rs121434616

Variant names:

• chrX-120544179-G-A
• rs121434616
• NM_001079872.2:c.1108C>T

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_003588.4(CUL4B):​c.1162C>T​(p.Arg388*) variant causes a stop gained change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 22)
• Consequence: CUL4B NM_003588.4 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 4.75
• Publications: 11 publications found

Genes affected

CUL4B (HGNC:2555): (cullin 4B) This gene is a member of the cullin family. The encoded protein forms a complex that functions as an E3 ubiquitin ligase and catalyzes the polyubiquitination of specific protein substrates in the cell. The protein interacts with a ring finger protein, and is required for the proteolysis of several regulators of DNA replication including chromatin licensing and DNA replication factor 1 and cyclin E. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CUL4B Gene-Disease associations (from GenCC):

• X-linked intellectual disability, Cabezas type

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, G2P

LOC124905273 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-120544179-G-A is Pathogenic according to our data. Variant chrX-120544179-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 11339.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003588.4. 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
	CUL4B	NM_001079872.2	MANE Select	c.1108C>T	p.Arg370*	stop_gained	Exon 7 of 20	NP_001073341.1
	CUL4B	NM_003588.4		c.1162C>T	p.Arg388*	stop_gained	Exon 9 of 22	NP_003579.3
	CUL4B	NM_001330624.2		c.1123C>T	p.Arg375*	stop_gained	Exon 8 of 21	NP_001317553.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CUL4B	ENST00000371322.11	TSL:1 MANE Select	c.1108C>T	p.Arg370*	stop_gained	Exon 7 of 20	ENSP00000360373.5
	CUL4B	ENST00000681206.1		c.1222C>T	p.Arg408*	stop_gained	Exon 10 of 23	ENSP00000505480.1
	CUL4B	ENST00000680673.1		c.1162C>T	p.Arg388*	stop_gained	Exon 9 of 22	ENSP00000505084.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 22

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	not provided (2)
2	-	-	X-linked intellectual disability Cabezas type (2)
1	-	-	Seizure;C0349588:Short stature;C0424503:Abnormal facial shape;C0557874:Global developmental delay;C3714756:Intellectual disability (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.67	D
BayesDel_noAF	Pathogenic	0.62
CADD	Pathogenic	36
DANN	Uncertain	1.0
FATHMM_MKL	Uncertain	0.94	D
PhyloP100		4.7
Vest4		0.83
GERP RS		3.8
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		2.0
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

dbSNP: rs121434616; hg19: chrX-119678034;