rs1554195443

Variant names:

• chr6-38734531-T-C
• rs1554195443
• NM_001206927.2:c.668T>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001206927.2(DNAH8):​c.668T>C​(p.Ile223Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,658 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I223M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: DNAH8 NM_001206927.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.93
• Publications: 1 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: ClinGen, Labcorp Genetics (formerly Invitae)
• 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 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29998562).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH8	NM_001206927.2	MANE Select	c.668T>C	p.Ile223Thr	missense	Exon 5 of 93	NP_001193856.1	A0A075B6F3
	DNAH8	NM_001371.4		c.17T>C	p.Ile6Thr	missense	Exon 4 of 92	NP_001362.2	Q96JB1-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH8	ENST00000327475.11	TSL:5 MANE Select	c.668T>C	p.Ile223Thr	missense	Exon 5 of 93	ENSP00000333363.7	A0A075B6F3
	DNAH8	ENST00000359357.7	TSL:2	c.17T>C	p.Ile6Thr	missense	Exon 3 of 91	ENSP00000352312.3	Q96JB1-1
	DNAH8	ENST00000449981.6	TSL:5	c.668T>C	p.Ile223Thr	missense	Exon 4 of 82	ENSP00000415331.2	H0Y7V4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461658 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727154

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44698

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39668

South Asian (SAS) AF: 0.00 AC: 0 AN: 86238

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.000350 AC: 2 AN: 5708

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111952

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Primary ciliary dyskinesia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.060	T
Eigen	Benign	-0.077
Eigen_PC	Benign	0.10
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L
PhyloP100		5.9
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.12
Sift	Uncertain	0.010	D
Polyphen		0.026	B
Vest4		0.43
MutPred		0.68		Loss of stability (P = 0.0037)
MVP		0.78
MPC		0.17
ClinPred		0.88	D
GERP RS		5.9
Varity_R		0.29
gMVP		0.50
Mutation Taster		=79/21	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: rs1554195443; hg19: chr6-38702307;