The RGPD4-AS1 gene, also known as RGPD4 antisense RNA 1, is a long non-coding RNA (lncRNA) that has gained attention in the context of gene regulation and various biological processes. Below, I provide a detailed summary that includes the requested information.

### 1. Associated Genes
RGPD4-AS1 has been implicated in various genomic contexts, often being studied alongside genes involved in similar regulatory networks or pathways. While there may not be a direct association with a specific set of genes mentioned explicitly in the NCBI or UniProt summaries, lncRNAs like RGPD4-AS1 typically interact with or regulate a range of genes. Some studies have indicated associations with the following genes:
- **RGPD4**: The sense strand counterpart of RGPD4-AS1, which is located in close proximity on the genome and may exhibit co-regulation.
- Other lncRNAs and protein-coding genes involved in pathways related to cell growth, differentiation, and apoptosis.

### 2. Details Related to Aging or Age-Related Diseases
RGPD4-AS1 has been studied with respect to its potential roles in tumorigenesis and various age-related diseases, such as cancer. The deregulation of lncRNAs like RGPD4-AS1 has been implicated in:
- **Cancer**: Many lncRNAs are known to play a role in the progression and metastasis of cancers, including those common in aging individuals (e.g., breast cancer, lung cancer).
- **Neurodegenerative Diseases**: While specific studies directly linking RGPD4-AS1 to neurodegenerative diseases are limited, lncRNAs are known to have roles in neuronal function and survival, which may indirectly connect to aging processes.

### 3. Known Drug Interactions
At this time, there are no specific drugs or drug classes that are definitively known to interact with RGPD4-AS1. However, it is important to note that:
- Long non-coding RNAs can influence the efficacy of cancer treatments by regulating genes involved in cell cycle and apoptosis, but specific drug interactions remain to be extensively characterized.
- Potential interactions may come through co-regulation with cancer-associated pathways that are targeted by chemotherapeutic strategies.

### 4. Pathways and Biological Processes
RGPD4-AS1 is involved in various biological processes, which may include:
- **Gene Regulation**: As a lncRNA, RGPD4-AS1 may participate in chromatin remodeling or transcriptional regulation, affecting the expression of nearby and distal genes.
- **Cell Proliferation and Differentiation**: Studies suggest involvement in pathways regulating cellular growth and development.
- **Signal Transduction**: LncRNAs often interact with signaling pathways, potentially influencing responses to environmental stimuli or cellular stress.

### Conclusion
RGPD4-AS1 is a promising candidate for further research in aging and age-related diseases, particularly cancer. Continued exploration into its associated genes, potential drug interactions, and involvement in specific biological pathways will deepen our understanding of its functional implications. As research evolves, it may reveal more about how RGPD4-AS1 and similar lncRNAs contribute to disease mechanisms and therapeutic strategies.