### Overview of SNORD90 Gene

**Gene Symbol**: SNORD90

**Function**: SNORD90 (small nucleolar RNA, C/D box 90) is classified as a small nucleolar RNA (snoRNA) that plays a role in the nucleolar processing of pre-rRNA. SnoRNAs like SNORD90 are crucial for guiding post-transcriptional modifications of rRNA through methylation and pseudouridylation processes. 

### 1. Associated Genes
Although specific associations of SNORD90 with other genes may not always be prominently characterized, snoRNAs are generally involved in the regulation of ribosomal RNA and could be linked to genes involved in ribosome biogenesis. Some genes that may have potential associations based on functional context include:

- NOP58 (Nucleolar Protein 58 kDa): Often associated with snoRNA processing.
- FBL (Fibrillarin): Another protein essential for snoRNA function in rRNA modification.

Additional studies would be necessary to determine specific interactors or regulatory relationships directly involving SNORD90.

### 2. Aging or Age-Related Diseases 
Currently, there is limited specific information relating directly to SNORD90 and aging or age-related diseases in major databases. However, as snoRNAs play an essential role in ribosome biogenesis and cellular metabolism, dysregulation of snoRNA expression has been implicated in age-related conditions such as cancer and neurodegenerative diseases. It is conceivable that alterations in the levels or functionality of SNORD90 may contribute to the aging process or age-related pathologies indirectly, but concrete links specifically relating to SNORD90 would require further research.

### 3. Drug Interactions
Currently, no specific drugs or drug classes are documented to interact directly with the SNORD90 gene. However, it is important to note that compounds affecting ribosomal biogenesis, translation, or general RNA processing may have indirect effects on snoRNA functions. For example, certain antibiotic classes that target ribosomes may potentially interfere with the processes involving snoRNA modification, although not explicitly studied in the context of SNORD90.

### 4. Pathways and Biological Processes

**Biological Processes**:
- **Ribosome biogenesis**: SNORD90 is involved in the maturation of rRNA, contributing to the assembly of functional ribosomes.
- **RNA methylation**: As part of the snoRNA family, SNORD90 contributes to guide methylation modifications.

**Pathways**:
- SNORD90 may participate in pathways such as the "snoRNA-mediated modification of rRNA" which ultimately impacts ribosomal function and cellular protein synthesis.

### Conclusion
SNORD90 is a small nucleolar RNA crucial for rRNA modification and ribosome biogenesis. Despite the limited functional characterization specifically linking SNORD90 to diseases of aging or specific drug interactions, its fundamental role in RNA processing positions it as a potential area of interest for age-related research and other cellular mechanisms. Further research would benefit the understanding of SNORD90's role and any implications it may have in various biological contexts.