Genetic Variant DRC3:p.Arg192Pro (chr17-17992895-G-C) – 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_031294.4(DRC3):c.575G>C(p.Arg192Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,688 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R192C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DRC3
NM_031294.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.12

Publications

0 publications found

Variant links:

Genes affected

DRC3 (HGNC:25384): (dynein regulatory complex subunit 3) Located in axoneme. [provided by Alliance of Genome Resources, Apr 2022]

DRC3 links:

ATPAF2 (HGNC:18802): (ATP synthase mitochondrial F1 complex assembly factor 2) This gene encodes an assembly factor for the F(1) component of the mitochondrial ATP synthase. This protein binds specifically to the F1 alpha subunit and is thought to prevent this subunit from forming nonproductive homooligomers during enzyme assembly. This gene is located within the Smith-Magenis syndrome region on chromosome 17. An alternatively spliced transcript variant has been described, but its biological validity has not been determined. [provided by RefSeq, Jul 2008]

ATPAF2 Gene-Disease associations (from GenCC):

mitochondrial proton-transporting ATP synthase complex deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
mitochondrial complex V (ATP synthase) deficiency, nuclear type 1
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
mitochondrial disease
Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ATPAF2 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, 0.809

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031294.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DRC3	NM_031294.4	MANE Select	c.575G>C	p.Arg192Pro	missense	Exon 6 of 14	NP_112584.3
DRC3	NM_001130090.1		c.575G>C	p.Arg192Pro	missense	Exon 7 of 15	NP_001123562.1	B3KSC6
DRC3	NM_001130091.2		c.575G>C	p.Arg192Pro	missense	Exon 7 of 14	NP_001123563.1	Q9H069-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DRC3	ENST00000399187.6	TSL:1 MANE Select	c.575G>C	p.Arg192Pro	missense	Exon 6 of 14	ENSP00000382140.1	Q9H069-1
DRC3	ENST00000399182.5	TSL:1	c.575G>C	p.Arg192Pro	missense	Exon 6 of 13	ENSP00000382136.1	Q9H069-2
DRC3	ENST00000584166.5	TSL:5	c.575G>C	p.Arg192Pro	missense	Exon 7 of 14	ENSP00000462661.1	Q9H069-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461688

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727126

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

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:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111850

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

-0.080

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.047

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.053

MetaRNN

Pathogenic

0.81

MetaSVM

Benign

-0.62

PhyloP100

2.1

PrimateAI

Benign

0.34

PROVEAN

Benign

-2.1

REVEL

Benign

0.28

Sift

Uncertain

0.028

Sift4G

Uncertain

0.037

Polyphen

0.97

Vest4

0.46

MutPred

0.48

Loss of stability (P = 0.0482)

MVP

0.83

MPC

0.72

ClinPred

0.96

GERP RS

4.2

Varity_R

0.51

gMVP

0.77

Mutation Taster

=67/33

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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