The gene **SNORD115-4**, also known as **Small Nucleolar RNA, C/D Box 115-4**, is part of the SNORD115 gene cluster, which is a group of small nucleolar RNAs (snoRNAs) involved in the modification of other RNA molecules, particularly ribosomal RNA (rRNA). Here’s a detailed overview of SNORD115-4, along with additional requested information:

### 1. Associated Genes:
Though the available summaries typically focus on the specific gene, SNORD115-4 is known to be part of a larger family of snoRNAs, which often share common regulatory mechanisms and functions. The following genes are related or associated with SNORD115-4 in terms of functional roles in RNA processing:
- **SNORD115**: The parent gene from which SNORD115-4 is derived, which includes multiple other snoRNAs.
- **SNORD116-11**: Another related gene affected in certain neurodevelopmental disorders.
- **C/D box snoRNA genes**: Such as **SNORD3**, which are known to share similar functions in rRNA modification.

### 2. Aging and Age-related Diseases:
Current research suggests potential connections between snoRNAs and age-related processes, although direct associations specifically involving SNORD115-4 are limited. Some general points of relevance include:
- SnoRNAs like SNORD115 have been implicated in **neurodevelopmental disorders**, and emerging evidence suggests that some dysregulation in snoRNA expression may be linked to neurodegenerative diseases such as **Alzheimer’s disease** and **Parkinson’s disease**.
- The SNORD115 gene family has been noted for its potential involvement in processes linked to **neurodevelopment** and **cognitive function**, both of which can be impacted by aging.

### 3. Drug Interactions:
As of the latest knowledge cuts off in October 2023, there are no specific drugs or drug classes directly targeting SNORD115-4. Research on drug interactions with snoRNAs is still in its infancy, with limited clinical implications observed. However, any therapeutic strategy involving RNA modification may indirectly relate to the regulatory capacity of snoRNAs.

### 4. Pathways and Biological Processes:
SNORD115-4 is involved in several key biological processes, primarily related to:
- **Ribosome biogenesis**: SNORD115-4 plays a role in the modification of rRNA, which is critical for the proper assembly of ribosomes, thus impacting overall cellular function.
- **RNA methylation**: This process involves the modification of rRNA, and SNORD115-4 facilitates the 2'-O-methylation of specific nucleotides, which is essential for the structural integrity and functionality of rRNA.
- **Small nucleolar RNA (snoRNA) biogenesis**: As a member of the snoRNA family, SNORD115-4 is involved in the synthesis and processing of small nucleolar RNAs.

In summary, SNORD115-4 is an important small nucleolar RNA involved in ribosomal RNA processing and related pathways. Its association with other snoRNA genes, potential links to neurodevelopmental and age-related disorders, and involvement in critical biological processes highlight its significance in molecular biology and genetics. Further research is necessary to elucidate more specific pathways and interactions related to aging and therapeutic implications.