Variant chr5-14143747-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_007118.4(TRIO):c.22G>A(p.Ala8Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000239 in 838,038 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000024 ( 0 hom. )

Consequence

TRIO
NM_007118.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.432

Variant links:

Genes affected

TRIO (HGNC:12303): (trio Rho guanine nucleotide exchange factor) This gene encodes a large protein that functions as a GDP to GTP exchange factor. This protein promotes the reorganization of the actin cytoskeleton, thereby playing a role in cell migration and growth. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

TRIO links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the TRIO gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 31 curated pathogenic missense variants (we use a threshold of 10). The gene has 80 curated benign missense variants. Gene score misZ: 5.3161 (above the threshold of 3.09). Trascript score misZ: 4.6722 (above the threshold of 3.09). GenCC associations: The gene is linked to intellectual disability, autosomal dominant 40, syndromic intellectual disability, intellectual developmental disorder, autosomal dominant 63, with macrocephaly, micrognathia-recurrent infections-behavioral abnormalities-mild intellectual disability syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.21700001).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRIO	NM_007118.4 link	c.22G>A	p.Ala8Thr	missense_variant	Exon 1 of 57	ENST00000344204.9	NP_009049.2	O75962-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TRIO	ENST00000344204.9 link	c.22G>A	p.Ala8Thr	missense_variant	Exon 1 of 57	1	NM_007118.4	ENSP00000339299.4	O75962-1
TRIO	ENST00000698541.1 link	c.22G>A	p.Ala8Thr	missense_variant	Exon 1 of 37			ENSP00000513786.1	A0A8V8TLX5
TRIO	ENST00000502816.1 link	n.46G>A		non_coding_transcript_exon_variant	Exon 1 of 5	2
TRIO	ENST00000505971.5 link	n.46G>A		non_coding_transcript_exon_variant	Exon 1 of 4	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000239

AC:

AN:

838038

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

387652

show subpopulations

Gnomad4 AFR exome

AF:

0.0000631

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000362

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Nov 21, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.22G>A (p.A8T) alteration is located in exon 1 (coding exon 1) of the TRIO gene. This alteration results from a G to A substitution at nucleotide position 22, causing the alanine (A) at amino acid position 8 to be replaced by a threonine (T). 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

0.14

BayesDel_addAF

Benign

-0.081

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.050

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.075

LIST_S2

Benign

0.37

M_CAP

Pathogenic

0.76

MetaRNN

Benign

0.22

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PrimateAI

Uncertain

0.79

PROVEAN

Benign

-0.18

REVEL

Benign

0.14

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.044

Polyphen

0.81

Vest4

0.16

MutPred

0.14

Gain of glycosylation at A8 (P = 0.0019);

MVP

0.45

MPC

0.81

ClinPred

0.29

GERP RS

1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

gMVP

0.15

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over