rs4781011

Positions:

• chr16-10881454-T-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000246.4(CIITA):​c.52+4072T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.619 in 152,044 control chromosomes in the GnomAD database, including 31,038 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.62 (31038 hom., cov: 32)
• Consequence: CIITA NM_000246.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.337

Genes affected

CIITA (HGNC:7067): (class II major histocompatibility complex transactivator) This gene encodes a protein with an acidic transcriptional activation domain, 4 LRRs (leucine-rich repeats) and a GTP binding domain. The protein is located in the nucleus and acts as a positive regulator of class II major histocompatibility complex gene transcription, and is referred to as the "master control factor" for the expression of these genes. The protein also binds GTP and uses GTP binding to facilitate its own transport into the nucleus. Once in the nucleus it does not bind DNA but rather uses an intrinsic acetyltransferase (AT) activity to act in a coactivator-like fashion. Mutations in this gene have been associated with bare lymphocyte syndrome type II (also known as hereditary MHC class II deficiency or HLA class II-deficient combined immunodeficiency), increased susceptibility to rheumatoid arthritis, multiple sclerosis, and possibly myocardial infarction. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.733 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CIITA	NM_000246.4	c.52+4072T>G		intron_variant		ENST00000324288.14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CIITA	ENST00000324288.14	c.52+4072T>G		intron_variant		1	NM_000246.4	P4
	ENST00000572017.1	n.438+6861A>C		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.619 AC: 94077 AN: 151926 Hom.: 31040 Cov.: 32

Gnomad AFR AF: 0.483

Gnomad AMI AF: 0.793

Gnomad AMR AF: 0.513

Gnomad ASJ AF: 0.733

Gnomad EAS AF: 0.123

Gnomad SAS AF: 0.592

Gnomad FIN AF: 0.733

Gnomad MID AF: 0.741

Gnomad NFE AF: 0.738

Gnomad OTH AF: 0.650

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.619 AC: 94107 AN: 152044 Hom.: 31038 Cov.: 32 AF XY: 0.612 AC XY: 45499 AN XY: 74300

Gnomad4 AFR AF: 0.483

Gnomad4 AMR AF: 0.512

Gnomad4 ASJ AF: 0.733

Gnomad4 EAS AF: 0.124

Gnomad4 SAS AF: 0.592

Gnomad4 FIN AF: 0.733

Gnomad4 NFE AF: 0.738

Gnomad4 OTH AF: 0.647

Alfa AF: 0.703 Hom.: 62605

Bravo AF: 0.594

Asia WGS AF: 0.426 AC: 1485 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	5.3
DANN	Benign	0.73

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: rs4781011; hg19: chr16-10975311;