Is RHBDF2 p.Ser434Pro (c.1300T>C) pathogenic?

RHBDF2 p.Ser434Pro (c.1300T>C) is classified Uncertain significance in RHBDF2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-06-26). AlphaMissense: ambiguous (0.5451); Very rare (popmax 8.47e-05%, nfe); Associated with palmoplantar keratoderma-esophageal carcinoma syndrome.

What condition is associated with RHBDF2 p.Ser434Pro (c.1300T>C)?

RHBDF2 p.Ser434Pro (c.1300T>C) is associated with palmoplantar keratoderma-esophageal carcinoma syndrome (ClinVar).

How common is RHBDF2 p.Ser434Pro (c.1300T>C) in the general population?

RHBDF2 p.Ser434Pro (c.1300T>C) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

What do computational predictors say about RHBDF2 p.Ser434Pro (c.1300T>C)?

AlphaMissense predicts ambiguous (score 0.5451) — an in-silico prediction, not a clinical call.

RHBDF2 p.Ser434Pro

Q: How is Palmoplantar keratoderma-esophageal carcinoma syndrome inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

c.1300T>C · rs2509798014 · VCV2678371

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.5451 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Conditions

palmoplantar keratoderma-esophageal carcinoma syndrome

Computational evidence

Protein change
AlphaMissense	0.5451	ambiguous
REVEL	0.353	indeterminate
SaProt	LLR -6.74	tolerated
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 1.8, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 7,466 bp · p 2.1e-05 · regional, not allelic
Overall
CADD	26.6	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM S463P vs ClinVar S434P) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.47e-05% European (non-Finnish) · 1/1,179,990 alleles

Overall 6.84e-05% 1/1,461,866 alleles · very rare

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: RHBDF2
Protein: p.Ser434Pro
Coding: c.1300T>C
MANE Select: NM_001005498
dbSNP: rs2509798014
Type: single nucleotide variant
Location: chr17:76474732 (GRCh38)
Gene constraint: LOEUF 0.545 · pLI 0.15 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 67.53 · 5 PDB
Residue 463 UniProt numbering: an α-helix

Full RHBDF2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

palmoplantar keratoderma-esophageal carcinoma syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Palmoplantar keratoderma-esophageal carcinoma syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Adult

Similar variants

RHBDF2 p.Ser434Leu Uncertain significance ★★ same residue
RHBDF2 p.Ile157Thr Pathogenic/Likely pathogenic ★★ ⚠ same condition
RHBDF2 c.151-27G>T Uncertain significance ★★ ⚠ same condition
RHBDF2 c.151-86G>A Uncertain significance ★★ ⚠ same condition
RHBDF2 p.Ala397Ser Uncertain significance ★★ ⚠ same condition
RHBDF2 p.Ala725Val Uncertain significance ★★ ⚠ same condition
RHBDF2 p.Arg113His Uncertain significance ★★ ⚠ same condition
RHBDF2 p.Arg235Trp Uncertain significance ★★ ⚠ 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/rhbdf2-p-ser434pro (accessed [today's date]).

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