NM_015512.5:c.194C>T

Variant names:

• chr3-52322636-C-T
• rs1701189576
• NM_015512.5:c.194C>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015512.5(DNAH1):​c.194C>T​(p.Pro65Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNAH1 NM_015512.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.25

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09744966).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH1	NM_015512.5	c.194C>T	p.Pro65Leu	missense_variant	Exon 2 of 78	ENST00000420323.7	NP_056327.4
DNAH1	XM_017006129.2	c.194C>T	p.Pro65Leu	missense_variant	Exon 3 of 80		XP_016861618.1
DNAH1	XM_017006130.2	c.194C>T	p.Pro65Leu	missense_variant	Exon 3 of 79		XP_016861619.1
DNAH1	XM_017006131.2	c.194C>T	p.Pro65Leu	missense_variant	Exon 3 of 79		XP_016861620.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAH1	ENST00000420323.7	c.194C>T	p.Pro65Leu	missense_variant	Exon 2 of 78	1	NM_015512.5	ENSP00000401514.2
DNAH1	ENST00000486752.5	n.455C>T		non_coding_transcript_exon_variant	Exon 2 of 77	2
DNAH1	ENST00000497875.1	n.359C>T		non_coding_transcript_exon_variant	Exon 3 of 21	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Apr 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 65 of the DNAH1 protein (p.Pro65Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DNAH1-related conditions. 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. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	17
DANN	Uncertain	1.0
Eigen	Benign	-0.70
Eigen_PC	Benign	-0.74
FATHMM_MKL	Benign	0.079	N
LIST_S2	Benign	0.52	T
M_CAP	Benign	0.0065	T
MetaRNN	Benign	0.097	T
MetaSVM	Benign	-1.0	T
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.054
Sift	Uncertain	0.011	D
Sift4G	Benign	0.17	T
Vest4		0.29
MutPred		0.16		Loss of glycosylation at P65 (P = 0.0159);
MVP		0.15
MPC		0.13
ClinPred		0.12	T
GERP RS		3.0
gMVP		0.33

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: rs1701189576; hg19: chr3-52356652;