The **RN7SKP91** gene is a non-coding RNA gene that encodes a small nuclear RNA (snRNA) primarily involved in regulating RNA polymerase II transcription. It is part of the 7SK RNA family and is best known for its role as a component of the 7SK snRNP (small nuclear ribonucleoprotein), which functions to regulate the activity of positive transcription elongation factor b (P-TEFb).

### 1. Associated Genes
While specific associations may vary based on context, the RN7SKP91 gene has been associated with:
- **CDK9**: A component of P-TEFb that is recruited by 7SK RNA.
- **CCNT1 (Cyclin T1)**: The other key component of P-TEFb.
- **HEXIM1**: An inhibitor part of the P-TEFb complex which interacts with 7SK.
- **Various genes encoding members of the transcription machinery**: As the gene is involved in transcription regulation, multiple downstream target genes may indirectly relate to RN7SKP91.

### 2. Aging or Age-Related Diseases
Information specifically linking RN7SKP91 to aging or age-related diseases is limited. However, alterations in transcriptional regulation, where RN7SKP91 plays a role via P-TEFb, may influence cellular processes tied to aging and the development of some age-related diseases such as cancer and neurodegenerative disorders. Aberrant transcriptional regulation is often observed in senescent cells, which may suggest a potential link, albeit indirect.

### 3. Drug Interactions
As of the latest data, specific drug interactions for RN7SKP91 are not extensively documented. However:
- **Inhibitors of transcription**: Drugs that modulate transcriptional activity may indirectly impact RN7SKP91 function, given its regulatory role.
- **Anticancer agents**: Since P-TEFb is crucial in regulating oncogenes, drugs targeting CDK9 or related transcription factors may indirectly affect the function of RN7SKP91.

### 4. Pathways and Biological Processes
The RN7SKP91 gene is primarily involved in:
- **Transcriptional regulation**: It is crucial for the proper functioning of P-TEFb, which regulates the transition between transcription initiation and elongation.
- **RNA processing**: As a part of the snRNP, it is involved in splicing processes within the nucleus.
- **Regulation of gene expression**: Through its role in the P-TEFb complex, it influences the expression of various genes, especially those critical for cell growth and division.

Overall, RN7SKP91 plays essential roles in transcriptional regulation through its involvement in the P-TEFb complex and the broader context of gene expression regulation. Its specific implications in aging and disease processes warrant further research to clarify those associations.