Expert opinion on biological therapy
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Mutations in the p53 gene are the most frequent genetic alterations in human tumours, occurring in approximately 50% of all cancers. The p53 protein is pivotal in maintaining genetic integrity after DNA damage, and alterations in the p53 pathway, including mutations in the p53 gene, greatly increase the probability of tumour formation. ⋯ Results show that Advexin is a well-tolerated and efficacious treatment for numerous cancers, both as monotherapy and in combination with radiation and/or chemotherapy agents. In addition, there is now data to support the use of Advexin in cancer immunotherapy.
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Expert Opin Biol Ther · Jan 2006
ReviewThe emerging role of recombinant activated Factor VII (rFVIIa) in the treatment of blunt traumatic haemorrhage.
Recombinant activated Factor VII (rFVIIa; eptacog alpha [activated], NovoSeven) is currently used for the management of a subgroup of haemophilia patients with inhibitors to Factors VIII or IX, and is under investigation as an adjuvant therapy for critical bleeding from other causes, including trauma. rFVIIa has a mode of action founded on physiological coagulation processes, and causes localised haemostasis at injury sites, both spontaneous and traumatic, with the capacity to correct the systemic coagulopathy associated with massive blood loss and its management. This review charts the development of rFVIIa as a new and potent adjuvant therapy for severe bleeding and coagulopathy caused by blunt trauma, where it is reported to produce rapid and significant haemostasis, reducing transfusion requirements and improving clinical outcome.
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Expert Opin Biol Ther · Dec 2005
ReviewTowards an improved serogroup B Neisseria meningitidis vaccine.
Meningococcal disease, presenting primarily as septicaemia and meningitis, continues to be a devastating problem around the world. Over the last century, vaccine development has been undertaken in earnest for the prevention of this disease. Polysaccharide vaccines have been available for almost 40 years, yet they are poorly immunogenic in young children who are at the highest risk. ⋯ This review details the many conventional vaccine strategies and the more recent genome-derived technological approaches being used in serogroup B vaccine development. The future prevention of serogroup B disease will rely on both outer membrane vesicle vaccines being used for serosubtype-specific outbreaks and new vaccines containing multiple other antigens. Investment by the pharmaceutical industry in preclinical research and development provides hope that an efficacious serogroup B meningococcal vaccine can be developed.
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The epidermal growth factor receptor (EGFR) plays an important role in the carcinogenesis of many human malignancies and is therefore an attractive target against which anticancer therapy may be effective. At present, there are two ways in which this may be achieved clinically: antibodies against EGFR and inhibitors of the EGFR tyrosine kinase. ⋯ Efficacy data for these agents in various human malignancies is presented. Various other agents that are in the early stages of development at present have also been mentioned.
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Paul Erhlich conceived of antibody-based immunotherapy in the nineteenth century. Rituximab, which is a chimeric monoclonal antibody produced by recombinant technology, became the first monoclonal antibody to be approved for haematological malignancies by the US Food and Drug Administration. ⋯ Radioimmunoconjugates are an attractive therapeutic option for lymphomas due to the inherent sensitivity to radiotherapy, the fact that the local emission of ionising radiation by radiolabelled antibodies may kill cells with or without the target antigen in close proximity to the bound antibody, and penetrating radiation may obviate the problem of limited antibody penetration into bulky, poorly vascularised tumours. This paper reviews rituximab, alemtuzumab and gemtuzumab ozogamicin as monoclonal antibody therapies for leukaemias and lymphomas.