12-48905046-A-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_033124.5(DRC2):c.233A>T(p.His78Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000322 in 1,614,112 control chromosomes in the GnomAD database, including 4 homozygotes. 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.0017 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

DRC2
NM_033124.5 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.560

Publications

0 publications found

Variant links:

Genes affected

DRC2 (HGNC:29937): (coiled-coil domain containing 65) This gene encodes a sperm tail protein that is highly expressed in adult testis, spermatocytes and spermatids. The protein plays a critical role in the assembly of the nexin-dynein regulatory complex. Mutations in this gene result in primary ciliary dyskinesia. [provided by RefSeq, Nov 2013]

DRC2 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 27
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DRC2 links:

ENSG00000272822 (HGNC:):

ENSG00000272822 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0071433187).

BP6

Variant 12-48905046-A-T is Benign according to our data. Variant chr12-48905046-A-T is described in ClinVar as Likely_benign. ClinVar VariationId is 416605.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00169 (257/152314) while in subpopulation AFR AF = 0.00601 (250/41568). AF 95% confidence interval is 0.0054. There are 2 homozygotes in GnomAd4. There are 124 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DRC2	NM_033124.5 link	c.233A>T	p.His78Leu	missense_variant	Exon 2 of 8	ENST00000320516.5	NP_149115.2
DRC2	NM_001286957.2 link	c.-197A>T		5_prime_UTR_variant	Exon 2 of 8		NP_001273886.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC65	ENST00000320516.5 link	c.233A>T	p.His78Leu	missense_variant	Exon 2 of 8	1	NM_033124.5	ENSP00000312706.4
ENSG00000272822	ENST00000398092.4 link	c.385-1138T>A		intron_variant	Intron 4 of 4	3		ENSP00000438507.1

Frequencies

GnomAD3 genomes

AF:

0.00168

AC:

256

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00601

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.000410

AC:

103

AN:

251396

AF XY:

0.000368

show subpopulations

Gnomad AFR exome

AF:

0.00609

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000179

AC:

262

AN:

1461798

Hom.:

Cov.:

AF XY:

0.000160

AC XY:

116

AN XY:

727196

show subpopulations

African (AFR)

AF:

0.00684

AC:

229

AN:

33478

American (AMR)

AF:

0.000157

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1111956

Other (OTH)

AF:

0.000298

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.462

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

GnomAD4 genome

AF:

0.00169

AC:

257

AN:

152314

Hom.:

Cov.:

AF XY:

0.00167

AC XY:

124

AN XY:

74470

show subpopulations

African (AFR)

AF:

0.00601

AC:

250

AN:

41568

American (AMR)

AF:

0.000327

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68034

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000394

Hom.:

Bravo

AF:

0.00193

ESP6500AA

AF:

0.00567

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000494

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia 27

Benign:1

Oct 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.55

CADD

Benign

(source)

DANN

Benign

0.81

DEOGEN2

Benign

0.0056

.;.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.54

T;T;T

M_CAP

Benign

0.0041

MetaRNN

Benign

0.0071

T;T;T

MetaSVM

Benign

-1.1

PhyloP100

0.56

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.5

N;N;N

REVEL

Benign

0.074

Sift

Benign

0.069

T;T;T

Sift4G

Benign

0.098

T;T;T

Polyphen

0.0

.;.;B

Vest4

0.35

MVP

0.030

MPC

0.058

ClinPred

0.0058

GERP RS

-1.3

Varity_R

0.082

gMVP

0.18

Mutation Taster

=100/0

polymorphism

(source)

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

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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