Let’s review the article for information relevant to pathway enrichment analysis. Here are the answers to the questions based on the provided article:

1. **What tool was used for pathway enrichment analysis?**
   - Not described

2. **Was a tool version number provided?**
   - Not described

3. **What gene set library was queried (eg: GO, KEGG, Reactome or other)?**
   - KEGG

4. **Was a background gene list defined for pathway enrichment analysis?**
   - Not described

5. **What statistical test was used for enrichment analysis?**
   - Not described

6. **Was false discovery rate correction used to control the number of false positives in the pathway enrichment analysis?**
   - Not described