rs79967166

Positions:

• chr5-13754203-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The ENST00000265104.5(DNAH5):​c.10555G>C​(p.Gly3519Arg) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. G3519G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: DNAH5 ENST00000265104.5 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 7.72

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.991
• PP5: Variant 5-13754203-C-G is Pathogenic according to our data. Variant chr5-13754203-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 6478.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAH5	NM_001369.3	c.10555G>C	p.Gly3519Arg	missense_variant, splice_region_variant	62/79	ENST00000265104.5	NP_001360.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAH5	ENST00000265104.5	c.10555G>C	p.Gly3519Arg	missense_variant, splice_region_variant	62/79	1	NM_001369.3	ENSP00000265104	P4
DNAH5	ENST00000681290.1	c.10510G>C	p.Gly3504Arg	missense_variant, splice_region_variant	62/79			ENSP00000505288	A1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Primary ciliary dyskinesia Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 13, 2021

In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Nucleotide substitutions within the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site, but this prediction has not been confirmed by published transcriptional studies. 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: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). This variant has been observed in individual(s) with primary ciliary dyskinesia (PMID: 11788826). ClinVar contains an entry for this variant (Variation ID: 6478). This variant is not present in population databases (ExAC no frequency). This sequence change replaces glycine with arginine at codon 3519 of the DNAH5 protein (p.Gly3519Arg). The glycine residue is highly conserved and there is a moderate physicochemical difference between glycine and arginine. This variant also falls at the last nucleotide of exon 62, which is part of the consensus splice site for this exon. -

Primary ciliary dyskinesia 3 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 01, 2002

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.39
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.87	D
Eigen	Pathogenic	0.95
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Pathogenic	4.5	H
MutationTaster	Benign	1.0	A
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-8.0	D
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		1.0
MutPred		0.91		Gain of MoRF binding (P = 0.0347);
MVP		0.96
MPC		0.53
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.92
gMVP		0.92

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.99
SpliceAI score (max)		0.71		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.71		Position offset: 4
DS_DL_spliceai		0.52		Position offset: 0

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

Publications

LitVar

Other links and lift over

dbSNP: rs79967166; hg19: chr5-13754312;