Genetic Variant CBX8:p.Leu129Phe (chr17-79795418-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_020649.3(CBX8):c.387G>T(p.Leu129Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000038 in 1,604,600 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

CBX8
NM_020649.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.956

Publications

0 publications found

Variant links:

Genes affected

CBX8 (HGNC:15962): (chromobox 8) Enables methylated histone binding activity. Involved in negative regulation of transcription by RNA polymerase II. Located in chromatin and nucleoplasm. Part of PRC1 complex. Biomarker of esophagus squamous cell carcinoma and glioblastoma. [provided by Alliance of Genome Resources, Apr 2022]

CBX8 Gene-Disease associations (from GenCC):

schizophrenia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

CBX8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.047080845).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020649.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CBX8	NM_020649.3	MANE Select	c.387G>T	p.Leu129Phe	missense	Exon 5 of 5	NP_065700.1	Q9HC52

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CBX8	ENST00000269385.9	TSL:1 MANE Select	c.387G>T	p.Leu129Phe	missense	Exon 5 of 5	ENSP00000269385.4	Q9HC52
CBX8	ENST00000413392.5	TSL:3	c.357G>T	p.Leu119Phe	missense	Exon 5 of 5	ENSP00000405058.1	C9J6K3
CBX8	ENST00000427800.2	TSL:2	c.312G>T	p.Leu104Phe	missense	Exon 5 of 5	ENSP00000408753.2	C9JM54

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152236

Hom.:

Cov.:

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:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000606

AC:

AN:

231212

AF XY:

0.0000877

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000406

AC:

AN:

1452364

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

721748

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33388

American (AMR)

AF:

0.00

AC:

AN:

43410

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25748

East Asian (EAS)

AF:

0.00

AC:

AN:

39412

South Asian (SAS)

AF:

0.000649

AC:

AN:

84792

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51340

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1108440

Other (OTH)

AF:

0.0000666

AC:

AN:

60086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

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:

0.0000131

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74390

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.000414

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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:

0.000252

Hom.:

ExAC

AF:

0.0000743

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.58

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

Eigen

Benign

-0.61

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.79

M_CAP

Benign

0.0055

MetaRNN

Benign

0.047

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

PhyloP100

0.96

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.6

REVEL

Benign

0.034

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.024

Polyphen

0.067

Vest4

0.066

MutPred

0.28

Loss of catalytic residue at L129 (P = 0.0082)

MVP

0.27

MPC

0.70

ClinPred

0.11

GERP RS

0.48

Varity_R

0.099

gMVP

0.12

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over