2-84517989-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_001370.2(DNAH6):c.163C>A(p.His55Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000135 in 1,550,526 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H55Y) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000057 ( 0 hom. )

Consequence

DNAH6
NM_001370.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.53

Variant links:

Genes affected

DNAH6 (HGNC:2951): (dynein axonemal heavy chain 6) This gene belongs to the dynein family, whose members encode large proteins that are constituents of the microtubule-associated motor protein complex. This complex is composed of dynein heavy, intermediate and light chains, which can be axonemal or cytoplasmic. This protein is an axonemal dynein heavy chain. It is involved in producing force for ciliary beating by using energy from ATP hydrolysis. Mutations in this gene may cause primary ciliary dyskinesia (PCD) as well as heterotaxy. [provided by RefSeq, Jun 2016]

DNAH6 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;

PP2

Missense variant where missense usually causes diseases, DNAH6

BP4

Computational evidence support a benign effect (MetaRNN=0.08771017).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DNAH6	NM_001370.2 linkuse as main transcript	c.163C>A	p.His55Asn	missense_variant	2/77	ENST00000389394.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DNAH6	ENST00000389394.8 linkuse as main transcript	c.163C>A	p.His55Asn	missense_variant	2/77	5	NM_001370.2	P1	Q9C0G6-1
DNAH6	ENST00000494025.1 linkuse as main transcript	n.167C>A		non_coding_transcript_exon_variant	1/9	1
DNAH6	ENST00000468661.1 linkuse as main transcript	n.218C>A		non_coding_transcript_exon_variant	2/4	4
DNAH6	ENST00000476689.5 linkuse as main transcript	n.300C>A		non_coding_transcript_exon_variant	2/11	2

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000632

AC:

AN:

158184

Hom.:

AF XY:

0.00

AC XY:

AN XY:

83424

show subpopulations

Gnomad AFR exome

AF:

0.000121

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000572

AC:

AN:

1398310

Hom.:

Cov.:

AF XY:

0.00000435

AC XY:

AN XY:

689700

show subpopulations

Gnomad4 AFR exome

AF:

0.000222

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:

0.00

Gnomad4 OTH exome

AF:

0.0000172

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.000313

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000642

ExAC

AF:

0.0000397

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 27, 2022

The c.163C>A (p.H55N) alteration is located in exon 2 (coding exon 1) of the DNAH6 gene. This alteration results from a C to A substitution at nucleotide position 163, causing the histidine (H) at amino acid position 55 to be replaced by an asparagine (N). 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

0.10

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.54

Cadd

Benign

Dann

Benign

0.80

DEOGEN2

Benign

0.0090

T;T

Eigen

Benign

-0.53

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.23

LIST_S2

Benign

0.50

T;.

M_CAP

Benign

0.013

MetaRNN

Benign

0.088

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.90

L;L

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.7

N;N

REVEL

Benign

0.020

Sift

Uncertain

0.021

D;D

Polyphen

0.42

B;B

Vest4

0.26

MutPred

0.41

Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);

MVP

0.19

MPC

0.097

ClinPred

0.094

GERP RS

4.6

Varity_R

0.13

gMVP

0.15

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