Is ABCA9 p.Pro536Ser (c.1606C>T) pathogenic?

ABCA9 p.Pro536Ser (c.1606C>T) is classified Uncertain significance in ABCA9 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-12). AlphaMissense: likely benign (0.2198); Very rare (popmax 0.00172%, amr).

How common is ABCA9 p.Pro536Ser (c.1606C>T) in the general population?

ABCA9 p.Pro536Ser (c.1606C>T) is very rare (popmax 0.00172%, amr) (gnomAD).

What do computational predictors say about ABCA9 p.Pro536Ser (c.1606C>T)?

AlphaMissense predicts likely benign (score 0.2198) — an in-silico prediction, not a clinical call.

ABCA9 p.Pro536Ser

c.1606C>T · rs776664778 · VCV2254575

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2198 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00172%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.2198	likely benign
REVEL	0.284	benign-leaning
SaProt	LLR -9.86	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.8	GERP 0.28, phastCons 1
Regional constraint	o/e 0.94	unconstrained · MANE · 75 kb · p 0.014 · regional, not allelic
Overall
CADD	21.2	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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 0.00172% Admixed American · 1/58,234 alleles

Filtering AF 0.000185% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000121%

Overall 0.000564% 9/1,596,208 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00172%	58,234
Remaining individualsnot grpmax-eligible	0.00162%	61,616
African / African-American	0.00135%	74,262
European (non-Finnish)	0.000513%	194,810

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: ABCA9
Protein: p.Pro536Ser
Coding: c.1606C>T
MANE Select: NM_080283
dbSNP: rs776664778
Type: single nucleotide variant
Location: chr17:69028544 (GRCh38)
Gene constraint: LOEUF 1.006 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.22
Residue 536: the abc transporter 1 domain

Full ABCA9 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCA9 p.Tyr1123= Likely benign ★★ same type
ABCA9 p.Ala1071Val Uncertain significance ★ ⚠ same type
ABCA9 p.Ala1153Thr Uncertain significance ★ ⚠ same type
ABCA9 p.Ala1196Thr Uncertain significance ★ ⚠ same type
ABCA9 p.Ala125Thr Uncertain significance ★ ⚠ same type
ABCA9 p.Ala1285Thr Uncertain significance ★ ⚠ same type
ABCA9 p.Ala1407Val Uncertain significance ★ ⚠ same type
ABCA9 p.Ala1492Pro 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/abca9-p-pro536ser (accessed [today's date]).

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