chr11-59755615-C-T

Variant names:

• chr11-59755615-C-T
• rs766292057
• NM_004177.5:c.10C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_004177.5(STX3):​c.10C>T​(p.Arg4Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000416 in 1,442,472 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 (★★). Synonymous variant affecting the same amino acid position (i.e. R4R) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000042 (0 hom.)
• Consequence: STX3 NM_004177.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.517
• Publications: 0 publications found

Genes affected

STX3 (HGNC:11438): (syntaxin 3) The gene is a member of the syntaxin family. The encoded protein is targeted to the apical membrane of epithelial cells where it forms clusters and is important in establishing and maintaining polarity necessary for protein trafficking involving vesicle fusion and exocytosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2010]

STX3 Gene-Disease associations (from GenCC):

• diarrhea 12, with microvillus atrophy

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
• retinal dystrophy and microvillus inclusion disease

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
• microvillus inclusion disease

  Inheritance: AR Classification: MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.421569).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004177.5. 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
	STX3	NM_004177.5	MANE Select	c.10C>T	p.Arg4Cys	missense	Exon 1 of 11	NP_004168.1	Q13277-1
	STX3	NM_001440522.1		c.10C>T	p.Arg4Cys	missense	Exon 1 of 11	NP_001427451.1
	STX3	NM_001440523.1		c.10C>T	p.Arg4Cys	missense	Exon 1 of 11	NP_001427452.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STX3	ENST00000337979.9	TSL:1 MANE Select	c.10C>T	p.Arg4Cys	missense	Exon 1 of 11	ENSP00000338562.4	Q13277-1
	STX3	ENST00000530221.2	TSL:5	c.10C>T	p.Arg4Cys	missense	Exon 1 of 11	ENSP00000434836.2
	STX3	ENST00000887353.1		c.10C>T	p.Arg4Cys	missense	Exon 2 of 12	ENSP00000557412.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000876 AC: 2 AN: 228314 AF XY: 0.00000797

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000587

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000416 AC: 6 AN: 1442472 Hom.: 0 Cov.: 30 AF XY: 0.00000557 AC XY: 4 AN XY: 718230

African (AFR) AF: 0.0000306 AC: 1 AN: 32714

American (AMR) AF: 0.00 AC: 0 AN: 44420

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25918

East Asian (EAS) AF: 0.0000778 AC: 3 AN: 38558

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86032

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40600

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5712

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1108536

Other (OTH) AF: 0.00 AC: 0 AN: 59982

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000825 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Benign	-0.026	T
BayesDel_noAF	Benign	-0.27
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.35	T
Eigen	Benign	0.058
Eigen_PC	Benign	-0.0081
FATHMM_MKL	Benign	0.13	N
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.60	D
MetaRNN	Benign	0.42	T
MetaSVM	Benign	-0.87	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		0.52
PrimateAI	Pathogenic	0.84	D
PROVEAN	Uncertain	-4.3	D
REVEL	Benign	0.25
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.38
MutPred		0.59		Loss of MoRF binding (P = 0.0126)
MVP		0.51
MPC		0.45
ClinPred		0.98	D
GERP RS		2.7
PromoterAI		-0.044	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.41
gMVP		0.77
Mutation Taster		=73/27	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

dbSNP: rs766292057; hg19: chr11-59523088;