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Beattie V, Boerckel W, Rigney M, O'Hagan K, Hennink M, Fox J. 209P_PR Understanding patient experience in Europe: The first global lung cancer coalition patient experience survey. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)02051-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nash S, Dietrich J, Ssemata AS, Herrera C, O'Hagan K, Else L, Chiodi F, Kelly C, Shattock R, Chirenje M, Lebina L, Khoo S, Bekker LG, Weiss HA, Gray C, Stranix-Chibanda L, Kaleebu P, Seeley J, Martinson N, Fox J. Combined HIV Adolescent Prevention Study (CHAPS): comparison of HIV pre-exposure prophylaxis regimens for adolescents in sub-Saharan Africa-study protocol for a mixed-methods study including a randomised controlled trial. Trials 2020; 21:900. [PMID: 33121503 PMCID: PMC7596950 DOI: 10.1186/s13063-020-04760-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 09/22/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND HIV remains a major public health issue, especially in Eastern and Southern Africa. Pre-exposure prophylaxis is highly effective when adhered to, but its effectiveness is limited by cost, user acceptability and uptake. The cost of a non-inferiority phase III trial is likely to be prohibitive, and thus, it is essential to select the best possible drug, dose and schedule in advance. The aim of this study, the Combined HIV Adolescent PrEP and Prevention Study (CHAPS), is to investigate the drug, dose and schedule of pre-exposure prophylaxis (PrEP) required for the protection against HIV and the acceptability of PrEP amongst young people in sub-Saharan Africa, and hence to inform the choice of intervention for future phase III PrEP studies and to improve strategies for PrEP implementation. METHODS We propose a mixed-methods study amongst young people aged 13-24 years. The first component consists of qualitative research to identify the barriers and motivators towards the uptake of PrEP amongst young people in South Africa, Uganda and Zimbabwe. The second component is a randomised clinical trial (ClinicalTrials.gov NCT03986970, June 2019) using a novel ex vivo HIV challenge method to investigate the optimal PrEP treatment (FTC-TDF vs FTC-TAF), dose and schedule. We will recruit 144 amongst HIV-negative uncircumcised men aged 13-24 years from voluntary male medical circumcision clinics in two sites (South Africa and Uganda) and randomise them into one of nine arms. One group will receive no PrEP prior to surgery; the other arms will receive either FTC-TDF or FTC-TAF, over 1 or 2 days, and with the final dose given either 6 or 20 h prior to surgery. We will conduct an ex vivo HIV challenge on their resected foreskin tissue. DISCUSSION This study will provide both qualitative and quantitative results to help decide the optimum drug, dose and schedule for a future phase III trial of PrEP. The study will also provide crucial information on successful strategies for providing PrEP to young people in sub-Saharan Africa. TRIAL REGISTRATION ClinicalTrials.gov NCT03986970 . Registered on 14 June 2019.
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Affiliation(s)
- S Nash
- London School of Hygiene and Tropical Medicine, London, UK
| | - J Dietrich
- University of the Witwatersrand Perinatal HIV Research Unit, Johannesburg, South Africa
| | - A S Ssemata
- MRC/UVRI Uganda Research Unit On Aids, Entebbe, Uganda
| | | | - K O'Hagan
- University of Cape Town, Cape Town, South Africa
| | - L Else
- University of Liverpool, Liverpool, UK
| | - F Chiodi
- Karolinska Institutet, Solna, Sweden
| | - C Kelly
- King's College London, London, UK
| | | | - M Chirenje
- University of Zimbabwe, Harare, Zimbabwe
| | - L Lebina
- University of the Witwatersrand Perinatal HIV Research Unit, Johannesburg, South Africa
| | - S Khoo
- University of Liverpool, Liverpool, UK
| | - L-G Bekker
- Desmond Tutu HIV Foundation, Cape Town, South Africa
| | - H A Weiss
- London School of Hygiene and Tropical Medicine, London, UK
| | - C Gray
- University of Cape Town, Cape Town, South Africa
| | | | - P Kaleebu
- MRC/UVRI Uganda Research Unit On Aids, Entebbe, Uganda
| | - J Seeley
- London School of Hygiene, London, UK
| | - N Martinson
- University of the Witwatersrand Perinatal HIV Research Unit, Johannesburg, South Africa
| | - J Fox
- King's College London, London, UK.
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del Rey M, O'Hagan K, Dellett M, Aibar S, Colyer HAA, Alonso ME, Díez-Campelo M, Armstrong RN, Sharpe DJ, Gutiérrez NC, García JL, De Las Rivas J, Mills KI, Hernández-Rivas JM. Genome-wide profiling of methylation identifies novel targets with aberrant hypermethylation and reduced expression in low-risk myelodysplastic syndromes. Leukemia 2012; 27:610-8. [PMID: 22936014 DOI: 10.1038/leu.2012.253] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gene expression profiling signatures may be used to classify the subtypes of Myelodysplastic syndrome (MDS) patients. However, there are few reports on the global methylation status in MDS. The integration of genome-wide epigenetic regulatory marks with gene expression levels would provide additional information regarding the biological differences between MDS and healthy controls. Gene expression and methylation status were measured using high-density microarrays. A total of 552 differentially methylated CpG loci were identified as being present in low-risk MDS; hypermethylated genes were more frequent than hypomethylated genes. In addition, mRNA expression profiling identified 1005 genes that significantly differed between low-risk MDS and the control group. Integrative analysis of the epigenetic and expression profiles revealed that 66.7% of the hypermethylated genes were underexpressed in low-risk MDS cases. Gene network analysis revealed molecular mechanisms associated with the low-risk MDS group, including altered apoptosis pathways. The two key apoptotic genes BCL2 and ETS1 were identified as silenced genes. In addition, the immune response and micro RNA biogenesis were affected by the hypermethylation and underexpression of IL27RA and DICER1. Our integrative analysis revealed that aberrant epigenetic regulation is a hallmark of low-risk MDS patients and could have a central role in these diseases.
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Affiliation(s)
- M del Rey
- Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca, Spain
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del Rev M, O'Hagan K, Lumbreras E, Aibar S, Dellett M, Diez-Campelo M, de las Rivas J, Mills K, Hernández J. 235 An integrative analysis of methylation and gene expression profiling in low-risk myelodysplastic syndromes (MDS). Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70237-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pack DA, O'Connor K, O'Hagan K. Cholangiocarcinoma: a nursing perspective. Clin J Oncol Nurs 2001; 5:141-6. [PMID: 12690613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Primary cancer of the bile duct (cholangiocarcinoma [CC]) is a rare malignancy that presents many nursing challenges. This article focuses on disease presentation, treatment options, quality of life, and the nurse's unique role in caring for this patient population. Surgical resection is the only treatment modality that offers a potential cure and prolonged survival. In patients with unresectable disease, biliary bypass or nonoperative biliary drainage procedures can provide palliation. Other palliative treatment modalities include chemotherapy, radiation, and photodynamic therapy. The sudden onset, limited treatment options, and overall poor prognosis add to the challenge of caring for patients with CC.
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Affiliation(s)
- D A Pack
- Memorial Sloan-Kettering Cancer Center, Mailbox 549, 1275 York Avenue, New York, NY 10021, USA.
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Meager A, Parti S, Barwick S, Spragg J, O'Hagan K. Detection of hybridomas secreting monoclonal antibodies to human gamma interferon using a rapid screening technique and specificity of certain monoclonal antibodies to gamma interferon. J Interferon Res 1984; 4:619-25. [PMID: 6438252 DOI: 10.1089/jir.1984.4.619] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
An immunoprecipitation technique, which uses radiolabeled human gamma interferon (HuIFN-gamma) and a sheep anti-mouse F(ab')2 serum, is described for the rapid detection of mouse monoclonal antibodies to IFN-gamma in hybridoma culture supernatants. This technique which can be performed in 4 h detects both neutralizing and nonneutralizing antibodies to IFN-gamma. Certain monoclonal antibodies prepared against natural (glycosylated) IFN-gamma which neutralized the antiviral activity of natural IFN-gamma bound strongly to rDNA (unglycosylated) IFN-gamma derived from E. coli, but failed to neutralize its antiviral activity.
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