The **EIF3KP2** gene encodes a protein that is involved in the regulation of the initiation of translation by interacting with the eukaryotic translation initiation factor 3 (eIF3) complex. Here, I'll provide additional details based on your requirements.

### 1. Associated Genes
While specific interactions can vary based on tissue types and conditions, EIF3KP2 has been reported to be associated with genes involved in ribosome biogenesis and translation regulation. Potentially relevant genes could include those encoding other initiation factors such as:
- **EIF3A** (Eukaryotic Translation Initiation Factor 3 Subunit A)
- **EIF3B** (Eukaryotic Translation Initiation Factor 3 Subunit B)
- **EIF4E** (Eukaryotic Translation Initiation Factor 4E)

Additionally, because EIF3KP2 is part of the larger eIF3 complex, other components of this complex may also have regulatory interactions.

### 2. Aging and Age-related Diseases
Research has suggested that discrepancies in translation regulation can be linked to aging and age-related diseases. While specific studies directly linking EIF3KP2 to aging mechanisms may be limited, dysregulation of translation factors can contribute to:
- Cellular senescence
- Neurodegenerative diseases (e.g., Alzheimer's Disease), where translation efficiency decreases with age.
- Cancer development, which is often associated with altered translational control pathways.

### 3. Drug Interactions
As for known drug interactions involving EIF3KP2, translation initiation factors can serve as potential therapeutic targets. Drugs or classes that may influence translational regulation (and might indirectly influence EIF3KP2 function) include:
- **mTOR inhibitors**: Such as rapamycin, which target pathways involved in cell growth and proliferation. mTOR activity influences the translation of mRNAs, including those involved in the regulation of translation initiation.
- **Proteasome inhibitors**: These can affect the degradation of proteins involved in translation control, though specific effects on EIF3KP2 would require further empirical investigation.
  
It's important to note that direct pharmacological interactions with EIF3KP2 specifically may not be well characterized.

### 4. Pathways and Biological Processes
EIF3KP2 is primarily involved in:
- **Translation initiation**: As part of the eIF3 complex, EIF3KP2 plays a crucial role in the assembly of the translation initiation complex.
  
**Biological processes associated with EIF3KP2 include**:
- **Protein synthesis**: Facilitating the transfer of mRNA to ribosomes.
- **Regulation of gene expression**: By controlling the efficiency of translation initiation.
- **Response to stress**: Some translation factors are involved in the cell's response to various stressors, which can include oxidative stress and nutrient deprivation.

EIF3KP2 may also be implicated in pathways that relate to mRNA surveillance, cell cycle regulation, and apoptosis due to its role in translation control.

### Conclusion
The EIF3KP2 gene plays a vital role in the regulation of protein translation, and its involvement in various biological processes suggests important implications in cell regulation, aging, and potential therapeutic interventions involving translation regulation. Further research may reveal more specific interactions and roles, particularly in the context of aging and disease.