Is ABCD1 p.Pro546Ser (c.1636C>T) pathogenic?

ABCD1 p.Pro546Ser (c.1636C>T) is classified Uncertain significance in ABCD1 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-01-06). AlphaMissense: likely pathogenic (0.9054); Very rare (popmax 0.000112%, nfe).

How common is ABCD1 p.Pro546Ser (c.1636C>T) in the general population?

ABCD1 p.Pro546Ser (c.1636C>T) is very rare (popmax 0.000112%, nfe) (gnomAD).

What do computational predictors say about ABCD1 p.Pro546Ser (c.1636C>T)?

AlphaMissense predicts likely pathogenic (score 0.9054) — an in-silico prediction, not a clinical call.

ABCD1 p.Pro546Ser

c.1636C>T · rs2148397874 · VCV1698097

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9054 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000112%, nfe)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9054	likely pathogenic
REVEL	0.928	moderately pathogenic-leaning
SaProt	LLR -11.08	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	Δ0.20	acceptor loss · deltas
Constraint at this position
Conservation	phyloP 7.6	GERP 1.9, phastCons 1
Regional constraint	o/e 0.38	unconstrained · MANE · 3,261 bp · p 4e-11 · regional, not allelic
Overall
CADD	27.3	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000112% European (non-Finnish) · 1/895,420 alleles

Overall 9.12e-05% 1/1,096,394 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: ABCD1
Protein: p.Pro546Ser
Coding: c.1636C>T
MANE Select: NM_000033
dbSNP: rs2148397874
Type: single nucleotide variant
Location: chrX:153740575 (GRCh38)
Structure: AlphaFold pLDDT 81.58 · 14 PDB
Residue 546: an α-helix; the abc transporter domain

Full ABCD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCD1 p.Pro546Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
ABCD1 c.1635-2A>G Pathogenic ★★ same type
ABCD1 c.1781-1G>C Pathogenic ★★ same type
ABCD1 c.1781-1G>T Pathogenic/Likely pathogenic ★★ same type
ABCD1 c.1866-10G>A Pathogenic/Likely pathogenic ★★ same type
ABCD1 c.1866-1G>C Likely pathogenic ★★ same type
ABCD1 c.1866-2A>T Likely pathogenic ★★ same type
ABCD1 c.901-1G>A Pathogenic ★★ 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/abcd1-p-pro546ser (accessed [today's date]).

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