The QTRT1P1 gene is a pseudogene that is part of the QTRT1 (QTRT1, Quinolinate phosphoribosyltransferase) locus. Pseudogenes are typically non-functional segments of DNA that resemble functional genes but are not expressed or do not yield functional proteins.

### 1. Associated Genes
Though specific details about associated genes may vary, the QTRT1 gene itself is adjacent to or may have associations with related genes that function in metabolism or neurobiology due to the nature of its primary gene family. Here are some considerations:

- **QTRT1**: The primary functional gene that encodes for a protein involved in the metabolic pathway of quinolinic acid.
- **Other loci within the vicinity**: Genes involved in metabolic processes, neurodegenerative diseases, or neurotransmitter synthesis may be indirectly associated.

For precise associational data, further genomic studies and current literature would be required to uncover any novel associations.

### 2. Aging and Age-Related Diseases
While QTRT1P1 itself is classified as a pseudogene and lacks a functional role, the related QTRT1 gene has been implicated in neurodegenerative disorders, which are often associated with aging. Specifically, the metabolism of quinolinic acid, where QTRT1 plays a role, has been studied in the context of neurological health:

- **Neurodegenerative diseases**: Altered metabolism of quinolinic acid has been linked to conditions such as Alzheimer's and Parkinson's disease, suggesting a potential indirect link between QTRT1P1 and age-related neuronal disorders.
- **Aging process**: The imbalance of neuroactive metabolites could contribute to age-related cognitive decline, even if QTRT1P1 itself is non-functional.

### 3. Known Drug Interactions
As of now, specific drugs or drug classes directly interacting with QTRT1P1 are not well-documented due to its nature as a pseudogene. However, connections to drugs may arise through its functional counterpart QTRT1, given that drugs targeting pathways involving quinolinic acid (like NMDA receptor modulators) could infer some relevance to the overall context of related metabolism.

### 4. Pathways and Biological Processes
The QTRT1 locus is part of metabolic pathways, particularly those involved in the synthesis and degradation of neurotransmitters:

- **Nicotinamide Adenine Dinucleotide (NAD+) metabolism**: Altered levels of tryptophan (from which quinolic acid is derived) may impact NAD+ biosynthesis, which is crucial in cellular energetic metabolism and age-related cellular stress responses.
- **Neuroactive compound pathways**: Involvement in processes linked to the metabolism of neurotransmitters and their analogs.

### Additional Considerations
- Since QTRT1P1 is a pseudogene, it does not encode a protein product or have a known function; its role may be limited to genetic regulation influences, such as serving as a source of regulatory RNAs under certain conditions.
- Continuous research is warranted to further investigate potential regulatory roles or impacts on genetic expression due to its proximity to functional genes like QTRT1.

Further exploration with contemporary studies and databases would be needed to provide the most recent and thorough information regarding the QTRT1P1 gene and its relationships in various biological contexts.