Genetic Variant MDN1:p.Thr5338Ala (chr6-89650751-T-C) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_014611.3(MDN1):c.16012A>G(p.Thr5338Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,648 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MDN1
NM_014611.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.60

Variant links:

Genes affected

MDN1 (HGNC:18302): (midasin AAA ATPase 1) Predicted to enable ATP binding activity. Involved in ribosomal large subunit assembly. Located in cytosol; intermediate filament cytoskeleton; and nuclear lumen. [provided by Alliance of Genome Resources, Apr 2022]

MDN1 links:

MDN1-AS1 (HGNC:40837): (MDN1 antisense RNA 1)

MDN1-AS1 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=0.29542288).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MDN1	NM_014611.3 link	c.16012A>G	p.Thr5338Ala	missense_variant	Exon 96 of 102	ENST00000369393.8	NP_055426.1	Q9NU22
MDN1-AS1	NR_111915.1 link	n.105+12115T>C		intron_variant	Intron 1 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MDN1	ENST00000369393.8 link	c.16012A>G	p.Thr5338Ala	missense_variant	Exon 96 of 102	1	NM_014611.3	ENSP00000358400.3		Q9NU22

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

251048

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135678

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461648

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727144

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 16, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.16012A>G (p.T5338A) alteration is located in exon 96 (coding exon 96) of the MDN1 gene. This alteration results from a A to G substitution at nucleotide position 16012, causing the threonine (T) at amino acid position 5338 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

Benign

0.12

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Benign

-0.19

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Benign

0.28

T;T

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.93

D;.

M_CAP

Benign

0.031

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-0.83

MutationAssessor

Pathogenic

3.1

M;M

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.9

D;.

REVEL

Benign

0.26

Sift

Uncertain

0.0060

D;.

Polyphen

0.75

P;P

Vest4

0.45

MutPred

0.29

Loss of glycosylation at T5338 (P = 0.1028);Loss of glycosylation at T5338 (P = 0.1028);

MVP

0.25

MPC

0.15

ClinPred

0.93

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.26

gMVP

0.64

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