The RN7SL720P gene is a pseudogene located on the human genome, specifically classified as a small nucleolar RNA (snoRNA). Here are the details related to your queries:

### 1. Associated Genes
As RN7SL720P is a pseudogene and an RNA gene, it might not have direct associations with other genes in terms of protein-coding functions. However, small nucleolar RNAs (snoRNAs) are generally involved in the modification of other RNA molecules, particularly ribosomal RNA (rRNA), small nuclear RNA (snRNA), and possibly messenger RNA (mRNA). Specific interactions or associations with other genes are not commonly catalogued for pseudogenes like RN7SL720P. Additional snoRNAs that could be related to RNA processing and modification include:

- Other snoRNAs in the same genomic region or other snoRNA genes with similar functions.
- Genes encoding proteins involved in RNA modification and processing might also exhibit some level of association.

### 2. Aging and Age-related Diseases
There is limited literature specifically addressing the RN7SL720P gene's association with aging or age-related diseases. Pseudogenes, particularly snoRNAs, can have regulatory roles, and changes in snoRNA expression profiles have been indirectly linked to processes like cellular senescence and some age-related pathologies. However, no concrete evidence directly ties RN7SL720P to aging or age-related diseases in human studies.

### 3. Drug Interactions
Due to the nature of RN7SL720P as a pseudogene and its role as a non-coding RNA, there are no known direct drug interactions. Research might identify pathways modulated by the expression of snoRNAs or their proportions in the context of certain diseases, but specific drugs or drug classes targeting RN7SL720P have not been reported in current databases.

### 4. Pathways and Biological Processes
RN7SL720P is involved in the following biological processes typical of snoRNAs:

- **Ribosome biogenesis**: snoRNAs play an essential role in the processing and modification of pre-rRNA molecules to form mature ribosomal RNAs, facilitating ribosome assembly.
- **RNA modification**: It may be involved in post-transcriptional modifications such as methylation and pseudouridylation of RNA.
  
Since RN7SL720P is a pseudogene, it may also potentially influence the expression of related functional RNA genes, but specific information would require experimental validation.

### Summary
The RN7SL720P gene serves as a small nucleolar RNA pseudogene involved in RNA modification and processing, with limited direct associations with aging, diseases, drug interactions, or other genes. More research may be necessary to uncover potential regulatory roles or indirect influences in RNA biology or pathophysiology.