Genetic Variant DNAH5:p.Leu1446Leu (chr5-13865685-G-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_001369.3(DNAH5):c.4338C>A(p.Leu1446Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000702 in 1,424,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L1446L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

DNAH5
NM_001369.3 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.02

Publications

0 publications found

Variant links:

Genes affected

DNAH5 (HGNC:2950): (dynein axonemal heavy chain 5) This gene encodes a dynein protein, which is part of a microtubule-associated motor protein complex consisting of heavy, light, and intermediate chains. This protein is an axonemal heavy chain dynein. It functions as a force-generating protein with ATPase activity, whereby the release of ADP is thought to produce the force-producing power stroke. Mutations in this gene cause primary ciliary dyskinesia type 3, as well as Kartagener syndrome, which are both diseases due to ciliary defects. [provided by RefSeq, Oct 2009]

DNAH5 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P, ClinGen
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DNAH5 links:

ENSG00000251423 (HGNC:40187):

ENSG00000251423 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.78).

BP7

Synonymous conserved (PhyloP=-1.02 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH5	NM_001369.3 link	c.4338C>A	p.Leu1446Leu	synonymous_variant	Exon 27 of 79	ENST00000265104.5	NP_001360.1	Q8TE73

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DNAH5	ENST00000265104.5 link	c.4338C>A	p.Leu1446Leu	synonymous_variant	Exon 27 of 79	1	NM_001369.3	ENSP00000265104.4	Q8TE73
DNAH5	ENST00000681290.1 link	c.4293C>A	p.Leu1431Leu	synonymous_variant	Exon 27 of 79			ENSP00000505288.1	A0A7P0Z455
ENSG00000251423	ENST00000503244.2 link	n.253+5130G>T		intron_variant	Intron 1 of 2	4
ENSG00000251423	ENST00000637153.1 link	n.213+5170G>T		intron_variant	Intron 1 of 2	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.02e-7

AC:

AN:

1424014

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

711078

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32644

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25856

East Asian (EAS)

AF:

0.00

AC:

AN:

39504

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85422

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5686

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1077730

Other (OTH)

AF:

0.00

AC:

AN:

59142

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.78

CADD

Benign

3.9

(source)

DANN

Benign

0.54

PhyloP100

-1.0

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over