8-124553423-T-C

Position:

• chr8-124553423-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014751.6(MTSS1):​c.1837A>G​(p.Thr613Ala) variant causes a missense change involving the alteration of a non-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: 32)
• Consequence: MTSS1 NM_014751.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.66

Genes affected

MTSS1 (HGNC:20443): (MTSS I-BAR domain containing 1) Enables actin monomer binding activity; identical protein binding activity; and signaling receptor binding activity. Predicted to be involved in cellular response to fluid shear stress; negative regulation of epithelial cell proliferation; and urogenital system development. Predicted to act upstream of or within several processes, including actin filament polymerization; adherens junction maintenance; and magnesium ion homeostasis. Located in actin cytoskeleton. [provided by Alliance of Genome Resources, Apr 2022]

NDUFB9 (HGNC:7704): (NADH:ubiquinone oxidoreductase subunit B9) The protein encoded by this gene is a subunit of the mitochondrial oxidative phosphorylation complex I (nicotinamide adenine dinucleotide: ubiquinone oxidoreductase). Complex I is localized to the inner mitochondrial membrane and functions to dehydrogenate nicotinamide adenine dinucleotide and to shuttle electrons to coenzyme Q. Complex I deficiency is the most common defect found in oxidative phosphorylation disorders and results in a range of conditions, including lethal neonatal disease, hypertrophic cardiomyopathy, liver disease, and adult-onset neurodegenerative disorders. Pseudogenes of this gene are found on chromosomes five, seven and eight. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25441378).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTSS1	NM_014751.6	c.1837A>G	p.Thr613Ala	missense_variant	14/14	ENST00000518547.6	NP_055566.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTSS1	ENST00000518547.6	c.1837A>G	p.Thr613Ala	missense_variant	14/14	1	NM_014751.6	ENSP00000429064	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 13, 2022

The c.1837A>G (p.T613A) alteration is located in exon 14 (coding exon 14) of the MTSS1 gene. This alteration results from a A to G substitution at nucleotide position 1837, causing the threonine (T) at amino acid position 613 to be replaced by an alanine (A). 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	Uncertain	0.55
BayesDel_addAF	Benign	0.0097	T
BayesDel_noAF	Benign	-0.22
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.45	.;T;.;.;T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.95	D;D;D;D;D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.25	T;T;T;T;T
MetaSVM	Benign	-0.86	T
MutationAssessor	Uncertain	2.4	.;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-1.9	N;N;N;N;N
REVEL	Benign	0.16
Sift	Benign	0.033	D;D;D;D;D
Sift4G	Benign	0.39	T;T;T;T;T
Polyphen		0.96	D;P;.;D;D
Vest4		0.35
MutPred		0.20		.;Loss of glycosylation at T613 (P = 0.0028);.;.;.;
MVP		0.60
MPC		1.1
ClinPred		0.88	D
GERP RS		5.9
Varity_R		0.21
gMVP		0.66

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.

Other links and lift over

hg19: chr8-125565664;