The **TUBB8P3** gene, also known as **Tubulin Beta 8 Paralog 3**, is a pseudogene located on the human genome. As such, it is an inactive copy of a gene that was once functional in a common ancestor species but has since undergone mutations that prevent it from being expressed in a meaningful way.

### Summary of Known Information:

- **Gene Symbol**: TUBB8P3
- **Type**: Pseudogene
- **Location**: Found on chromosome 20.

### 1. Associated Genes:
Although TUBB8P3 itself is a pseudogene, it may be associated with other tubulin family members due to its naming convention. These genes can include:

- **TUBB8**: Embryonic tubulin involved in processes like oocyte maturation and related to fertilization.
- **TUBB**: Refers to the general tubulin beta family genes which play roles in microtubule formation.

### 2. Aging and Age-Related Diseases:
Currently, there is limited specific information regarding the direct effects of TUBB8P3 on aging or age-related diseases, as it is classified as a pseudogene. However, since it is related to the tubulin family, any potential disruptions in tubulin function can indirectly influence processes like cellular division, neurodegeneration, and other aging-related pathways. Some studies in the context of related tubulin genes (e.g., TUBB8, TUBA) might indicate involvement in cellular stress responses and reproductive aging.

### 3. Drug Interactions:
As TUBB8P3 is a pseudogene, it does not have known interactions with drugs. However, related tubulin genes—such as TUBB8—are known to interact with various chemotherapeutics that target microtubules, like:

- **Taxanes (e.g., Paclitaxel)**: Drugs that stabilize microtubules and prevent their depolymerization.
- **Vinca alkaloids (e.g., Vincristine)**: Agents that inhibit microtubule polymerization.

These interactions can be relevant in the context of functions attributed to active members of the tubulin family. 

### 4. Pathways and Biological Processes:
TUBB8P3 does not participate in any known specific biological processes or pathways due to its nature as a pseudogene. However, the active tubulin genes are involved in the following general pathways:

- **Microtubule dynamics**: Essential for cellular structure and transport.
- **Cell division**: Critical for mitosis and meiosis.
- **Organelle transport**: Involvement in vesicular transport and organelle positioning.

### Conclusion:
While TUBB8P3 itself does not exert any direct functional effects due to its pseudogene status, its proximity and relation to functional tubulin genes suggest a potential indirect role concerning cellular processes, and possible implications in age-related cellular dynamics warrant further exploration. Research focusing on the active family members may provide insights that could be tangentially related to TUBB8P3.