Is AK2 p.Arg202Thr (c.605G>C) pathogenic?

AK2 p.Arg202Thr (c.605G>C) is classified Uncertain significance in AK2 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-04-02). AlphaMissense: likely benign (0.1494); Absent from gnomAD v4.1; Associated with reticular dysgenesis.

What condition is associated with AK2 p.Arg202Thr (c.605G>C)?

AK2 p.Arg202Thr (c.605G>C) is associated with reticular dysgenesis (ClinVar).

How common is AK2 p.Arg202Thr (c.605G>C) in the general population?

AK2 p.Arg202Thr (c.605G>C) is absent from gnomAD v4.1 (gnomAD).

How is Reticular dysgenesis inherited?

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

What do computational predictors say about AK2 p.Arg202Thr (c.605G>C)?

AlphaMissense predicts likely benign (score 0.1494) — an in-silico prediction, not a clinical call.

AK2 p.Arg202Thr

c.605G>C · rs2124279468 · VCV1519453

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1494 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

reticular dysgenesis

Computational evidence

Protein change
AlphaMissense	0.1494	likely benign
REVEL	0.15	moderately benign-leaning
SaProt	LLR -7.73	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.1	GERP -0.31, phastCons 0.87
Regional constraint	o/e 0.85	unconstrained · MANE · 24 kb · p 0.0069 · regional, not allelic
Overall
CADD	14.52	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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: AK2
Protein: p.Arg202Thr
Coding: c.605G>C
MANE Select: NM_001625
dbSNP: rs2124279468
Type: single nucleotide variant
Location: chr1:33013296 (GRCh38)
Gene constraint: LOEUF 0.954 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 90.49 · 3 PDB
Residue 202: an α-helix

Full AK2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

reticular dysgenesis — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Reticular dysgenesis (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal
Prevalence: <1 / 1 000 000 (Europe)

Similar variants

AK2 c.330+5G>A Pathogenic ★★ same condition
AK2 c.498+1G>A Pathogenic/Likely pathogenic ★★ same condition
AK2 p.Ala182Asp Pathogenic/Likely pathogenic ★★ same condition
AK2 p.Arg103Trp Pathogenic/Likely pathogenic ★★ same condition
AK2 p.Arg175Pro Likely pathogenic ★★ same condition
AK2 p.Met1Val Pathogenic ★★ same condition
AK2 p.Ala212Thr Uncertain significance ★★ ⚠ same condition
AK2 p.Ala2Val 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/ak2-p-arg202thr (accessed [today's date]).

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