17-74285053-G-T

Position:

chr17-74285053-G-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_023036.6(DNAI2):c.197G>T(p.Arg66Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000241 in 1,614,216 control chromosomes in the GnomAD database, including 1 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 0.0011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

DNAI2
NM_023036.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 9.23

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 -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015297323).

BP6

Variant 17-74285053-G-T is Benign according to our data. Variant chr17-74285053-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 415315.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1, Benign=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.000153 (224/1461880) while in subpopulation AFR AF= 0.00454 (152/33480). AF 95% confidence interval is 0.00395. There are 1 homozygotes in gnomad4_exome. There are 105 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNAI2	NM_023036.6 link	c.197G>T	p.Arg66Leu	missense_variant	3/14	ENST00000311014.11	NP_075462.3	Q9GZS0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNAI2	ENST00000311014.11 link	c.197G>T	p.Arg66Leu	missense_variant	3/14	1	NM_023036.6	ENSP00000308312.6		Q9GZS0-1

Frequencies

GnomAD3 genomes

AF:

0.00109

AC:

166

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00359

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000299

AC:

AN:

251226

Hom.:

AF XY:

0.000287

AC XY:

AN XY:

135818

show subpopulations

Gnomad AFR exome

AF:

0.00388

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000153

AC:

224

AN:

1461880

Hom.:

Cov.:

AF XY:

0.000144

AC XY:

105

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00454

Gnomad4 AMR exome

AF:

0.000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000414

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.00108

AC:

165

AN:

152336

Hom.:

Cov.:

AF XY:

0.000953

AC XY:

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.00356

Gnomad4 AMR

AF:

0.000915

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000148

Hom.:

Bravo

AF:

0.00122

ESP6500AA

AF:

0.00431

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000379

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 24, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 23, 2014	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. -

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. -

DNAI2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 17, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.14

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

.;T;T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.91

D;.;D;D

M_CAP

Benign

0.016

MetaRNN

Benign

0.015

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Pathogenic

3.3

M;M;M;.

PrimateAI

Benign

0.47

PROVEAN

Pathogenic

-4.8

.;D;D;.

REVEL

Uncertain

0.33

Sift

Benign

0.039

.;D;D;.

Sift4G

Benign

0.12

T;T;T;T

Polyphen

0.72

.;P;P;.

Vest4

0.75

MVP

0.29

MPC

0.53

ClinPred

0.14

GERP RS

4.9

Varity_R

0.43

gMVP

0.67

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

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