chr6-38822895-C-T

Position:

• chr6-38822895-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001206927.2(DNAH8):​c.3581C>T​(p.Ala1194Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNAH8 NM_001206927.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.17

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15575084).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAH8	NM_001206927.2	c.3581C>T	p.Ala1194Val	missense_variant	27/93	ENST00000327475.11	NP_001193856.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAH8	ENST00000327475.11	c.3581C>T	p.Ala1194Val	missense_variant	27/93	5	NM_001206927.2	ENSP00000333363	P2
DNAH8	ENST00000359357.7	c.2930C>T	p.Ala977Val	missense_variant	25/91	2		ENSP00000352312	A2
DNAH8	ENST00000449981.6	c.3581C>T	p.Ala1194Val	missense_variant	26/82	5		ENSP00000415331

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000137 AC: 2 AN: 1456530 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 724302

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000118

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Primary ciliary dyskinesia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 05, 2022

This variant has not been reported in the literature in individuals affected with DNAH8-related conditions. 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. 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 C0"). ClinVar contains an entry for this variant (Variation ID: 407302). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 1194 of the DNAH8 protein (p.Ala1194Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.44
BayesDel_addAF	Benign	0.0094	T
BayesDel_noAF	Benign	-0.22
CADD	Uncertain	23
DANN	Uncertain	0.98
DEOGEN2	Benign	0.028	T;T;T
Eigen	Benign	0.025
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.75	T;T;T
M_CAP	Benign	0.0067	T
MetaRNN	Benign	0.16	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	.;.;L
MutationTaster	Benign	0.99	D;D;D
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-2.4	.;N;N
REVEL	Benign	0.12
Sift	Benign	1.0	.;T;T
Polyphen		0.040	.;.;B
Vest4		0.36
MutPred		0.34		.;.;Gain of ubiquitination at K980 (P = 0.0882);
MVP		0.54
MPC		0.13
ClinPred		0.88	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.15
gMVP		0.50

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

Other links and lift over

dbSNP: rs1060501472; hg19: chr6-38790671; COSMIC: COSV100545777; COSMIC: COSV100545777;