Is SDHA p.Val151Phe (c.451G>T) pathogenic?

SDHA p.Val151Phe (c.451G>T) is classified Uncertain significance in SDHA (ClinVar, Single submitter, 1 submitter; last evaluated 2026-03-31). AlphaMissense: likely benign (0.1376); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with SDHA p.Val151Phe (c.451G>T)?

SDHA p.Val151Phe (c.451G>T) is associated with hereditary neoplastic syndrome (ClinVar).

How common is SDHA p.Val151Phe (c.451G>T) in the general population?

SDHA p.Val151Phe (c.451G>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SDHA p.Val151Phe (c.451G>T)?

AlphaMissense predicts likely benign (score 0.1376) — an in-silico prediction, not a clinical call.

SDHA p.Val151Phe

c.451G>T · VCV4864217

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1376 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.1376	likely benign
REVEL	0.255	benign-leaning
SaProt	LLR -10.12	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.8	GERP -2.2, phastCons 1
Regional constraint	o/e 0.76	unconstrained · MANE · 38 kb · p 1.1e-12 · regional, not allelic
Overall
CADD	19.19	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

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: SDHA
Protein: p.Val151Phe
Coding: c.451G>T
MANE Select: NM_004168
Type: single nucleotide variant
Location: chr5:225557 (GRCh38)
Gene constraint: LOEUF 0.786 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.06 · 5 PDB
Residue 151: an α-helix

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

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

SDHA p.Val151= Benign/Likely benign ★★ same residue
SDHA p.Val151Ile Conflicting classifications of pathogenicity ★ ⚠ same residue
SDHA c.1064+1G>T Likely pathogenic ★★ same condition
SDHA c.1064+2T>A Likely pathogenic ★★ same condition
SDHA c.1261-1G>A Likely pathogenic ★★ same condition
SDHA c.1261-2A>G Likely pathogenic ★★ same condition
SDHA c.151-1G>C Likely pathogenic ★★ same condition
SDHA c.151-2A>G 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/sdha-p-val151phe (accessed [today's date]).

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