3-52322641-GCC-G

Position:

• chr3-52322641-GCC-G

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_015512.5(DNAH1):​c.202_203del​(p.Pro68ThrfsTer18) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,662 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DNAH1 NM_015512.5 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -0.0640

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 Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-52322641-GCC-G is Pathogenic according to our data. Variant chr3-52322641-GCC-G is described in ClinVar as [Pathogenic]. Clinvar id is 2029087.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAH1	NM_015512.5	c.202_203del	p.Pro68ThrfsTer18	frameshift_variant	2/78	ENST00000420323.7	NP_056327.4
DNAH1	XM_017006129.2	c.202_203del	p.Pro68ThrfsTer18	frameshift_variant	3/80		XP_016861618.1
DNAH1	XM_017006130.2	c.202_203del	p.Pro68ThrfsTer18	frameshift_variant	3/79		XP_016861619.1
DNAH1	XM_017006131.2	c.202_203del	p.Pro68ThrfsTer18	frameshift_variant	3/79		XP_016861620.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAH1	ENST00000420323.7	c.202_203del	p.Pro68ThrfsTer18	frameshift_variant	2/78	1	NM_015512.5	ENSP00000401514	P1
DNAH1	ENST00000486752.5	n.463_464del		non_coding_transcript_exon_variant	2/77	2
DNAH1	ENST00000497875.1	n.367_368del		non_coding_transcript_exon_variant	3/21	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461662 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 727120

Gnomad4 AFR exome AF: 0.00

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

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

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 05, 2022

For these reasons, this variant has been classified as Pathogenic. This variant has not been reported in the literature in individuals affected with DNAH1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Pro68Thrfs*18) in the DNAH1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in DNAH1 are known to be pathogenic (PMID: 27573432, 27798045). -

Computational scores

Source: dbNSFP v4.3

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-52356657;