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CD40LG p.Glu56Ter

c.166G>T · rs2148551084 · VCV1327990

Pathogenic Multiple submitters
Classification
Pathogenic
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Absent
absent from gnomAD v4.1
Conditions
2
CD40LG-related disorder

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequencenonsense (stop-gain)predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMDpredictedpremature termination codon in exon 2 of 5
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP 12GERP 1.9, phastCons 1
Overall
CADD37.0PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene
CD40LG
Protein
p.Glu56Ter
Coding
c.166G>T
MANE Select
NM_000074
dbSNP
rs2148551084
Type
single nucleotide variant
Location
chrX:136650275 (GRCh38)
Structure
AlphaFold pLDDT 82.34 · 8 PDB
Full CD40LG gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

CD40LG-related disorder

Also linked: hyper-IgM syndrome type 1

Similar variants

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/cd40lg-p-glu56ter (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown