NM_018957.6:c.797C>T

Variant names:

• chr22-37645383-C-T
• NM_018957.6:c.797C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018957.6(SH3BP1):​c.797C>T​(p.Thr266Ile) 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 1,458,204 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T266A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SH3BP1 NM_018957.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.702
• Publications: 0 publications found

Genes affected

SH3BP1 (HGNC:10824): (SH3 domain binding protein 1) This gene encodes a member of the Rho GTPase activating protein (RhoGAP) family. The encoded protein regulates Rac signaling and plays a role in cytoskeletal dynamics, cell motility and epithelial junction formation. This protein's association with the exocyst complex, which tethers secretory vesicles to the plasma membrane, has been demonstrated to be important in cell motility. In a distinct complex, this protein has been shown to regulate epithelial junction formation and morphogenesis. By interacting with the Plexin-D1 cell surface receptor, this protein mediates changes in the cytoskeleton in response to semaphorin binding. This protein may promote metastasis in human liver cancer cells and tissues. [provided by RefSeq, Mar 2017]

ENSG00000285304 (HGNC:):

PDXP-DT (HGNC:40525): (PDXP divergent transcript)

ACMG classification

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=0.110511035).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018957.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SH3BP1	NM_018957.6	MANE Select	c.797C>T	p.Thr266Ile	missense	Exon 10 of 18	NP_061830.3
	SH3BP1	NM_001350055.2		c.797C>T	p.Thr266Ile	missense	Exon 10 of 18	NP_001336984.1
	PDXP-DT	NR_109952.1		n.678-1622G>A		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SH3BP1	ENST00000649765.2	MANE Select	c.797C>T	p.Thr266Ile	missense	Exon 10 of 18	ENSP00000497104.1	Q9Y3L3-1
	ENSG00000285304	ENST00000451997.6	TSL:2	c.605C>T	p.Thr202Ile	missense	Exon 9 of 17	ENSP00000401076.2
	SH3BP1	ENST00000905665.1		c.830C>T	p.Thr277Ile	missense	Exon 10 of 18	ENSP00000575724.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1458204 Hom.: 0 Cov.: 31 AF XY: 0.00000276 AC XY: 2 AN XY: 724684

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33422

American (AMR) AF: 0.00 AC: 0 AN: 44600

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26082

East Asian (EAS) AF: 0.00 AC: 0 AN: 39604

South Asian (SAS) AF: 0.00 AC: 0 AN: 86134

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53352

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1109068

Other (OTH) AF: 0.00 AC: 0 AN: 60188

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000546

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	13
DANN	Uncertain	0.98
DEOGEN2	Benign	0.0076	T
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.70	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.0096	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	L
PhyloP100		0.70
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.015
Sift	Benign	0.034	D
Sift4G	Benign	0.32	T
Polyphen		0.040	B
Vest4		0.21
MutPred		0.31		Loss of glycosylation at T266 (P = 0.0324)
MVP		0.27
MPC		0.14
ClinPred		0.11	T
GERP RS		-0.86
Varity_R		0.045
gMVP		0.27
Mutation Taster		=90/10	polymorphism

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

Other links and lift over

hg19: chr22-38041390;