6-43037774-G-A

Variant names:

• chr6-43037774-G-A
• rs748715099
• NM_014780.5:c.5011C>T

Variant summary

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

The NM_014780.5(CUL7):​c.5011C>T​(p.Leu1671Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000486 in 1,440,898 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. L1671I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000049 (0 hom.)
• Consequence: CUL7 NM_014780.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.84
• Publications: 0 publications found

Genes affected

CUL7 (HGNC:21024): (cullin 7) The protein encoded by this gene is a component of an E3 ubiquitin-protein ligase complex. The encoded protein interacts with TP53, CUL9, and FBXW8 proteins. Defects in this gene are a cause of 3M syndrome type 1 (3M1). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2009]

CUL7 Gene-Disease associations (from GenCC):

• 3M syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• 3-M syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

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=0.23265526).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CUL7	NM_014780.5	c.5011C>T	p.Leu1671Phe	missense_variant	Exon 26 of 26	ENST00000265348.9	NP_055595.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CUL7	ENST00000265348.9	c.5011C>T	p.Leu1671Phe	missense_variant	Exon 26 of 26	1	NM_014780.5	ENSP00000265348.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000486 AC: 70 AN: 1440898 Hom.: 0 Cov.: 31 AF XY: 0.0000462 AC XY: 33 AN XY: 714770

African (AFR) AF: 0.0000302 AC: 1 AN: 33138

American (AMR) AF: 0.00 AC: 0 AN: 40850

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25616

East Asian (EAS) AF: 0.00 AC: 0 AN: 38768

South Asian (SAS) AF: 0.00 AC: 0 AN: 83272

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51982

Middle Eastern (MID) AF: 0.000174 AC: 1 AN: 5740

European-Non Finnish (NFE) AF: 0.0000608 AC: 67 AN: 1101880

Other (OTH) AF: 0.0000168 AC: 1 AN: 59652

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000487 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.00000825 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Aug 12, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine with phenylalanine at codon 1671 of the CUL7 protein (p.Leu1671Phe). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and phenylalanine. This variant is present in population databases (rs748715099, ExAC 0.02%). This variant has not been reported in the literature in individuals affected with CUL7-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.39
BayesDel_addAF	Uncertain	0.038	T
BayesDel_noAF	Benign	-0.18
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	T;.
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Benign	0.53	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.060	D
MetaRNN	Benign	0.23	T;T
MetaSVM	Benign	-0.38	T
MutationAssessor	Benign	1.8	L;.
PhyloP100		1.8
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-0.35	N;N
REVEL	Uncertain	0.29
Sift	Uncertain	0.013	D;D
Sift4G	Benign	0.088	T;T
Polyphen		1.0	D;.
Vest4		0.41
MutPred		0.13		Loss of sheet (P = 0.0817);.;
MVP		0.76
MPC		0.79
ClinPred		0.45	T
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.048
gMVP		0.28
Mutation Taster		=89/11	polymorphism

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

dbSNP: rs748715099; hg19: chr6-43005512; COSMIC: COSV99538975; COSMIC: COSV99538975;