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Alternative Cancer Therapeutics: Unpatentable Compounds and Their Potential in Oncology. Pharmaceutics 2024, 16, 1237. [https://doi.org/10.3390/](https://doi.org/10.3390/)[ ](https://doi.org/10.3390/)pharmaceutics16091237  \nAcademic Editors: Tihomir Tomašiˇcand Francesca Musumeci  \nReceived: 28 August 2024  \nRevised: 12 September 2024  \nAccepted: 18 September 2024  \nPublished: 23 September 2024  \nCopyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ([https://](https://)[ ](https://)[creativecommons.org/licenses/by/](creativecommons.org/licenses/by/)[ ](creativecommons.org/licenses/by/)[4.0/](4.0/)) .  \nAltogen Labs, 11200 Menchaca Road, Austin, TX 78748, USA  \n* Correspondence: [ovcharenko@altogen.com](ovcharenko@altogen.com)  \nAbstract: Cancer remains a leading cause of death globally. Cancer patients often seek alternative therapies in addition to, or instead of, conventional treatments like chemotherapy, radiation, and surgery. The progress in medical advancements and early detection provides more treatment options; however, the development of cancer drugs requires a significant amount of time, demands substantial investments, and results in an overall low percent of regulatory approval. The complex relationship between patent protection and pharmaceutical innovation complicates cancer drug development and contributes to high mortality rates. Adjusting patent criteria for alternative cancer therapeutics could stimulate innovation, enhance treatment options, and ultimately improve outcomes for cancer patients. This article explores the potential of alternative cancer therapeutics, chemopreventive agents, natural products, off-patent drugs, generic unpatentable chemicals, and repurposed drugs in cancer treatment, emphasizing the mechanisms and therapeutic potential of these unconventional compounds as combinatorial cancer therapies. The biological pathways, therapeutic effects, and potential to enhance existing therapies are reviewed, demonstrating their cost-effective and accessible options as adjuvant cancer therapies.  \nKeywords: cancer; alternative therapeutics; off-label drugs; regulatory challenges; natural remedies; combination cancer therapy  \n1. Introduction  \nThis study aims to highlight the potential of alternative cancer therapies by examining their biological mechanisms, therapeutic effects, and abilities to enhance existing treatments. While numerous alternative therapies have been documented, their efficacy and safety often remain unverified due to limited published research. Expanding preclinical studies on these compounds is crucial for broadening access to safe cancer therapies and advancing oncological research. The importance of existing alternative cancer therapies is emphasized, alongside the value of collaborative models, including international partnerships and AI-driven drug discovery. Such collaborations are essential for addressing funding gapsand accelerating the development of unconventional therapies. Overcoming regulatory and financial challenges is critical to uncovering cost-effective and accessible cancer treatments that complement existing therapies and improve patient outcomes.  \nThe cancer drug discovery and development process in the United States is regulated by the U.S. Food and Drug Administration (US FDA) and typically takes about 12–14 years (Figure 1) . It begins with discovery and preclinical testing to identify and assess potential drug targets. An Investigational New Drug (IND) application must be approved by the US FDA before clinical trials can commence. Clinical trials occur in three phases: Phase I (safet","cbCaitmOVh78Qkyf","https://ap.wps.com/l/cbCaitmOVh78Qkyf","pdf",1641413,28,"English","# Introduction\n## Drug discovery and development process\n## Patent protection, IP framework, and non-patentable compounds\n## Alternative cancer therapeutics and reviewed mechanisms","[{\"question\":\"Why do alternative cancer therapies attract patients despite limited verification?\",\"answer\":\"Cancer patients often seek alternatives in addition to or instead of conventional treatments. Many alternative options have efficacy and safety that remain unverified due to limited published research.\"},{\"question\":\"How does the patent system affect cancer drug development?\",\"answer\":\"The relationship between patent protection and pharmaceutical innovation complicates development. Non-patentability of many public-domain compounds can limit incentives and make translation of research into patient benefits more difficult.\"},{\"question\":\"Which types of alternative therapeutics are covered in this review?\",\"answer\":\"The review examines alternative cancer therapeutics such as chemopreventive agents, natural products, off-patent drugs, generic unpatentable chemicals, and repurposed drugs, emphasizing their mechanisms and therapeutic potential.\"}]","Alternative Cancer Therapeutics: Unpatentable Compounds and Their Potential in Oncology | PDF",1790022585,71]