The RNF113A gene is a multifaceted gene that plays significant roles in pre-mRNA splicing, E3 ubiquitin ligase activity, and DNA repair. Here’s a detailed overview based on your requests:

### 1. Associated Genes
While the summaries you've provided do not mention specific associated genes, RNF113A may have functional relationships with various genes involved in the spliceosome machinery, DNA repair mechanisms, and ubiquitin pathways. Some potential associations based on its functions include:
- **SNRNP200/BRR2:** A component involved in the spliceosome. RNF113A ubiquitinates this protein.
- **ALKBH3:** This gene encodes a DNA repair enzyme that is recruited to sites of DNA damage by RNF113A-mediated ubiquitination.
- **CXCR4:** Although not directly associated as a “gene” in the sense of functionality, RNF113A impacts the degradation of the CXCR4 protein, which is critical in various signaling processes.

### 2. Aging and Age-Related Diseases
- RNF113A is potentially implicated in cellular processes that influence aging, particularly through its role in DNA repair and the regulation of protein degradation pathways. Dysfunction in these processes is often associated with age-related diseases, including cancer.
- Ubiquitination pathways mediated by RNF113A may also play a role in protein homeostasis and cellular senescence, which can contribute to the aging process.

No direct links or studies primarily focusing on RNF113A and aging have been extensively detailed in existing literature as of October 2023; however, its roles suggest potential relevance to the field of senescence and genomic stability.

### 3. Drug Interactions
There are currently no specific drugs or drug classes extensively studied in direct interaction with RNF113A. However, since RNF113A is involved in processes relevant to ubiquitination and DNA repair, drugs targeting these pathways (e.g., proteasome inhibitors, DNA-damaging agents) may indirectly impact its regulatory roles. Further research would be required to elucidate specific drug interactions.

### 4. Pathways and Biological Processes
RNF113A participates in various cellular pathways and biological processes, including but not limited to:
- **Molecular Functions:**
  - E3 ubiquitin-protein ligase activity, essential for tagging proteins for degradation via the ubiquitin-proteasome pathway.
  - Protein binding involved in mediating protein-protein interactions.
  
- **Biological Processes:**
  - **Pre-mRNA Splicing:** Functions within the minor spliceosome to facilitate the splicing of U12-type introns—critical for mRNA maturation.
  - **DNA Repair:** Functions in the repair of damaged DNA, particularly by mediating the recruitment of repair complexes through 'Lys-63'-linked polyubiquitination.
  - **Signal Termination:** Ubiquitination of CXCR4, contributing to the regulation of pathways related to immune responses and cell signaling.

These insights into RNF113A underscore its complexity and importance in maintaining cellular functions, with potential implications in cancer and other diseases linked to genomic instability. Further research may reveal more about its roles in aging and the therapeutic potential of modulating its activity.