chr6-38822895-C-T

Variant names:

• chr6-38822895-C-T
• rs1060501472
• NM_001206927.2:c.3581C>T

Variant summary

Our verdict is Uncertain significance. The variant received 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 (★). Synonymous variant affecting the same amino acid position (i.e. A1194A) has been classified as Benign.

• 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
• Publications: 4 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

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

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.3581C>T	p.Ala1194Val	missense	Exon 27 of 93	NP_001193856.1
	DNAH8	NM_001371.4		c.2930C>T	p.Ala977Val	missense	Exon 26 of 92	NP_001362.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH8	ENST00000327475.11	TSL:5 MANE Select	c.3581C>T	p.Ala1194Val	missense	Exon 27 of 93	ENSP00000333363.7
	DNAH8	ENST00000359357.7	TSL:2	c.2930C>T	p.Ala977Val	missense	Exon 25 of 91	ENSP00000352312.3
	DNAH8	ENST00000449981.6	TSL:5	c.3581C>T	p.Ala1194Val	missense	Exon 26 of 82	ENSP00000415331.2

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

African (AFR) AF: 0.00 AC: 0 AN: 33208

American (AMR) AF: 0.00 AC: 0 AN: 43296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25886

East Asian (EAS) AF: 0.00 AC: 0 AN: 39592

South Asian (SAS) AF: 0.0000118 AC: 1 AN: 84660

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53326

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5712

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1110656

Other (OTH) AF: 0.00 AC: 0 AN: 60194

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

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

Jul 05, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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 v4.9

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
Eigen	Benign	0.025
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.0067	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L
PhyloP100		4.2
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.12
Sift	Benign	1.0	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
Mutation Taster		=85/15	polymorphism

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

Other links and lift over

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