The TMEM132A gene (transmembrane protein 132A) is involved in various biological processes and exhibits important roles in cellular mechanisms. Here is a detailed overview, including the specific requests in your question:

### General Information
- **Gene Symbol:** TMEM132A
- **Chromosomal Location:** Human chromosome 3q26.31
- **Function:** The TMEM132A protein is similar to the rat Grp78-binding protein (GBP) and may play a crucial role in brain development, cell survival, and regulation of gene expression, especially in response to cAMP signaling via STAT3 phosphorylation.

### 1. Associated Genes
TMEM132A has been implicated in interactions with several other genes, some of which include:
- **STAT3** (Signal Transducer and Activator of Transcription 3): Regulates GFAP gene expression influenced by TMEM132A.
- **GBPs** (Grp78-binding proteins): Related family proteins involved in stress responses.
- **BCL2** (B-cell lymphoma 2): Involved in the regulation of cell death which may be influenced by TMEM132A.
- **GFAP** (Glial Fibrillary Acidic Protein): Important in astrocyte function and nervous system integrity.

### 2. Aging and Age-Related Diseases
- **Neurodegenerative Disorders:** Alterations in gene expression of TMEM132A have been linked to neurodegenerative diseases, highlighting its potential role in neuronal cell survival and function.
- **Cognitive Function:** Given its role in brain development, discrepancies in TMEM132A function might be associated with cognitive decline with aging. However, specific empirical data linking TMEM132A to age-related decline are limited and warrant further research.

### 3. Drug Interactions
While specific drugs targeting TMEM132A have not been extensively documented, broader classes of drugs that may influence its associated pathways include:
- **CAMP modulators:** Drugs affecting cAMP pathways could indirectly influence TMEM132A activity, due to its role in cAMP-induced GFAP expression regulation.
- **Neuroprotective agents:** Given its potential role in resistance to cell death, neuroprotective drugs may also interact indirectly with TMEM132A.

### 4. Pathways and Biological Processes
TMEM132A is involved in multiple biological pathways and processes, including:
- **Cellular Response to Stress:** Plays a role in the cellular response to various stressors, including oxidative stress and nutrient deprivation.
- **Cell Survival and Apoptosis:** Involved in mediating resistance to apoptosis, particularly under conditions of serum starvation.
- **Neurodevelopmental Pathways:** Contributes to processes underlying brain development and function.
- **Signal Transduction:** Participates in signaling pathways related to cAMP and stat signaling, influencing gene expression and cellular physiology.

### Conclusion
The TMEM132A gene encodes a protein that plays a multifaceted role in neuronal development and signaling. Though associated with other genes and potential implications in aging-related diseases, further research is necessary to clarify its exact roles and therapeutic target potential in age-related conditions and other diseases.