rs750195672

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2PM5PP2PP3_Strong

The NM_000214.3(JAG1):​c.925G>T​(p.Gly309Trp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G309R) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 32)

Consequence

JAG1
NM_000214.3 missense

Scores

12
6
1

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.21
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr20-10652212-C-G is described in Lovd as [Likely_pathogenic].
PP2
Missense variant in the JAG1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 32 curated pathogenic missense variants (we use a threshold of 10). The gene has 65 curated benign missense variants. Gene score misZ: 3.2459 (above the threshold of 3.09). Trascript score misZ: 5.2848 (above the threshold of 3.09). GenCC associations: The gene is linked to tetralogy of fallot, Alagille syndrome due to a JAG1 point mutation, Charcot-Marie-Tooth disease, axonal, Type 2HH.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.946

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
JAG1NM_000214.3 linkc.925G>T p.Gly309Trp missense_variant Exon 7 of 26 ENST00000254958.10 NP_000205.1 P78504-1Q99740

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
JAG1ENST00000254958.10 linkc.925G>T p.Gly309Trp missense_variant Exon 7 of 26 1 NM_000214.3 ENSP00000254958.4 P78504-1
JAG1ENST00000423891.6 linkn.791G>T non_coding_transcript_exon_variant Exon 5 of 25 2
JAG1ENST00000617965.2 linkn.294G>T non_coding_transcript_exon_variant Exon 2 of 17 5

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Alagille syndrome due to a JAG1 point mutation Uncertain:1
Jun 23, 2021
Baylor Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.42
BayesDel_addAF
Pathogenic
0.27
D
BayesDel_noAF
Pathogenic
0.15
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.96
D
Eigen
Uncertain
0.62
Eigen_PC
Uncertain
0.42
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Pathogenic
0.38
D
MetaRNN
Pathogenic
0.95
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
4.5
H
PrimateAI
Uncertain
0.63
T
PROVEAN
Pathogenic
-7.5
D
REVEL
Pathogenic
0.69
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.64
MutPred
0.81
Loss of disorder (P = 0.0034);
MVP
0.97
MPC
2.5
ClinPred
1.0
D
GERP RS
3.4
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.86
gMVP
0.81

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr20-10632860; API