NM_015512.5:c.1003C>T

Variant names:

• chr3-52331279-C-T
• rs1553628078
• NM_015512.5:c.1003C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_015512.5(DNAH1):​c.1003C>T​(p.Pro335Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/20 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. P335A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNAH1 NM_015512.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.26
• Publications: 0 publications found

Genes affected

DNAH1 (HGNC:2940): (dynein axonemal heavy chain 1) This gene encodes an inner dynein arm heavy chain that provides structural support between the radial spokes and the outer doublet of the sperm tail. Naturally occurring mutations in this gene are associated with primary ciliary dyskinesia and multiple morphological anomalies of the flagella that result in asthenozoospermia and male infertility. Mice with a homozygous knockout of the orthologous gene are viable but have reduced sperm motility and are infertile. [provided by RefSeq, Feb 2017]

DNAH1 Gene-Disease associations (from GenCC):

• spermatogenic failure 18

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• ciliary dyskinesia, primary, 37

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, ClinGen
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• non-syndromic male infertility due to sperm motility disorder

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.37799048).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015512.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH1	NM_015512.5	MANE Select	c.1003C>T	p.Pro335Ser	missense	Exon 7 of 78	NP_056327.4

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH1	ENST00000420323.7	TSL:1 MANE Select	c.1003C>T	p.Pro335Ser	missense	Exon 7 of 78	ENSP00000401514.2
	DNAH1	ENST00000486752.5	TSL:2	n.1264C>T		non_coding_transcript_exon	Exon 7 of 77
	DNAH1	ENST00000497875.1	TSL:2	n.1168C>T		non_coding_transcript_exon	Exon 8 of 21

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1457672 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 724528

African (AFR) AF: 0.00 AC: 0 AN: 33434

American (AMR) AF: 0.00 AC: 0 AN: 44152

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25974

East Asian (EAS) AF: 0.00 AC: 0 AN: 39610

South Asian (SAS) AF: 0.00 AC: 0 AN: 85112

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53136

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110254

Other (OTH) AF: 0.00 AC: 0 AN: 60248

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Spermatogenic failure 18;C4539798:Ciliary dyskinesia, primary, 37 Uncertain:1

Jun 16, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline with serine at codon 335 of the DNAH1 protein (p.Pro335Ser). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with a DNAH1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, this variant has uncertain impact on DNAH1 function. The available evidence is currently insufficient to determine its role in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	21
DANN	Uncertain	0.99
Eigen	Benign	-0.090
Eigen_PC	Benign	0.083
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.0070	T
MetaRNN	Benign	0.38	T
MetaSVM	Benign	-1.1	T
PhyloP100		4.3
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.082
Sift	Benign	0.14	T
Sift4G	Benign	0.78	T
Vest4		0.57
MutPred		0.43		Gain of relative solvent accessibility (P = 0.0479)
MVP		0.32
MPC		0.13
ClinPred		0.74	D
GERP RS		4.7
gMVP		0.52
Mutation Taster		=78/22	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1553628078; hg19: chr3-52365295;