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Brain small vessel disease 1 with or without ocular anomalies

COL4A1 · rs672601348

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

There is no record yet to score this position by (a ClinVar disease classification or a genome-wide significant study). That is not the same as weak evidence.

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 benign for COL4A1-related disorder; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 3 submitters), last evaluated 2026-07-01. ClinVar record 1342725 NM_001845.6(COL4A1):c.4881C>T (p.Asn1627=)

Classification Pathogenic for Brain small vessel disease 1 with or without ocular anomalies; no assertion criteria provided (0 of 4 stars, 1 submitter), last evaluated 2013-05-01. ClinVar record 161976 NM_001845.6(COL4A1):c.4881C>G (p.Asn1627Lys)

Change history MyGeneLog™ keeps a copy of every weekly release from 2026-10-19 and compares them. This position's classification has not changed since.

What this is ClinVar's aggregate record for this position (as of its 2026-10-19 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 Two copies of the version ClinVar lists as disease-causing for Brain small vessel disease 1 with or without ocular anomalies. 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. This call was sent to ClinVar without the lab's criteria, the least certain kind of record, so it may change. (ClinVar VCV000161976, no assertion criteria provided)
C/G One copy of the version ClinVar lists as disease-causing for Brain small vessel disease 1 with or without ocular anomalies. Some conditions need only one copy; for others, one copy makes a person a carrier who is usually healthy but can pass it on. A genetic counsellor can say which applies. This call was sent to ClinVar without the lab's criteria, the least certain kind of record, so it may change. (ClinVar VCV000161976, no assertion criteria provided)
G/G No copy of the version ClinVar lists as disease-causing for Brain small vessel disease 1 with or without ocular anomalies. This is the usual result. This call was sent to ClinVar without the lab's criteria, the least certain kind of record, so it may change. (ClinVar VCV000161976, no assertion criteria provided)

Source: ClinVar VCV000161976, no assertion criteria provided

Questions about rs672601348

What is rs672601348?

rs672601348 is a single position in the genome, in or near the COL4A1 gene. Published research associates it with brain small vessel disease 1 with or without ocular anomalies. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs672601348 mean I will get this?

No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.

Where does the information about rs672601348 come from?

ClinVar VCV000161976, no assertion criteria provided. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.

Brain small vessel disease 1 with or without ocular anomalies (rs672601348). MyGeneLog™. https://www.mygenelog.com/variants/rs672601348

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