X-136659047-T-C

Position:

• chrX-136659047-T-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Moderate

The ENST00000370629.7(CD40LG):​c.418T>C​(p.Trp140Arg) 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W140C) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 22)
• Consequence: CD40LG ENST00000370629.7 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 5.50

Genes affected

CD40LG (HGNC:11935): (CD40 ligand) The protein encoded by this gene is expressed on the surface of T cells. It regulates B cell function by engaging CD40 on the B cell surface. A defect in this gene results in an inability to undergo immunoglobulin class switch and is associated with hyper-IgM syndrome. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in ENST00000370629.7
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrX-136659049-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 2138729.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.976
• PP5: Variant X-136659047-T-C is Pathogenic according to our data. Variant chrX-136659047-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 976233.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CD40LG	NM_000074.3	c.418T>C	p.Trp140Arg	missense_variant	5/5	ENST00000370629.7	NP_000065.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD40LG	ENST00000370629.7	c.418T>C	p.Trp140Arg	missense_variant	5/5	1	NM_000074.3	ENSP00000359663	P1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 22

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hyper-IgM syndrome type 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Institute of Human Genetics, University of Leipzig Medical Center

Jan 01, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.69	D
BayesDel_noAF	Pathogenic	0.75
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.99	D;D
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.66	T;T
M_CAP	Pathogenic	0.97	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Pathogenic	0.85	D
MutationAssessor	Pathogenic	3.1	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-9.6	D;D
REVEL	Pathogenic	0.94
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.88
MutPred		0.77		Loss of catalytic residue at L138 (P = 0.0028);.;
MVP		1.0
MPC		1.8
ClinPred		1.0	D
GERP RS		5.4
Varity_R		1.0
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: rs104894777; hg19: chrX-135741206;