Genetic Variant DMAC2:p.Ile147Thr (chr19-41432321-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001167868.2(DMAC2):c.539T>C(p.Ile180Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000743 in 1,614,042 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I180N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

DMAC2
NM_001167868.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.160

Publications

0 publications found

Variant links:

Genes affected

DMAC2 (HGNC:25496): (distal membrane arm assembly component 2) Involved in mitochondrial respiratory chain complex I assembly. Colocalizes with mitochondrial respiratory chain complex I. [provided by Alliance of Genome Resources, Apr 2022]

DMAC2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.029880822).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001167868.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DMAC2	NM_018035.3	MANE Select	c.684T>C	p.Asn228Asn	synonymous	Exon 6 of 6	NP_060505.2	Q9NW81-1
DMAC2	NM_001167868.2		c.539T>C	p.Ile180Thr	missense	Exon 5 of 5	NP_001161340.1	Q9NW81-3
DMAC2	NM_001167869.2		c.521T>C	p.Ile174Thr	missense	Exon 5 of 5	NP_001161341.1	Q9NW81-6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DMAC2	ENST00000438807.7	TSL:1	c.440T>C	p.Ile147Thr	missense	Exon 4 of 4	ENSP00000397413.3	Q9NW81-2
DMAC2	ENST00000221943.14	TSL:2 MANE Select	c.684T>C	p.Asn228Asn	synonymous	Exon 6 of 6	ENSP00000221943.8	Q9NW81-1
DMAC2	ENST00000301183.15	TSL:2	c.539T>C	p.Ile180Thr	missense	Exon 5 of 5	ENSP00000301183.9	Q9NW81-3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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

GnomAD4 exome

AF:

0.00000752

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112002

Other (OTH)

AF:

0.0000993

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.516

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74336

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.49

CADD

Benign

2.8

(source)

DANN

Benign

0.62

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.023

LIST_S2

Benign

0.36

M_CAP

Benign

0.0019

MetaRNN

Benign

0.030

MetaSVM

Benign

-1.1

PhyloP100

-0.16

PROVEAN

Benign

0.11

REVEL

Benign

0.0060

Sift

Benign

0.18

Sift4G

Benign

0.45

Polyphen

0.0010

Vest4

0.15

MutPred

0.34

Gain of disorder (P = 0.019)

MVP

0.12

ClinPred

0.019

GERP RS

-0.77

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=96/4

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over