Is TONSL p.Glu149Gln (c.445G>C) pathogenic?

TONSL p.Glu149Gln (c.445G>C) is classified Likely benign in TONSL (ClinVar, Single submitter, 1 submitter; last evaluated 2024-12-25). AlphaMissense: likely benign (0.0795); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with TONSL p.Glu149Gln (c.445G>C)?

TONSL p.Glu149Gln (c.445G>C) is associated with Inborn genetic diseases (ClinVar).

How common is TONSL p.Glu149Gln (c.445G>C) in the general population?

TONSL p.Glu149Gln (c.445G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about TONSL p.Glu149Gln (c.445G>C)?

AlphaMissense predicts likely benign (score 0.0795) — an in-silico prediction, not a clinical call.

TONSL p.Glu149Gln

c.445G>C · VCV3809508

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0795 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0795	likely benign
REVEL	0.038	moderately benign-leaning
SaProt	LLR -4.83	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 6.2	GERP 0.14, phastCons 1
Regional constraint	o/e 1.01	unconstrained · MANE · 15 kb · p 0.67 · regional, not allelic
Overall
CADD	18.14	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

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: TONSL
Protein: p.Glu149Gln
Coding: c.445G>C
MANE Select: NM_013432
Type: single nucleotide variant
Location: chr8:144443141 (GRCh38)
Gene constraint: LOEUF 1.024 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 76.06 · 3 PDB
Residue 149: a UniProt-annotated variant site (in semdsp; disease phenotype includes immunologic and hematologic abnormalities)

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

TONSL p.Glu149Gly Uncertain significance ★ ⚠ same residue
TONSL p.Glu149= Likely benign ★ same residue
TONSL p.Ala1053Ser Uncertain significance ★★ ⚠ same condition
TONSL p.Ala1065Ser Uncertain significance ★★ ⚠ same condition
TONSL p.Ala1093Ser Uncertain significance ★★ ⚠ same condition
TONSL p.Ala1200Thr Uncertain significance ★★ ⚠ same condition
TONSL p.Ala215Thr Uncertain significance ★★ ⚠ same condition
TONSL p.Ala232Val 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/tonsl-p-glu149gln (accessed [today's date]).

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