17-74299752-G-A

Position:

chr17-74299752-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6BP7BS1BS2

The NM_023036.6(DNAI2):c.759G>A(p.Ala253=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000787 in 1,613,374 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0034 ( 4 hom., cov: 32)

Exomes 𝑓: 0.00051 ( 4 hom. )

Consequence

DNAI2
NM_023036.6 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 0.0970

Variant links:

Genes affected

DNAI2 (HGNC:18744): (dynein axonemal intermediate chain 2) The protein encoded by this gene belongs to the dynein intermediate chain family, and is part of the dynein complex of respiratory cilia and sperm flagella. Mutations in this gene are associated with primary ciliary dyskinesia type 9. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Mar 2010]

DNAI2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.36).

BP6

Variant 17-74299752-G-A is Benign according to our data. Variant chr17-74299752-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 241453.We mark this variant Likely_benign, oryginal submissions are: {Benign=3, Uncertain_significance=1}.

BP7

Synonymous conserved (PhyloP=0.097 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00341 (518/152102) while in subpopulation AFR AF= 0.011 (457/41488). AF 95% confidence interval is 0.0102. There are 4 homozygotes in gnomad4. There are 259 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAI2	NM_023036.6 linkuse as main transcript	c.759G>A	p.Ala253=	synonymous_variant	7/14	ENST00000311014.11	NP_075462.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAI2	ENST00000311014.11 linkuse as main transcript	c.759G>A	p.Ala253=	synonymous_variant	7/14	1	NM_023036.6	ENSP00000308312	P2	Q9GZS0-1

Frequencies

GnomAD3 genomes

AF:

0.00341

AC:

519

AN:

151984

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0111

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00197

Gnomad ASJ

AF:

0.00490

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00288

GnomAD3 exomes

AF:

0.00117

AC:

294

AN:

250604

Hom.:

AF XY:

0.000900

AC XY:

122

AN XY:

135488

show subpopulations

Gnomad AFR exome

AF:

0.0126

Gnomad AMR exome

AF:

0.000752

Gnomad ASJ exome

AF:

0.00347

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000194

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000514

AC:

751

AN:

1461272

Hom.:

Cov.:

AF XY:

0.000470

AC XY:

342

AN XY:

726896

show subpopulations

Gnomad4 AFR exome

AF:

0.0134

Gnomad4 AMR exome

AF:

0.000894

Gnomad4 ASJ exome

AF:

0.00287

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000719

Gnomad4 OTH exome

AF:

0.00137

GnomAD4 genome

AF:

0.00341

AC:

518

AN:

152102

Hom.:

Cov.:

AF XY:

0.00348

AC XY:

259

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.0110

Gnomad4 AMR

AF:

0.00196

Gnomad4 ASJ

AF:

0.00490

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00285

Alfa

AF:

0.00227

Hom.:

Bravo

AF:

0.00380

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:3

Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jan 06, 2021	This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

Primary ciliary dyskinesia 9

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.36

CADD

Benign

0.011

DANN

Benign

0.85

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over