Genetic Variant OLFML2B:p.Arg669Gln (chr1-161983922-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_015441.3(OLFML2B):c.2006G>A(p.Arg669Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000129 in 1,614,216 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

OLFML2B
NM_015441.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.91

Variant links:

Genes affected

OLFML2B (HGNC:24558): (olfactomedin like 2B) This gene encodes an olfactomedin domain-containing protein. Most olfactomedin domain-containing proteins are secreted glycoproteins. [provided by RefSeq, Dec 2016]

OLFML2B links:

Genome browser will be placed here

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
OLFML2B	NM_015441.3 link	c.2006G>A	p.Arg669Gln	missense_variant	Exon 8 of 8	ENST00000294794.8	NP_056256.1	Q68BL8-1
OLFML2B	NM_001347700.2 link	c.2012G>A	p.Arg671Gln	missense_variant	Exon 8 of 8		NP_001334629.1
OLFML2B	NM_001297713.2 link	c.2009G>A	p.Arg670Gln	missense_variant	Exon 8 of 8		NP_001284642.1	Q68BL8F2Z3N3B4DWE8
OLFML2B	XM_011509398.3 link	c.1286G>A	p.Arg429Gln	missense_variant	Exon 5 of 5		XP_011507700.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OLFML2B	ENST00000294794.8 link	c.2006G>A	p.Arg669Gln	missense_variant	Exon 8 of 8	1	NM_015441.3	ENSP00000294794.3		Q68BL8-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251472

Hom.:

AF XY:

0.0000441

AC XY:

AN XY:

135914

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000105

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000137

AC:

201

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000131

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000172

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152324

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000386

Hom.:

Bravo

AF:

0.0000151

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 18, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2006G>A (p.R669Q) alteration is located in exon 8 (coding exon 8) of the OLFML2B gene. This alteration results from a G to A substitution at nucleotide position 2006, causing the arginine (R) at amino acid position 669 to be replaced by a glutamine (Q). 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

0.14

BayesDel_addAF

Uncertain

0.085

BayesDel_noAF

Uncertain

0.090

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.46

T;D;.

Eigen

Pathogenic

0.74

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.91

D;D;D

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.45

T;T;T

MetaSVM

Uncertain

0.74

MutationAssessor

Uncertain

2.6

M;.;.

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.1

D;D;D

REVEL

Pathogenic

0.65

Sift

Uncertain

0.0080

D;D;T

Sift4G

Uncertain

0.0090

D;D;T

Polyphen

1.0

D;D;.

Vest4

0.46

MutPred

0.72

.;Loss of MoRF binding (P = 0.068);.;

MVP

0.92

MPC

0.60

ClinPred

0.59

GERP RS

5.4

Varity_R

0.32

gMVP

0.58

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