chr17-7736431-G-A

Variant names:

• chr17-7736431-G-A
• rs839721
• NM_020877.5:c.979-636G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_020877.5(DNAH2):​c.979-636G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.577 in 151,964 control chromosomes in the GnomAD database, including 25,416 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.58 (25416 hom., cov: 32)
• Consequence: DNAH2 NM_020877.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.405
• Publications: 13 publications found

Genes affected

DNAH2 (HGNC:2948): (dynein axonemal heavy chain 2) Dyneins are microtubule-associated motor protein complexes composed of several heavy, light, and intermediate chains. The axonemal dyneins, found in cilia and flagella, are components of the outer and inner dynein arms attached to the peripheral microtubule doublets. DNAH2 is an axonemal inner arm dynein heavy chain (Chapelin et al., 1997 [PubMed 9256245]).[supplied by OMIM, Mar 2008]

DNAH2 Gene-Disease associations (from GenCC):

• spermatogenic failure 45

  Inheritance: AR Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.732 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020877.5. 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
	DNAH2	NM_020877.5	MANE Select	c.979-636G>A		intron	N/A	NP_065928.2
	DNAH2	NM_001303270.2		c.979-636G>A		intron	N/A	NP_001290199.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH2	ENST00000572933.6	TSL:2 MANE Select	c.979-636G>A		intron	N/A	ENSP00000458355.1
	DNAH2	ENST00000570791.5	TSL:1	c.979-636G>A		intron	N/A	ENSP00000460245.1
	DNAH2	ENST00000389173.6	TSL:2	c.979-636G>A		intron	N/A	ENSP00000373825.2

Frequencies

GnomAD3 genomes AF: 0.577 AC: 87575 AN: 151846 Hom.: 25408 Cov.: 32

Gnomad AFR AF: 0.572

Gnomad AMI AF: 0.585

Gnomad AMR AF: 0.570

Gnomad ASJ AF: 0.589

Gnomad EAS AF: 0.721

Gnomad SAS AF: 0.754

Gnomad FIN AF: 0.563

Gnomad MID AF: 0.554

Gnomad NFE AF: 0.559

Gnomad OTH AF: 0.572

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.577 AC: 87620 AN: 151964 Hom.: 25416 Cov.: 32 AF XY: 0.580 AC XY: 43093 AN XY: 74302

African (AFR) AF: 0.571 AC: 23667 AN: 41422

American (AMR) AF: 0.570 AC: 8696 AN: 15262

Ashkenazi Jewish (ASJ) AF: 0.589 AC: 2043 AN: 3470

East Asian (EAS) AF: 0.721 AC: 3728 AN: 5174

South Asian (SAS) AF: 0.752 AC: 3622 AN: 4816

European-Finnish (FIN) AF: 0.563 AC: 5942 AN: 10556

Middle Eastern (MID) AF: 0.565 AC: 166 AN: 294

European-Non Finnish (NFE) AF: 0.559 AC: 38009 AN: 67952

Other (OTH) AF: 0.576 AC: 1215 AN: 2108

Alfa AF: 0.567 Hom.: 110707

Bravo AF: 0.572

Asia WGS AF: 0.730 AC: 2539 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	1.1
DANN	Benign	0.51
PhyloP100		-0.41
Mutation Taster		=100/0	polymorphism (auto)

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: rs839721; hg19: chr17-7639749;