Is SP110 p.Pro140= (c.420C>T) pathogenic?

SP110 p.Pro140= (c.420C>T) is classified Likely benign in SP110 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-09-01). Absent from gnomAD v4.1; Associated with hepatic veno-occlusive disease-immunodeficiency syndrome.

What condition is associated with SP110 p.Pro140= (c.420C>T)?

SP110 p.Pro140= (c.420C>T) is associated with hepatic veno-occlusive disease-immunodeficiency syndrome (ClinVar).

How common is SP110 p.Pro140= (c.420C>T) in the general population?

SP110 p.Pro140= (c.420C>T) is absent from gnomAD v4.1 (gnomAD).

SP110 p.Pro140=

Q: How is Hepatic veno-occlusive disease-immunodeficiency syndrome inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

c.420C>T · rs987896301 · VCV2088926

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

hepatic veno-occlusive disease-immunodeficiency syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.6	GERP -2.8
Overall
CADD	0.264	PHRED · no single calibrated threshold — expert panels disagree

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: SP110
Protein: p.Pro140=
Coding: c.420C>T
MANE Select: NM_080424
dbSNP: rs987896301
Type: single nucleotide variant
Location: chr2:230212924 (GRCh38)
Gene constraint: LOEUF 0.826 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 58.63
Residue 140: the 'disordered' region

Full SP110 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hepatic veno-occlusive disease-immunodeficiency syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Hepatic veno-occlusive disease-immunodeficiency syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy

Similar variants

SP110 p.Pro140Ser Uncertain significance ★ ⚠ same residue
SP110 c.1888-2A>G Likely pathogenic ★★ same condition
SP110 p.Arg344Ter Pathogenic/Likely pathogenic ★★ same condition
SP110 p.Arg421Ter Pathogenic/Likely pathogenic ★★ same condition
SP110 p.Arg448Ter Pathogenic/Likely pathogenic ★★ same condition
SP110 p.Arg554Ter Pathogenic/Likely pathogenic ★★ same condition
SP110 p.Arg631Ter Pathogenic/Likely pathogenic ★★ same condition
SP110 c.1591-6T>G Uncertain significance ★★ same condition

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/sp110-p-pro140 (accessed [today's date]).

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