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Hypomyelination and Congenital Cataract

HYCC1 · rs778280191

Where this position leads

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 Conflicting classifications of pathogenicity for Hypomyelination and Congenital Cataract, Inborn genetic diseases; criteria provided, conflicting classifications (1 of 4 stars, 5 submitters), last evaluated 2022-06-08. ClinVar record 359779 NM_032581.4(HYCC1):c.626+5A>G

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 labs disagree about for Hypomyelination and Congenital Cataract: 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 VCV000359779, criteria provided, conflicting classifications)

C/T One copy of the version labs disagree about for Hypomyelination and Congenital Cataract: 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 VCV000359779, criteria provided, conflicting classifications)

T/T No copy of the version labs disagree about for Hypomyelination and Congenital Cataract: in ClinVar, some labs call it disease-causing and others do not. This is the usual result. (ClinVar VCV000359779, criteria provided, conflicting classifications)

Source: ClinVar VCV000359779, criteria provided, conflicting classifications

Questions about rs778280191

What is rs778280191?

rs778280191 is a single position in the genome, in or near the HYCC1 gene. Published research associates it with hypomyelination and congenital cataract. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

What conditions is rs778280191 linked to?

On MyGeneLog this position is linked to Cataract. The research behind each link, and its sources, are set out on that condition page.

Does having rs778280191 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 rs778280191 come from?

ClinVar VCV000359779, criteria provided, conflicting classifications. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

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

Hypomyelination and Congenital Cataract (rs778280191). MyGeneLog™. https://www.mygenelog.com/variants/rs778280191

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