NM_001135608.3:c.1250A>G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001135608.3(ARHGAP26):c.1250A>G(p.Asn417Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000999 in 1,602,394 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

ARHGAP26
NM_001135608.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 4.52

Publications

2 publications found

Variant links:

COSMIC-nc: COSV50824607

Genes affected

ARHGAP26 (HGNC:17073): (Rho GTPase activating protein 26) Interaction of a cell with the extracellular matrix triggers integrin cell surface receptors to begin signaling cascades that regulate the organization of the actin-cytoskeleton. One of the proteins involved in these cascades is focal adhesion kinase. The protein encoded by this gene is a GTPase activating protein that binds to focal adhesion kinase and mediates the activity of the GTP binding proteins RhoA and Cdc42. Defects in this gene are a cause of juvenile myelomonocytic leukemia (JMML). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2017]

ARHGAP26 Gene-Disease associations (from GenCC):

juvenile myelomonocytic leukemia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Ambry Genetics

ARHGAP26 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.14344004).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARHGAP26	NM_001135608.3 link	c.1250A>G	p.Asn417Ser	missense_variant	Exon 14 of 23	ENST00000645722.2	NP_001129080.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARHGAP26	ENST00000645722.2 link	c.1250A>G	p.Asn417Ser	missense_variant	Exon 14 of 23		NM_001135608.3	ENSP00000495131.1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152006

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000430

AC:

AN:

232354

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.0000681

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000552

AC:

AN:

1450388

Hom.:

Cov.:

AF XY:

0.00000694

AC XY:

AN XY:

720132

show subpopulations

African (AFR)

AF:

0.0000902

AC:

AN:

33254

American (AMR)

AF:

0.00

AC:

AN:

43398

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25918

East Asian (EAS)

AF:

0.00

AC:

AN:

39230

South Asian (SAS)

AF:

0.00

AC:

AN:

84070

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52678

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.00000452

AC:

AN:

1106130

Other (OTH)

AF:

0.00

AC:

AN:

59954

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.444

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152006

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74250

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41380

American (AMR)

AF:

0.00

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67998

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.531

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Juvenile myelomonocytic leukemia

Pathogenic:1

Aug 01, 2000

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

not specified

Uncertain:1

Jun 30, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1250A>G (p.N417S) alteration is located in exon 14 (coding exon 14) of the ARHGAP26 gene. This alteration results from a A to G substitution at nucleotide position 1250, causing the asparagine (N) at amino acid position 417 to be replaced by a serine (S). 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

0.064

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.69

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.11

T;.;T;.;.

Eigen

Benign

-0.030

Eigen_PC

Benign

0.11

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.0

.;D;D;D;D

M_CAP

Benign

0.0057

MetaRNN

Benign

0.14

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.32

N;N;N;.;.

PhyloP100

4.5

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-1.1

N;.;N;.;.

REVEL

Benign

0.097

Sift

Benign

0.74

T;.;T;.;.

Sift4G

Benign

0.68

T;.;T;.;.

Vest4

0.27

ClinPred

0.10

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.14

gMVP

0.34

Mutation Taster

=24/76

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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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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