3-185922047-G-A

Position:

• chr3-185922047-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 6P and 1B. PM1 PM2 PP2 PP3 BP4

The NM_004593.3(TRA2B):​c.602C>T​(p.Thr201Met) variant causes a missense change involving the alteration of a conserved nucleotide. 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: 33)
• Consequence: TRA2B NM_004593.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 10.0

Genes affected

TRA2B (HGNC:10781): (transformer 2 beta homolog) This gene encodes a nuclear protein which functions as sequence-specific serine/arginine splicing factor which plays a role in mRNA processing, splicing patterns, and gene expression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a modified_residue Phosphothreonine (size 0) in uniprot entity TRA2B_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TRA2B. . Gene score misZ 3.4968 (greater than the threshold 3.09). Trascript score misZ 4.2084 (greater than threshold 3.09). GenCC has associacion of gene with complex neurodevelopmental disorder.
• PP3: Multiple lines of computational evidence support a deleterious effect 8: AlphaMissense, Cadd, Dann, Eigen, FATHMM_MKL, phyloP100way_vertebrate, PrimateAI, PROVEAN [when max_spliceai, MetaRNN, MutationTaster was below the threshold]
• BP4: Computational evidence support a benign effect (MetaRNN=0.41459885).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRA2B	NM_004593.3	c.602C>T	p.Thr201Met	missense_variant	5/9	ENST00000453386.7
TRA2B	NM_001243879.2	c.302C>T	p.Thr101Met	missense_variant	4/8
TRA2B	XM_047448717.1	c.302C>T	p.Thr101Met	missense_variant	5/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRA2B	ENST00000453386.7	c.602C>T	p.Thr201Met	missense_variant	5/9	1	NM_004593.3	P2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 26, 2021

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; Variants in candidate genes are classified as variants of uncertain significance in accordance with ACMG guidelines (Richards et al., 2015) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.48	T;.
Eigen	Pathogenic	0.96
Eigen_PC	Pathogenic	0.96
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Uncertain	0.091	D
MetaRNN	Benign	0.41	T;T
MetaSVM	Uncertain	0.17	D
MutationAssessor	Uncertain	2.3	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-5.8	D;D
REVEL	Uncertain	0.37
Sift	Uncertain	0.0010	D;D
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;.
Vest4		0.51
MutPred		0.22		Loss of phosphorylation at T201 (P = 0.0014);.;
MVP		0.54
MPC		2.7
ClinPred		0.99	D
GERP RS		6.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.71
gMVP		0.72

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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: chr3-185639835; COSMIC: COSV52026510; COSMIC: COSV52026510;