14-49634474-A-G

Position:

chr14-49634474-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_018139.3(DNAAF2):c.676T>C(p.Tyr226His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000201 in 1,580,158 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 4 hom. )

Consequence

DNAAF2
NM_018139.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 2.11

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008570403).

BP6

Variant 14-49634474-A-G is Benign according to our data. Variant chr14-49634474-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 220954.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000986 (15/152176) while in subpopulation SAS AF= 0.00249 (12/4828). AF 95% confidence interval is 0.00143. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAAF2	NM_018139.3 linkuse as main transcript	c.676T>C	p.Tyr226His	missense_variant	1/3	ENST00000298292.13	NP_060609.2
DNAAF2	NM_001083908.2 linkuse as main transcript	c.676T>C	p.Tyr226His	missense_variant	1/2		NP_001077377.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAAF2	ENST00000298292.13 linkuse as main transcript	c.676T>C	p.Tyr226His	missense_variant	1/3	1	NM_018139.3	ENSP00000298292	P2	Q9NVR5-1
DNAAF2	ENST00000406043.3 linkuse as main transcript	c.676T>C	p.Tyr226His	missense_variant	1/2	1		ENSP00000384862	A2	Q9NVR5-2

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00248

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000544

AC:

107

AN:

196838

Hom.:

AF XY:

0.000739

AC XY:

AN XY:

109678

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000100

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00344

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000576

Gnomad OTH exome

AF:

0.000390

GnomAD4 exome

AF:

0.000212

AC:

303

AN:

1427982

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

219

AN XY:

709258

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000734

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00290

Gnomad4 FIN exome

AF:

0.0000254

Gnomad4 NFE exome

AF:

0.0000318

Gnomad4 OTH exome

AF:

0.000303

GnomAD4 genome

AF:

0.0000986

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74404

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00249

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000340

ExAC

AF:

0.000530

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jul 10, 2022	This alteration is classified as likely 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. -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 28, 2023	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.34

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.010

T;.

Eigen

Benign

-0.016

Eigen_PC

Benign

-0.084

FATHMM_MKL

Benign

0.28

LIST_S2

Benign

0.75

T;T

M_CAP

Benign

0.074

MetaRNN

Benign

0.0086

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.5

M;M

MutationTaster

Benign

0.51

N;N

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-2.6

D;D

REVEL

Benign

0.068

Sift

Uncertain

0.0010

D;T

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;P

Vest4

0.31

MutPred

0.36

Gain of catalytic residue at Y230 (P = 0.0014);Gain of catalytic residue at Y230 (P = 0.0014);

MVP

0.35

MPC

1.6

ClinPred

0.13

GERP RS

3.5

Varity_R

0.30

gMVP

0.54

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