3-159993815-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000882.4(IL12A):c.577A>G(p.Met193Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: IL12A NM_000882.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.800

Genes affected

IL12A (HGNC:5969): (interleukin 12A) This gene encodes a subunit of a cytokine that acts on T and natural killer cells, and has a broad array of biological activities. The cytokine is a disulfide-linked heterodimer composed of the 35-kD subunit encoded by this gene, and a 40-kD subunit that is a member of the cytokine receptor family. This cytokine is required for the T-cell-independent induction of interferon (IFN)-gamma, and is important for the differentiation of both Th1 and Th2 cells. The responses of lymphocytes to this cytokine are mediated by the activator of transcription protein STAT4. Nitric oxide synthase 2A (NOS2A/NOS2) is found to be required for the signaling process of this cytokine in innate immunity. [provided by RefSeq, Jul 2008]

IL12A-AS1 (HGNC:49094): (IL12A antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10305148).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL12A	NM_001397992.1	c.475A>G	p.Met159Val	missense_variant	6/7	ENST00000699704.1
IL12A	NM_000882.4	c.577A>G	p.Met193Val	missense_variant	6/7
IL12A-AS1	NR_108088.1	n.1153+422T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL12A	ENST00000699704.1	c.475A>G	p.Met159Val	missense_variant	6/7		NM_001397992.1	P1
IL12A-AS1	ENST00000497452.5	n.1153+422T>C		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251370 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135874

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 30, 2023

The c.577A>G (p.M193V) alteration is located in exon 6 (coding exon 6) of the IL12A gene. This alteration results from a A to G substitution at nucleotide position 577, causing the methionine (M) at amino acid position 193 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
Cadd	Benign	2.7
Dann	Benign	0.65
DEOGEN2	Benign	0.025	T;.;.
Eigen	Benign	-0.87
Eigen_PC	Benign	-0.86
FATHMM_MKL	Benign	0.36	N
LIST_S2	Benign	0.82	T;T;T
M_CAP	Benign	0.0043	T
MetaRNN	Benign	0.10	T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-1.4	N;N;N
REVEL	Benign	0.058
Sift4G	Uncertain	0.012	D;D;D
Polyphen		0.041	B;.;.
Vest4		0.16
MVP		0.15
MPC		0.35
ClinPred		0.075	T
GERP RS		1.5
gMVP		0.31

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: rs1024513737; hg19: chr3-159711602;