NM_001370.2:c.1818C>T

Variant names:

• chr2-84573481-C-T
• rs11891970
• NM_001370.2:c.1818C>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001370.2(DNAH6):​c.1818C>T​(p.Ala606Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000014 in 1,426,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A606A) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DNAH6 NM_001370.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.364
• Publications: 11 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: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.4).
• BP7: Synonymous conserved (PhyloP=0.364 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH6	NM_001370.2	c.1818C>T	p.Ala606Ala	synonymous_variant	Exon 12 of 77	ENST00000389394.8	NP_001361.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAH6	ENST00000389394.8	c.1818C>T	p.Ala606Ala	synonymous_variant	Exon 12 of 77	5	NM_001370.2	ENSP00000374045.3
DNAH6	ENST00000494025.1	n.861C>T		non_coding_transcript_exon_variant	Exon 6 of 9	1
DNAH6	ENST00000476689.5	n.1168C>T		non_coding_transcript_exon_variant	Exon 8 of 11	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000140 AC: 2 AN: 1426414 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 709320

African (AFR) AF: 0.0000644 AC: 2 AN: 31066

American (AMR) AF: 0.00 AC: 0 AN: 34084

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 38116

South Asian (SAS) AF: 0.00 AC: 0 AN: 78858

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53144

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5678

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1101416

Other (OTH) AF: 0.00 AC: 0 AN: 58968

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 99443

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.40
CADD	Benign	7.2
DANN	Benign	0.44
PhyloP100		0.36
Mutation Taster		=100/0	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: rs11891970; hg19: chr2-84800605;