Genetic Variant DNAAF2:p.Ser8Trp (chr14-49635127-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_018139.3(DNAAF2):c.23C>G(p.Ser8Trp) variant causes a missense change. The variant allele was found at a frequency of 0.00000256 in 1,563,724 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

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

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

DNAAF2
NM_018139.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.87

Publications

8 publications found

Variant links:

Genes affected

DNAAF2 (HGNC:20188): (dynein axonemal assembly factor 2) This gene encodes a highly conserved protein involved in the preassembly of dynein arm complexes which power cilia. These complexes are found in some cilia and are assembled in the cytoplasm prior to transport for cilia formation. Mutations in this gene have been associated with primary ciliary dyskinesia. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Oct 2009]

DNAAF2 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 10
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DNAAF2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018139.3. 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
	DNAAF2	NM_018139.3	MANE Select	c.23C>G	p.Ser8Trp	missense	Exon 1 of 3	NP_060609.2	Q9NVR5-1
	DNAAF2	NM_001083908.2		c.23C>G	p.Ser8Trp	missense	Exon 1 of 2	NP_001077377.1	Q9NVR5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAAF2	ENST00000298292.13	TSL:1 MANE Select	c.23C>G	p.Ser8Trp	missense	Exon 1 of 3	ENSP00000298292.8	Q9NVR5-1
	DNAAF2	ENST00000406043.3	TSL:1	c.23C>G	p.Ser8Trp	missense	Exon 1 of 2	ENSP00000384862.3	Q9NVR5-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000609

AC:

AN:

164330

AF XY:

0.0000112

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000154

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000213

AC:

AN:

1411476

Hom.:

Cov.:

AF XY:

0.00000430

AC XY:

AN XY:

697650

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32170

American (AMR)

AF:

0.00

AC:

AN:

37328

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25338

East Asian (EAS)

AF:

0.00

AC:

AN:

36634

South Asian (SAS)

AF:

0.00

AC:

AN:

80194

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48756

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5670

European-Non Finnish (NFE)

AF:

0.00000276

AC:

AN:

1086896

Other (OTH)

AF:

0.00

AC:

AN:

58490

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41466

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68044

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Uncertain

0.016

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.018

MetaRNN

Uncertain

0.62

MetaSVM

Benign

-1.1

MutationAssessor

Benign

2.0

PhyloP100

4.9

PrimateAI

Uncertain

0.52

PROVEAN

Uncertain

-3.7

REVEL

Benign

0.27

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.50

MVP

0.73

MPC

1.7

ClinPred

0.99

GERP RS

5.3

PromoterAI

0.00090

Neutral

(source)

Varity_R

0.37

gMVP

0.41

Mutation Taster

=98/2

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