chr4-105589286-A-T

Position:

• chr4-105589286-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001242729.2(ARHGEF38):​c.235A>T​(p.Thr79Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ARHGEF38 NM_001242729.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0740

Genes affected

ARHGEF38 (HGNC:25968): (Rho guanine nucleotide exchange factor 38) Predicted to enable guanyl-nucleotide exchange factor activity. Predicted to be involved in regulation of catalytic activity. Predicted to be located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04957515).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGEF38	NM_001242729.2	c.235A>T	p.Thr79Ser	missense_variant	2/14	ENST00000420470.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGEF38	ENST00000420470.3	c.235A>T	p.Thr79Ser	missense_variant	2/14	5	NM_001242729.2	P1
ARHGEF38	ENST00000265154.6	c.235A>T	p.Thr79Ser	missense_variant	2/4	1
ARHGEF38	ENST00000506828.1	n.108A>T		non_coding_transcript_exon_variant	2/4	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Sep 13, 2023

The c.235A>T (p.T79S) alteration is located in exon 2 (coding exon 2) of the ARHGEF38 gene. This alteration results from a A to T substitution at nucleotide position 235, causing the threonine (T) at amino acid position 79 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	0.075
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.093
DANN	Benign	0.35
DEOGEN2	Benign	0.00011	.;T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.076	N
LIST_S2	Benign	0.23	T;T
M_CAP	Benign	0.0034	T
MetaRNN	Benign	0.050	T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.49	N;N
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.24	T
PROVEAN	Benign	0.050	N;N
REVEL	Benign	0.021
Sift	Benign	0.42	T;T
Sift4G	Benign	0.59	T;T
Polyphen		0.0010	.;B
Vest4		0.072
MutPred		0.092		Gain of glycosylation at T81 (P = 0.0135);Gain of glycosylation at T81 (P = 0.0135);
MVP		0.040
MPC		0.041
ClinPred		0.14	T
GERP RS		-2.4
Varity_R		0.028
gMVP		0.064

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: chr4-106510443;