Cancer biology
Per-disease synthesis: every hypothesis, gap, debate, and mission bound to Cancer biology in the substrate.
What we know
- 0 active hypothesises in scope
- 8 open frontiers with evidence gaps
- 10 indexed papers in corpus
Top hypotheses
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Open frontiers
All gaps →The abstract shows IDH2 gain-of-function induces reductive glutamine metabolism that stabilizes HIF-1α, but the specific molecular mechanism linking these processes is not explained. Understanding this pathway is critical for developing targeted therapies that disrupt this stabilization. Gap type: unexplained_observation Source paper: IDH2 stabilizes HIF-1α-induced metabolic reprogramming and promotes chemoresistance in urothelial cancer. (2023, EMBO J, PMID:36637036)
Why does panobinostat improve progression-free survival but not overall response rates in multiple myeloma?The study shows significant PFS improvement (11.99 vs 8.08 months) but no difference in overall response rates (60.7% vs 54.6%). This disconnect between disease control and response metrics suggests unknown mechanisms of panobinostat action that need clarification for optimal patient selection. Gap type: unexplained_observation Source paper: Panobinostat plus bortezomib and dexamethasone versus placebo plus bortezomib and dexamethasone in patients with relapsed or relapsed and refractory multiple myeloma: a multicentre, randomised, double-blind phase 3 trial. (2014, The Lancet. Oncology, PMID:25242045)
What mechanisms drive the selective increase in complete/near-complete responses with panobinostat?Panobinostat significantly increased complete/near-complete responses (27.6% vs 15.7%) while overall response rates were similar. The biological basis for this quality-of-response improvement is unclear but critical for understanding optimal combination strategies. Gap type: unexplained_observation Source paper: Panobinostat plus bortezomib and dexamethasone versus placebo plus bortezomib and dexamethasone in patients with relapsed or relapsed and refractory multiple myeloma: a multicentre, randomised, double-blind phase 3 trial. (2014, The Lancet. Oncology, PMID:25242045)
What determines whether IDH2-mediated metabolic reprogramming confers cross-resistance to other chemotherapeutics beyond CDDP?The study demonstrates cross-resistance to CDDP through antioxidant defense mechanisms, but it's unclear if this extends to other chemotherapy classes or what factors determine resistance breadth. This knowledge gap limits understanding of treatment sequence strategies in resistant urothelial carcinoma. Gap type: open_question Source paper: IDH2 stabilizes HIF-1α-induced metabolic reprogramming and promotes chemoresistance in urothelial cancer. (2023, EMBO J, PMID:36637036)
How do TIGAR, TKT, and CTPS1 expression changes mechanistically link to poor prognosis in IDH2-driven resistance?While the abstract notes these metabolic enzymes are affected by IDH2 reprogramming and correlate with poor prognosis, the causal relationship between their expression changes and clinical outcomes remains unexplained. This gap hinders development of prognostic biomarkers and therapeutic targets. Gap type: unexplained_observation Source paper: IDH2 stabilizes HIF-1α-induced metabolic reprogramming and promotes chemoresistance in urothelial cancer. (2023, EMBO J, PMID:36637036)
What molecular mechanisms link perlecan/HSPG2 upregulation to radioresistance acquisition in prostate cancer?The study identifies perlecan/HSPG2 upregulation in radioresistant cells and shows knockdown sensitizes cells, but the mechanistic pathway connecting perlecan to radiation resistance remains unexplained. Understanding this mechanism is critical for developing targeted radiosensitization strategies. Gap type: unexplained_observation Source paper: The extracellular matrix component perlecan/HSPG2 regulates radioresistance in prostate cancer cells. (2024, Front Cell Dev Biol, PMID:39149513)
How do extensive matrix remodeling changes coordinate with adhesion signaling to drive radioresistance?The abstract reveals that radioresistance involves both extracellular matrix remodeling and changes in adhesion signaling proteins, but how these two processes are coordinated mechanistically is not explained. This coordination likely represents a key vulnerability for therapeutic targeting. Gap type: unexplained_observation Source paper: The extracellular matrix component perlecan/HSPG2 regulates radioresistance in prostate cancer cells. (2024, Front Cell Dev Biol, PMID:39149513)
What mechanisms explain how β-catenin mutations can be both oncogenic and tumor suppressive in cancer?The abstract reports both gain-of-function and loss-of-function CTNNB1 mutations are detected in human cancers, presenting a paradox. Understanding this dual role is critical for developing targeted therapies and predicting treatment responses in β-catenin-driven diseases. Gap type: contradiction Source paper: Multi‑layered prevention and treatment of chronic inflammation, organ fibrosis and cancer associated with canonical WNT/β‑catenin signaling activation (Review). (None, None, PMID:29786110)
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