Is ITK p.Leu351Arg (c.1052T>G) pathogenic?

ITK p.Leu351Arg (c.1052T>G) is classified Uncertain significance in ITK (ClinVar, Single submitter, 1 submitter; last evaluated 2022-10-17). AlphaMissense: ambiguous (0.3458); Absent from gnomAD v4.1; Associated with lymphoproliferative syndrome 1.

What condition is associated with ITK p.Leu351Arg (c.1052T>G)?

ITK p.Leu351Arg (c.1052T>G) is associated with lymphoproliferative syndrome 1 (ClinVar).

How common is ITK p.Leu351Arg (c.1052T>G) in the general population?

ITK p.Leu351Arg (c.1052T>G) is absent from gnomAD v4.1 (gnomAD).

How is Combined immunodeficiency due to ITK deficiency inherited?

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

What do computational predictors say about ITK p.Leu351Arg (c.1052T>G)?

AlphaMissense predicts ambiguous (score 0.3458) — an in-silico prediction, not a clinical call.

ITK p.Leu351Arg

c.1052T>G · rs1036041538 · VCV2008430

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3458 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

lymphoproliferative syndrome 1

Computational evidence

Protein change
AlphaMissense	0.3458	ambiguous
REVEL	0.609	indeterminate
SaProt	LLR -8.47	tolerated
Splicing
SpliceAI	Δ0.21	donor gain, 8 bp away · masked 0 · deltas
Constraint at this position
Conservation	phyloP 7.9	GERP 1.8, phastCons 1
Regional constraint	o/e 0.80	unconstrained · MANE · 63 kb · p 2.1e-06 · regional, not allelic
Overall
CADD	23.7	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: ITK
Protein: p.Leu351Arg
Coding: c.1052T>G
MANE Select: NM_005546
dbSNP: rs1036041538
Type: single nucleotide variant
Location: chr5:157241712 (GRCh38)
Gene constraint: LOEUF 0.644 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 84.82 · 37 PDB

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

Disease context

lymphoproliferative syndrome 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Combined immunodeficiency due to ITK deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Childhood

Similar variants

ITK p.Leu351= Likely benign ★★ same residue
ITK c.851+5G>A Uncertain significance ★★ same condition
ITK p.Ala191Thr Uncertain significance ★★ ⚠ same condition
ITK p.Ala261Thr Uncertain significance ★★ ⚠ same condition
ITK p.Ala308Ser Uncertain significance ★★ ⚠ same condition
ITK p.Ala345Val Uncertain significance ★★ ⚠ same condition
ITK p.Ala471Thr Uncertain significance ★★ ⚠ same condition
ITK p.Ala525Thr 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/itk-p-leu351arg (accessed [today's date]).

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