rs761550989

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001256715.2(DNAAF3):​c.640C>T​(p.Arg214Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000617 in 1,538,718 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000064 ( 0 hom. )

Consequence

DNAAF3
NM_001256715.2 missense

Scores

6
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.03

Publications

1 publications found
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 was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.22723895).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DNAAF3NM_001256715.2 linkc.640C>T p.Arg214Cys missense_variant Exon 6 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.640C>T p.Arg214Cys missense_variant Exon 6 of 12 1 NM_001256715.2 ENSP00000432046.3 Q8N9W5-1

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152160
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
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:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000146
AC:
2
AN:
136544
AF XY:
0.00
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:
0.0000389
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000642
AC:
89
AN:
1386558
Hom.:
0
Cov.:
32
AF XY:
0.0000614
AC XY:
42
AN XY:
684226
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31456
American (AMR)
AF:
0.00
AC:
0
AN:
35586
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25096
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35660
South Asian (SAS)
AF:
0.00
AC:
0
AN:
79076
European-Finnish (FIN)
AF:
0.0000504
AC:
2
AN:
39644
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4084
European-Non Finnish (NFE)
AF:
0.0000760
AC:
82
AN:
1078276
Other (OTH)
AF:
0.0000867
AC:
5
AN:
57680
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.499
Heterozygous variant carriers
0
7
14
21
28
35
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.0000394
AC:
6
AN:
152160
Hom.:
0
Cov.:
32
AF XY:
0.0000404
AC XY:
3
AN XY:
74330
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41434
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000588
AC:
4
AN:
68012
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000703
Hom.:
0
Bravo
AF:
0.0000340
ExAC
AF:
0.0000315
AC:
3

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Primary ciliary dyskinesia Uncertain:1
Sep 01, 2022
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 cysteine, which is neutral and slightly polar, at codon 282 of the DNAAF3 protein (p.Arg282Cys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. 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: 410294). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15"). 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
0.12
BayesDel_addAF
Benign
-0.011
T
BayesDel_noAF
Benign
-0.25
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Benign
0.0030
.;T;.;.
Eigen
Uncertain
0.34
Eigen_PC
Uncertain
0.35
FATHMM_MKL
Uncertain
0.80
D
LIST_S2
Benign
0.85
D;T;T;T
M_CAP
Benign
0.022
T
MetaRNN
Benign
0.23
T;T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
1.8
.;L;.;.
PhyloP100
2.0
PrimateAI
Uncertain
0.60
T
PROVEAN
Uncertain
-2.4
N;.;.;N
REVEL
Benign
0.15
Sift
Benign
0.056
T;.;.;T
Sift4G
Benign
0.065
T;T;T;T
Polyphen
1.0
.;D;.;.
Vest4
0.40
MVP
0.29
MPC
3.0
ClinPred
0.72
D
GERP RS
3.2
Varity_R
0.093
gMVP
0.60
Mutation Taster
=92/8
polymorphism

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

Other links and lift over

dbSNP: rs761550989; hg19: chr19-55673034; API