14-49625630-A-C

Position:

chr14-49625630-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_018139.3(DNAAF2):c.2426T>G(p.Met809Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,613,622 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 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

DNAAF2
NM_018139.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.467

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.39963555).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAAF2	NM_018139.3 linkuse as main transcript	c.2426T>G	p.Met809Arg	missense_variant	3/3	ENST00000298292.13	NP_060609.2	Q9NVR5-1
DNAAF2	NM_001083908.2 linkuse as main transcript	c.2282T>G	p.Met761Arg	missense_variant	2/2		NP_001077377.1	Q9NVR5-2
DNAAF2	NM_001378453.1 linkuse as main transcript	c.215T>G	p.Met72Arg	missense_variant	2/2		NP_001365382.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAAF2	ENST00000298292.13 linkuse as main transcript	c.2426T>G	p.Met809Arg	missense_variant	3/3	1	NM_018139.3	ENSP00000298292.8		Q9NVR5-1
DNAAF2	ENST00000406043.3 linkuse as main transcript	c.2282T>G	p.Met761Arg	missense_variant	2/2	1		ENSP00000384862.3		Q9NVR5-2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

250978

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135646

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461408

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

726992

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000279

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000113

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

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 06, 2022	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. 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 C0"). This variant has not been reported in the literature in individuals affected with DNAAF2-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.004%). This sequence change replaces methionine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 809 of the DNAAF2 protein (p.Met809Arg). -
Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Aug 11, 2022	The c.2426T>G (p.M809R) alteration is located in exon 3 (coding exon 3) of the DNAAF2 gene. This alteration results from a T to G substitution at nucleotide position 2426, causing the methionine (M) at amino acid position 809 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.095

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.035

T;.

Eigen

Uncertain

0.26

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.69

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.40

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

L;.

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-2.9

D;D

REVEL

Benign

0.10

Sift

Uncertain

0.027

D;D

Sift4G

Benign

0.081

T;T

Polyphen

0.93

P;D

Vest4

0.56

MutPred

0.39

Gain of disorder (P = 0.079);.;

MVP

0.44

MPC

1.3

ClinPred

0.80

GERP RS

4.8

Varity_R

0.34

gMVP

0.53

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over