Is STEAP3 p.Pro148= (c.444C>A) pathogenic?

STEAP3 p.Pro148= (c.444C>A) is classified Likely benign in STEAP3 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-15). Absent from gnomAD v4.1.

How common is STEAP3 p.Pro148= (c.444C>A) in the general population?

STEAP3 p.Pro148= (c.444C>A) is absent from gnomAD v4.1 (gnomAD).

STEAP3 p.Pro148=

c.444C>A · VCV4780095

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>G here scores Δ0.26 · evaluated, not missing
Constraint at this position
Conservation	phyloP -1.7	GERP -3.9
Overall
CADD	12.18	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: STEAP3
Protein: p.Pro148=
Coding: c.444C>A
MANE Select: NM_182915
Type: single nucleotide variant
Location: chr2:119245910 (GRCh38)
Gene constraint: LOEUF 1.27 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 89.24 · 2 PDB

Full STEAP3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

STEAP3 p.Ala490Thr Uncertain significance ★★ ⚠ same type
STEAP3 p.Arg217Ser Uncertain significance ★★ ⚠ same type
STEAP3 p.Arg293Trp Uncertain significance ★★ ⚠ same type
STEAP3 p.Arg336His Uncertain significance ★★ ⚠ same type
STEAP3 p.Arg466Cys Uncertain significance ★★ ⚠ same type
STEAP3 p.Gln87Arg Uncertain significance ★★ ⚠ same type
STEAP3 p.Glu141Lys Uncertain significance ★★ ⚠ same type
STEAP3 p.Gly379Cys Uncertain significance ★★ ⚠ 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/steap3-p-pro148 (accessed [today's date]).

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