Is ROM1 p.Ala18= (c.54A>C) pathogenic?

ROM1 p.Ala18= (c.54A>C) is classified Likely benign in ROM1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-15). Very rare (popmax 8.48e-05%, nfe).

How common is ROM1 p.Ala18= (c.54A>C) in the general population?

ROM1 p.Ala18= (c.54A>C) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

ROM1 p.Ala18=

c.54A>C · VCV4764526

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

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 -1.6	GERP -2.6
Overall
CADD	1.133	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.48e-05% European (non-Finnish) · 1/1,179,826 alleles

Overall 6.2e-05% 1/1,613,258 alleles · very rare exomes 1/1,460,930 · genomes 0/152,328 · 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: ROM1
Protein: p.Ala18=
Coding: c.54A>C
MANE Select: NM_000327
Type: single nucleotide variant
Location: chr11:62613335 (GRCh38)
Gene constraint: LOEUF 1.003 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 86.56 · 1 PDB

Full ROM1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ROM1 p.Ala18Ser Uncertain significance ★ ⚠ same residue
ROM1 p.Ala132Val Uncertain significance ★★ ⚠ same type
ROM1 p.Ala140Thr Uncertain significance ★★ ⚠ same type
ROM1 p.Ala265Thr Uncertain significance ★★ ⚠ same type
ROM1 p.Ala329Val Uncertain significance ★★ ⚠ same type
ROM1 p.Ala54Thr Uncertain significance ★★ ⚠ same type
ROM1 p.Ala69Gly Uncertain significance ★★ ⚠ same type
ROM1 p.Ala71Thr 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/rom1-p-ala18 (accessed [today's date]).

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