X-120626590-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_001011551.3(C1GALT1C1):c.577T>C(p.Ser193Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 24)
• Consequence: C1GALT1C1 NM_001011551.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 6.24

Genes affected

C1GALT1C1 (HGNC:24338): (C1GALT1 specific chaperone 1) This gene encodes a type II transmembrane protein that is similar to the core 1 beta1,3-galactosyltransferase 1, which catalyzes the synthesis of the core-1 structure, also known as Thomsen-Friedenreich antigen, on O-linked glycans. This gene product lacks the galactosyltransferase activity itself, but instead acts as a molecular chaperone required for the folding, stability and full activity of the core 1 beta1,3-galactosyltransferase 1. Mutations in this gene have been associated with Tn syndrome. Alternatively spliced transcript variants encoding the same protein have been identified. [provided by RefSeq, Dec 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.846
• PP5: Variant X-120626590-A-G is Pathogenic according to our data. Variant chrX-120626590-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 39573.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chrX-120626590-A-G is described in UniProt as null. Variant chrX-120626590-A-G is described in UniProt as null.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
C1GALT1C1	NM_001011551.3	c.577T>C	p.Ser193Pro	missense_variant	2/2	ENST00000304661.6
C1GALT1C1	NM_152692.5	c.577T>C	p.Ser193Pro	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
C1GALT1C1	ENST00000304661.6	c.577T>C	p.Ser193Pro	missense_variant	2/2	1	NM_001011551.3	P1
C1GALT1C1	ENST00000371313.2	c.577T>C	p.Ser193Pro	missense_variant	3/3	1		P1

Frequencies

GnomAD3 genomes Cov.: 24

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 24

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Polyagglutinable erythrocyte syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Aug 01, 2008

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.030
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.67	D;D
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.85	D;D
MetaSVM	Benign	-0.62	T
MutationAssessor	Uncertain	2.8	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-3.1	D;D
REVEL	Uncertain	0.34
Sift	Uncertain	0.020	D;D
Sift4G	Uncertain	0.023	D;D
Polyphen		1.0	D;D
Vest4		0.67
MutPred		0.62		Loss of phosphorylation at S193 (P = 0.062);Loss of phosphorylation at S193 (P = 0.062);
MVP		0.70
MPC		1.0
ClinPred		0.98	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.87
gMVP		0.97

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

Other links and lift over

dbSNP: rs397514537; hg19: chrX-119760445;