Is TLK2 p.Arg61Ter (c.181C>T) pathogenic?

TLK2 p.Arg61Ter (c.181C>T) is classified Pathogenic in TLK2 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-02-25). Absent from gnomAD v4.1; Associated with intellectual disability, autosomal dominant 57.

What condition is associated with TLK2 p.Arg61Ter (c.181C>T)?

TLK2 p.Arg61Ter (c.181C>T) is associated with intellectual disability, autosomal dominant 57 (ClinVar).

How common is TLK2 p.Arg61Ter (c.181C>T) in the general population?

TLK2 p.Arg61Ter (c.181C>T) is absent from gnomAD v4.1 (gnomAD).

TLK2 p.Arg61Ter

c.181C>T · rs1567844041 · VCV617928

Pathogenic Multiple submitters

Classification

Pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

intellectual disability, autosomal dominant 57

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	nonsense (stop-gain)	predicted loss-of-function in a LoF-intolerant gene
NMD	predicted	premature termination codon in exon 4 of 22
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.9	GERP 2.2, phastCons 1
Overall
CADD	37.0	PHRED · 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: TLK2
Protein: p.Arg61Ter
Coding: c.181C>T
MANE Select: NM_006852
dbSNP: rs1567844041
Type: single nucleotide variant
Location: chr17:62522231 (GRCh38)
Gene constraint: LOEUF 0.103 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 73.15 · 2 PDB
Residue 61: the 'disordered' region; a UniProt-annotated variant site (in mrd57)

Full TLK2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

intellectual disability, autosomal dominant 57 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

TLK2 c.1121+1G>A Pathogenic/Likely pathogenic ★★ same condition
TLK2 c.1550+1G>A Pathogenic/Likely pathogenic ★★ same condition
TLK2 p.Arg11Ter Likely pathogenic ★★ same condition
TLK2 p.Arg122Ter Pathogenic/Likely pathogenic ★★ same condition
TLK2 p.Arg123Ter Pathogenic ★★ same condition
TLK2 p.Arg262Ter Pathogenic ★★ same condition
TLK2 p.Arg546Trp Pathogenic/Likely pathogenic ★★ same condition
TLK2 p.Arg703Ter Pathogenic/Likely pathogenic ★★ 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/tlk2-p-arg61ter (accessed [today's date]).

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