PHGDH p.Cys234=
c.702T>C · VCV4059772
Uncertain significance
No assertion criteria
Classification
Uncertain significance
ClinVar
Review
No assertion criteria ☆☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Absent
absent from gnomAD v4.1
Conditions
1
PHGDH deficiency
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 -3.1 | GERP -2.5 |
| Overall | ||
| CADD | 3.232 | PHRED · no single calibrated threshold — expert panels disagree |
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
- PHGDH
- Protein
- p.Cys234=
- Coding
- c.702T>C
- MANE Select
- NM_006623
- Type
- single nucleotide variant
- Location
- chr1:119735353 (GRCh38)
- Gene constraint
- LOEUF 1.155 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 93.06 · 21 PDB
- Residue 234
- a binding site
Similar variants
- PHGDH p.Cys234Phe Uncertain significance ★ ⚠ same residue
- PHGDH c.1078+1G>A Likely pathogenic ★★ same condition
- PHGDH c.138+1G>T Likely pathogenic ★★ same condition
- PHGDH c.139-2A>G Likely pathogenic ★★ same condition
- PHGDH c.290+2T>C Pathogenic/Likely pathogenic ★★ same condition
- PHGDH c.357-1G>A Pathogenic/Likely pathogenic ★★ same condition
- PHGDH c.412-1G>C Likely pathogenic ★★ same condition
- PHGDH c.643+1G>A 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/phgdh-p-cys234 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown