Genetic Variant RGMB:p.Pro28Arg (chr5-98774153-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001366508.1(RGMB):c.83C>G(p.Pro28Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000223 in 1,345,874 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000022 ( 0 hom. )

Consequence

RGMB
NM_001366508.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.65

Variant links:

Genes affected

RGMB (HGNC:26896): (repulsive guidance molecule BMP co-receptor b) RGMB is a glycosylphosphatidylinositol (GPI)-anchored member of the repulsive guidance molecule family (see RGMA, MIM 607362) and contributes to the patterning of the developing nervous system (Samad et al., 2005 [PubMed 15671031]).[supplied by OMIM, Apr 2009]

RGMB links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RGMB	NM_001366508.1 link	c.83C>G	p.Pro28Arg	missense_variant	Exon 1 of 3	ENST00000513185.3	NP_001353437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RGMB	ENST00000513185.3 link	c.83C>G	p.Pro28Arg	missense_variant	Exon 1 of 3	2	NM_001366508.1	ENSP00000423256.1	Q6NW40
RGMB	ENST00000308234.11 link	c.206C>G	p.Pro69Arg	missense_variant	Exon 3 of 5	1		ENSP00000308219.7	J3KNF6
RGMB	ENST00000434027.2 link	n.854C>G		non_coding_transcript_exon_variant	Exon 3 of 4	2
RGMB	ENST00000504776.5 link	n.487C>G		non_coding_transcript_exon_variant	Exon 3 of 4	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000214

AC:

AN:

93564

Hom.:

AF XY:

0.00

AC XY:

AN XY:

52596

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000995

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:

0.00000223

AC:

AN:

1345874

Hom.:

Cov.:

AF XY:

0.00000151

AC XY:

AN XY:

663774

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000622

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.42e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 03, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.206C>G (p.P69R) alteration is located in exon 3 (coding exon 2) of the RGMB gene. This alteration results from a C to G substitution at nucleotide position 206, causing the proline (P) at amino acid position 69 to be replaced by an arginine (R). 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

0.059

BayesDel_addAF

Uncertain

0.057

BayesDel_noAF

Uncertain

0.050

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.18

.;T

Eigen

Benign

-0.10

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.22

LIST_S2

Benign

0.49

T;T

M_CAP

Pathogenic

0.89

MetaRNN

Uncertain

0.57

D;D

MetaSVM

Uncertain

-0.10

MutationAssessor

Benign

0.90

.;L

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-1.2

N;N

REVEL

Uncertain

0.44

Sift

Uncertain

0.016

D;T

Sift4G

Benign

0.30

T;T

Polyphen

0.82

.;P

Vest4

0.34

MutPred

0.56

.;Loss of glycosylation at P28 (P = 0.0025);

MVP

0.90

MPC

0.49

ClinPred

0.52

GERP RS

3.0

Varity_R

0.087

gMVP

0.34

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