The SDAD1P3 gene (Sperm-Derived Activating Factor 1 Pseudogene 3) is a long non-coding RNA gene located on chromosome 9. It is classified as a pseudogene, which suggests that it may not be translated into a functional protein. However, pseudogenes can still have important regulatory roles in gene expression.

### 1. Associated Genes:
While specific genes directly associated with SDAD1P3 may not be widely documented in the literature, pseudogenes like SDAD1P3 often interact or regulate nearby genes or those within similar pathways. Exploration of the surrounding genetic region and the expression patterns in specific tissues might reveal its associations.

### 2. Aging or Age-Related Diseases:
Current literature does not provide extensive information specifically linking SDAD1P3 to aging or age-related diseases. However, as with many long non-coding RNAs, it is plausible that the gene could play roles in cellular regulatory mechanisms that might influence aging. For studying this connection, research often focuses on the expression profiles of lncRNAs in various conditions, including senescence and disease states.

### 3. Drug Interactions:
No specific drugs or drug classes have been definitively linked to SDAD1P3 in the current literature. However, it is worth noting that lncRNAs can influence drug responses due to their regulatory capabilities over neighboring genes or pathways. In cases of pharmacogenomics, lncRNAs may indirectly impact the efficacy of certain drug treatments, but clear associations with specific drugs for SDAD1P3 are not documented.

### 4. Pathways and Biological Processes:
SDAD1P3 primarily functions in gene regulation. While pseudogenes like SDAD1P3 may not be part of classical metabolic or signaling pathways, they often participate in regulatory networks involving:
- Regulation of neighboring genes through competition with mRNAs.
- Potential involvement in pathways governing cell differentiation, proliferation, and apoptosis due to their role as regulatory elements.
- Modulating responses to stress or cellular signals, although specific pathways linked to SDAD1P3 have not been well characterized.

### Conclusion:
The SDAD1P3 gene is primarily recognized as a long non-coding RNA pseudogene with potential regulatory roles. While there is limited and direct information regarding its associations with aging, drug interactions, or specific pathways, ongoing research in the field of non-coding RNAs may eventually uncover its more nuanced roles in cellular function and disease. For the most precise and evolving insights, regular reviews of current literature are recommended.