NM_015512.5:c.4477A>C

Variant names:

• chr3-52359985-A-C
• rs375805820
• NM_015512.5:c.4477A>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_015512.5(DNAH1):​c.4477A>C​(p.Ile1493Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000186 in 1,613,822 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1493V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DNAH1 NM_015512.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.54
• 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 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.756

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH1	NM_015512.5	c.4477A>C	p.Ile1493Leu	missense_variant	Exon 27 of 78	ENST00000420323.7	NP_056327.4
DNAH1	XM_017006129.2	c.4477A>C	p.Ile1493Leu	missense_variant	Exon 28 of 80		XP_016861618.1
DNAH1	XM_017006130.2	c.4477A>C	p.Ile1493Leu	missense_variant	Exon 28 of 79		XP_016861619.1
DNAH1	XM_017006131.2	c.4477A>C	p.Ile1493Leu	missense_variant	Exon 28 of 79		XP_016861620.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAH1	ENST00000420323.7	c.4477A>C	p.Ile1493Leu	missense_variant	Exon 27 of 78	1	NM_015512.5	ENSP00000401514.2
DNAH1	ENST00000486752.5	n.4738A>C		non_coding_transcript_exon_variant	Exon 27 of 77	2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152244 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461578 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727064

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53286

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111860

Other (OTH) AF: 0.00 AC: 0 AN: 60368

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152244 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74378

African (AFR) AF: 0.00 AC: 0 AN: 41462

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10632

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2092

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.0012	T
BayesDel_noAF	Benign	-0.24
CADD	Benign	22
DANN	Uncertain	0.99
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.016	T
MetaRNN	Pathogenic	0.76	D
MetaSVM	Benign	-0.55	T
PhyloP100		4.5
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.23
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.017	D
Vest4		0.74
MutPred		0.61		Loss of MoRF binding (P = 0.1348);
MVP		0.61
MPC		0.39
ClinPred		0.96	D
GERP RS		5.1
gMVP		0.67
Mutation Taster		=81/19	polymorphism

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

Other links and lift over

dbSNP: rs375805820; hg19: chr3-52394001;