rs561841137

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000246.4(CIITA):​c.1559C>T​(p.Ala520Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000423 in 1,607,302 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A520S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

CIITA
NM_000246.4 missense

Scores

3
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 0.734

Publications

2 publications found
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]
CIITA Gene-Disease associations (from GenCC):
  • MHC class II deficiency
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.13513657).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000246.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CIITA
NM_000246.4
MANE Select
c.1559C>Tp.Ala520Val
missense
Exon 11 of 20NP_000237.2
CIITA
NM_001286402.1
c.1562C>Tp.Ala521Val
missense
Exon 11 of 20NP_001273331.1A0A087X2I7
CIITA
NM_001379332.1
c.1562C>Tp.Ala521Val
missense
Exon 11 of 20NP_001366261.1A0A087X2I7

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CIITA
ENST00000324288.14
TSL:1 MANE Select
c.1559C>Tp.Ala520Val
missense
Exon 11 of 20ENSP00000316328.8
CIITA
ENST00000381835.9
TSL:1
c.860-1932C>T
intron
N/AENSP00000371257.5P33076-3
CIITA
ENST00000573309.5
TSL:1
n.1530C>T
non_coding_transcript_exon
Exon 10 of 10

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152158
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.000103
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000413
AC:
10
AN:
241872
AF XY:
0.0000453
show subpopulations
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000901
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000412
AC:
60
AN:
1455026
Hom.:
0
Cov.:
65
AF XY:
0.0000290
AC XY:
21
AN XY:
724134
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26124
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86250
European-Finnish (FIN)
AF:
0.0000428
AC:
2
AN:
46686
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5766
European-Non Finnish (NFE)
AF:
0.0000459
AC:
51
AN:
1111950
Other (OTH)
AF:
0.0000497
AC:
3
AN:
60356
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
4
8
11
15
19
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000525
AC:
8
AN:
152276
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74440
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41570
American (AMR)
AF:
0.00
AC:
0
AN:
15306
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5168
South Asian (SAS)
AF:
0.000208
AC:
1
AN:
4818
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000103
AC:
7
AN:
68014
Other (OTH)
AF:
0.00
AC:
0
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.512
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000462
Hom.:
0
Bravo
AF:
0.0000453
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ExAC
AF:
0.0000495
AC:
6
EpiCase
AF:
0.000164
EpiControl
AF:
0.000237

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
MHC class II deficiency (2)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.094
BayesDel_addAF
Benign
-0.29
T
BayesDel_noAF
Benign
-0.45
CADD
Benign
15
DANN
Uncertain
0.98
Eigen
Benign
-0.52
Eigen_PC
Benign
-0.54
FATHMM_MKL
Benign
0.11
N
LIST_S2
Benign
0.79
T
M_CAP
Uncertain
0.097
D
MetaRNN
Benign
0.14
T
MetaSVM
Benign
-0.74
T
PhyloP100
0.73
PrimateAI
Benign
0.38
T
PROVEAN
Benign
-0.95
N
REVEL
Uncertain
0.31
Sift
Benign
0.14
T
Sift4G
Benign
0.22
T
Vest4
0.11
MVP
0.85
MPC
0.16
ClinPred
0.050
T
GERP RS
4.3
gMVP
0.28
Mutation Taster
=92/8
polymorphism

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

Other links and lift over

dbSNP: rs561841137; hg19: chr16-11000908; COSMIC: COSV100161872; COSMIC: COSV100161872; API