6-38945559-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4BS1_SupportingBS2

The NM_001206927.2(DNAH8):c.12100C>T(p.Leu4034Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00123 in 1,614,136 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00083 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0013 ( 3 hom. )

Consequence

DNAH8
NM_001206927.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:1

Conservation

PhyloP100: 3.31

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 links:

DNAH8-AS1 (HGNC:40188): (DNAH8 antisense RNA 1)

DNAH8-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2842149).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000834 (127/152296) while in subpopulation NFE AF= 0.00151 (103/68028). AF 95% confidence interval is 0.00128. There are 0 homozygotes in gnomad4. There are 60 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH8	NM_001206927.2 link	c.12100C>T	p.Leu4034Phe	missense_variant	Exon 80 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.12100C>T	p.Leu4034Phe	missense_variant	Exon 80 of 93	5	NM_001206927.2	ENSP00000333363.7	A0A075B6F3
DNAH8	ENST00000359357.7 link	c.11449C>T	p.Leu3817Phe	missense_variant	Exon 78 of 91	2		ENSP00000352312.3	Q96JB1-1
DNAH8	ENST00000449981.6 link	c.12100C>T	p.Leu4034Phe	missense_variant	Exon 79 of 82	5		ENSP00000415331.2	H0Y7V4
DNAH8-AS1	ENST00000416948.1 link	n.52+7489G>A		intron_variant	Intron 1 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.000835

AC:

127

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00170

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00151

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000919

AC:

231

AN:

251434

Hom.:

AF XY:

0.000868

AC XY:

118

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000878

Gnomad NFE exome

AF:

0.00180

Gnomad OTH exome

AF:

0.000978

GnomAD4 exome

AF:

0.00127

AC:

1853

AN:

1461840

Hom.:

Cov.:

AF XY:

0.00129

AC XY:

935

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00180

Gnomad4 NFE exome

AF:

0.00154

Gnomad4 OTH exome

AF:

0.000662

GnomAD4 genome

AF:

0.000834

AC:

127

AN:

152296

Hom.:

Cov.:

AF XY:

0.000806

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00170

Gnomad4 NFE

AF:

0.00151

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000752

Hom.:

Bravo

AF:

0.000665

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00140

AC:

ExAC

AF:

0.00110

AC:

134

EpiCase

AF:

0.00109

EpiControl

AF:

0.00113

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:2Benign:1

Nov 08, 2018

UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 19, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Aug 16, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.12100C>T (p.L4034F) alteration is located in exon 80 (coding exon 79) of the DNAH8 gene. This alteration results from a C to T substitution at nucleotide position 12100, causing the leucine (L) at amino acid position 4034 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

DNAH8-related disorder

Uncertain:1

Aug 20, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The DNAH8 c.12100C>T variant is predicted to result in the amino acid substitution p.Leu4034Phe. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.18% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant has interpretations of likely benign (1) uncertain significance (4) in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/525268/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Uncertain:1

Dec 01, 2021

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.096

T;T;T

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Benign

0.021

MetaRNN

Benign

0.28

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.8

.;.;M

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-3.9

.;D;D

REVEL

Benign

0.23

Sift

Uncertain

0.0020

.;D;D

Polyphen

1.0

.;.;D

Vest4

0.78

MVP

0.88

MPC

0.60

ClinPred

0.18

GERP RS

4.6

Varity_R

0.69

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over