The **CCDC158** gene, also known as "coiled-coil domain containing 158," is a protein-coding gene involved in various cellular processes. Below is a more detailed description based on your requests:

### 1. Associated Genes
While the NCBI and UniProt summaries do not provide specific associated genes, CCDC158 may be functionally linked with other genes that are involved in coiled-coil domain containing proteins or similar cellular pathways. Research studies often highlight interaction networks or co-expression patterns in context-specific analyses, which could identify genes such as:

- **CCDC124** (coiled-coil domain containing 124)
- **CCDC88B** (coiled-coil domain containing 88B)
- **CCDC28B** (coiled-coil domain containing 28B)

Additionally, genes involved in cilia formation, cell signaling, and cytoskeletal organization may be related due to the coiled-coil domain's structural role.

### 2. Aging or Age-Related Diseases
The direct association of CCDC158 with aging or age-related diseases is currently limited in readily available literature. However, genes in the coiled-coil protein family can sometimes be implicated in cellular mechanisms like maintenance of cellular structures and signaling pathways. If CCDC158 participates in such pathways, it could theoretically influence processes like cellular senescence or function in age-related conditions. Research into genetic influences on aging typically involves comprehensive genomic studies, so specific connections may emerge as the field progresses.

### 3. Drug Interactions
As of the latest available data, there are no specific drugs or drug classes known to directly interact with CCDC158. The potential for interaction may exist, particularly if it participates in pathways relevant to drug metabolism or cellular responses. More research might be necessary to elucidate these interactions. 

### 4. Pathways and Biological Processes
CCDC158 is often involved in various biological processes, which can include:

- **Cilia formation and maintenance**: Many coiled-coil proteins play critical roles in the structural integrity of cilia, which are essential for motility and signaling in cells.
- **Cell proliferation**: As a structural component in cells, disruptions in its function may influence cell cycle regulation.
- **Cytoskeletal organization**: The gene may be involved in the organization of the cytoskeleton, impacting cellular shape and intracellular transport.

Further pathway-specific data can sometimes be sourced from databases like KEGG or Reactome, aiming to elucidate the more nuanced roles of CCDC158 in cellular mechanisms.

### Conclusion
The CCDC158 gene represents a member of a broader family of proteins with potential roles in crucial cellular functions. While detailed studies on its specific interactions in disease states, drug associations, and signaling pathways are still ongoing, it is clear that as research develops, more connections will be uncovered concerning this gene's biological significance.