The **ARHGAP30** gene encodes a member of the Rho GTPase-activating protein family, which plays a crucial role in the regulation of small GTPases like RAC1 and RHOA. Here's a detailed overview addressing your requests:

### 1. Associated Genes
ARHGAP30 has been linked to a variety of genes, particularly those involved in cellular signaling and cytoskeletal organization. Some notable associated genes include:
- **RAC1**: A member of the Rho family of GTPases, which is involved in the regulation of actin cytoskeleton organization.
- **RHOA**: Another GTPase that controls various cellular functions including proliferation, migration, and survival.
- **ARHGAP15**: Another Rho GTPase-activating protein that may function in a similar pathway.
- **CDC42**: While ARHGAP30 is not a GAP for CDC42, it may interact indirectly with pathways that also involve this GTPase.

### 2. Aging and Age-Related Diseases
Research specifically linking ARHGAP30 with aging or age-related diseases is limited. However, given its role in GTPase signaling pathways, it may be implicated in:
- **Cellular Senescence**: Alterations in Rho GTPase signaling can affect cellular senescence, a hallmark of aging.
- **Cancer**: Dysregulation of GTPase activity has been associated with various cancers, and alterations in ARHGAP30 could influence tumorigenesis.
- **Cardiovascular Disease**: Given that Rho GTPases are important in vascular biology, ARHGAP30 might be indirectly related to age-related vascular disorders.

### 3. Drug Interactions
As of my last knowledge update, specific drugs or drug classes that interact directly with ARHGAP30 have not been distinctly characterized. However, drugs targeting pathways involving:
- **Rho GTPases**: Such as Rho kinase inhibitors (e.g., Y-27632) may influence the signaling pathways regulated by ARHGAP30.
- **Anti-cancer agents**: Since GTPases are implicated in cancer, compounds that inhibit GTPase functions may have a downstream effect on ARHGAP30 activity.

### 4. Biological Pathways and Processes
ARHGAP30 is involved in several important biological processes and signaling pathways, including:
- **GTPase Mediated Signal Transduction**: Functions primarily to regulate signaling pathways by inactivating RAC1 and RHOA.
- **Actin Cytoskeleton Organization**: Plays a role in the regulation of actin dynamics by modulating GTPase activity.
- **Regulation of Cell Migration and Adhesion**: Implicated in processes that control how cells move and adhere to each other, essential for development and wound healing.
- **Pathways Involving Cell Proliferation and Survival**: Through its GTPase-activating functions, ARHGAP30 may be involved in cellular responses to growth factors.

In conclusion, ARHGAP30 is a significant player in GTPase signaling pathways that influence various biological processes, including cytoskeletal rearrangement and cellular signaling. Further research may illuminate its precise role in aging and age-related pathologies.