16-10901993-G-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000246.4(CIITA):​c.482-45G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.545 in 1,611,356 control chromosomes in the GnomAD database, including 245,413 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.47 ( 17844 hom., cov: 31)
Exomes 𝑓: 0.55 ( 227569 hom. )

Consequence

CIITA
NM_000246.4 intron

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.211
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 16-10901993-G-T is Benign according to our data. Variant chr16-10901993-G-T is described in ClinVar as [Benign]. Clinvar id is 1184676.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.562 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
CIITANM_000246.4 linkuse as main transcriptc.482-45G>T intron_variant ENST00000324288.14 NP_000237.2 P33076A0A0B4J1S1Q66X48

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
CIITAENST00000324288.14 linkuse as main transcriptc.482-45G>T intron_variant 1 NM_000246.4 ENSP00000316328.8 A0A0B4J1S1

Frequencies

GnomAD3 genomes
AF:
0.467
AC:
70886
AN:
151726
Hom.:
17843
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.295
Gnomad AMI
AF:
0.754
Gnomad AMR
AF:
0.388
Gnomad ASJ
AF:
0.457
Gnomad EAS
AF:
0.429
Gnomad SAS
AF:
0.522
Gnomad FIN
AF:
0.586
Gnomad MID
AF:
0.472
Gnomad NFE
AF:
0.567
Gnomad OTH
AF:
0.465
GnomAD3 exomes
AF:
0.497
AC:
123574
AN:
248642
Hom.:
32477
AF XY:
0.512
AC XY:
68953
AN XY:
134720
show subpopulations
Gnomad AFR exome
AF:
0.285
Gnomad AMR exome
AF:
0.324
Gnomad ASJ exome
AF:
0.451
Gnomad EAS exome
AF:
0.434
Gnomad SAS exome
AF:
0.531
Gnomad FIN exome
AF:
0.592
Gnomad NFE exome
AF:
0.568
Gnomad OTH exome
AF:
0.499
GnomAD4 exome
AF:
0.553
AC:
807245
AN:
1459512
Hom.:
227569
Cov.:
41
AF XY:
0.554
AC XY:
402406
AN XY:
726158
show subpopulations
Gnomad4 AFR exome
AF:
0.290
Gnomad4 AMR exome
AF:
0.330
Gnomad4 ASJ exome
AF:
0.452
Gnomad4 EAS exome
AF:
0.408
Gnomad4 SAS exome
AF:
0.539
Gnomad4 FIN exome
AF:
0.580
Gnomad4 NFE exome
AF:
0.579
Gnomad4 OTH exome
AF:
0.520
GnomAD4 genome
AF:
0.467
AC:
70904
AN:
151844
Hom.:
17844
Cov.:
31
AF XY:
0.465
AC XY:
34550
AN XY:
74234
show subpopulations
Gnomad4 AFR
AF:
0.295
Gnomad4 AMR
AF:
0.388
Gnomad4 ASJ
AF:
0.457
Gnomad4 EAS
AF:
0.429
Gnomad4 SAS
AF:
0.523
Gnomad4 FIN
AF:
0.586
Gnomad4 NFE
AF:
0.567
Gnomad4 OTH
AF:
0.463
Alfa
AF:
0.514
Hom.:
7944
Bravo
AF:
0.445
Asia WGS
AF:
0.388
AC:
1349
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
MHC class II deficiency Benign:1
Benign, criteria provided, single submitterclinical testingGenome-Nilou LabJul 10, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
1.7
DANN
Benign
0.72

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs6498124; hg19: chr16-10995850; COSMIC: COSV60853906; COSMIC: COSV60853906; API