The FAM86B2 gene, also known as "family with sequence similarity 86, member B2," is part of a family of genes that are implicated in various biological processes, particularly those related to methylation and protein interactions.

### 1. Associated Genes
FAM86B2 may interact or be associated with several other genes. Though specific associations can vary between studies, here are some genes that could be related based on gene expression patterns or interaction reports:
   - EEF2KMT: As noted in the summary, this gene encodes for a methyltransferase involved in the methylation of elongation factor 2.
   - Other FAM genes: The FAM86 family members, including FAM86A, FAM86B1, and others, may also have similar functions or be involved in related pathways.
   - Genes involved in chromatin remodeling, transcriptional regulation, and other methyltransferases are often studied in the context of FAM86B2 due to its predicted methyltransferase activity.

### 2. Aging and Age-Related Diseases
While specific studies directly associating FAM86B2 with aging or age-related diseases may be limited, methylation processes are generally known to play a crucial role in epigenetic regulation and cellular aging. Aberrant methylation patterns are often observed in tumors and other age-related diseases, so it is plausible that FAM86B2 might indirectly influence these conditions through its role in methylation. 

Research into methyltransferases and their roles in aging processes suggests that perturbations in methylation can affect cellular senescence, regenerative capacity, and the stability of the genome, potentially linking FAM86B2's activities to age-related health outcomes.

### 3. Drug Interactions
As of the latest information available up to October 2023, specific drugs or drug classes that directly target FAM86B2 for therapeutic purposes have not been clearly identified. However, given the role of methyltransferases in various biological processes, drugs that influence methylation (such as DNA methyltransferase inhibitors used in certain cancers) may conceptually interact with pathways involving FAM86B2. More specific targeted studies are needed to identify effective compounds.

### 4. Pathways and Biological Processes
FAM86B2 is predicted to play roles in the following pathways and biological processes:
- **Methylation:** The core activity predicted for FAM86B2 is related to methyltransferase activity, likely affecting protein function and gene expression through the addition of methyl groups to substrates.
- **Protein-Protein Interactions:** The interaction with EEF2KMT indicates participation in complexes that are crucial for regulating protein synthesis and modification.
- **Cell Cycle Regulation:** Methylation can influence cell cycle progression and cellular differentiation.
- **Developmental Processes:** Like many genes involved in the regulation of gene expression, it may have roles in developmental biology, though specific embryonic or developmental effects are less documented.

In summary, FAM86B2 is a gene of emerging interest, particularly concerning its role in methylation and potential links to biological processes related to aging and disease. Future research may clarify its contributions to health and pathology.