The LINC01644 gene is classified as a long intergenic non-coding RNA (lncRNA) and is part of the vast class of non-coding RNAs known for their regulatory roles in gene expression and cellular processes. Here’s a detailed overview of the LINC01644 gene, along with your specific queries:

### Basic Information
- **Gene Symbol**: LINC01644
- **Genomic Location**: Located on chromosome 5 (specific coordinates may vary depending on the genome assembly used).

### 1. Associated Genes
LINC01644 has been associated with various other genes, some of which may include:
- **SERPINA1**: This gene encodes a member of the serine protease inhibitor family and has been linked to various inflammatory diseases.
- **HLA-DRB1**: Part of the major histocompatibility complex, this gene plays a crucial role in the immune response.
- **LINC01644** may also show co-expression with genes involved in immune response and cellular stress pathways, though specific associations can vary based on tissue types and conditions.

### 2. Roles in Aging and Age-Related Diseases
Non-coding RNAs like LINC01644 have been implicated in various age-related processes and diseases, such as:
- **Cellular Senescence**: LINC01644 may play a role in modulating cellular senescence pathways.
- **Cancer**: Alterations in the expression levels of lncRNAs, including LINC01644, have been linked to tumorigenesis, progression, and metastasis of various cancers.
- **Neurodegenerative Diseases**: Some studies suggest that lncRNAs might influence neurological health and are connected to conditions like Alzheimer's disease.

### 3. Drug Interactions
Currently, there is limited information on direct drug interactions specifically with LINC01644, as lncRNAs are not typically drug targets. However, drugs that modulate pathways associated with its nearby gene interactions or modify lncRNA expression could indirectly influence the function of this gene. The following classes of drugs could have potential relevance:
- **Antineoplastic Agents**: Given the association with cancer, drugs used in cancer therapy might interact with the regulatory pathways involving LINC01644.
- **Anti-inflammatory Drugs**: These could potentially modulate the pathways in which LINC01644 is involved, especially in age-related inflammatory responses.

### 4. Pathways and Biological Processes
LINC01644 is known to be involved in several critical biological processes and pathways:
- **Gene Regulation**: It may play a role in the regulation of neighboring protein-coding genes, either enhancing or inhibiting their expression.
- **Immune System Process**: Being associated with genes like HLA-DRB1, LINC01644 may impact immune responses.
- **Cell Cycle Regulation**: It could also be involved in pathways regulating cell proliferation and survival, particularly concerning its roles in cancer.
- **Apoptosis**: There may be implications in apoptosis, particularly under stress conditions where lncRNAs often modulate apoptotic pathways.

### Conclusion
Overall, the LINC01644 gene is a significant component of the non-coding RNA landscape, potentially influencing various biological pathways and processes. Its relationships with aging, cancer, and immune functions highlight its relevance in health and disease. Further research is necessary to elucidate its precise mechanisms and practical implications in therapeutic areas.