Standard

Ornithine carbamoyltransferase deficiency

OTC · rs66737144

Strength of the evidence

3 / 4

ClinVar classifies it as disease-causing (or likely), reviewed at 2 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 Pathogenic for Ornithine carbamoyltransferase deficiency, Nonpapillary renal cell carcinoma; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 4 submitters), last evaluated 2025-05-28. ClinVar record 97178 NM_000531.6(OTC):c.386+1G>A

Classification Pathogenic for Nonpapillary renal cell carcinoma; no assertion criteria provided (0 of 4 stars, 2 submitters). ClinVar record 97179 NM_000531.6(OTC):c.386+1G>T

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

A/A Two copies of the version ClinVar lists as disease-causing for Ornithine carbamoyltransferase deficiency. 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 VCV000097178, criteria provided, multiple submitters, no conflicts)
A/G One copy of the version ClinVar lists as disease-causing for Ornithine carbamoyltransferase deficiency. 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. (ClinVar VCV000097178, criteria provided, multiple submitters, no conflicts)
G/G No copy of the version ClinVar lists as disease-causing for Ornithine carbamoyltransferase deficiency. This is the usual result. (ClinVar VCV000097178, criteria provided, multiple submitters, no conflicts)

Source: ClinVar VCV000097178, criteria provided, multiple submitters, no conflicts

Questions about rs66737144

What is rs66737144?

rs66737144 is a single position in the genome, in or near the OTC gene. Published research associates it with ornithine carbamoyltransferase deficiency. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs66737144 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 rs66737144 come from?

ClinVar VCV000097178, criteria provided, multiple submitters, no conflicts. 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

Ornithine carbamoyltransferase deficiency (rs66737144). MyGeneLog™. https://www.mygenelog.com/variants/rs66737144

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