dbSNP rs34330901: RAPGEF1:p.Arg1259Gln (chr9-131579513-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001377935.1(RAPGEF1):c.3776G>A(p.Arg1259Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,613,874 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: 𝑓 0.00024 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

RAPGEF1
NM_001377935.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.50

Publications

7 publications found

Variant links:

Genes affected

RAPGEF1 (HGNC:4568): (Rap guanine nucleotide exchange factor 1) This gene encodes a human guanine nucleotide exchange factor. It transduces signals from CRK by binding the SH3 domain of CRK, and activating several members of the Ras family of GTPases. This signaling cascade that may be involved in apoptosis, integrin-mediated signal transduction, and cell transformation. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

RAPGEF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2336573).

BS2

High AC in GnomAd4 at 36 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAPGEF1	NM_001377935.1 link	c.3776G>A	p.Arg1259Gln	missense_variant	Exon 27 of 27	ENST00000683357.1	NP_001364864.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAPGEF1	ENST00000683357.1 link	c.3776G>A	p.Arg1259Gln	missense_variant	Exon 27 of 27		NM_001377935.1	ENSP00000508246.1		A0A804HL87
RAPGEF1	ENST00000372189.7 link	c.3218G>A	p.Arg1073Gln	missense_variant	Exon 24 of 24	1		ENSP00000361263.2		Q13905-1

Frequencies

GnomAD3 genomes

AF:

0.000236

AC:

AN:

152260

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000772

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000605

AC:

AN:

248004

AF XY:

0.0000149

show subpopulations

Gnomad AFR exome

AF:

0.000839

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000464

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1461614

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727104

show subpopulations

African (AFR)

AF:

0.000448

AC:

AN:

33462

American (AMR)

AF:

0.0000224

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111834

Other (OTH)

AF:

0.0000166

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000236

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74382

show subpopulations

African (AFR)

AF:

0.000772

AC:

AN:

41472

American (AMR)

AF:

0.000131

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68046

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.457

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000437

Hom.:

Bravo

AF:

0.000181

ESP6500AA

AF:

0.00210

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000662

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 11, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.3272G>A (p.R1091Q) alteration is located in exon 24 (coding exon 24) of the RAPGEF1 gene. This alteration results from a G to A substitution at nucleotide position 3272, causing the arginine (R) at amino acid position 1091 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

Uncertain

0.38

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.24

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.26

T;.;.

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.96

D;D;D

M_CAP

Benign

0.060

MetaRNN

Benign

0.23

T;T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.4

L;.;.

PhyloP100

7.5

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-1.1

N;N;N

REVEL

Benign

0.22

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.019

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.58

MVP

0.64

MPC

2.4

ClinPred

0.34

GERP RS

4.8

Varity_R

0.61

gMVP

0.70

Mutation Taster

=84/16

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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rs34330901

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over