rs1554092927

Positions:

• chr5-14504424-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_007118.4(TRIO):​c.8443C>G​(p.Gln2815Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TRIO NM_007118.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.54

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TRIO. . Gene score misZ 5.3161 (greater than the threshold 3.09). Trascript score misZ 4.6722 (greater than threshold 3.09). GenCC has associacion of gene with 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRIO	NM_007118.4	c.8443C>G	p.Gln2815Glu	missense_variant	55/57	ENST00000344204.9	NP_009049.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRIO	ENST00000344204.9	c.8443C>G	p.Gln2815Glu	missense_variant	55/57	1	NM_007118.4	ENSP00000339299	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 15, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.062	T;.
Eigen	Benign	-0.034
Eigen_PC	Benign	0.13
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.90	D;D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.43	T;T
MetaSVM	Benign	-0.87	T
MutationAssessor	Benign	-1.0	N;.
MutationTaster	Benign	1.0	D;D;D;N
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-0.73	N;N
REVEL	Uncertain	0.36
Sift	Benign	0.38	T;T
Sift4G	Benign	0.27	T;T
Polyphen		0.77	P;.
Vest4		0.60
MutPred		0.46		Gain of sheet (P = 0.039);.;
MVP		0.81
MPC		0.32
ClinPred		0.89	D
GERP RS		4.5
Varity_R		0.27
gMVP		0.41

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

LitVar

Other links and lift over

dbSNP: rs1554092927; hg19: chr5-14504533;