16-725237-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_001378030.1(CCDC78):​c.492C>T​(p.Gly164=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000802 in 1,608,276 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00041 ( 0 hom., cov: 34)
Exomes 𝑓: 0.00084 ( 0 hom. )

Consequence

CCDC78
NM_001378030.1 splice_region, synonymous

Scores

2
Splicing: ADA: 0.00007995
2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -2.58
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.91).
BP6
Variant 16-725237-G-A is Benign according to our data. Variant chr16-725237-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 473261.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-2.59 with no splicing effect.
BS2
High AC in GnomAd4 at 62 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
CCDC78NM_001378030.1 linkuse as main transcriptc.492C>T p.Gly164= splice_region_variant, synonymous_variant 5/14 ENST00000345165.10 NP_001364959.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
CCDC78ENST00000345165.10 linkuse as main transcriptc.492C>T p.Gly164= splice_region_variant, synonymous_variant 5/145 NM_001378030.1 ENSP00000316851 A2

Frequencies

GnomAD3 genomes
AF:
0.000407
AC:
62
AN:
152166
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.000576
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000794
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000379
AC:
93
AN:
245454
Hom.:
0
AF XY:
0.000389
AC XY:
52
AN XY:
133838
show subpopulations
Gnomad AFR exome
AF:
0.000193
Gnomad AMR exome
AF:
0.0000869
Gnomad ASJ exome
AF:
0.000701
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000688
Gnomad OTH exome
AF:
0.000498
GnomAD4 exome
AF:
0.000843
AC:
1228
AN:
1455992
Hom.:
0
Cov.:
37
AF XY:
0.000836
AC XY:
606
AN XY:
724550
show subpopulations
Gnomad4 AFR exome
AF:
0.000209
Gnomad4 AMR exome
AF:
0.000134
Gnomad4 ASJ exome
AF:
0.000957
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00101
Gnomad4 OTH exome
AF:
0.00103
GnomAD4 genome
AF:
0.000407
AC:
62
AN:
152284
Hom.:
0
Cov.:
34
AF XY:
0.000376
AC XY:
28
AN XY:
74450
show subpopulations
Gnomad4 AFR
AF:
0.0000962
Gnomad4 AMR
AF:
0.000131
Gnomad4 ASJ
AF:
0.000576
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000794
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000486
Hom.:
1
Bravo
AF:
0.000468
EpiCase
AF:
0.000927
EpiControl
AF:
0.000771

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Benign, criteria provided, single submitterclinical testingGeneDxJan 28, 2020- -
Likely benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenJun 01, 2023CCDC78: BP4, BP7 -
Congenital myopathy with internal nuclei and atypical cores Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 11, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.91
CADD
Benign
0.23
DANN
Benign
0.66

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000080
dbscSNV1_RF
Benign
0.028
SpliceAI score (max)
0.18
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs144396385; hg19: chr16-775237; COSMIC: COSV52401341; COSMIC: COSV52401341; API