Skip to content
Buy BioDecode
Genetics Library / Genes / CCDC121

GENE REFERENCE / HGNC:25833

CCDC121

coiled-coil domain containing 121

protein-coding gene2p23.3Basic gene details

What does this gene do?

The MedlinePlus data used here does not include an explanation of what this gene does. Its name and other identifying details come from HGNC.

Related condition topics

We found no linked condition pages in the MedlinePlus data used here. The gene may still be involved in a condition.

ClinGen reviews

We found no matching ClinGen review in the data used here. This does not rule out a link between the gene and a condition.

ClinVar records

These numbers show what has been submitted to ClinVar. They cannot tell you how likely you are to have a condition.

Submitted alleles
76
Submissions for variants in or overlapping this gene
77
Submissions explicitly reporting this gene
59
Alleles reported pathogenic / likely pathogenic
Not reported
VariationIDs with uncertain significance
54
VariationIDs with conflicting classifications
0

The rows count different things: alleles, submissions or VariationIDs. Their categories can overlap, so do not add them together. Pathogenic/likely pathogenic counts exclude structural variants that merely overlap a gene. A dash in the source means “not reported,” not zero.

NCBI produces the gene-summary file each week using counts recorded at the start of the month. The numbers may differ from those on the live ClinVar website. Read the field definitions ↗

View this gene in ClinVar ↗

YOUR DNA FILE

Can your DNA file tell you about CCDC121?

From a DNA test kit (such as 23andMe, AncestryDNA or MyHeritage). These kits check a fixed list of about 600,000 to 700,000 positions across your whole genome.

From whole genome sequencing (a VCF file). Sequencing reads most of your genome. Your file lists the places where your DNA differs from the reference genome. Some regions are hard to sequence, including parts of some genes that have near-identical copies elsewhere, and a VCF file does not record which positions were read well.

If a variant is not in your file, that does not mean you don’t have it.

What BioDecode checks

BioDecode compares every variant in your file with ClinVar, on your own computer. For each match, it shows the ClinVar classification, the review status and the condition it was reported for. Your file is not uploaded.

A ClinVar classification applies to one particular variant and the condition it was reported for. It does not tell you about other variants in CCDC121.

BioDecode cannot fill gaps in your test, diagnose a condition or replace clinical testing.

Sources and dates

The source information on this page last changed on 2026-09-18.

HGNC Source details

Open source record ↗

Source release: Tue, 15 Sep 2026 13:48:06 GMT
Source record updated: 2023-03-15

SHA-256: 54b5b60ab82d1640a66e98fb4eec2f30ba5807c2d5c684150f17f72554cd39aa

ClinVar Source details

Open source record ↗

Source release: Sun, 13 Sep 2026 14:50:41 GMT

SHA-256: 241bdb77762102837f3ac88682c84b29f99ef59195f1ac3fa453287555736e9a

About the library sources · Latest validated release · Record ed937b53f9e3