rs370930322

chr3-52323827-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_015512.5(DNAH1):c.353G>A(p.Arg118Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000818 in 1,589,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000056 (0 hom.)
• Consequence: DNAH1 NM_015512.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.370

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]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.059554815).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DNAH1	NM_015512.5	c.353G>A	p.Arg118Gln	missense_variant	3/78	ENST00000420323.7
DNAH1	XM_017006129.2	c.353G>A	p.Arg118Gln	missense_variant	4/80
DNAH1	XM_017006130.2	c.353G>A	p.Arg118Gln	missense_variant	4/79
DNAH1	XM_017006131.2	c.353G>A	p.Arg118Gln	missense_variant	4/79

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DNAH1	ENST00000420323.7	c.353G>A	p.Arg118Gln	missense_variant	3/78	1	NM_015512.5	P1
DNAH1	ENST00000486752.5	n.614G>A		non_coding_transcript_exon_variant	3/77	2
DNAH1	ENST00000497875.1	n.518G>A		non_coding_transcript_exon_variant	4/21	2

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152136 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000557 AC: 8 AN: 1437426 Hom.: 0 Cov.: 30 AF XY: 0.00000281 AC XY: 2 AN XY: 712740

Gnomad4 AFR exome AF: 0.0000304

Gnomad4 AMR exome AF: 0.0000242

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000261

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000364

Gnomad4 OTH exome AF: 0.0000168

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152136 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74322

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.0000264

ESP6500AA AF: 0.000259 AC: 1

ESP6500EA AF: 0.00 AC: 0

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

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

May 27, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 118 of the DNAH1 protein (p.Arg118Gln). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 544609). This variant has not been reported in the literature in individuals affected with DNAH1-related conditions. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.35	T
BayesDel_noAF	Benign	-0.74
Cadd	Benign	1.2
Dann	Benign	0.58
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.072	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.0072	T
MetaRNN	Benign	0.060	T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.20	T
PROVEAN	Benign	-0.56	N
REVEL	Benign	0.11
Sift	Benign	0.57	T
Sift4G	Benign	0.65	T
Vest4		0.16
MVP		0.076
MPC		0.14
ClinPred		0.012	T
GERP RS		-4.8
gMVP		0.17

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs370930322; hg19: chr3-52357843; COSMIC: COSV70227809;