rs77322382

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001256715.2(DNAAF3):​c.1285C>T​(p.Arg429Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000163 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

DNAAF3
NM_001256715.2 missense

Scores

1
5
13

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.23
Variant links:
Genes affected
DNAAF3 (HGNC:30492): (dynein axonemal assembly factor 3) The protein encoded by this gene is required for the assembly of axonemal inner and outer dynein arms and plays a role in assembling dynein complexes for transport into cilia. Defects in this gene are a cause of primary ciliary dyskinesia type 2 (CILD2). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]
DNAAF3-AS1 (HGNC:55292): (DNAAF3 antisense RNA 1)

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.12446955).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DNAAF3NM_001256715.2 linkc.1285C>T p.Arg429Trp missense_variant Exon 12 of 12 ENST00000524407.7 NP_001243644.1 Q8N9W5-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DNAAF3ENST00000524407.7 linkc.1285C>T p.Arg429Trp missense_variant Exon 12 of 12 1 NM_001256715.2 ENSP00000432046.3 Q8N9W5-1
ENSG00000267110ENST00000587871.1 linkn.268C>T non_coding_transcript_exon_variant Exon 4 of 9 5 ENSP00000473050.1 M0R381

Frequencies

GnomAD3 genomes
AF:
0.000309
AC:
47
AN:
152206
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00144
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000470
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000529
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000209
AC:
52
AN:
249366
Hom.:
0
AF XY:
0.000133
AC XY:
18
AN XY:
135304
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000795
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000232
Gnomad NFE exome
AF:
0.000345
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000148
AC:
216
AN:
1461808
Hom.:
0
Cov.:
31
AF XY:
0.000168
AC XY:
122
AN XY:
727214
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000447
Gnomad4 ASJ exome
AF:
0.000574
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.000206
Gnomad4 NFE exome
AF:
0.000160
Gnomad4 OTH exome
AF:
0.000116
GnomAD4 genome
AF:
0.000309
AC:
47
AN:
152206
Hom.:
0
Cov.:
33
AF XY:
0.000323
AC XY:
24
AN XY:
74366
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00144
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.000470
Gnomad4 NFE
AF:
0.000529
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.000551
Hom.:
0
Bravo
AF:
0.000181
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000721
AC:
6
ExAC
AF:
0.000298
AC:
36
EpiCase
AF:
0.000382
EpiControl
AF:
0.00

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Primary ciliary dyskinesia Uncertain:2
Sep 18, 2017
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.R496W variant (also known as c.1486C>T), located in coding exon 12 of the DNAAF3 gene, results from a C to T substitution at nucleotide position 1486. The arginine at codon 496 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Dec 11, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 496 of the DNAAF3 protein (p.Arg496Trp). This variant is present in population databases (rs77322382, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with DNAAF3-related conditions. ClinVar contains an entry for this variant (Variation ID: 582989). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on DNAAF3 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.23
CADD
Benign
23
DANN
Uncertain
1.0
DEOGEN2
Benign
0.033
.;T;.;.
Eigen
Benign
-0.12
Eigen_PC
Benign
-0.32
FATHMM_MKL
Benign
0.074
N
LIST_S2
Uncertain
0.86
D;D;D;D
M_CAP
Benign
0.023
T
MetaRNN
Benign
0.12
T;T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Uncertain
2.7
.;M;.;.
PrimateAI
Benign
0.40
T
PROVEAN
Pathogenic
-5.2
D;.;.;D
REVEL
Benign
0.12
Sift
Uncertain
0.0040
D;.;.;D
Sift4G
Uncertain
0.010
D;D;D;D
Polyphen
0.99
.;D;.;.
Vest4
0.44
MVP
0.23
MPC
0.85
ClinPred
0.29
T
GERP RS
3.3
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.11
gMVP
0.69

Splicing

Name
Calibrated prediction
Score
Prediction
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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs77322382; hg19: chr19-55670771; API