chr12-63802195-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_014254.3(RXYLT1):​c.533C>T​(p.Thr178Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,786 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T178S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RXYLT1
NM_014254.3 missense

Scores

7
11

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.36
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.36163604).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
RXYLT1NM_014254.3 linkuse as main transcriptc.533C>T p.Thr178Ile missense_variant 4/6 ENST00000261234.11
RXYLT1XM_047428078.1 linkuse as main transcriptc.224C>T p.Thr75Ile missense_variant 3/5
RXYLT1NM_001278237.2 linkuse as main transcriptc.-248C>T 5_prime_UTR_variant 4/6
RXYLT1XM_047428079.1 linkuse as main transcript downstream_gene_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
RXYLT1ENST00000261234.11 linkuse as main transcriptc.533C>T p.Thr178Ile missense_variant 4/61 NM_014254.3 P1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461786
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
727180
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
31
Bravo
AF:
0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.17
BayesDel_addAF
Uncertain
0.065
T
BayesDel_noAF
Benign
-0.14
CADD
Uncertain
23
DANN
Uncertain
1.0
DEOGEN2
Benign
0.029
T
Eigen
Uncertain
0.58
Eigen_PC
Uncertain
0.58
FATHMM_MKL
Uncertain
0.77
D
LIST_S2
Benign
0.81
T
M_CAP
Benign
0.029
D
MetaRNN
Benign
0.36
T
MetaSVM
Benign
-0.99
T
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.55
T
PROVEAN
Uncertain
-2.8
D
REVEL
Benign
0.18
Sift
Benign
0.055
T
Sift4G
Benign
0.16
T
Polyphen
0.97
D
Vest4
0.52
MutPred
0.41
Gain of catalytic residue at Q179 (P = 0.0073);
MVP
0.15
MPC
0.47
ClinPred
0.98
D
GERP RS
4.9
Varity_R
0.18
gMVP
0.57

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: rs755132657; hg19: chr12-64195975; API