dbSNP rs150363147: CCDC78:p.Asp67Gly (chr16-725861-T-C) – ACMG Classification: Benign (-7 pts)

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4BP6_ModerateBS2

The NM_001378030.1(CCDC78):c.200A>G(p.Asp67Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000826 in 1,611,120 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D67N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00034 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000056 ( 0 hom. )

Consequence

CCDC78
NM_001378030.1 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.570

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 -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.29993284).

BP6

Variant 16-725861-T-C is Benign according to our data. Variant chr16-725861-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 473254.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 52 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC78	NM_001378030.1 link	c.200A>G	p.Asp67Gly	missense_variant	Exon 3 of 14	ENST00000345165.10	NP_001364959.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC78	ENST00000345165.10 link	c.200A>G	p.Asp67Gly	missense_variant	Exon 3 of 14	5	NM_001378030.1	ENSP00000316851.5		H3BLT8

Frequencies

GnomAD3 genomes

AF:

0.000342

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00111

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD2 exomes

AF:

0.0000982

AC:

AN:

244278

AF XY:

0.0000755

show subpopulations

Gnomad AFR exome

AF:

0.00111

Gnomad AMR exome

AF:

0.0000880

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000362

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000555

AC:

AN:

1458794

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

725360

show subpopulations

African (AFR)

AF:

0.00161

AC:

AN:

33438

American (AMR)

AF:

0.0000900

AC:

AN:

44444

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25990

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

85560

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52830

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1110788

Other (OTH)

AF:

0.000166

AC:

AN:

60296

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

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:

0.000341

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.00111

AC:

AN:

41568

American (AMR)

AF:

0.000196

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68032

Other (OTH)

AF:

0.000947

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

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:

0.000551

Hom.:

Bravo

AF:

0.000442

ESP6500AA

AF:

0.00137

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000108

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Congenital myopathy with internal nuclei and atypical cores

Benign:1

Jan 19, 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

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.25

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

Eigen

Benign

0.15

Eigen_PC

Benign

0.024

FATHMM_MKL

Benign

0.29

LIST_S2

Benign

0.76

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.30

MetaSVM

Benign

-0.47

MutationAssessor

Benign

1.8

PhyloP100

0.57

PrimateAI

Benign

0.33

PROVEAN

Pathogenic

-6.1

REVEL

Benign

0.28

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.018

Polyphen

0.99

Vest4

0.67

MVP

0.34

MPC

0.37

ClinPred

0.17

GERP RS

4.2

Varity_R

0.40

gMVP

0.28

Mutation Taster

=66/34

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