The CACNA1C-AS4 gene is classified as a long non-coding RNA (lncRNA) gene. It is located near the CACNA1C gene, which encodes a subunit of voltage-gated calcium channels. Here are the requested details regarding CACNA1C-AS4:

**1. Associated Genes:**
- The primary gene associated with CACNA1C-AS4 is **CACNA1C** itself, as they are closely situated on the same chromosome.
- Other genes potentially linked to CACNA1C-AS4 through regulatory networks or interactions include **CACNA1D**, **CACNA1S**, and **CACNB2**. These genes are also part of the calcium channel complex and may have overlapping functions in calcium signaling.

**2. Age-related Associations:**
- Though specific studies on CACNA1C-AS4 and aging are limited, the CACNA1C gene has been correlated with neurological functions and cardiovascular health, both of which are pertinent to age-related diseases such as Alzheimer's Disease and heart failure.
- Research indicates that mutations or dysregulations of calcium channels, including the CACNA1C gene, may influence age-related cognitive decline and neurodegeneration.
- Some studies have associated alterations in calcium signaling with mechanisms of aging, indicating that changes in CACNA1C expression or function could potentially play a role in age-related pathologies.

**3. Drug Interactions:**
- Drugs and drug classes that interact with the functions of the CACNA1C gene include calcium channel blockers (e.g., dihydropyridines like amlodipine, non-dihydropyridines like diltiazem), which modulate the activity of calcium channels.
- While specific interactions with CACNA1C-AS4 as an lncRNA are not well-studied, its proximity to CACNA1C and function as a regulatory element suggests it may influence responses to these drugs indirectly.

**4. Pathways and Biological Processes:**
- CACNA1C-AS4 is involved in several biological processes, primarily related to calcium ion transport and signaling pathways.
- It may participate in the regulation of calcium-dependent signaling components in neurons and muscle cells.
- Additional pathways potentially influenced by CACNA1C-AS4 include those related to synaptic transmission, excitability of neurons, and muscle contraction, given its relationship to calcium channels.

In summary, while CACNA1C-AS4 is primarily recognized for its regulatory role regarding the adjacent CACNA1C gene, its implications in aging, drug interactions, and biological pathways are closely linked to calcium signaling and homeostasis. Ongoing research is likely necessary to clarify the full spectrum of its functions in health and disease, especially concerning aging.