The RNVU1-23 gene, also referred to as RNU1-23, belongs to the family of small nucleolar RNAs (snoRNAs), which play critical roles in the modification and processing of ribosomal RNAs (rRNAs). Here’s the detailed information based on your request:

### 1. Associated Genes
RNVU1-23 may be associated with other snoRNA genes; however, specific known associations outside of the provided summaries might not be extensively documented. It is also important to note that snoRNAs often function in conjunction with various proteins involved in ribonucleoprotein complex assembly, which may indirectly link them to other genes responsible for rRNA processing and modifications.

### 2. Aging or Age-related Diseases
While there might not be direct research specifically implicating RNVU1-23 in aging or age-related diseases, snoRNAs collectively have been found to have roles in ribosome biogenesis and cellular stress responses, both of which are crucial in aging processes. Some snoRNAs in the same category as RNVU1-23 have been implicated in age-related pathologies like cancer and neurodegenerative diseases. However, specific studies focusing on RNVU1-23 in this context are lacking.

### 3. Drug Interactions
Currently, there are no specific drugs or drug classes directly reported to interact with the RNVU1-23 gene. Given the nature of snoRNAs and their primary roles in endogenous cellular processes, targeted pharmacological interactions may not be well characterized.

### 4. Pathways and Biological Processes
The RNVU1-23 gene is involved primarily in:
- **Ribosome Biogenesis**: SnoRNAs are known to guide the chemical modifications (such as methylation and pseudouridylation) of rRNA, which is essential for the proper assembly and function of the ribosome.
- **RNA Processing**: It participates in the processing of pre-rRNA into mature rRNA forms.
- **Nuclear Function**: As a snoRNA, RNVU1-23 is localized in the nucleolus—an organelle critical for ribosome production and cellular stress response.
  
The precise pathways involving RNVU1-23 may not be fully elucidated yet but are likely linked to general cellular ribonucleoprotein complex functions and rRNA processing pathways.

### Summary
RNVU1-23 is a small nucleolar RNA involved in ribosome biogenesis, though specific associations with other genes, aging, age-related diseases, drug interactions, and detailed pathways are areas where further research may be required for comprehensive insights. The functional characterization of snoRNAs continues to evolve, making them a significant area of interest in genomic studies and their implications in cellular health and disease.