chr3-52391444-C-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_015512.5(DNAH1):c.9893C>G(p.Thr3298Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000124 in 1,608,940 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. 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. T3298M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

DNAH1
NM_015512.5 missense, splice_region

Scores

Splicing: ADA: 0.9206

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.98

Publications

2 publications found

Variant links:

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

DNAH1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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, 0.818

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH1	NM_015512.5 link	c.9893C>G	p.Thr3298Arg	missense_variant, splice_region_variant	Exon 63 of 78	ENST00000420323.7	NP_056327.4	Q9P2D7-4A0A140VJI6
DNAH1	XM_017006129.2 link	c.9962C>G	p.Thr3321Arg	missense_variant, splice_region_variant	Exon 65 of 80		XP_016861618.1
DNAH1	XM_017006130.2 link	c.9893C>G	p.Thr3298Arg	missense_variant, splice_region_variant	Exon 64 of 79		XP_016861619.1	Q9P2D7-4A0A140VJI6
DNAH1	XM_017006131.2 link	c.9836C>G	p.Thr3279Arg	missense_variant, splice_region_variant	Exon 64 of 79		XP_016861620.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAH1	ENST00000420323.7 link	c.9893C>G	p.Thr3298Arg	missense_variant, splice_region_variant	Exon 63 of 78	1	NM_015512.5	ENSP00000401514.2		Q9P2D7-4

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1456858

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724284

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33314

American (AMR)

AF:

0.0000228

AC:

AN:

43798

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26052

East Asian (EAS)

AF:

0.00

AC:

AN:

39440

South Asian (SAS)

AF:

0.00

AC:

AN:

85592

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52968

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1109698

Other (OTH)

AF:

0.00

AC:

AN:

60232

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152082

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74270

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41390

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 10, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.9893C>G (p.T3298R) alteration is located in exon 63 (coding exon 62) of the DNAH1 gene. This alteration results from a C to G substitution at nucleotide position 9893, causing the threonine (T) at amino acid position 3298 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.070

CADD

Uncertain

(source)

DANN

Uncertain

0.99

Eigen

Uncertain

0.67

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.95

M_CAP

Benign

0.041

MetaRNN

Pathogenic

0.82

MetaSVM

Benign

-0.49

PhyloP100

5.0

PrimateAI

Uncertain

0.73

PROVEAN

Uncertain

-4.4

REVEL

Uncertain

0.33

Sift

Benign

0.16

Sift4G

Uncertain

0.015

Vest4

0.87

MutPred

0.49

Gain of MoRF binding (P = 0.053);

MVP

0.56

MPC

0.57

ClinPred

0.97

GERP RS

4.6

gMVP

0.83

Mutation Taster

=46/54

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.92

dbscSNV1_RF

Benign

0.66

SpliceAI score (max)

0.060

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over