15-78991779-C-G

Variant names:

• chr15-78991779-C-G
• rs528237918
• NM_001145648.3:c.3043G>C

Variant summary

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

The NM_001145648.3(RASGRF1):​c.3043G>C​(p.Ala1015Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,756 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RASGRF1 NM_001145648.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.577

Genes affected

RASGRF1 (HGNC:9875): (Ras protein specific guanine nucleotide releasing factor 1) The protein encoded by this gene is a guanine nucleotide exchange factor (GEF) similar to the Saccharomyces cerevisiae CDC25 gene product. Functional analysis has demonstrated that this protein stimulates the dissociation of GDP from RAS protein. The studies of the similar gene in mouse suggested that the Ras-GEF activity of this protein in brain can be activated by Ca2+ influx, muscarinic receptors, and G protein beta-gamma subunit. Mouse studies also indicated that the Ras-GEF signaling pathway mediated by this protein may be important for long-term memory. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Mar 2009]

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=0.09420487).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RASGRF1	NM_001145648.3	c.3043G>C	p.Ala1015Pro	missense_variant	Exon 21 of 27	ENST00000558480.7	NP_001139120.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RASGRF1	ENST00000558480.7	c.3043G>C	p.Ala1015Pro	missense_variant	Exon 21 of 27	2	NM_001145648.3	ENSP00000452781.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460756 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726492

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: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	20
DANN	Benign	0.87
DEOGEN2	Benign	0.15	.;T;.
Eigen	Benign	-0.80
Eigen_PC	Benign	-0.73
FATHMM_MKL	Benign	0.75	D
LIST_S2	Benign	0.85	T;T;T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.094	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.2	.;L;.
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-1.2	.;N;N
REVEL	Benign	0.020
Sift	Benign	0.19	.;T;T
Sift4G	Benign	0.13	T;T;T
Vest4		0.17
MVP		0.19
MPC		0.76
ClinPred		0.22	T
GERP RS		1.0
Varity_R		0.13
gMVP		0.61

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

LitVar

Other links and lift over

dbSNP: rs528237918; hg19: chr15-79284121;