Variant 21-32278825-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018944.3(MIS18A):c.190A>G(p.Met64Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000505 in 1,603,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

MIS18A
NM_018944.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.598

Variant links:

Genes affected

MIS18A (HGNC:1286): (MIS18 kinetochore protein A) Enables identical protein binding activity. Predicted to be involved in CENP-A containing chromatin assembly and chromosome segregation. Predicted to act upstream of or within regulation of DNA methylation. Located in cytosol and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MIS18A links:

MIS18A-AS1 (HGNC:40106): (MIS18A antisense RNA 1)

MIS18A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.011205614).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
MIS18A	NM_018944.3 linkuse as main transcript	c.190A>G	p.Met64Val	missense_variant	1/5	ENST00000290130.4	NP_061817.1
MIS18A	XM_017028400.2 linkuse as main transcript	c.190A>G	p.Met64Val	missense_variant	1/5		XP_016883889.1
MIS18A	XM_017028401.2 linkuse as main transcript	c.190A>G	p.Met64Val	missense_variant	1/5		XP_016883890.1
MIS18A	XR_002958619.2 linkuse as main transcript	n.225A>G		non_coding_transcript_exon_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MIS18A	ENST00000290130.4 linkuse as main transcript	c.190A>G	p.Met64Val	missense_variant	1/5	1	NM_018944.3	ENSP00000290130	P1
MIS18A-AS1	ENST00000453549.1 linkuse as main transcript	n.373+294T>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.000177

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000603

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000963

AC:

AN:

228548

Hom.:

AF XY:

0.0000803

AC XY:

AN XY:

124604

show subpopulations

Gnomad AFR exome

AF:

0.000919

Gnomad AMR exome

AF:

0.0000309

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000783

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000372

AC:

AN:

1450824

Hom.:

Cov.:

AF XY:

0.0000388

AC XY:

AN XY:

721212

show subpopulations

Gnomad4 AFR exome

AF:

0.00123

Gnomad4 AMR exome

AF:

0.0000697

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:

0.00000722

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.000177

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74514

show subpopulations

Gnomad4 AFR

AF:

0.000601

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000103

Hom.:

Bravo

AF:

0.000340

ESP6500AA

AF:

0.000909

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000907

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 17, 2023

The c.190A>G (p.M64V) alteration is located in exon 1 (coding exon 1) of the MIS18A gene. This alteration results from a A to G substitution at nucleotide position 190, causing the methionine (M) at amino acid position 64 to be replaced by a valine (V). 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

0.062

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.90

DANN

Benign

0.47

DEOGEN2

Benign

0.022

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.0017

LIST_S2

Benign

0.24

M_CAP

Benign

0.0049

MetaRNN

Benign

0.011

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

MutationTaster

Benign

1.0

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.24

REVEL

Benign

0.012

Sift

Benign

0.41

Sift4G

Benign

0.32

Polyphen

0.0

Vest4

0.024

MVP

0.14

MPC

0.25

ClinPred

0.015

GERP RS

-5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

gMVP

0.18

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over