16-84170327-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_178452.6(DNAAF1):c.1499C>G(p.Pro500Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000143 in 1,611,858 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00064 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000091 ( 1 hom. )

Consequence

DNAAF1
NM_178452.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 1.37

Publications

0 publications found

Variant links:

Genes affected

DNAAF1 (HGNC:30539): (dynein axonemal assembly factor 1) The protein encoded by this gene is cilium-specific and is required for the stability of the ciliary architecture. It is involved in the regulation of microtubule-based cilia and actin-based brush border microvilli. Mutations in this gene are associated with primary ciliary dyskinesia-13. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

DNAAF1 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 13
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DNAAF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.010858774).

BP6

Variant 16-84170327-C-G is Benign according to our data. Variant chr16-84170327-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 228601.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000637 (97/152298) while in subpopulation AFR AF = 0.00231 (96/41572). AF 95% confidence interval is 0.00194. There are 0 homozygotes in GnomAd4. There are 46 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAAF1	NM_178452.6 link	c.1499C>G	p.Pro500Arg	missense_variant	Exon 8 of 12	ENST00000378553.10	NP_848547.4	Q8NEP3-1A0A140VJN4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAAF1	ENST00000378553.10 link	c.1499C>G	p.Pro500Arg	missense_variant	Exon 8 of 12	1	NM_178452.6	ENSP00000367815.5		Q8NEP3-1

Frequencies

GnomAD3 genomes

AF:

0.000637

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00232

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD2 exomes

AF:

0.000181

AC:

AN:

248722

AF XY:

0.0000962

show subpopulations

Gnomad AFR exome

AF:

0.00291

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000911

AC:

133

AN:

1459560

Hom.:

Cov.:

AF XY:

0.0000702

AC XY:

AN XY:

726174

show subpopulations

African (AFR)

AF:

0.00359

AC:

120

AN:

33448

American (AMR)

AF:

0.0000227

AC:

AN:

44100

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26076

East Asian (EAS)

AF:

0.00

AC:

AN:

39554

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86120

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53126

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111136

Other (OTH)

AF:

0.000166

AC:

AN:

60234

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

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:

0.000637

AC:

AN:

152298

Hom.:

Cov.:

AF XY:

0.000618

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.00231

AC:

AN:

41572

American (AMR)

AF:

0.0000654

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

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:

0.000113

Hom.:

Bravo

AF:

0.000805

ESP6500AA

AF:

0.00137

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000223

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:3

Dec 07, 2019

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Jan 11, 2018

UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

Feb 15, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant classified as Uncertain Significance - Favor Benign. The p.Pro500Arg var iant in DNAAF1 has not been previously reported in individuals with pulmonary di sease, but has been identified in 0.25% (24/9432) of African chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs1388 38276). Computational prediction tools and conservation analysis suggest that th e p.Pro500Arg variant may not impact the protein, though this information is not predictive enough to rule out pathogenicity. In summary, while the clinical si gnificance of the p.Pro500Arg variant is uncertain, its frequency suggests that it is more likely to be benign. -

not provided

Uncertain:1

Dec 27, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.61

CADD

Benign

7.1

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.0065

Eigen

Benign

-0.91

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.046

LIST_S2

Benign

0.37

M_CAP

Benign

0.0028

MetaRNN

Benign

0.011

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

PhyloP100

1.4

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.25

REVEL

Benign

0.046

Sift

Benign

0.40

Sift4G

Benign

0.64

Polyphen

0.38

Vest4

0.25

MVP

0.17

MPC

0.025

ClinPred

0.022

GERP RS

-0.83

Varity_R

0.033

gMVP

0.058

Mutation Taster

=95/5

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over