Genetic Variant NM_145038.5:c.1824G>A (chr2-26453454-G-A) – ACMG Classification: Benign (-15 pts)

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_StrongBP6_ModerateBP7BS1BS2

The NM_145038.5(DRC1):c.1824G>A(p.Glu608Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00101 in 1,614,146 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0052 ( 4 hom., cov: 33)

Exomes 𝑓: 0.00057 ( 5 hom. )

Consequence

DRC1
NM_145038.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.901

Publications

10 publications found

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 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 21
Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
spermatogenic failure 80
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

DRC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.92).

BP6

Variant 2-26453454-G-A is Benign according to our data. Variant chr2-26453454-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 414290.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.901 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00522 (795/152316) while in subpopulation AFR AF = 0.0174 (725/41568). AF 95% confidence interval is 0.0164. There are 4 homozygotes in GnomAd4. There are 400 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DRC1	NM_145038.5 link	c.1824G>A	p.Glu608Glu	synonymous_variant	Exon 14 of 17	ENST00000288710.7	NP_659475.2	Q96MC2
DRC1	XM_047446339.1 link	c.804G>A	p.Glu268Glu	synonymous_variant	Exon 7 of 10		XP_047302295.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DRC1	ENST00000288710.7 link	c.1824G>A	p.Glu608Glu	synonymous_variant	Exon 14 of 17	2	NM_145038.5	ENSP00000288710.2	Q96MC2
DRC1	ENST00000439066.2 link	n.554G>A		non_coding_transcript_exon_variant	Exon 5 of 5	3
DRC1	ENST00000649059.1 link	n.*787G>A		non_coding_transcript_exon_variant	Exon 13 of 16			ENSP00000497543.1	A0A3B3IT12
DRC1	ENST00000649059.1 link	n.*787G>A		3_prime_UTR_variant	Exon 13 of 16			ENSP00000497543.1	A0A3B3IT12

Frequencies

GnomAD3 genomes

AF:

0.00522

AC:

794

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0175

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00670

GnomAD4 exome

AF:

0.000566

AC:

828

AN:

1461830

Hom.:

Cov.:

AF XY:

0.000505

AC XY:

367

AN XY:

727206

show subpopulations

African (AFR)

AF:

0.0178

AC:

596

AN:

33476

American (AMR)

AF:

0.00199

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000696

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53390

Middle Eastern (MID)

AF:

0.000867

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

1111992

Other (OTH)

AF:

0.00137

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.523

Heterozygous variant carriers

111

166

222

277

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00522

AC:

795

AN:

152316

Hom.:

Cov.:

AF XY:

0.00537

AC XY:

400

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.0174

AC:

725

AN:

41568

American (AMR)

AF:

0.00327

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68032

Other (OTH)

AF:

0.00663

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

122

162

203

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00241

Hom.:

Bravo

AF:

0.00598

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.92

CADD

Benign

0.19

(source)

PhyloP100

-0.90

Mutation Taster

=100/0

polymorphism

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over