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HADH p.Phe217=

c.651T>C · rs756177386 · VCV2195201

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0495%, sas)
Conditions
1
3-hydroxyacyl-CoA dehydrogenase 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
ConservationphyloP -0.43GERP -5.1, phastCons 0.012
Overall
CADD2.902PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0495% South Asian · 45/90,964 alleles
Filtering AF 0.0379% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0339%
Overall 0.0028% 45/1,607,796 alleles · ultra-rare exomes 44/1,455,618 · genomes 1/152,178 · joint denominator

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
HADH
Protein
p.Phe217=
Coding
c.651T>C
MANE Select
NM_005327
dbSNP
rs756177386
Type
single nucleotide variant
Location
chr4:108027702 (GRCh38)
Gene constraint
LOEUF 1.09 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 96.90 · 12 PDB
Residue 217
a turn
Full HADH gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/hadh-p-phe217 (accessed [today's date]).

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