The CDK11A gene (cyclin-dependent kinase 11A) is indeed an important gene within the framework of cell cycle control and apoptosis regulation. Below, I've expanded on the information provided, covering the requested aspects:

### 1. Associated Genes
CDK11A has notable associations with several genes and proteins, particularly those involved in the cell cycle and apoptosis. Some of these include:
- **CDK11B**: A gene closely related to CDK11A, also encoding a cyclin-dependent kinase that may share functional similarities.
- **Caspases**: Enzymes involved in apoptosis, which can cleave and activate CDK11A.
- **SFRS7**: A splicing factor that may be phosphorylated by CDK11A, indicating a role in pre-mRNA splicing.
- **p21 (CDKN1A)**: A cyclin-dependent kinase inhibitor that can be regulated by the cell cycle machinery involving CDK11A.

### 2. Aging and Age-Related Diseases
Although the research on CDK11A in relation to aging is still emerging, there are some insights:
- **Cellular Senescence**: CDK11A may contribute to the regulation of cellular senescence through its effects on the cell cycle and apoptosis. Dysregulation of cell cycle control is a hallmark of aging and age-related diseases, including cancer.
- **Neurodegenerative Diseases**: Given that alterations in CDK11A have been observed in neuroblastoma, it may also play a role in pathways linked to neurodegeneration. The involvement of apoptosis pathways suggests a potential connection with age-related neurological disorders.

### 3. Drug Interactions
CDK11A may interact with several molecules and drugs, though specific interactions can vary. Notable classes include:
- **Inhibitors of Cyclin-Dependent Kinases (CDK Inhibitors)**: These drugs, such as flavopiridol and roscovitine, are designed to inhibit CDK activity broadly, potentially affecting CDK11A.
- **Chemotherapeutic Agents**: Some cancer therapies that interfere with cell cycle progression could indirectly impact the function of CDK11A, aiding in the treatment of tumors where CDK11A is altered.

### 4. Pathways and Biological Processes
CDK11A is involved in a variety of critical biological processes, including:
- **Cell Cycle Regulation**: Plays a significant role in the control of cell cycle checkpoints.
- **Cytokinesis**: Facilitates the final separation of two daughter cells.
- **Apoptosis**: Influences the programmed cell death pathways, crucial in development and elimination of defective cells.
- **Pre-mRNA Splicing**: As indicated, particularly the p110 isoforms of CDK11A, which may phosphorylate splicing factors and thereby influence gene expression.

### Conclusion
CDK11A is a multifunctional protein kinase critically positioned at the intersection of cell cycle control and apoptosis. Its implications in neuroblastoma highlight its relevance in tumor biology, while potential interactions with therapeutic agents underscore its importance in drug development for cancers and perhaps age-related conditions. Further research is essential to fully elucidate its roles and associations with aging and disease.