chr11-110580292-A-T

Position:

• chr11-110580292-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001384657.1(ARHGAP20):​c.2654T>A​(p.Leu885His) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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)
• Consequence: ARHGAP20 NM_001384657.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.07

Genes affected

ARHGAP20 (HGNC:18357): (Rho GTPase activating protein 20) The protein encoded by this gene is an activator of RHO-type GTPases, transducing a signal from RAP1 to RHO and impacting neurite outgrowth. [provided by RefSeq, Sep 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.34418836).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGAP20	NM_001384657.1	c.2654T>A	p.Leu885His	missense_variant	15/15	ENST00000683387.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGAP20	ENST00000683387.1	c.2654T>A	p.Leu885His	missense_variant	15/15		NM_001384657.1	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

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

Jul 25, 2023

The c.2654T>A (p.L885H) alteration is located in exon 16 (coding exon 15) of the ARHGAP20 gene. This alteration results from a T to A substitution at nucleotide position 2654, causing the leucine (L) at amino acid position 885 to be replaced by a histidine (H). 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	0.21
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	25
DANN	Uncertain	0.98
DEOGEN2	Benign	0.17	T;T;.;.;.;.
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.80	T;T;T;.;T;T
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.34	T;T;T;T;T;T
MetaSVM	Benign	-0.88	T
MutationAssessor	Uncertain	2.7	M;.;.;.;.;.
MutationTaster	Benign	0.82	D;N;N;N;N;N;N
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-2.2	N;D;N;N;N;N
REVEL	Benign	0.25
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;D;D
Polyphen		1.0	D;.;D;.;D;.
Vest4		0.46
MutPred		0.36		Loss of stability (P = 0.0069);.;.;.;.;.;
MVP		0.61
MPC		0.61
ClinPred		0.97	D
GERP RS		4.9
Varity_R		0.60
gMVP		0.60

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-110451016;