The OR7E90P gene is a member of the olfactory receptor gene family, contributing to the sense of smell by encoding a receptor that interacts with odorant molecules.

### 1. Associated Genes
While the NCBI and UniProt summaries focus on OR7E90P, specific information about other genes associated with OR7E90P can be found in various databases that list gene co-expression, genetic associations, or pathway collaborations. However, specific associated genes for OR7E90P are not commonly stated. Identifying nearby or co-regulated genes in the human olfactory receptor gene cluster (located on chromosome 14) may provide insight into potential associations, but that information is generally broad and not specifically linked to OR7E90P.

### 2. Aging and Age-Related Disease Connection
Olfactory dysfunction can be a marker for various age-related diseases, such as Alzheimer’s disease and Parkinson’s disease. While specific studies focusing solely on OR7E90P and its role in aging or age-related diseases are not widely documented, olfactory receptors in general are implicated in neurodegenerative processes. Reduced olfactory function has been correlated with cognitive decline and may provide clues to early diagnosis in the context of aging.

### 3. Drug Interactions
Currently, there are no specific drugs or drug classes documented as directly interacting with the OR7E90P gene. However, research in olfactory receptors, including those in the OR family, is ongoing, and the modulation of these receptors may influence responses to various drugs, especially those affecting neurotransmitter pathways. More detailed pharmacological research may reveal potential interactions.

### 4. Pathways and Biological Processes
The OR7E90P gene is involved in the following biological processes:
- **Olfactory signalling pathway**: This gene plays a critical role in the detection of odorants and the initiation of the olfactory signaling cascade.
- **G-protein coupled receptor signaling pathway**: Olfactory receptors like OR7E90P are part of this extensive signaling network, mediating the biological response to smell.
- **Sensory perception of smell**: The gene contributes directly to the perception process, enabling organisms to detect and differentiate various aroma compounds.

In summary, while OR7E90P is primarily recognized for its role in olfactory signaling, connections to aging and drug interactions are indirect and warrant further research for comprehensive insights.