Genetic Variant JAG1:p.Cys1002Trp (chr20-10641155-G-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_000214.3(JAG1):c.3006C>G(p.Cys1002Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,644 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C1002S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

JAG1
NM_000214.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.833

Publications

0 publications found

Variant links:

Genes affected

JAG1 (HGNC:6188): (jagged canonical Notch ligand 1) The jagged 1 protein encoded by JAG1 is the human homolog of the Drosophilia jagged protein. Human jagged 1 is the ligand for the receptor notch 1, the latter is involved in signaling processes. Mutations that alter the jagged 1 protein cause Alagille syndrome. Jagged 1 signalling through notch 1 has also been shown to play a role in hematopoiesis. [provided by RefSeq, Nov 2019]

JAG1 Gene-Disease associations (from GenCC):

Alagille syndrome due to a JAG1 point mutation
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
Charcot-Marie-Tooth disease, axonal, Type 2HH
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
tetralogy of fallot
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

JAG1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.988

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JAG1	NM_000214.3 link	c.3006C>G	p.Cys1002Trp	missense_variant	Exon 24 of 26	ENST00000254958.10	NP_000205.1	P78504-1Q99740

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
JAG1	ENST00000254958.10 link	c.3006C>G	p.Cys1002Trp	missense_variant	Exon 24 of 26	1	NM_000214.3	ENSP00000254958.4	P78504-1
JAG1	ENST00000423891.6 link	n.2872C>G		non_coding_transcript_exon_variant	Exon 22 of 25	2
JAG1	ENST00000617357.1 link	n.122C>G		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461644

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727120

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53212

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111970

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.49

BayesDel_noAF

Pathogenic

0.46

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.95

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.11

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.89

M_CAP

Pathogenic

0.59

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.82

MutationAssessor

Pathogenic

3.4

PhyloP100

0.83

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-11

REVEL

Pathogenic

0.88

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.77

MutPred

0.85

Gain of catalytic residue at A1001 (P = 0.1229);

MVP

0.98

MPC

1.6

ClinPred

1.0

GERP RS

0.10

Varity_R

0.92

gMVP

0.81

Mutation Taster

=29/71

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over