Genetic Variant MIEF1:p.Arg144Trp (chr22-39512339-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_019008.6(MIEF1):c.430C>T(p.Arg144Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000229 in 1,614,144 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R144P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

MIEF1
NM_019008.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.82

Variant links:

Genes affected

MIEF1 (HGNC:25979): (mitochondrial elongation factor 1) Enables ADP binding activity; GDP binding activity; and identical protein binding activity. Involved in several processes, including positive regulation of mitochondrial fission; positive regulation of mitochondrial translation; and positive regulation of protein targeting to membrane. Located in mitochondrial matrix and mitochondrial outer membrane. Colocalizes with mitochondrial large ribosomal subunit. [provided by Alliance of Genome Resources, Apr 2022]

MIEF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 33 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MIEF1	NM_019008.6 link	c.430C>T	p.Arg144Trp	missense_variant	Exon 5 of 6	ENST00000325301.7	NP_061881.2	Q9NQG6-1A0A024R1L3
MIEF1	NM_001304564.2 link	c.430C>T	p.Arg144Trp	missense_variant	Exon 5 of 7		NP_001291493.1	Q9NQG6B0QY95Q9H0J7
MIEF1	NR_130789.2 link	n.831C>T		non_coding_transcript_exon_variant	Exon 5 of 6
MIEF1	NR_130790.2 link	n.981C>T		non_coding_transcript_exon_variant	Exon 6 of 7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MIEF1	ENST00000325301.7 link	c.430C>T	p.Arg144Trp	missense_variant	Exon 5 of 6	1	NM_019008.6	ENSP00000327124.2		Q9NQG6-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152278

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000964

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000278

AC:

AN:

251378

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135898

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

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:

0.0000226

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

727228

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.0000964

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 03, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.430C>T (p.R144W) alteration is located in exon 5 (coding exon 3) of the MIEF1 gene. This alteration results from a C to T substitution at nucleotide position 430, causing the arginine (R) at amino acid position 144 to be replaced by a tryptophan (W). 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

0.16

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.34

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.18

T;T;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

D;.;D

M_CAP

Benign

0.011

MetaRNN

Uncertain

0.58

D;D;D

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.0

.;M;M

PrimateAI

Uncertain

0.51

PROVEAN

Uncertain

-3.6

D;D;D

REVEL

Benign

0.16

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.0090

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.66

MutPred

0.43

Loss of disorder (P = 0.0079);Loss of disorder (P = 0.0079);Loss of disorder (P = 0.0079);

MVP

0.42

MPC

0.81

ClinPred

0.59

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.63

gMVP

0.34

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