2-84670377-A-T

Variant names:

• chr2-84670377-A-T
• rs17025409
• NM_001370.2:c.6356A>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001370.2(DNAH6):​c.6356A>T​(p.Tyr2119Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000719 in 1,391,588 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y2119C) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: DNAH6 NM_001370.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.57
• Publications: 0 publications found

Genes affected

DNAH6 (HGNC:2951): (dynein axonemal heavy chain 6) This gene belongs to the dynein family, whose members encode large proteins that are constituents of the microtubule-associated motor protein complex. This complex is composed of dynein heavy, intermediate and light chains, which can be axonemal or cytoplasmic. This protein is an axonemal dynein heavy chain. It is involved in producing force for ciliary beating by using energy from ATP hydrolysis. Mutations in this gene may cause primary ciliary dyskinesia (PCD) as well as heterotaxy. [provided by RefSeq, Jun 2016]

DNAH6 Gene-Disease associations (from GenCC):

• male infertility with azoospermia or oligozoospermia due to single gene mutation

  Inheritance: AR Classification: MODERATE Submitted by: King Faisal Specialist Hospital and Research Center

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001370.2. 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
	DNAH6	NM_001370.2	MANE Select	c.6356A>T	p.Tyr2119Phe	missense	Exon 39 of 77	NP_001361.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH6	ENST00000389394.8	TSL:5 MANE Select	c.6356A>T	p.Tyr2119Phe	missense	Exon 39 of 77	ENSP00000374045.3
	DNAH6	ENST00000602588.1	TSL:1	n.584A>T		non_coding_transcript_exon	Exon 4 of 11

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.19e-7 AC: 1 AN: 1391588 Hom.: 0 Cov.: 28 AF XY: 0.00000146 AC XY: 1 AN XY: 686388

African (AFR) AF: 0.00 AC: 0 AN: 31346

American (AMR) AF: 0.00 AC: 0 AN: 35224

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25084

East Asian (EAS) AF: 0.00 AC: 0 AN: 35596

South Asian (SAS) AF: 0.00 AC: 0 AN: 77872

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49266

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5676

European-Non Finnish (NFE) AF: 9.31e-7 AC: 1 AN: 1073748

Other (OTH) AF: 0.00 AC: 0 AN: 57776

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.083	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	22
DANN	Benign	0.96
DEOGEN2	Benign	0.0070	T
Eigen	Benign	-0.040
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.020	T
MetaRNN	Uncertain	0.66	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.77	N
PhyloP100		7.6
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-2.2	N
REVEL	Benign	0.19
Sift	Benign	0.37	T
Polyphen		0.012	B
Vest4		0.46
MutPred		0.88		Loss of sheet (P = 0.0457)
MVP		0.36
MPC		0.087
ClinPred		0.67	D
GERP RS		5.1
Varity_R		0.20
gMVP		0.53
Mutation Taster		=53/47	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs17025409; hg19: chr2-84897501;