CHRM3 p.Thr64=
c.192C>T · rs141951495 · VCV725518
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
rare (popmax 0.125%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -0.24 | GERP -1.9 |
| Overall | ||
| CADD | 7.464 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.125%
African / African-American · 94/75,020 alleles
Filtering AF
0.105%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0971%
Overall
0.00657%
106/1,614,148 alleles · rare
exomes 56/1,461,890 · genomes 50/152,258 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.125% | 798 |
| Remaining individualsnot grpmax-eligible | 0.0112% | 8,930 |
| East Asian | 0.00446% | 22,437 |
| Admixed American | 0.00167% | 60,028 |
| South Asian | 0.0011% | 91,080 |
| European (non-Finnish) | 8.47e-05% | 1,180,036 |
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
- CHRM3
- Protein
- p.Thr64=
- Coding
- c.192C>T
- MANE Select
- NM_001375978
- dbSNP
- rs141951495
- Type
- single nucleotide variant
- Location
- chr1:239907643 (GRCh38)
- Gene constraint
- LOEUF 0.42 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 67.30 · 5 PDB
Similar variants
- CHRM3 p.Ala585Thr Uncertain significance ★★ ⚠ same type
- CHRM3 p.Ala589Asp Uncertain significance ★★ ⚠ same type
- CHRM3 p.Arg310His Uncertain significance ★★ ⚠ same type
- CHRM3 p.Arg44Gln Uncertain significance ★★ ⚠ same type
- CHRM3 p.Arg569Cys Uncertain significance ★★ ⚠ same type
- CHRM3 p.Arg584His Uncertain significance ★★ ⚠ same type
- CHRM3 p.Asn339Lys Uncertain significance ★★ ⚠ same type
- CHRM3 p.Asn444Thr Uncertain significance ★★ ⚠ same type
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/chrm3-p-thr64 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown