Variant 2-130182354-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_025029.5(MZT2B):c.72G>T(p.Lys24Asn) 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: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

MZT2B
NM_025029.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.857

Variant links:

Genes affected

MZT2B (HGNC:25886): (mitotic spindle organizing protein 2B) Located in cytosol; microtubule cytoskeleton; and nucleoplasm. Part of gamma-tubulin large complex. [provided by Alliance of Genome Resources, Apr 2022]

MZT2B links:

SMPD4 (HGNC:32949): (sphingomyelin phosphodiesterase 4) The protein encoded by this gene is a sphingomyelinase that catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide. This gene is activated by DNA damage, cellular stress, and tumor necrosis factor, but it is downregulated by wild-type p53. The encoded protein localizes to the endoplasmic reticulum and Golgi network. [provided by RefSeq, Mar 2017]

SMPD4 links:

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ACMG classification

Classification made for transcript

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=0.4034601).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MZT2B	NM_025029.5 linkuse as main transcript	c.72G>T	p.Lys24Asn	missense_variant	1/3	ENST00000281871.11	NP_079305.2	Q6NZ67

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MZT2B	ENST00000281871.11 linkuse as main transcript	c.72G>T	p.Lys24Asn	missense_variant	1/3	1	NM_025029.5	ENSP00000281871.7		Q6NZ67

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1385180

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

683838

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Dec 20, 2023

The c.72G>T (p.K24N) alteration is located in exon 1 (coding exon 1) of the MZT2B gene. This alteration results from a G to T substitution at nucleotide position 72, causing the lysine (K) at amino acid position 24 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

Pathogenic

0.88

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.057

T;.;.

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Benign

0.45

LIST_S2

Benign

0.79

T;T;T

M_CAP

Pathogenic

0.33

MetaRNN

Benign

0.40

T;T;T

MetaSVM

Benign

-0.72

MutationAssessor

Uncertain

2.6

M;.;.

PrimateAI

Pathogenic

0.96

PROVEAN

Benign

-2.2

N;N;D

REVEL

Benign

0.17

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.018

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.28

MutPred

0.47

Loss of methylation at K24 (P = 0.0258);Loss of methylation at K24 (P = 0.0258);.;

MVP

0.082

MPC

1.4

ClinPred

0.96

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.66

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over