Is TTN p.Val22641= (c.67923T>C) pathogenic?

TTN p.Val22641= (c.67923T>C) is classified Likely benign in TTN (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-12-23). Very rare (popmax 0.00439%, sas); Associated with Cardiovascular phenotype.

What condition is associated with TTN p.Val22641= (c.67923T>C)?

TTN p.Val22641= (c.67923T>C) is associated with Cardiovascular phenotype, cardiomyopathy, dilated cardiomyopathy 1G (ClinVar).

How common is TTN p.Val22641= (c.67923T>C) in the general population?

TTN p.Val22641= (c.67923T>C) is very rare (popmax 0.00439%, sas) (gnomAD).

TTN p.Val22641=

c.67923T>C · rs759628511 · VCV743914

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00439%, sas)

Conditions

Cardiovascular phenotype

⚠ Built without this gene's context — gene constraint and dosage, protein structure, pathways, panels and related-variant links were not looked up for this page. why

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 0.37	GERP -0.6, phastCons 0.54
Overall
CADD	14.69	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00439% South Asian · 4/91,076 alleles

Filtering AF 0.00165% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00142%

Overall 0.00217% 35/1,613,290 alleles · very rare exomes 32/1,461,214 · genomes 3/152,076 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00439%	22,769
Remaining individualsnot grpmax-eligible	0.0032%	31,219
European (non-Finnish)	0.00237%	42,128
East Asian	0.00223%	44,750

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: TTN
Protein: p.Val22641=
Coding: c.67923T>C
MANE Select: NM_001267550
dbSNP: rs759628511
Type: single nucleotide variant
Location: chr2:178579107 (GRCh38)

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

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: cardiomyopathy dilated cardiomyopathy 1G autosomal recessive limb-girdle muscular dystrophy type 2J

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/ttn-p-val22641 (accessed [today's date]).

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