Genetic Variant NM_001039211.3:c.221C>T (chr1-1452433-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001039211.3(ATAD3C):c.221C>T(p.Thr74Met) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000018 in 1,613,568 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. 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. T74R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 1 hom. )

Consequence

ATAD3C
NM_001039211.3 missense, splice_region

Scores

Splicing: ADA: 0.003171

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.13

Publications

3 publications found

Variant links:

Genes affected

ATAD3C (HGNC:32151): (ATPase family AAA domain containing 3C) Predicted to enable zinc ion binding activity. Predicted to be involved in mitochondrion organization. Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

ATAD3C Gene-Disease associations (from GenCC):

pontocerebellar hypoplasia, hypotonia, and respiratory insufficiency syndrome, neonatal lethal
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ATAD3C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.787

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001039211.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATAD3C	NM_001039211.3	MANE Select	c.221C>T	p.Thr74Met	missense splice_region	Exon 3 of 12	NP_001034300.2	Q5T2N8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATAD3C	ENST00000378785.7	TSL:2 MANE Select	c.221C>T	p.Thr74Met	missense splice_region	Exon 3 of 12	ENSP00000368062.2	Q5T2N8
	ATAD3C	ENST00000475091.2	TSL:5	c.221C>T	p.Thr74Met	missense splice_region	Exon 4 of 6	ENSP00000464661.1	J3QSF3

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152028

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000263

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:

0.00

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251346

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461540

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727058

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.0000224

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86204

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000207

AC:

AN:

1111762

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.0000329

AC:

AN:

152028

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74254

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41392

American (AMR)

AF:

0.000263

AC:

AN:

15226

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5204

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67988

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.545

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Uncertain

-0.010

CADD

Pathogenic

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.056

Eigen

Uncertain

0.37

Eigen_PC

Benign

0.19

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.97

M_CAP

Uncertain

0.097

MetaRNN

Uncertain

0.69

MetaSVM

Pathogenic

0.95

MutationAssessor

Uncertain

2.6

PhyloP100

6.1

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-2.9

REVEL

Pathogenic

0.68

Sift

Uncertain

0.018

Sift4G

Uncertain

0.041

Polyphen

1.0

Vest4

0.81

MutPred

0.38

Loss of loop (P = 0.0288)

MVP

0.91

MPC

0.62

ClinPred

0.91

GERP RS

2.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.69

gMVP

0.27

Mutation Taster

=68/32

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0032

dbscSNV1_RF

Benign

0.074

SpliceAI score (max)

0.030

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