Genetic Variant BCAM:p.Arg140Gly (chr19-44812376-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005581.5(BCAM):c.418C>G(p.Arg140Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,586 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

BCAM
NM_005581.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.80

Variant links:

Genes affected

BCAM (HGNC:6722): (basal cell adhesion molecule (Lutheran blood group)) This gene encodes Lutheran blood group glycoprotein, a member of the immunoglobulin superfamily and a receptor for the extracellular matrix protein, laminin. The protein contains five extracellular immunoglobulin domains, a single transmembrane domain, and a short C-terminal cytoplasmic tail. This protein may play a role in epithelial cell cancer and in vaso-occlusion of red blood cells in sickle cell disease. Polymorphisms in this gene define some of the antigens in the Lutheran system and also the Auberger system. Inactivating variants of this gene result in the recessive Lutheran null phenotype, Lu(a-b-), of the Lutheran blood group. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

BCAM links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.115721196).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCAM	NM_005581.5 link	c.418C>G	p.Arg140Gly	missense_variant	Exon 3 of 15	ENST00000270233.12	NP_005572.2	P50895
BCAM	NM_001013257.2 link	c.418C>G	p.Arg140Gly	missense_variant	Exon 3 of 14		NP_001013275.1	P50895A0A087WXM8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BCAM	ENST00000270233.12 link	c.418C>G	p.Arg140Gly	missense_variant	Exon 3 of 15	1	NM_005581.5	ENSP00000270233.5	P50895
BCAM	ENST00000611077.5 link	c.418C>G	p.Arg140Gly	missense_variant	Exon 3 of 14	5		ENSP00000481153.1	A0A087WXM8
BCAM	ENST00000591520.6 link	c.355C>G	p.Arg119Gly	missense_variant	Exon 3 of 7	3		ENSP00000467100.2	K7ENU8
BCAM	ENST00000588603.1 link	n.413C>G		non_coding_transcript_exon_variant	Exon 3 of 4	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249290

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

135030

show subpopulations

Gnomad AFR exome

AF:

0.0000624

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000342

AC:

AN:

1461586

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727108

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000193

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.418C>G (p.R140G) alteration is located in exon 3 (coding exon 3) of the BCAM gene. This alteration results from a C to G substitution at nucleotide position 418, causing the arginine (R) at amino acid position 140 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.36

CADD

Benign

5.7

DANN

Benign

0.60

DEOGEN2

Benign

0.16

T;T;T

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.71

T;T;T

M_CAP

Benign

0.030

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;.;.

PrimateAI

Benign

0.42

PROVEAN

Benign

-2.0

N;.;.

REVEL

Benign

0.13

Sift

Benign

0.19

T;.;.

Sift4G

Uncertain

0.048

D;T;T

Polyphen

0.50

P;.;.

Vest4

0.22

MutPred

0.58

Loss of stability (P = 0.0421);Loss of stability (P = 0.0421);.;

MVP

0.061

MPC

0.55

ClinPred

0.081

GERP RS

-5.0

Varity_R

0.29

gMVP

0.55

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

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