Genetic Variant NM_033124.5:c.875A>G (chr12-48918752-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_033124.5(DRC2):c.875A>G(p.Tyr292Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,496 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: 0.0000014 ( 0 hom. )

Consequence

DRC2
NM_033124.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.156

Publications

3 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: G2P, Labcorp Genetics (formerly Invitae), ClinGen
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: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.045712024).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033124.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DRC2	NM_033124.5	MANE Select	c.875A>G	p.Tyr292Cys	missense	Exon 6 of 8	NP_149115.2	Q8IXS2-1
	DRC2	NM_001286957.2		c.446A>G	p.Tyr149Cys	missense	Exon 6 of 8	NP_001273886.1	B4DXQ7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CCDC65	ENST00000320516.5	TSL:1 MANE Select	c.875A>G	p.Tyr292Cys	missense	Exon 6 of 8	ENSP00000312706.4	Q8IXS2-1
ENSG00000272822	ENST00000398092.4	TSL:3	c.385-14844T>C		intron	N/A	ENSP00000438507.1	F5H423
CCDC65	ENST00000266984.9	TSL:5	c.875A>G	p.Tyr292Cys	missense	Exon 6 of 9	ENSP00000266984.5	Q8IXS2-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251486

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461496

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727042

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25910

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111904

Other (OTH)

AF:

0.00

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Primary ciliary dyskinesia 27 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.064

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.0033

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.031

LIST_S2

Benign

0.64

M_CAP

Benign

0.0043

MetaRNN

Benign

0.046

MetaSVM

Benign

-1.0

PhyloP100

0.16

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.3

REVEL

Benign

0.053

Sift

Benign

0.18

Sift4G

Benign

0.085

Polyphen

0.0020

Vest4

0.14

MutPred

0.29

Loss of phosphorylation at Y292 (P = 0.0388)

MVP

0.030

MPC

0.059

ClinPred

0.031

GERP RS

2.3

Varity_R

0.049

gMVP

0.080

Mutation Taster

=98/2

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over