Aliases: CGI-10.
COQ6 (coenzyme Q6, monooxygenase) is named by 2 disorder entries.
ai-gene-review gives COQ6's core molecular functions as 2-methoxy-6-polyprenolphenol 4-hydroxylase activity; 4-hydroxy-3-all-trans-polyprenylbenzoate oxygenase activity; and FAD binding, acting in ubiquinone biosynthetic process at the mitochondrial inner membrane. COQ6 is the flavin-dependent ring monooxygenase of coenzyme Q biosynthesis, performing both the C5 and the C1 hydroxylations of the head group. The upstream review is being updated to list only the two hydroxylase activities as core and to treat FAD binding as a supporting cofactor-binding activity; the pinned ingest snapshot still includes it.
Both entries type COQ6 as causative: COQ6-Related Steroid-Resistant Nephrotic Syndrome with Sensorineural Deafness; and Primary Coenzyme Q10 Deficiency. Primary Coenzyme Q10 Deficiency records the variants as germline and ClinGen classifies the gene for that disease as definitive. There the gene sits on Defective Benzoquinone Head-Group Modification, the node for the ring-modifying enzymes, and on the shared node Defective CoQ10 Biosynthesis.
The gene-specific nephrotic syndrome entry places COQ6 on Deficient C5-Ring Hydroxylation in CoQ10 Biosynthesis; its genetic record gives the variant origin as germline.
The KB mechanism nodes and ai-gene-review share ubiquinone biosynthetic process as a GO process by exact identifier.
Underlined values are claims re-computed from the knowledge base each time this page is built. The tables below are the source of truth.
ai-gene-review has this gene at status INITIALIZED; the description is shown only once the review is complete. Read the draft upstream.
Relationship is the entry's genetic[].relationship_type. untyped means the entry has a genetic record for the gene but does not type it; its free-text association is shown instead.
| Disorder | Relationship | Where the gene appears |
|---|---|---|
| COQ6-Related Steroid-Resistant Nephrotic Syndrome with Sensorineural Deafness | causative germline |
mechanism: Deficient C5-Ring Hydroxylation in CoQ10 Biosynthesis
|
| Primary Coenzyme Q10 Deficiency | causative germline |
mechanism: Defective Benzoquinone Head-Group Modification; Defective CoQ10 Biosynthesis
subtype: COQ6
scoped to subtype: COQ6
|
An entry matches when ClinGen's MONDO disease is the entry's own disease term, a subtype term, or an exact-match mapping. An amber status marks an entry ClinGen supports the gene for (Definitive, Strong or Moderate) whose own record does not type it. A Limited, Disputed or Refuted tier on such an entry is not a gap.
| ClinGen disease | MOI | Classification | dismech entry |
|---|---|---|---|
| primary coenzyme Q10 deficiency 8 MONDO:0014754 | AR | Definitive 2025-04-14 |
Primary Coenzyme Q10 Deficiency
causative
|
Identity from HGNC (snapshot 2026-10-01). Page layers are described in the gene pages documentation.