chr22-37757861-T-A

Position:

• chr22-37757861-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001039141.3(TRIOBP):​c.5936T>A​(p.Leu1979Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000214 in 1,400,122 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: TRIOBP NM_001039141.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.71

Genes affected

TRIOBP (HGNC:17009): (TRIO and F-actin binding protein) This gene encodes a protein with an N-terminal pleckstrin homology domain and a C-terminal coiled-coil region. The protein interacts with trio, which is involved with neural tissue development and controlling actin cytoskeleton organization, cell motility and cell growth. The protein also associates with F-actin and stabilizes F-actin structures. Mutations in this gene have been associated with a form of autosomal recessive nonsyndromic deafness. Multiple alternatively spliced transcript variants that would encode different isoforms have been found for this gene, however some transcripts may be subject to nonsense-mediated decay (NMD). [provided by RefSeq, Nov 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28125966).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRIOBP	NM_001039141.3	c.5936T>A	p.Leu1979Gln	missense_variant	16/24	ENST00000644935.1	NP_001034230.1
TRIOBP	NM_007032.5	c.797T>A	p.Leu266Gln	missense_variant	6/14		NP_008963.3
TRIOBP	NM_138632.2	c.797T>A	p.Leu266Gln	missense_variant	6/8		NP_619538.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRIOBP	ENST00000644935.1	c.5936T>A	p.Leu1979Gln	missense_variant	16/24		NM_001039141.3	ENSP00000496394	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000214 AC: 3 AN: 1400122 Hom.: 0 Cov.: 32 AF XY: 0.00000145 AC XY: 1 AN XY: 690852

Gnomad4 AFR exome AF: 0.00

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: 0.00000278

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.68
BayesDel_addAF	Uncertain	0.038	T
BayesDel_noAF	Benign	-0.18
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.046	T;T;.;.;.;T;T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.80	.;T;.;T;T;T;T
M_CAP	Benign	0.027	D
MetaRNN	Benign	0.28	T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.5	M;M;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.7	N;.;D;D;.;D;D
REVEL	Benign	0.18
Sift	Uncertain	0.0040	D;.;T;T;.;D;T
Sift4G	Uncertain	0.046	D;.;T;T;.;T;T
Polyphen		1.0	D;D;.;.;.;.;.
Vest4		0.63
MutPred		0.17		Gain of MoRF binding (P = 0.1176);Gain of MoRF binding (P = 0.1176);.;.;.;.;.;
MVP		0.43
MPC		0.57
ClinPred		0.94	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.42
gMVP		0.35

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: rs727503524; hg19: chr22-38153868;