The ZNF750 gene, also known as "Zinc Finger Protein 750," plays a crucial role in the differentiation of the epidermis and is particularly important in maintaining skin integrity. Here's a detailed overview based on your request:

### 1. Other Genes Associated with ZNF750:
- **KLF4 (Kruppel-like factor 4)**: Directly activated by ZNF750, promoting late epidermal differentiation.
- **TP63 (Tumor Protein p63)**: ZNF750 acts downstream of p63, which is crucial for epidermal and ectodermal development.
- **TP73 (Tumor Protein p73)**: Although not directly mentioned, TP73 shares functional similarities with TP63 and may have overlapping regulatory effects in epithelial tissues.
- **GRHL2 (Grainyhead-like 2)**: Involved in similar processes of epithelial differentiation and may interact with ZNF750 in transcriptional networks.
- **SKP2 (S-phase kinase-associated protein 2)**: Associated with cellular proliferation and differentiation processes.

### 2. Aging or Age-Related Diseases:
- **Skin Aging**: ZNF750 is involved in skin differentiation processes which may correlate with aging, particularly in how skin cells respond to environmental stressors and healing.
- **Psoriasis and Other Dermatitis**: Mutations in ZNF750 have been implicated in skin conditions with age-related components like seborrheic dermatitis, which might worsen with age.
- **Cancer**: The function of ZNF750 in cell differentiation suggests potential implications in skin cancer, particularly in aging populations where skin regeneration becomes less efficient.

### 3. Known Drug Interactions:
- **Antineoplastic Agents**: Investigationally, ZNF750 may have regulatory roles that influence cellular response to cancer therapies, though specific drug classes influencing ZNF750 directly are not extensively characterized.
- **Topical Treatments for Dermatitis**: While no specific drugs target ZNF750, treatments for dermatitis and psoriasis might indirectly affect its expression or activity.
- **Retinoids**: As ZNF750 is involved in differentiation, compounds like retinoids, known for their action in epidermis differentiation and dermatological treatments, might interact indirectly.

### 4. Pathways and Biological Processes:
- **Epidermal Differentiation**: ZNF750 is primarily involved in epidermal development and differentiation, promoting expression of late epidermal genes.
- **Cell Growth and Maintenance**: It may play roles in regulating cellular growth and homeostasis, particularly in stratified epithelia.
- **Transcription Regulation**: As a transcription factor, ZNF750 is involved in multiple regulatory pathways for gene expression modulation influencing skin barrier formation and integrity.
- **Keratinocyte Function**: It is significantly involved in keratinocyte-specific processes critical for skin health and regeneration.

### References to Further Study
- Human Gene Nomenclature Committee (HGNC) provides a comprehensive resource for studying gene functions and nomenclature.
- Research literature exploring ZNF750’s roles in specific skin diseases and differentiation mechanisms will provide a deeper understanding of its function. 

This overview emphasizes the roles ZNF750 plays in epidermal differentiation, its genetic and functional associations, and its relevance in skin health and disease across different age groups. Further studies on ZNF750 could elucidate more direct links with therapies, aging impact, and precise regulations of associated genes.