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rs73489339

Variant summary

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

The NM_001378030.1(CCDC78):c.60T>C(p.Asn20=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000479 in 1,548,300 control chromosomes in the GnomAD database, including 6 homozygotes. 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 0.0025 ( 3 hom., cov: 33)
Exomes 𝑓: 0.00025 ( 3 hom. )

Consequence

CCDC78
NM_001378030.1 splice_region, synonymous

Scores

2
Splicing: ADA: 0.00002946
2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -1.93
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.95).
BP6
Variant 16-726308-A-G is Benign according to our data. Variant chr16-726308-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 434620.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.93 with no splicing effect.
BS2
High AC in GnomAd at 384 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CCDC78NM_001378030.1 linkuse as main transcriptc.60T>C p.Asn20= splice_region_variant, synonymous_variant 1/14 ENST00000345165.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CCDC78ENST00000345165.10 linkuse as main transcriptc.60T>C p.Asn20= splice_region_variant, synonymous_variant 1/145 NM_001378030.1 A2

Frequencies

GnomAD3 genomes
AF:
0.00253
AC:
384
AN:
152070
Hom.:
3
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00884
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000981
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00633
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000616
AC:
92
AN:
149468
Hom.:
1
AF XY:
0.000428
AC XY:
34
AN XY:
79528
show subpopulations
Gnomad AFR exome
AF:
0.00979
Gnomad AMR exome
AF:
0.000411
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000177
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000255
AC:
356
AN:
1396112
Hom.:
3
Cov.:
34
AF XY:
0.000228
AC XY:
157
AN XY:
688670
show subpopulations
Gnomad4 AFR exome
AF:
0.00861
Gnomad4 AMR exome
AF:
0.000509
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000252
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000148
Gnomad4 OTH exome
AF:
0.000811
GnomAD4 genome
AF:
0.00254
AC:
386
AN:
152188
Hom.:
3
Cov.:
33
AF XY:
0.00269
AC XY:
200
AN XY:
74392
show subpopulations
Gnomad4 AFR
AF:
0.00886
Gnomad4 AMR
AF:
0.000980
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000289
Hom.:
1
Bravo
AF:
0.00282
Asia WGS
AF:
0.000577
AC:
3
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoAug 24, 2015- -
Congenital myopathy with internal nuclei and atypical cores Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeJan 19, 2024- -
not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxFeb 18, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.95
Cadd
Benign
0.12
Dann
Benign
0.50

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000029
dbscSNV1_RF
Benign
0.018
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

LitVar

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

Other links and lift over

dbSNP: rs73489339; hg19: chr16-776308; API