Variant 2-26402028-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_145038.5(DRC1):c.39C>A(p.Asn13Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000151 in 1,460,202 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

DRC1
NM_145038.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.367

Variant links:

Genes affected

DRC1 (HGNC:24245): (dynein regulatory complex subunit 1) This gene encodes a central component of the nexin-dynein complex (N-DRC), which regulates the assembly of ciliary dynein. Mutations in this gene can cause ciliary dyskinesia. [provided by RefSeq, Aug 2015]

DRC1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.040125966).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DRC1	NM_145038.5 linkuse as main transcript	c.39C>A	p.Asn13Lys	missense_variant	1/17	ENST00000288710.7	NP_659475.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
DRC1	ENST00000288710.7 linkuse as main transcript	c.39C>A	p.Asn13Lys	missense_variant	1/17	2	NM_145038.5	ENSP00000288710	P1
DRC1	ENST00000421869.5 linkuse as main transcript	c.39C>A	p.Asn13Lys	missense_variant, NMD_transcript_variant	1/8	1		ENSP00000414375
DRC1	ENST00000649059.1 linkuse as main transcript	c.27C>A	p.Asn9Lys	missense_variant, NMD_transcript_variant	1/16			ENSP00000497543

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000122

AC:

AN:

246482

Hom.:

AF XY:

0.0000224

AC XY:

AN XY:

133912

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000270

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1460202

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000180

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000595

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 13, 2019

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The lysine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with DRC1-related conditions. This variant is present in population databases (rs757114521, ExAC 0.004%). This sequence change replaces asparagine with lysine at codon 13 of the DRC1 protein (p.Asn13Lys). The asparagine residue is weakly conserved and there is a moderate physicochemical difference between asparagine and lysine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.065

DANN

Benign

0.61

DEOGEN2

Benign

0.0015

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.32

M_CAP

Benign

0.0034

MetaRNN

Benign

0.040

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.83

MutationTaster

Benign

1.0

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.3

REVEL

Benign

0.034

Sift

Benign

0.42

Sift4G

Benign

0.55

Polyphen

0.0010

Vest4

0.061

MutPred

0.15

Gain of ubiquitination at N13 (P = 0.0054);

MVP

0.048

MPC

0.063

ClinPred

0.032

GERP RS

-2.2

Varity_R

0.046

gMVP

0.21

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