*TITLE:* Molecular Insights into Cancer Pathogenesis and Innovations in Diagnosis and Therapy: A Critical Review

This review paper titled "Molecular Insights into Cancer Pathogenesis and Innovations in Diagnosis and Therapy: A Critical Review" by Hazrat Bilal (Department of Chemistry, Abdul Wali Khan University Mardan, Pakistan) provides a comprehensive overview of cancer biology. The paper discusses the molecular mechanisms of oncogenesis including oncogene activation, tumor suppressor gene loss (p53), apoptosis evasion, and angiogenesis. It highlights modern diagnostic tools such as liquid biopsy, ctDNA, PET-CT, and Next-Generation Sequencing (NGS) and evaluates therapeutic advances including chemotherapy, targeted therapy, immunotherapy (PD-1/PD-L1 inhibitors, CAR-T cell therapy), nanomedicine, and CRISPR-Cas9 gene editing. The review also addresses major challenges like drug resistance and tumor heterogeneity. This work is original, plagiarism-free, and intended for academic and educational purposes. *Keywords:* Cancer Biology, Oncology, Immunotherapy, Targeted Therapy, Nanomedicine, CAR-T, p53, Cancer Diagnosis *Author:* Hazrat Bilal *Email:* [email protected] *Affiliation:* Abdul Wali Khan University Mardan