PER2 p.His631=
c.1893C>T · VCV4960757
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
rare (popmax 0.148%, mid)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -4.9 | GERP -2.6 |
| Overall | ||
| CADD | 0.566 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.148%
Middle Eastern · 9/6,084 alleles
Filtering AF
0.0772%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0576%
Overall
0.00254%
41/1,614,054 alleles · rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.148% | 676 |
| African / African-American | 0.0133% | 7,494 |
| South Asian | 0.00768% | 13,013 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,240 |
| Admixed American | 0.00167% | 59,998 |
| European (non-Finnish) | 0.00102% | 98,334 |
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
- PER2
- Protein
- p.His631=
- Coding
- c.1893C>T
- MANE Select
- NM_022817
- Type
- single nucleotide variant
- Location
- chr2:238258283 (GRCh38)
- Gene constraint
- LOEUF 0.67 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 53.96 · 4 PDB
- Residue 631
- the 'csnk1e binding domain' region; the 'disordered' region
Similar variants
- PER2 p.Arg401His Uncertain significance ★★ ⚠ same type
- PER2 p.Glu184Ala Uncertain significance ★★ ⚠ same type
- PER2 p.Ala655= Benign ★★ same type
- PER2 p.Arg401Cys Benign ★★ same type
- PER2 p.Arg820= Likely benign ★★ same type
- PER2 p.Cys1084Arg Likely benign ★★ same type
- PER2 p.His476Asn Likely benign ★★ same type
- PER2 p.Phe393= Benign ★★ 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/per2-p-his631 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown