Sensitive

Alexander disease

GFAP · rs267607526

Stands on its own. Nothing else here links to this position yet — but the page above is the point: what the research found, what each genotype means, and where it came from, in language you can read. Links to conditions, drugs and the senses appear automatically if we write them.

Strength of the evidence

4 / 4

ClinVar classifies it as disease-causing (or likely), reviewed at 3 of 4 stars.

How this is scored

4: ClinVar disease-causing, reviewed by an expert panel or a guideline (3–4 stars). 3: ClinVar, several labs agreeing (2 stars), or a genetic study at p ≤ 10⁻⁵⁰. 2: ClinVar from one lab (1 star), or p ≤ 10⁻²⁰. 1: ClinVar submitted without criteria (0 stars), or genome-wide significance (p ≤ 5×10⁻⁸). The higher of the two counts. It says how solid the evidence is, not whether it matters for a particular person.

What ClinVar records

Classification Likely pathogenic for Alexander disease; reviewed by expert panel (3 of 4 stars, 3 submitters), last evaluated 2026-10-23. ClinVar record 66436 NM_002055.5(GFAP):c.1111G>C (p.Glu371Gln)

Classification Pathogenic for Alexander disease; reviewed by expert panel (3 of 4 stars, 3 submitters), last evaluated 2026-10-23. ClinVar record 1199219 NM_002055.5(GFAP):c.1111G>A (p.Glu371Lys)

Change history 2026-11-01: Conflicting classifications of pathogenicity → Likely pathogenic.

What this is ClinVar's aggregate record for this position (as of its 2026-11-01 release), not a result about you. A classification describes the variant against the condition named, as laboratories submitted it. Whether a person carries this variant, and what that would mean for them, is a question for a clinical test and a genetic counsellor.

What each result means

C/C No copy of the version labs disagree about for Alexander disease: in ClinVar, some labs call it disease-causing and others do not. This is the usual result. (ClinVar VCV001199219, criteria provided, conflicting classifications)

C/T One copy of the version labs disagree about for Alexander disease: in ClinVar, some labs call it disease-causing and others do not, so what one copy means is not settled. A genetic counsellor can look at the separate records. (ClinVar VCV001199219, criteria provided, conflicting classifications)

T/T Two copies of the version labs disagree about for Alexander disease: in ClinVar, some labs call it disease-causing and others do not. A result like this should be confirmed by a medical genetic test and talked through with a doctor; consumer DNA files can misread rare variants. (ClinVar VCV001199219, criteria provided, conflicting classifications)

Source: ClinVar VCV001199219, criteria provided, conflicting classifications

Quoting this page

Licensed CC BY-NC 4.0: free to read, share and adapt for non-commercial use, naming MyGeneLog™ and linking the exact page. Commercial use, including training or serving a commercial AI system, needs a licence — https://www.mygenelog.com/license

Alexander disease (rs267607526). MyGeneLog™. https://www.mygenelog.com/variants/rs267607526

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