chr20-10638366-A-C

Position:

• chr20-10638366-A-C

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BA1

The NM_000214.3(JAG1):​c.*1132T>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.271 in 152,576 control chromosomes in the GnomAD database, including 6,308 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.27 (6278 hom., cov: 33)
  • Exomes 𝑓: 0.38 (30 hom.)
• Consequence: JAG1 NM_000214.3 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 2.27

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 Benign. Variant got -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP6: Variant 20-10638366-A-C is Benign according to our data. Variant chr20-10638366-A-C is described in ClinVar as [Benign]. Clinvar id is 337723.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.334 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JAG1	NM_000214.3	c.*1132T>G		3_prime_UTR_variant	26/26	ENST00000254958.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JAG1	ENST00000254958.10	c.*1132T>G		3_prime_UTR_variant	26/26	1	NM_000214.3	P1
JAG1	ENST00000423891.6	n.3550-399T>G		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.271 AC: 41228 AN: 152028 Hom.: 6268 Cov.: 33

Gnomad AFR AF: 0.136

Gnomad AMI AF: 0.492

Gnomad AMR AF: 0.326

Gnomad ASJ AF: 0.294

Gnomad EAS AF: 0.162

Gnomad SAS AF: 0.262

Gnomad FIN AF: 0.314

Gnomad MID AF: 0.335

Gnomad NFE AF: 0.338

Gnomad OTH AF: 0.304

GnomAD4 exome AF: 0.384 AC: 165 AN: 430 Hom.: 30 Cov.: 0 AF XY: 0.388 AC XY: 101 AN XY: 260

Gnomad4 FIN exome AF: 0.382

Gnomad4 NFE exome AF: 0.500

Gnomad4 OTH exome AF: 0.500

GnomAD4 genome AF: 0.271 AC: 41255 AN: 152146 Hom.: 6278 Cov.: 33 AF XY: 0.271 AC XY: 20187 AN XY: 74368

Gnomad4 AFR AF: 0.137

Gnomad4 AMR AF: 0.326

Gnomad4 ASJ AF: 0.294

Gnomad4 EAS AF: 0.161

Gnomad4 SAS AF: 0.262

Gnomad4 FIN AF: 0.314

Gnomad4 NFE AF: 0.338

Gnomad4 OTH AF: 0.305

Alfa AF: 0.330 Hom.: 10810

Bravo AF: 0.262

Asia WGS AF: 0.208 AC: 724 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Isolated Nonsyndromic Congenital Heart Disease Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided Benign:1

Benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	16
DANN	Benign	0.88

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: rs7828; hg19: chr20-10619014;