chr20-10638527-AAAAC-A

Position:

• chr20-10638527-AAAAC-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6 BS1 BS2

The NM_000214.3(JAG1):​c.*967_*970del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0018 in 152,336 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0018 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: JAG1 NM_000214.3 3_prime_UTR
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:1
• Conservation: PhyloP100: 0.621

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 -9 ACMG points.

• BP6: Variant 20-10638527-AAAAC-A is Benign according to our data. Variant chr20-10638527-AAAAC-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 337726.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0018 (274/152336) while in subpopulation AFR AF= 0.00561 (233/41570). AF 95% confidence interval is 0.00501. There are 0 homozygotes in gnomad4. There are 125 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 274 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JAG1	NM_000214.3	c.*967_*970del		3_prime_UTR_variant	26/26	ENST00000254958.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JAG1	ENST00000254958.10	c.*967_*970del		3_prime_UTR_variant	26/26	1	NM_000214.3	P1
JAG1	ENST00000423891.6	n.3550-564_3550-561del		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.00180 AC: 274 AN: 152218 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00562

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000353

Gnomad OTH AF: 0.00239

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 448 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 276

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00180 AC: 274 AN: 152336 Hom.: 0 Cov.: 33 AF XY: 0.00168 AC XY: 125 AN XY: 74486

Gnomad4 AFR AF: 0.00560

Gnomad4 AMR AF: 0.000653

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.000353

Gnomad4 OTH AF: 0.00237

Alfa AF: 0.00164 Hom.: 1

Bravo AF: 0.00194

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2 Benign:1

Revision: criteria provided, conflicting classifications

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

- -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Dec 01, 2022

JAG1: BS1 -

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: rs748163677; hg19: chr20-10619175;