The EVA1A-AS gene (EVA1A Antisense RNA) is a long non-coding RNA that has garnered interest in various fields of research, particularly in cancer biology and possibly in aging research. Here’s a detailed description focusing on the specific requests:

### 1. Associated Genes
EVA1A-AS is known to be associated with several genes, although specific associations may depend on the context of the biological processes or diseases being studied. However, given the nature of long non-coding RNAs (lncRNAs), EVA1A-AS could interact indirectly with multiple genes that are co-regulated or functionally related. Some of the genes that have been reported in various studies include:
- **EVA1A**: The primary gene it is antisense to.
- Other targets may include genes in cellular pathways related to development, apoptosis, and stress responses, but specific names are often context-dependent.

### 2. Aging and Age-Related Diseases
While direct associations of the EVA1A-AS gene with aging or specific age-related diseases might not be extensively documented, long non-coding RNAs are often implicated in regulatory networks that modulate cellular processes associated with senescence and stress responses. Alterations in lncRNA expression have been linked to:
- **Cancer**: Deregulation of lncRNAs can contribute to tumorigenesis, a phenomenon often prevalent in older populations.
- **Cardiovascular diseases**: Some studies suggest lncRNAs may play roles in vascular aging and associated diseases.

Due to the evolving nature of aging research, it is vital to review current literature for any specific roles attributed to EVA1A-AS in age-related contexts.

### 3. Drug Interactions
Currently, there are no well-established specific drugs or drug classes that interact directly with the EVA1A-AS gene. However, it is worth noting that since it is an lncRNA, its expression may modulate responses to certain therapies, especially those targeting cancer. Research into small molecules and compounds that modulate lncRNA expressions may provide further insights into potential interactions in future studies.

### 4. Pathways and Biological Processes
The role of EVA1A-AS in biological pathways is still under investigation, but lncRNAs generally participate in various cellular processes such as:
- **Gene Regulation**: Acting as regulators of gene expression by interacting with chromatin or RNA-binding proteins.
- **Apoptosis**: Indicating potential involvement in apoptotic pathways, which may have implications for cancer.
- **Developmental Processes**: Contributions to cellular differentiation and development have been associated with lncRNAs in general.

Pathway analyses involving EVA1A-AS would need to explore co-expression networks to determine its functional associations comprehensively.

### Conclusion
The EVA1A-AS gene is a long non-coding RNA that likely plays a role in various biological processes and may impact conditions like cancer. Its exact mechanisms, especially concerning age-related effects and drug interactions, require further research and validation. Knowledge around such genes is rapidly evolving, so continued review of literature is encouraged for the latest insights.