15-78991760-T-G

Variant names:

• chr15-78991760-T-G
• NM_001145648.3:c.3062A>C

Variant summary

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

The NM_001145648.3(RASGRF1):​c.3062A>C​(p.His1021Pro) 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 1,461,726 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RASGRF1 NM_001145648.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.45

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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RASGRF1	NM_001145648.3	c.3062A>C	p.His1021Pro	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.3062A>C	p.His1021Pro	missense_variant	Exon 21 of 27	2	NM_001145648.3	ENSP00000452781.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461726 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727170

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

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	Pathogenic	0.82
BayesDel_addAF	Benign	0.010	T
BayesDel_noAF	Benign	-0.22
CADD	Uncertain	23
DANN	Uncertain	0.98
DEOGEN2	Benign	0.13	.;T;.
Eigen	Benign	0.14
Eigen_PC	Benign	0.13
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Benign	0.057	D
MetaRNN	Uncertain	0.58	D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.4	.;L;.
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.83	.;N;N
REVEL	Benign	0.26
Sift	Benign	0.039	.;D;T
Sift4G	Uncertain	0.011	D;D;D
Vest4		0.74
MVP		0.32
MPC		1.4
ClinPred		0.72	D
GERP RS		4.1
Varity_R		0.23
gMVP		0.86

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-79284102;