Genetic Variant DNAH8:p.Ile1627Ile (chr6-38845609-C-T) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_ModerateBP6_ModerateBP7BS1BS2

The NM_001206927.2(DNAH8):c.4881C>T(p.Ile1627Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00131 in 1,613,852 control chromosomes in the GnomAD database, including 43 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00083 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0014 ( 42 hom. )

Consequence

DNAH8
NM_001206927.2 synonymous

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.578

Publications

3 publications found

Variant links:

Genes affected

DNAH8 (HGNC:2952): (dynein axonemal heavy chain 8) The protein encoded by this gene is a heavy chain of an axonemal dynein involved in sperm and respiratory cilia motility. Axonemal dyneins generate force through hydrolysis of ATP and binding to microtubules. [provided by RefSeq, Jan 2012]

DNAH8 Gene-Disease associations (from GenCC):

spermatogenic failure 46
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
spermatogenic failure 5
Inheritance: AR Classification: MODERATE Submitted by: Franklin by Genoox
primary ciliary dyskinesia
Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

DNAH8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.39).

BP6

Variant 6-38845609-C-T is Benign according to our data. Variant chr6-38845609-C-T is described in ClinVar as Benign. ClinVar VariationId is 414380.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.578 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000828 (126/152254) while in subpopulation SAS AF = 0.0249 (120/4822). AF 95% confidence interval is 0.0213. There are 1 homozygotes in GnomAd4. There are 96 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 42 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001206927.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH8	NM_001206927.2	MANE Select	c.4881C>T	p.Ile1627Ile	synonymous	Exon 36 of 93	NP_001193856.1
	DNAH8	NM_001371.4		c.4230C>T	p.Ile1410Ile	synonymous	Exon 35 of 92	NP_001362.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
DNAH8	ENST00000327475.11	TSL:5 MANE Select	c.4881C>T	p.Ile1627Ile	synonymous	Exon 36 of 93	ENSP00000333363.7
DNAH8	ENST00000359357.7	TSL:2	c.4230C>T	p.Ile1410Ile	synonymous	Exon 34 of 91	ENSP00000352312.3
DNAH8	ENST00000449981.6	TSL:5	c.4881C>T	p.Ile1627Ile	synonymous	Exon 35 of 82	ENSP00000415331.2

Frequencies

GnomAD3 genomes

AF:

0.000828

AC:

126

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.0249

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00305

AC:

765

AN:

250818

AF XY:

0.00415

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00196

GnomAD4 exome

AF:

0.00136

AC:

1991

AN:

1461598

Hom.:

Cov.:

AF XY:

0.00201

AC XY:

1459

AN XY:

727116

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33464

American (AMR)

AF:

0.0000447

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39670

South Asian (SAS)

AF:

0.0217

AC:

1874

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000144

AC:

AN:

1111810

Other (OTH)

AF:

0.00151

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

127

253

380

506

633

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000828

AC:

126

AN:

152254

Hom.:

Cov.:

AF XY:

0.00129

AC XY:

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41538

American (AMR)

AF:

0.000131

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000386

AC:

AN:

5188

South Asian (SAS)

AF:

0.0249

AC:

120

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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:

0.000101

Hom.:

Bravo

AF:

0.000178

Asia WGS

AF:

0.0110

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.39

CADD

Benign

4.9

(source)

DANN

Benign

0.75

PhyloP100

0.58

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=75/25

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over