12 results on '"Melo Alvim C"'
Search Results
2. Enzalutamide in metastatic castration resistant prostate cancer, a single center experience
- Author
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Paiva, R., primary, Pacheco, T.R., additional, Melo Alvim, C., additional, Brás, R., additional, Mansinho, A., additional, Fernandes, I., additional, Macedo, D., additional, and Costa, L., additional
- Published
- 2018
- Full Text
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3. P055 - Enzalutamide in metastatic castration resistant prostate cancer, a single center experience
- Author
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Paiva, R., Pacheco, T.R., Melo Alvim, C., Brás, R., Mansinho, A., Fernandes, I., Macedo, D., and Costa, L.
- Published
- 2018
- Full Text
- View/download PDF
4. Efficacy of cisplatin-gemcitabine-durvalumab in patients with advanced biliary tract cancer experiencing early vs late disease relapse after surgery: a large real-life worldwide population.
- Author
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Lo Prinzi F, Salani F, Rimini M, Rizzato MD, Antonuzzo L, Camera S, Satake T, Vandeputte H, Vivaldi C, Pressiani T, Lucchetti J, Kim JW, Abidoye O, Rapposelli IG, Tamberi S, Finkelmeier F, Giordano G, Pircher C, Chon HJ, Braconi C, Pastorino A, Castet F, Tamburini E, Yoo C, Parisi A, Diana A, Scartozzi M, Prager GW, Avallone A, Schirripa M, Kim IH, Perkhofer L, Oneda E, Verrico M, Adeva J, Chan SL, Spinelli GP, Personeni N, Garajova I, Rodriquenz MG, Leo S, Melo Alvim C, Roque R, Fornaro L, De Rosa A, Lavacchi D, Rossari F, Ikeda M, Dekervel J, Niger M, Balsano R, Tonini G, Kang M, Bekaii-Saab T, Viola MG, Silvestro L, Esposito L, Boccaccino A, Himmelsbach V, Landriscina M, Ahcene Djaballah S, Zanuso V, Masi G, Lonardi S, Rimassa L, and Casadei-Gardini A
- Abstract
Background: In the TOPAZ-1, patients with biliary tract cancers (BTC) and recurrence within 6 months after surgery were excluded, even if this event is frequently observed in clinical practice. Our study aimed to assess if the efficacy of cisplatin-gemcitabine-durvalumab (CGD) in this population is comparable to that reported in the phase 3 trial., Methods: The study cohort included patients with BTC who underwent surgery on the primary tumor, experienced disease recurrence occurring ≤6 months or >6 months after surgery or after the end of adjuvant therapy and started CGD. The primary objectives were overall survival (OS) and progression free survival (PFS)., Results: A total of 178 patients were enrolled. No significant differences were observed between early and late relapse groups in OS (23.4 months vs not reached; HR 1.26; 95% CI, 0.67-2.37; P = .45) and PFS [7.0 months vs 9.8 months; HR 1.3(95% CI, 0.9-2.1) P = .13]. Overall response rate and disease control rate (P = .33 and P = .62) were comparable between the 2 groups, as the overall safety profile. In addition, we compared survival outcomes between the selected population and a historical cohort of patients with BTC treated with cisplatin-gemcitabine (CG) and found that despite the absence of statistical significance, CGD showed an outcome trend compared with CG regardless of the time of recurrence after surgery or adjuvant chemotherapy [(CG ≤ 6 vs CGD ≤ 6 months: HR 0.59, 95%CI, 0.35-1.01, P = .05; HR 0.70; 95%CI, 0.46-1.06, P = .09, OS and PFS, respectively) and (CG > 6 vs. CGD > 6 months: HR 0.50; 95%CI, 0.29-0.88, P = 0.0165; HR 0.54; 95%CI, 0.35-0.84, P = .0068, OS and PFS, respectively)]., Conclusion: Our analysis suggests that CGD retains its efficacy independently of the timing of relapse after surgery or completion of adjuvant treatment in patients with advanced BTC., (© The Author(s) 2024. Published by Oxford University Press.)
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- 2024
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5. Targeting Inhibitor of Apoptosis Proteins to Overcome Chemotherapy Resistance-A Marriage between Targeted Therapy and Cytotoxic Chemotherapy.
- Author
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Barroso T, Melo-Alvim C, Ribeiro LA, Casimiro S, and Costa L
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- Humans, Precision Medicine, Apoptosis, Inhibitor of Apoptosis Proteins, Neoplasms drug therapy, Radiation Oncology
- Abstract
Precision oncology is the ultimate goal of cancer treatment, i.e., to treat cancer and only cancer, leaving all the remaining cells and tissues as intact as possible. Classical chemotherapy and radiotherapy, however, are still effective in many patients with cancer by effectively inducing apoptosis of cancer cells. Cancer cells might resist apoptosis via the anti-apoptotic effects of the inhibitor of apoptosis proteins. Recently, the inhibitors of those proteins have been developed with the goal of enhancing the cytotoxic effects of chemotherapy and radiotherapy, and one of them, xevinapant, has already demonstrated effectiveness in a phase II clinical trial. This class of drugs represents an example of synergism between classical cytotoxic chemo- and radiotherapy and new targeted therapy.
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- 2023
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6. Breast Sarcomas, Phyllodes Tumors, and Desmoid Tumors: Turning the Magnifying Glass on Rare and Aggressive Entities.
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Esperança-Martins M, Melo-Alvim C, Dâmaso S, Lopes-Brás R, Peniche T, Nogueira-Costa G, Abreu C, Luna Pais H, de Sousa RT, Torres S, Gallego-Paez LM, Martins M, Ribeiro L, and Costa L
- Abstract
Breast sarcomas (BSs), phyllodes tumors (PTs), and desmoid tumors (DTs) are rare entities that arise from connective tissue. BSs can be classified as either primary or secondary, whether they develop de novo or after radiation exposure or lymphedema. PIK3CA seems to play an important common role in different BS. Malignant PTs show similar behavior to BSs, while DTs are locally aggressive but rarely metastasize. BSs usually present as unilateral, painless, rapidly growing masses with rare nodal involvement. The diagnosis should be based on magnetic resonance imaging and a core needle biopsy. Staging should comprise a chest computed tomography (CT) scan (except for benign PT and DT), while abdominal and pelvic CT scans and bone scans should be added in certain subtypes. The mainstay of treatment for localized BS is surgery, with margin goals that vary according to subtype. Radiotherapy and chemotherapy can be used as neoadjuvant or adjuvant approaches, but their use in these settings is not standard. Advanced BS should be treated with systemic therapy, consistent with recommendations for advanced soft tissue sarcomas of other topographies. Given the rarity and heterogeneity of these entities, multidisciplinary and multi-institutional collaboration and treatment at reference centers are critical.
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- 2023
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7. Radiotherapy, Chemotherapy and Immunotherapy-Current Practice and Future Perspectives for Recurrent/Metastatic Oral Cavity Squamous Cell Carcinoma.
- Author
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Melo-Alvim C, Neves ME, Santos JL, Abrunhosa-Branquinho AN, Barroso T, Costa L, and Ribeiro L
- Abstract
Oral squamous cell carcinoma is the most common malignant epithelial neoplasm affecting the oral cavity. While surgical resection is the cornerstone of a multimodal curative approach, some tumors are deemed recurrent or metastatic (R/M) and often not suitable for curative surgery. This mainly occurs due to the extent of lesions or when surgery is expected to result in poor functional outcomes. Amongst the main non-surgical therapeutic options for oral squamous cell carcinoma are radiotherapy, chemotherapy, molecular targeted agents, and immunotherapy. Depending on the disease setting, these therapeutic approaches can be used isolated or in combination, with distinct efficacy and side effects. All these factors must be considered for treatment decisions within a multidisciplinary approach. The present article reviews the evidence regarding the treatment of patients with R/M oral squamous cell carcinoma. The main goal is to provide an overview of available treatment options and address future therapeutic perspectives.
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- 2022
- Full Text
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8. Genomic Profiling of Sarcomas: A Promising Weapon in the Therapeutic Arsenal.
- Author
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Lopes-Brás R, Lopez-Presa D, Esperança-Martins M, Melo-Alvim C, Gallego L, Costa L, and Fernandes I
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- Humans, Retrospective Studies, Genetic Profile, Genomics, Soft Tissue Neoplasms, Sarcoma drug therapy, Sarcoma genetics
- Abstract
Sarcomas are rare malignant mesenchymal neoplasms, and the knowledge of tumor biology and genomics is scarce. Chemotherapy is the standard of care in advanced disease, with poor outcomes. Identifying actionable genomic alterations may offer effective salvage therapeutic options when previous lines have failed. Here, we report a retrospective cohort study of sarcoma patients followed at our center and submitted to comprehensive genomic profiling between January 2020 and June 2021. Thirty patients were included, most (96.7%) with reportable genomic alterations. The most common alterations were linked to cell cycle regulation ( TP53 , CDKN2A/B , and RB1 deletions and CDK4 , MDM2 , and MYC amplifications). Most patients (96.7%) had microsatellite stability and low tumor mutational burden (≤10 muts/megabase (Mb); median 2 Muts/Mb). Two-thirds of patients had actionable mutations for targeted treatments, including five cases with alterations amenable to targeted therapies with clinical benefit within the patient's tumor type, ten cases with targetable alterations with clinical benefit in other tumor types, and five cases with alterations amenable to targeting with drugs under investigation in a clinical trial setting. A significant proportion of cases in this study had actionable genomic alterations with available targeted drugs. Next-generation sequencing is a feasible option for identifying molecular drivers that can provide therapeutic options for individual patients. Molecular Tumor Boards should be implemented in the clinical practice to discuss genomic findings and inform clinically relevant targeted therapies.
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- 2022
- Full Text
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9. Management of Unresectable Localized Pelvic Bone Sarcomas: Current Practice and Future Perspectives.
- Author
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Soares do Brito J, Esperança-Martins M, Abrunhosa-Branquinho A, Melo-Alvim C, Lopes-Brás R, Janeiro J, Lopez-Presa D, Fernandes I, Portela J, and Costa L
- Abstract
Bone sarcomas (BS) are rare mesenchymal tumors usually located in the extremities and pelvis. While surgical resection is the cornerstone of curative treatment, some locally advanced tumors are deemed unresectable and hence not suitable for curative intent. This is often true for pelvic sarcoma due to anatomic complexity and proximity to vital structures, making treatment options for these tumors generally limited and not unanimous, with decisions being made on an individual basis after multidisciplinary discussion. Several studies have been published in recent years focusing on innovative treatment options for patients with locally advanced sarcoma not amenable to local surgery. The present article reviews the evidence regarding the treatment of patients with locally advanced and unresectable pelvic BS, with the goal of providing an overview of treatment options for the main BS histologic subtypes involving this anatomic area and exploring future therapeutic perspectives. The management of unresectable localized pelvic BS represents a major challenge and is hampered by the lack of comprehensive and standardized guidelines. As such, the optimal treatment needs to be individually tailored, weighing a panoply of patient- and tumor-related factors. Despite the bright prospects raised by novel therapeutic approaches, the role of each treatment option in the therapeutic armamentarium of these patients requires solid clinical evidence before becoming fully established.
- Published
- 2022
- Full Text
- View/download PDF
10. Osteosarcoma Pathogenesis Leads the Way to New Target Treatments.
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Fernandes I, Melo-Alvim C, Lopes-Brás R, Esperança-Martins M, and Costa L
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- Antineoplastic Agents, Immunological therapeutic use, Bone Neoplasms metabolism, Humans, Osteosarcoma metabolism, Prognosis, Receptor, ErbB-2 antagonists & inhibitors, Receptor, ErbB-2 metabolism, Receptor, IGF Type 1 metabolism, Trastuzumab therapeutic use, Antibodies, Monoclonal therapeutic use, Bone Neoplasms drug therapy, Molecular Targeted Therapy methods, Osteosarcoma drug therapy, Receptor, IGF Type 1 antagonists & inhibitors
- Abstract
Osteosarcoma (OS) is a rare condition with very poor prognosis in a metastatic setting. Basic research has enabled a better understanding of OS pathogenesis and the discovery of new potential therapeutic targets. Phase I and II clinical trials are already ongoing, with some promising results for these patients. This article reviews OS pathogenesis and new potential therapeutic targets.
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- 2021
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11. Pretreatment hemoglobin level as a prognostic factor in patients with locally advanced head and neck squamous cell carcinoma.
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Melo-Alvim C, Miguel-Semedo P, Paiva RS, Lobo-Martins S, Luna-Pais H, Costa AL, Santos AR, Florindo A, Vasconcelos AL, Abrunhosa-Branquinho AN, Palmela P, Fernandes L, Presa DL, Costa L, and Ribeiro L
- Abstract
Aim: Evaluate pretreatment hemoglobin values as a prognostic factor in patients with locally advanced head and neck squamous cell carcinoma treated with concurrent chemoradiotherapy., Background: Anemia is one of the most prevalent laboratory abnormalities in oncological disease. It leads to a decrease in cellular oxygen supply, altering radiosensitivity of tumor cells and compromising therapeutic outcomes., Materials and Methods: Retrospective evaluation of patients with HNSCC treated with cCRT. Primary and secondary endpoint was to evaluate the correlation of Hb levels (≥12.5 g/dL or <12.5 g/dL) at the beginning of cCRT with overall survival (OS) and progression-free survival (PFS), respectively., Results: A total of 108 patients were identified. With a median follow-up of 16.10 months median OS was 59.70 months for Hb ≥12.5 g/dL vs. 14.13 months for Hb <12.5 g/dL ( p = 0.004). PFS was 12.29 months for Hb ≥12.5 g/dL and 1.68 months for Hb <12.5 g/dL ( p = 0.016)., Conclusions: In this analysis, Hb ≥12.5 g/dL correlated with significantly better OS and PFS. Further studies are needed to validate these findings., (© 2020 Greater Poland Cancer Centre. Published by Elsevier B.V. All rights reserved.)
- Published
- 2020
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12. HER family in cancer progression: From discovery to 2020 and beyond.
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Kumar R, George B, Campbell MR, Verma N, Paul AM, Melo-Alvim C, Ribeiro L, Pillai MR, da Costa LM, and Moasser MM
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- Animals, Disease Progression, Drug Resistance, Neoplasm, Humans, Molecular Targeted Therapy, Mutation, Neoplasms genetics, Neoplasms pathology, Protein Kinase Inhibitors pharmacology, Signal Transduction, ErbB Receptors antagonists & inhibitors, ErbB Receptors genetics, Neoplasms drug therapy, Neoplasms enzymology, Protein Kinase Inhibitors therapeutic use
- Abstract
The human epidermal growth factor receptor (HER) family of receptor tyrosine kinases (RTKs) are among the first layer of molecules that receive, interpret, and transduce signals leading to distinct cancer cell phenotypes. Since the discovery of the tooth-lid factor-later characterized as the epidermal growth factor (EGF)-and its high-affinity binding EGF receptor, HER kinases have emerged as one of the commonly upregulated or hyperactivated or mutated kinases in epithelial tumors, thus allowing HER1-3 family members to regulate several hallmarks of cancer development and progression. Each member of the HER family exhibits shared and unique structural features to engage multiple receptor activation modes, leading to a range of overlapping and distinct phenotypes. EGFR, the founding HER family member, provided the roadmap for the development of the cell surface RTK-directed targeted cancer therapy by serving as a prototype/precursor for the currently used HER-directed cancer drugs. We herein provide a brief account of the discoveries, defining moments, and historical context of the HER family and guidepost advances in basic, translational, and clinical research that solidified a prominent position of the HER family in cancer research and treatment. We also discuss the significance of HER3 pseudokinase in cancer biology; its unique structural features that drive transregulation among HER1-3, leading to a superior proximal signaling response; and potential role of HER3 as a shared effector of acquired therapeutic resistance against diverse oncology drugs. Finally, we also narrate some of the current drawbacks of HER-directed therapies and provide insights into postulated advances in HER biology with extensive implications of these therapies in cancer research and treatment., (© 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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