rs140761899

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_001378030.1(CCDC78):​c.183C>G​(p.Ile61Met) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000166 in 1,609,698 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 34)
Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

CCDC78
NM_001378030.1 missense, splice_region

Scores

7
12

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.339

Publications

2 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.023700088).
BP6
Variant 16-725878-G-C is Benign according to our data. Variant chr16-725878-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 573422.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAd4 at 75 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CCDC78NM_001378030.1 linkc.183C>G p.Ile61Met missense_variant, splice_region_variant Exon 3 of 14 ENST00000345165.10 NP_001364959.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CCDC78ENST00000345165.10 linkc.183C>G p.Ile61Met missense_variant, splice_region_variant Exon 3 of 14 5 NM_001378030.1 ENSP00000316851.5 H3BLT8

Frequencies

GnomAD3 genomes
AF:
0.000493
AC:
75
AN:
152232
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00135
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000327
Gnomad ASJ
AF:
0.000865
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000147
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000211
AC:
51
AN:
241306
AF XY:
0.000153
show subpopulations
Gnomad AFR exome
AF:
0.00133
Gnomad AMR exome
AF:
0.000296
Gnomad ASJ exome
AF:
0.000824
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000736
Gnomad OTH exome
AF:
0.000843
GnomAD4 exome
AF:
0.000132
AC:
193
AN:
1457348
Hom.:
0
Cov.:
37
AF XY:
0.000127
AC XY:
92
AN XY:
724524
show subpopulations
African (AFR)
AF:
0.000868
AC:
29
AN:
33400
American (AMR)
AF:
0.000316
AC:
14
AN:
44254
Ashkenazi Jewish (ASJ)
AF:
0.00100
AC:
26
AN:
25950
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39648
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85394
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52684
Middle Eastern (MID)
AF:
0.000521
AC:
3
AN:
5760
European-Non Finnish (NFE)
AF:
0.0000955
AC:
106
AN:
1110026
Other (OTH)
AF:
0.000249
AC:
15
AN:
60232
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.496
Heterozygous variant carriers
0
12
23
35
46
58
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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:
0.000492
AC:
75
AN:
152350
Hom.:
0
Cov.:
34
AF XY:
0.000443
AC XY:
33
AN XY:
74504
show subpopulations
African (AFR)
AF:
0.00135
AC:
56
AN:
41586
American (AMR)
AF:
0.000327
AC:
5
AN:
15308
Ashkenazi Jewish (ASJ)
AF:
0.000865
AC:
3
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5182
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10632
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000147
AC:
10
AN:
68026
Other (OTH)
AF:
0.000473
AC:
1
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.499
Heterozygous variant carriers
0
3
7
10
14
17
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000246
Hom.:
0
Bravo
AF:
0.000495
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000519
AC:
2
ESP6500AA
AF:
0.00160
AC:
7
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000207
AC:
25

ClinVar

Significance: Likely benign
Submissions summary: Benign:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Congenital myopathy with internal nuclei and atypical cores Benign:1
Dec 29, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

CCDC78-related disorder Benign:1
Aug 19, 2021
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.24
BayesDel_addAF
Benign
-0.36
T
BayesDel_noAF
Benign
-0.30
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.16
T
Eigen
Uncertain
0.22
Eigen_PC
Benign
0.12
FATHMM_MKL
Benign
0.70
D
LIST_S2
Benign
0.72
T
M_CAP
Uncertain
0.092
D
MetaRNN
Benign
0.024
T
MetaSVM
Benign
-0.65
T
MutationAssessor
Uncertain
2.0
M
PhyloP100
0.34
PrimateAI
Benign
0.46
T
PROVEAN
Uncertain
-2.6
D
REVEL
Benign
0.17
Sift
Uncertain
0.0030
D
Sift4G
Uncertain
0.0040
D
Polyphen
1.0
D
Vest4
0.52
MVP
0.34
MPC
0.39
ClinPred
0.059
T
GERP RS
2.2
Varity_R
0.38
gMVP
0.16
Mutation Taster
=58/42
polymorphism

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

Other links and lift over

dbSNP: rs140761899; hg19: chr16-775878; API