Genetic Variant CUBN:p.Glu3538Lys (chr10-16828957-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001081.4(CUBN):c.10612G>A(p.Glu3538Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000274 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

CUBN
NM_001081.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.11

Variant links:

Genes affected

CUBN (HGNC:2548): (cubilin) Cubilin (CUBN) acts as a receptor for intrinsic factor-vitamin B12 complexes. The role of receptor is supported by the presence of 27 CUB domains. Cubulin is located within the epithelium of intestine and kidney. Mutations in CUBN may play a role in autosomal recessive megaloblastic anemia. [provided by RefSeq, Jul 2008]

CUBN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.836

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CUBN	NM_001081.4 link	c.10612G>A	p.Glu3538Lys	missense_variant	Exon 66 of 67	ENST00000377833.10	NP_001072.2	O60494
CUBN	XM_011519709.3 link	c.6598G>A	p.Glu2200Lys	missense_variant	Exon 40 of 41		XP_011518011.1
CUBN	XM_011519710.3 link	c.6574G>A	p.Glu2192Lys	missense_variant	Exon 40 of 41		XP_011518012.1
CUBN	XM_011519711.4 link	c.6454G>A	p.Glu2152Lys	missense_variant	Exon 39 of 40		XP_011518013.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CUBN	ENST00000377833.10 link	c.10612G>A	p.Glu3538Lys	missense_variant	Exon 66 of 67	1	NM_001081.4	ENSP00000367064.4		O60494

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000835

AC:

AN:

251444

Hom.:

AF XY:

0.0000883

AC XY:

AN XY:

135888

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000392

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000274

AC:

AN:

1461892

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000201

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000290

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Imerslund-Grasbeck syndrome

Uncertain:1

Jun 29, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamic acid with lysine at codon 3538 of the CUBN protein (p.Glu3538Lys). The glutamic acid residue is moderately conserved and there is a small physicochemical difference between glutamic acid and lysine. This variant is present in population databases (rs756614749, ExAC 0.02%). This variant has not been reported in the literature in individuals with CUBN-related disease. 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

Benign

0.18

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.046

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.021

MetaRNN

Pathogenic

0.84

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.6

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.6

REVEL

Uncertain

0.33

Sift

Benign

0.12

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.82

MutPred

0.66

Gain of methylation at E3538 (P = 0.0191);

MVP

0.76

MPC

0.45

ClinPred

0.37

GERP RS

5.9

Varity_R

0.17

gMVP

0.85

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