Variant chr21-25698854-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_021219.4(JAM2):c.572C>T(p.Thr191Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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: 0.0000041 ( 0 hom. )

Consequence

JAM2
NM_021219.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.07

Variant links:

Genes affected

JAM2 (HGNC:14686): (junctional adhesion molecule 2) This gene belongs to the immunoglobulin superfamily, and the junctional adhesion molecule (JAM) family. The protein encoded by this gene is a type I membrane protein that is localized at the tight junctions of both epithelial and endothelial cells. It acts as an adhesive ligand for interacting with a variety of immune cell types, and may play a role in lymphocyte homing to secondary lymphoid organs. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jul 2012]

JAM2 links:

LOC124905002 (HGNC:):

LOC124905002 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28869203).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
JAM2	NM_021219.4 linkuse as main transcript	c.572C>T	p.Thr191Ile	missense_variant	5/10	ENST00000480456.6	NP_067042.1
LOC124905002	XR_007067827.1 linkuse as main transcript	n.2842-2020G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
JAM2	ENST00000480456.6 linkuse as main transcript	c.572C>T	p.Thr191Ile	missense_variant	5/10	1	NM_021219.4	ENSP00000420419	P1	P57087-1
JAM2	ENST00000400532.5 linkuse as main transcript	c.572C>T	p.Thr191Ile	missense_variant	5/10	1		ENSP00000383376		P57087-3
JAM2	ENST00000312957.9 linkuse as main transcript	c.464C>T	p.Thr155Ile	missense_variant	4/9	2		ENSP00000318416		P57087-2
JAM2	ENST00000460679.5 linkuse as main transcript	c.440C>T	p.Thr147Ile	missense_variant, NMD_transcript_variant	3/9	3		ENSP00000436801

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249522

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135386

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461812

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727222

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

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

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 19, 2024

The c.572C>T (p.T191I) alteration is located in exon 5 (coding exon 5) of the JAM2 gene. This alteration results from a C to T substitution at nucleotide position 572, causing the threonine (T) at amino acid position 191 to be replaced by an isoleucine (I). 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

0.096

BayesDel_addAF

Benign

-0.021

BayesDel_noAF

Benign

-0.27

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

.;T;.

Eigen

Benign

0.073

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.65

T;T;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.29

T;T;T

MetaSVM

Benign

-0.45

MutationAssessor

Benign

0.66

N;N;.

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-3.2

D;D;.

REVEL

Benign

0.22

Sift

Benign

0.29

T;T;.

Sift4G

Uncertain

0.032

D;T;D

Polyphen

0.62

.;P;.

Vest4

0.19

MutPred

0.48

Loss of disorder (P = 0.0232);Loss of disorder (P = 0.0232);.;

MVP

0.88

MPC

0.26

ClinPred

0.80

GERP RS

5.0

Varity_R

0.18

gMVP

0.50

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

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