1-155611225-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_018116.4(MSTO1):c.300G>C(p.Lys100Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 20)
  • Exomes 𝑓: 0.0000014 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSTO1 NM_018116.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.22

Genes affected

MSTO1 (HGNC:29678): (misato mitochondrial distribution and morphology regulator 1) Involved in mitochondrion distribution. Located in cytosol and mitochondrial outer membrane. [provided by Alliance of Genome Resources, Apr 2022]

LOC105371452 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10111454).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MSTO1	NM_018116.4	c.300G>C	p.Lys100Asn	missense_variant	4/14	ENST00000245564.8
LOC105371452	XR_922171.2	n.77-1333C>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MSTO1	ENST00000245564.8	c.300G>C	p.Lys100Asn	missense_variant	4/14	1	NM_018116.4	P1

Frequencies

GnomAD3 genomes Cov.: 20

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000137 AC: 2 AN: 1460144 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726380

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 20

Bravo AF: 0.00000378

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

Oct 05, 2023

The c.300G>C (p.K100N) alteration is located in exon 4 (coding exon 4) of the MSTO1 gene. This alteration results from a G to C substitution at nucleotide position 300, causing the lysine (K) at amino acid position 100 to be replaced by an asparagine (N). 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	0.19
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
Cadd	Benign	17
Dann	Benign	0.96
Eigen	Benign	-0.86
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.48	N
LIST_S2	Benign	0.62	T;T;T
M_CAP	Benign	0.0033	T
MetaRNN	Benign	0.10	T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	D;N;N;N
PrimateAI	Uncertain	0.61	T
Polyphen		0.0040	.;B;.
Vest4		0.15, 0.24
MutPred		0.51		Loss of ubiquitination at K100 (P = 0.0167);Loss of ubiquitination at K100 (P = 0.0167);Loss of ubiquitination at K100 (P = 0.0167);
MVP		0.095
MPC		2.1
ClinPred		0.11	T
GERP RS		0.053
Varity_R		0.078
gMVP		0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1673888548; hg19: chr1-155581016;