Genetic Variant DNAH8:p.Thr331Ser (chr6-38737847-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001206927.2(DNAH8):c.991A>T(p.Thr331Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000701 in 1,425,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign 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. T331A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

DNAH8
NM_001206927.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.27

Publications

0 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: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04482913).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH8	NM_001206927.2 link	c.991A>T	p.Thr331Ser	missense_variant	Exon 7 of 93	ENST00000327475.11	NP_001193856.1	Q96JB1Q8IU65A0A075B6F3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DNAH8	ENST00000327475.11 link	c.991A>T	p.Thr331Ser	missense_variant	Exon 7 of 93	5	NM_001206927.2	ENSP00000333363.7	A0A075B6F3
DNAH8	ENST00000359357.7 link	c.340A>T	p.Thr114Ser	missense_variant	Exon 5 of 91	2		ENSP00000352312.3	Q96JB1-1
DNAH8	ENST00000449981.6 link	c.991A>T	p.Thr331Ser	missense_variant	Exon 6 of 82	5		ENSP00000415331.2	H0Y7V4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.01e-7

AC:

AN:

1425578

Hom.:

Cov.:

AF XY:

0.00000141

AC XY:

AN XY:

709174

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30878

American (AMR)

AF:

0.00

AC:

AN:

37784

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25232

East Asian (EAS)

AF:

0.00

AC:

AN:

36122

South Asian (SAS)

AF:

0.00

AC:

AN:

80786

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52834

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5660

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1097512

Other (OTH)

AF:

0.0000170

AC:

AN:

58770

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.85

DEOGEN2

Benign

0.0064

T;T;T

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.57

T;T;T

M_CAP

Benign

0.0050

MetaRNN

Benign

0.045

T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.34

.;.;N

PhyloP100

1.3

PrimateAI

Benign

0.30

PROVEAN

Benign

0.010

.;N;N

REVEL

Benign

0.013

Sift

Benign

0.73

.;T;T

Polyphen

0.0

.;.;B

Vest4

0.059

MutPred

0.34

.;.;Gain of sheet (P = 0.0125);

MVP

0.49

MPC

0.11

ClinPred

0.032

GERP RS

3.4

Varity_R

0.044

gMVP

0.18

Mutation Taster

=97/3

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over