Genetic Variant CCDC120:p.Pro130Leu (chrX-49063961-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001163321.4(CCDC120):c.389C>T(p.Pro130Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000332 in 1,205,207 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P130A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000036 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000033 ( 0 hom. 6 hem. )

Consequence

CCDC120
NM_001163321.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.410

Variant links:

Genes affected

CCDC120 (HGNC:28910): (coiled-coil domain containing 120) This gene encodes a protein that contains a coiled-coil domain. Several alternatively spliced transcript variants encoding multiple isoforms have been found for this gene. [provided by RefSeq, Nov 2012]

CCDC120 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008878529).

BS2

High Hemizygotes in GnomAdExome4 at 6 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC120	NM_001163321.4 link	c.389C>T	p.Pro130Leu	missense_variant	Exon 5 of 11	ENST00000603986.6	NP_001156793.2	Q96HB5-4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC120	ENST00000603986.6 link	c.389C>T	p.Pro130Leu	missense_variant	Exon 5 of 11	2	NM_001163321.4	ENSP00000474071.1		Q96HB5-4

Frequencies

GnomAD3 genomes

AF:

0.0000360

AC:

AN:

111023

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33219

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00113

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

GnomAD3 exomes

AF:

0.0000937

AC:

AN:

170814

Hom.:

AF XY:

0.0000519

AC XY:

AN XY:

57844

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000380

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000763

Gnomad SAS exome

AF:

0.000226

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000237

GnomAD4 exome

AF:

0.0000329

AC:

AN:

1094184

Hom.:

Cov.:

AF XY:

0.0000167

AC XY:

AN XY:

360036

show subpopulations

Gnomad4 AFR exome

AF:

0.000114

Gnomad4 AMR exome

AF:

0.0000288

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000333

Gnomad4 SAS exome

AF:

0.000168

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000107

Gnomad4 OTH exome

AF:

0.0000872

GnomAD4 genome

AF:

0.0000360

AC:

AN:

111023

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33219

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00113

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000529

ExAC

AF:

0.0000907

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.284C>T (p.P95L) alteration is located in exon 5 (coding exon 3) of the CCDC120 gene. This alteration results from a C to T substitution at nucleotide position 284, causing the proline (P) at amino acid position 95 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.56

BayesDel_noAF

Benign

-0.67

CADD

Benign

8.5

DANN

Benign

0.78

DEOGEN2

Benign

0.0041

T;T;T;.;.

FATHMM_MKL

Benign

0.049

LIST_S2

Benign

0.73

.;.;T;T;T

M_CAP

Benign

0.0034

MetaRNN

Benign

0.0089

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.90

N;N;N;.;.

PrimateAI

Benign

0.44

PROVEAN

Benign

0.63

.;.;.;.;N

REVEL

Benign

0.030

Sift

Benign

0.35

.;.;.;.;T

Sift4G

Uncertain

0.014

D;D;D;D;D

Polyphen

0.0

B;B;B;.;.

Vest4

0.099

MVP

0.043

ClinPred

0.016

GERP RS

1.3

Varity_R

0.035

gMVP

0.51

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over