rs538936217

Positions:

chr6-38918037-T-C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_001206927.2(DNAH8):c.10421T>C(p.Phe3474Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000582 in 1,613,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

DNAH8
NM_001206927.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.25

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:):

DNAH8-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.11445418).

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000595 (87/1461628) while in subpopulation SAS AF= 0.000939 (81/86246). AF 95% confidence interval is 0.000774. There are 0 homozygotes in gnomad4_exome. There are 63 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAH8	NM_001206927.2 linkuse as main transcript	c.10421T>C	p.Phe3474Ser	missense_variant	70/93	ENST00000327475.11	NP_001193856.1
DNAH8-AS1	NR_038401.1 linkuse as main transcript	n.782+5048A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAH8	ENST00000327475.11 linkuse as main transcript	c.10421T>C	p.Phe3474Ser	missense_variant	70/93	5	NM_001206927.2	ENSP00000333363	P2
DNAH8	ENST00000359357.7 linkuse as main transcript	c.9770T>C	p.Phe3257Ser	missense_variant	68/91	2		ENSP00000352312	A2	Q96JB1-1
DNAH8	ENST00000449981.6 linkuse as main transcript	c.10421T>C	p.Phe3474Ser	missense_variant	69/82	5		ENSP00000415331

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000104

AC:

AN:

250920

Hom.:

AF XY:

0.000111

AC XY:

AN XY:

135606

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000850

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000595

AC:

AN:

1461628

Hom.:

Cov.:

AF XY:

0.0000866

AC XY:

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000939

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 01, 2022

The c.10421T>C (p.F3474S) alteration is located in exon 70 (coding exon 69) of the DNAH8 gene. This alteration results from a T to C substitution at nucleotide position 10421, causing the phenylalanine (F) at amino acid position 3474 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Primary ciliary dyskinesia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 13, 2021

This sequence change replaces phenylalanine with serine at codon 3474 of the DNAH8 protein (p.Phe3474Ser). The phenylalanine residue is moderately conserved and there is a large physicochemical difference between phenylalanine and serine. This variant is present in population databases (rs538936217, ExAC 0.09%). This missense change has been observed in individual(s) with clinical features of DNAH8-related conditions (Invitae). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C35"). 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

0.31

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

T;D;T

Eigen

Benign

-0.099

Eigen_PC

Benign

0.034

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.81

T;T;T

M_CAP

Benign

0.037

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.6

.;.;L

MutationTaster

Benign

0.75

D;D;N

PrimateAI

Benign

0.43

PROVEAN

Uncertain

-2.8

.;D;D

REVEL

Uncertain

0.34

Sift

Benign

0.040

.;D;D

Polyphen

0.0

.;.;B

Vest4

0.58

MutPred

0.60

.;.;Gain of disorder (P = 3e-04);

MVP

0.86

MPC

0.23

ClinPred

0.16

GERP RS

4.6

Varity_R

0.23

gMVP

0.46

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

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