chr5-159314825-AAAAT-A

Position:

• chr5-159314825-AAAAT-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BS1_Supporting

The NM_002187.3(IL12B):​c.*1272_*1275del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00255 in 152,362 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0025 (1 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: IL12B NM_002187.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.780

Genes affected

IL12B (HGNC:5970): (interleukin 12B) This gene encodes a subunit of interleukin 12, a cytokine that acts on T and natural killer cells, and has a broad array of biological activities. Interleukin 12 is a disulfide-linked heterodimer composed of the 40 kD cytokine receptor like subunit encoded by this gene, and a 35 kD subunit encoded by IL12A. This cytokine is expressed by activated macrophages that serve as an essential inducer of Th1 cells development. This cytokine has been found to be important for sustaining a sufficient number of memory/effector Th1 cells to mediate long-term protection to an intracellular pathogen. Overexpression of this gene was observed in the central nervous system of patients with multiple sclerosis (MS), suggesting a role of this cytokine in the pathogenesis of the disease. The promoter polymorphism of this gene has been reported to be associated with the severity of atopic and non-atopic asthma in children. [provided by RefSeq, Jul 2008]

LOC105377683 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00255 (388/152362) while in subpopulation AFR AF= 0.0089 (370/41584). AF 95% confidence interval is 0.00815. There are 1 homozygotes in gnomad4. There are 174 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL12B	NM_002187.3	c.*1272_*1275del		3_prime_UTR_variant	8/8	ENST00000231228.3
LOC105377683	XR_941138.3	n.401-377_401-374del		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL12B	ENST00000231228.3	c.*1272_*1275del		3_prime_UTR_variant	8/8	1	NM_002187.3	P1
IL12B	ENST00000696750.1	c.*1272_*1275del		3_prime_UTR_variant	5/5
IL12B	ENST00000696751.1	c.*1754_*1757del		3_prime_UTR_variant, NMD_transcript_variant	7/7
	ENST00000521472.6	n.289+3427_289+3430del		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.00255 AC: 388 AN: 152244 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00892

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000523

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00191

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 132 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 74

Gnomad4 EAS exome AF: 0.00

GnomAD4 genome AF: 0.00255 AC: 388 AN: 152362 Hom.: 1 Cov.: 32 AF XY: 0.00234 AC XY: 174 AN XY: 74518

Gnomad4 AFR AF: 0.00890

Gnomad4 AMR AF: 0.000523

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00189

Bravo AF: 0.00273

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Familial Atypical Mycobacteriosis, Autosomal Recessive 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: rs886060351; hg19: chr5-158741833;