rs200250516

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_014254.3(RXYLT1):​c.184G>A​(p.Glu62Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000282 in 1,598,180 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

RXYLT1
NM_014254.3 missense

Scores

1
16

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 1.58

Publications

0 publications found
Variant links:
Genes affected
RXYLT1 (HGNC:13530): (ribitol xylosyltransferase 1) This gene encodes a type II transmembrane protein that is thought to have glycosyltransferase function. Mutations in this gene result in cobblestone lissencephaly. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, May 2013]
RXYLT1 Gene-Disease associations (from GenCC):
  • muscle-eye-brain disease
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type a, 10
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
  • muscular dystrophy-dystroglycanopathy, type A
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.01632914).
BS1
Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.0000986 (15/152178) while in subpopulation AMR AF = 0.000981 (15/15296). AF 95% confidence interval is 0.000604. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014254.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
RXYLT1
NM_014254.3
MANE Select
c.184G>Ap.Glu62Lys
missense
Exon 2 of 6NP_055069.1
RXYLT1
NM_001278237.2
c.-597G>A
5_prime_UTR
Exon 2 of 6NP_001265166.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
RXYLT1
ENST00000261234.11
TSL:1 MANE Select
c.184G>Ap.Glu62Lys
missense
Exon 2 of 6ENSP00000261234.6
RXYLT1
ENST00000536219.5
TSL:1
n.303G>A
non_coding_transcript_exon
Exon 2 of 3
RXYLT1
ENST00000537373.6
TSL:1
n.66G>A
non_coding_transcript_exon
Exon 2 of 6ENSP00000440280.2

Frequencies

GnomAD3 genomes
AF:
0.0000986
AC:
15
AN:
152060
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000982
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000669
AC:
16
AN:
238988
AF XY:
0.0000695
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000515
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000207
AC:
30
AN:
1446002
Hom.:
0
Cov.:
30
AF XY:
0.0000236
AC XY:
17
AN XY:
719114
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32652
American (AMR)
AF:
0.000672
AC:
28
AN:
41686
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25742
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38712
South Asian (SAS)
AF:
0.0000120
AC:
1
AN:
83036
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53028
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5706
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1105804
Other (OTH)
AF:
0.0000168
AC:
1
AN:
59636
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.455
Heterozygous variant carriers
0
1
3
4
6
7
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
AF:
0.0000986
AC:
15
AN:
152178
Hom.:
0
Cov.:
33
AF XY:
0.000121
AC XY:
9
AN XY:
74394
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41516
American (AMR)
AF:
0.000981
AC:
15
AN:
15296
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4798
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10582
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68008
Other (OTH)
AF:
0.00
AC:
0
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.492
Heterozygous variant carriers
0
1
2
4
5
6
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.0000869
ExAC
AF:
0.0000247
AC:
3

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
not provided (2)
-
1
-
Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.086
BayesDel_addAF
Benign
-0.51
T
BayesDel_noAF
Benign
-0.62
CADD
Benign
17
DANN
Benign
0.57
DEOGEN2
Benign
0.0024
T
Eigen
Benign
-0.69
Eigen_PC
Benign
-0.64
FATHMM_MKL
Benign
0.28
N
LIST_S2
Benign
0.57
T
M_CAP
Benign
0.0075
T
MetaRNN
Benign
0.016
T
MetaSVM
Benign
-1.0
T
PhyloP100
1.6
PrimateAI
Uncertain
0.58
T
PROVEAN
Benign
-0.21
N
REVEL
Benign
0.032
Sift
Benign
0.92
T
Sift4G
Benign
0.94
T
Polyphen
0.013
B
Vest4
0.26
MutPred
0.23
Gain of ubiquitination at E62 (P = 0.0069)
MVP
0.061
MPC
0.20
ClinPred
0.031
T
GERP RS
1.4
Varity_R
0.042
gMVP
0.24
Mutation Taster
=96/4
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: rs200250516; hg19: chr12-64174813; API