17-79834033-A-G

Variant names:

• chr17-79834033-A-G
• NM_003655.3:c.1609T>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003655.3(CBX4):​c.1609T>C​(p.Phe537Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CBX4 NM_003655.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.78
• Publications: 0 publications found

Genes affected

CBX4 (HGNC:1554): (chromobox 4) Enables SUMO binding activity; SUMO ligase activity; and enzyme binding activity. Involved in negative regulation of transcription by RNA polymerase II. Located in nuclear body. Part of PRC1 complex. Implicated in hepatocellular carcinoma. Biomarker of hepatocellular carcinoma. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18355396).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003655.3. 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
	CBX4	NM_003655.3	MANE Select	c.1609T>C	p.Phe537Leu	missense	Exon 5 of 5	NP_003646.2	A0A0S2Z5B2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CBX4	ENST00000269397.9	TSL:1 MANE Select	c.1609T>C	p.Phe537Leu	missense	Exon 5 of 5	ENSP00000269397.4	O00257-1
	CBX4	ENST00000961345.1		c.1543T>C	p.Phe515Leu	missense	Exon 4 of 4	ENSP00000631404.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Benign	-0.035	T
BayesDel_noAF	Benign	-0.29
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0067	T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.10
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.0067	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.57	N
PhyloP100		2.8
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.090
Sift	Benign	0.17	T
Sift4G	Benign	1.0	T
Polyphen		0.28	B
Vest4		0.29
MutPred		0.36		Gain of catalytic residue at F537 (P = 0.0319)
MVP		0.80
MPC		1.8
ClinPred		0.34	T
GERP RS		3.2
Varity_R		0.14
gMVP		0.94

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

Other links and lift over

hg19: chr17-77807832;