The RNU7-119P gene is part of the small nucleolar RNA (snoRNA) family, specifically classified as a polycistronic non-coding RNA. Here’s a detailed overview based on your requirements:

### 1. Associated Genes
RNU7-119P is a member of a broader family of small non-coding RNAs, often related to other snoRNA and scaRNA genes. In particular, snoRNA genes share common functions and might be associated with the following genes:

- **RNU7-1**: Another snoRNA, related in function and often found clustered with others in the nucleolar regions.
- **Other snoRNA genes**: There are numerous other snoRNAs such as RNU2, RNU4B, and various U-boxed RNAs that may share regulatory pathways or have expression overlaps with RNU7-119P.

### 2. Aging or Age-Related Diseases 
While specific studies linking RNU7-119P to aging directly may be limited, snoRNAs have been implicated in the regulation of cellular processes including ribosomal RNA modification, which could indirectly influence aging and age-related diseases. There are several areas where this might be relevant:
- **Cellular senescence**: Certain snoRNAs have been shown to be involved in the regulation of cellular senescence-related pathways. 
- **Cancer**: Alterations in the expression of some snoRNAs, including those similar to RNU7-119P, have been associated with various cancers, which become more prevalent with age.

### 3. Drug or Drug Classes Interaction
Direct interactions between RNU7-119P and specific drugs are not well-characterized. However, as a snoRNA, it does not encode proteins directly and therefore is less likely to have been the target of conventional drug screenings. That said, drugs that broadly affect RNA metabolism and splicing may indirectly influence its function or expression. Potential classes include:
- **Antibiotics**: Certain antibiotics that target RNA polymerases can affect overall RNA transcription, including non-coding RNAs.
- **Anticancer therapies**: Compounds that modify the RNA splicing machinery could also have implications on snoRNA functions.

### 4. Pathways and Biological Processes
RNU7-119P is involved in several key biological processes, including:
- **Ribosome biogenesis**: snoRNAs play crucial roles in the chemical modification of rRNA and assembly of ribonucleoproteins, which are vital for ribosome functionality.
- **RNA modification**: It is involved in guiding the modification of target rRNAs through methylation or pseudouridylation.
- **Gene regulation**: As a non-coding RNA, RNU7-119P may have roles in regulating gene expression at various levels.

Understanding the exact roles and interactions of RNU7-119P is an ongoing area of research, and its functions may continue to reveal insights into cellular processes that relate to health and disease, particularly in the context of age-related conditions and cellular homeostasis.