rs760280521

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001031737.3(CCDC78):c.1271G>A(p.Arg424Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000391 in 1,612,390 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. R424R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

CCDC78
NM_001031737.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.202

Publications

1 publications found

Variant links:

Genes affected

CCDC78 (HGNC:14153): (coiled-coil domain containing 78) Involved in de novo centriole assembly involved in multi-ciliated epithelial cell differentiation and skeletal muscle contraction. Located in several cellular components, including centriole; deuterosome; and sarcolemma. Implicated in centronuclear myopathy 4. [provided by Alliance of Genome Resources, Apr 2022]

CCDC78 Gene-Disease associations (from GenCC):

congenital myopathy with internal nuclei and atypical cores
Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)
centronuclear myopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

CCDC78 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018242717).

BP6

Variant 16-722948-C-T is Benign according to our data. Variant chr16-722948-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 473252.

BS2

High AC in GnomAd4 at 19 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001031737.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CCDC78	NM_001378030.1	MANE Select	c.1275G>A	p.Gln425Gln	synonymous	Exon 13 of 14	NP_001364959.1
CCDC78	NM_001031737.3		c.1271G>A	p.Arg424Lys	missense	Exon 13 of 14	NP_001026907.2
CCDC78	NM_001378031.1		c.1095G>A	p.Gln365Gln	synonymous	Exon 11 of 12	NP_001364960.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CCDC78	ENST00000293889.10	TSL:1	c.1271G>A	p.Arg424Lys	missense	Exon 13 of 14	ENSP00000293889.6
CCDC78	ENST00000345165.10	TSL:5 MANE Select	c.1275G>A	p.Gln425Gln	synonymous	Exon 13 of 14	ENSP00000316851.5
CCDC78	ENST00000947033.1		c.1275G>A	p.Gln425Gln	synonymous	Exon 13 of 14	ENSP00000617092.1

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

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:

0.00

GnomAD2 exomes

AF:

0.000128

AC:

AN:

249544

AF XY:

0.000111

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000897

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:

0.000164

GnomAD4 exome

AF:

0.0000301

AC:

AN:

1460044

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

726324

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000939

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

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:

51650

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111968

Other (OTH)

AF:

0.0000331

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

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

AF:

0.000125

AC:

AN:

152346

Hom.:

Cov.:

AF XY:

0.000174

AC XY:

AN XY:

74502

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41566

American (AMR)

AF:

0.00124

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

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:

0.000142

Hom.:

Bravo

AF:

0.000227

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000578

AC:

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

CCDC78-related disorder (1)

Congenital myopathy with internal nuclei and atypical cores (1)

Inborn genetic diseases (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.51

CADD

Benign

9.1

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.0043

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.42

FATHMM_MKL

Uncertain

0.76

LIST_S2

Benign

0.35

M_CAP

Benign

0.026

MetaRNN

Benign

0.018

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.63

PhyloP100

0.20

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.75

REVEL

Benign

0.037

Sift

Benign

0.24

Sift4G

Pathogenic

0.0

Polyphen

0.041

Vest4

0.34

MutPred

0.31

Gain of methylation at R424 (P = 0.0396)

MVP

0.16

MPC

0.37

ClinPred

0.082

GERP RS

-0.83

Varity_R

0.078

gMVP

0.27

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over