chr20-10638848-GATT-G

Position:

• chr20-10638848-GATT-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_Supporting BS2

The NM_000214.3(JAG1):​c.*647_*649del variant causes a 3 prime UTR change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00106 in 153,072 control chromosomes in the GnomAD database, including 6 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0011 (6 hom., cov: 33)
  • Exomes 𝑓: 0.0013 (0 hom.)
• Consequence: JAG1 NM_000214.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 8.72

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00106 (162/152282) while in subpopulation NFE AF= 0.00121 (82/68012). AF 95% confidence interval is 0.000995. There are 6 homozygotes in gnomad4. There are 73 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 162 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JAG1	NM_000214.3	c.*647_*649del		3_prime_UTR_variant	26/26	ENST00000254958.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JAG1	ENST00000254958.10	c.*647_*649del		3_prime_UTR_variant	26/26	1	NM_000214.3	P1
JAG1	ENST00000423891.6	n.3549+621_3549+623del		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.00106 AC: 162 AN: 152164 Hom.: 6 Cov.: 33

Gnomad AFR AF: 0.000217

Gnomad AMI AF: 0.0757

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000944

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00121

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00127 AC: 1 AN: 790 Hom.: 0 AF XY: 0.00222 AC XY: 1 AN XY: 450

Gnomad4 AMR 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: 0.00385

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00106 AC: 162 AN: 152282 Hom.: 6 Cov.: 33 AF XY: 0.000980 AC XY: 73 AN XY: 74462

Gnomad4 AFR AF: 0.000217

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000944

Gnomad4 NFE AF: 0.00121

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000540 Hom.: 0

Bravo AF: 0.00103

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Arteriohepatic dysplasia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Isolated Nonsyndromic Congenital Heart Disease Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

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

Other links and lift over

dbSNP: rs572952606; hg19: chr20-10619496;