;D;D
Sift4G	Benign	0.34	T;T;T;T;T
Polyphen		0.010	B;.;.;.;P
Vest4		0.41
MutPred		0.40		Loss of helix (P = 0.028);Loss of helix (P = 0.028);.;.;.;
MVP		0.57
MPC		0.54
ClinPred		0.55	D
GERP RS		5.2
Varity_R		0.45
gMVP		0.27

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-38786594;