As shown in Figure 7B, we proceeded to conduct a clustering analysis on these co-occurring keywords, resulting in their categorization into eight distinct clusters: Cluster 1 (bone metastases), Cluster 2 (zoledronic acid), Cluster 3 (bone metastasis), Cluster 4 (system), Cluster 5 (anaplastic lymphoma kinase), Cluster 6 (tyrosine kinase inhibitor), Cluster 7 (bone scintigraphy), and Cluster 8 (lung adenocarcinoma). The gene discussed is ALK; the disease is bone metastasis.