rs2233853

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001025603.2(RFX5):​c.900C>T​(p.Leu300Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0015 in 1,611,864 control chromosomes in the GnomAD database, including 39 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0081 ( 20 hom., cov: 32)
Exomes 𝑓: 0.00081 ( 19 hom. )

Consequence

RFX5
NM_001025603.2 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -1.96

Publications

0 publications found
Variant links:
Genes affected
RFX5 (HGNC:9986): (regulatory factor X5) A lack of MHC-II expression results in a severe immunodeficiency syndrome called MHC-II deficiency, or the bare lymphocyte syndrome (BLS; MIM 209920). At least 4 complementation groups have been identified in B-cell lines established from patients with BLS. The molecular defects in complementation groups B, C, and D all lead to a deficiency in RFX, a nuclear protein complex that binds to the X box of MHC-II promoters. The lack of RFX binding activity in complementation group C results from mutations in the RFX5 gene encoding the 75-kD subunit of RFX (Steimle et al., 1995). RFX5 is the fifth member of the growing family of DNA-binding proteins sharing a novel and highly characteristic DNA-binding domain called the RFX motif. Multiple alternatively spliced transcript variants have been found but the full-length natures of only two have been determined. [provided by RefSeq, Jul 2008]
RFX5-AS1 (HGNC:40503): (RFX5 antisense RNA 1)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.84).
BP6
Variant 1-151343137-G-A is Benign according to our data. Variant chr1-151343137-G-A is described in ClinVar as Benign. ClinVar VariationId is 471258.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.96 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00809 (1232/152336) while in subpopulation AFR AF = 0.028 (1163/41572). AF 95% confidence interval is 0.0266. There are 20 homozygotes in GnomAd4. There are 568 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 20 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RFX5NM_001025603.2 linkc.900C>T p.Leu300Leu synonymous_variant Exon 11 of 11 ENST00000452671.7 NP_001020774.1 P48382-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RFX5ENST00000452671.7 linkc.900C>T p.Leu300Leu synonymous_variant Exon 11 of 11 1 NM_001025603.2 ENSP00000389130.2 P48382-1

Frequencies

GnomAD3 genomes
AF:
0.00807
AC:
1228
AN:
152218
Hom.:
20
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0280
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00334
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:
0.00574
GnomAD2 exomes
AF:
0.00192
AC:
473
AN:
245866
AF XY:
0.00138
show subpopulations
Gnomad AFR exome
AF:
0.0279
Gnomad AMR exome
AF:
0.00116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000145
Gnomad OTH exome
AF:
0.000497
GnomAD4 exome
AF:
0.000807
AC:
1178
AN:
1459528
Hom.:
19
Cov.:
33
AF XY:
0.000707
AC XY:
513
AN XY:
726002
show subpopulations
African (AFR)
AF:
0.0281
AC:
938
AN:
33440
American (AMR)
AF:
0.00139
AC:
62
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39700
South Asian (SAS)
AF:
0.0000928
AC:
8
AN:
86188
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52470
Middle Eastern (MID)
AF:
0.000866
AC:
4
AN:
4618
European-Non Finnish (NFE)
AF:
0.0000387
AC:
43
AN:
1111996
Other (OTH)
AF:
0.00202
AC:
122
AN:
60256
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.480
Heterozygous variant carriers
0
78
155
233
310
388
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
30
60
90
120
150
<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:
0.00809
AC:
1232
AN:
152336
Hom.:
20
Cov.:
32
AF XY:
0.00762
AC XY:
568
AN XY:
74496
show subpopulations
African (AFR)
AF:
0.0280
AC:
1163
AN:
41572
American (AMR)
AF:
0.00333
AC:
51
AN:
15304
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5190
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10626
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68030
Other (OTH)
AF:
0.00568
AC:
12
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.498
Heterozygous variant carriers
0
61
122
184
245
306
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
20
40
60
80
100
<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:
0.00482
Hom.:
3
Bravo
AF:
0.00969
Asia WGS
AF:
0.00375
AC:
13
AN:
3478
EpiCase
AF:
0.0000545
EpiControl
AF:
0.000178

ClinVar

Significance: Benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

MHC class II deficiency Benign:3
Jan 13, 2018
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Apr 11, 2023
Genome-Nilou Lab
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jan 23, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Benign:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.84
CADD
Benign
0.20
DANN
Benign
0.77
PhyloP100
-2.0
Mutation Taster
=100/0
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: rs2233853; hg19: chr1-151315613; API