NM_178452.6:c.1848G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_178452.6(DNAAF1):c.1848G>A(p.Ala616Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00918 in 1,613,946 control chromosomes in the GnomAD database, including 1,177 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.049 ( 594 hom., cov: 32)

Exomes 𝑓: 0.0050 ( 583 hom. )

Consequence

DNAAF1
NM_178452.6 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.548

Publications

2 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 -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 16-84176082-G-A is Benign according to our data. Variant chr16-84176082-G-A is described in ClinVar as [Benign]. Clinvar id is 226576.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.548 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.167 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAAF1	NM_178452.6 link	c.1848G>A	p.Ala616Ala	synonymous_variant	Exon 11 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.1848G>A	p.Ala616Ala	synonymous_variant	Exon 11 of 12	1	NM_178452.6	ENSP00000367815.5		Q8NEP3-1

Frequencies

GnomAD3 genomes

AF:

0.0491

AC:

7465

AN:

152020

Hom.:

593

Cov.:

show subpopulations

Gnomad AFR

AF:

0.171

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0189

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000771

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000544

Gnomad OTH

AF:

0.0349

GnomAD2 exomes

AF:

0.0129

AC:

3225

AN:

250906

AF XY:

0.00926

show subpopulations

Gnomad AFR exome

AF:

0.174

Gnomad AMR exome

AF:

0.00822

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000818

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000379

Gnomad OTH exome

AF:

0.00668

GnomAD4 exome

AF:

0.00502

AC:

7339

AN:

1461808

Hom.:

583

Cov.:

AF XY:

0.00434

AC XY:

3153

AN XY:

727196

show subpopulations

African (AFR)

AF:

0.174

AC:

5837

AN:

33472

American (AMR)

AF:

0.00959

AC:

429

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.000403

AC:

AN:

39698

South Asian (SAS)

AF:

0.000499

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00745

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000247

AC:

275

AN:

1111972

Other (OTH)

AF:

0.0115

AC:

695

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

401

802

1204

1605

2006

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

180

360

540

720

900

<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:

0.0492

AC:

7483

AN:

152138

Hom.:

594

Cov.:

AF XY:

0.0466

AC XY:

3464

AN XY:

74366

show subpopulations

African (AFR)

AF:

0.171

AC:

7074

AN:

41464

American (AMR)

AF:

0.0188

AC:

287

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000773

AC:

AN:

5176

South Asian (SAS)

AF:

0.00104

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000544

AC:

AN:

67992

Other (OTH)

AF:

0.0346

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

309

618

926

1235

1544

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

148

222

296

370

<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:

0.0284

Hom.:

211

Bravo

AF:

0.0558

Asia WGS

AF:

0.00924

AC:

AN:

3478

EpiCase

AF:

0.000436

EpiControl

AF:

0.000533

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Feb 21, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Ala616Ala in exon 11 of DNAAF1: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue and is not located wi thin the splice consensus sequence. It has been identified in 16.9% (745/4400) o f African American chromosomes from a broad population by the NHLBI Exome Sequen cing Project (http://evs.gs.washington.edu/EVS; dbSNP rs76108116). -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Primary ciliary dyskinesia

Benign:2

Jan 16, 2015

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 31, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Jan 11, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Primary ciliary dyskinesia 13

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

4.6

(source)

DANN

Benign

0.52

PhyloP100

0.55

PromoterAI

0.030

Neutral

(source)

Mutation Taster

=100/0

polymorphism (auto)

(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