12 results on '"Ozuah N"'
Search Results
2. 013 - CHILDHOOD AND ADOLESCENT HODGKIN REED-STERNBERG CELLS DEMONSTRATE UNIQUE GENE EXPRESSION SIGNATURE CONSISTENT WITH ONCOGENIC-INDUCED SENESCENCE
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Agrusa, J., Lin, H., Abhyankar, H., Velazquez, J., Fattah, E., Scull, B., Ozuah, N., Eckstein, O., El-Mallawany, N., Gulati, N., Lubega, J., Horton, T., Kamdar, K., McClain, K., Man, C., and Allen, C.
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- 2022
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3. Orbital T-cell lymphoblastic lymphoma in children: A case report and review of literature.
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Mzikamanda R, Chinthambi M, Tomoka T, Mbutuka H, McAtee CL, Dreyer Z, and Ozuah N
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- 2024
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4. Virtual Multidisciplinary Team Meetings: A Tool to Increase Radiology Access in Global Health Settings.
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Brown B, Pryor W, Nandi B, Mapurisa A, McAtee CL, Ozuah N, Mzumara S, and McGinty K
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- 2024
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5. Rapid gene fusion testing using the NanoString nCounter platform to improve pediatric leukemia diagnoses in Sub-Saharan Africa.
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Gastier-Foster JM, Lutwama F, Mbabazi O, Mlenga S, Ulaya K, Namazzi R, Hollingsworth EF, Lopez-Terrada D, Fisher KE, Roy A, Allen CE, Poplack DG, Mzikamanda R, Ozuah N, and Wasswa P
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Risk stratification and molecular targeting have been key to increasing cure rates for pediatric cancers in high-income countries. In contrast, precise diagnosis in low-resource settings is hindered by insufficient pathology infrastructure. The Global HOPE program aims to improve outcomes for pediatric cancer in Sub-Saharan Africa (SSA) by building local clinical care and diagnostic capacity. This study aimed to assess the feasibility of implementing molecular assays to improve leukemia diagnoses in SSA. Custom NanoString nCounter gene fusion assays, previously validated in the US, were used to test samples from suspected leukemia patients. The NanoString platform was chosen due to relatively low cost, minimal technical and bioinformatics expertise required, ability to test sub-optimal RNA, and rapid turnaround time. Fusion results were analyzed blindly, then compared to morphology and flow cytometry results. Of 117 leukemia samples, 74 were fusion-positive, 30 were negative, 7 were not interpretable, and 6 failed RNA quality. Nine additional samples were negative for leukemia by flow cytometry and negative for gene fusions. All 74 gene fusions aligned with the immunophenotype determined by flow cytometry. Fourteen samples had additional information available to further confirm the accuracy of the gene fusion results. The testing provided a more precise diagnosis in >60% of cases, and 9 cases were identified that could be treated with an available tyrosine kinase inhibitor, if detected at diagnosis. As risk-stratified and targeted therapies become more available in SSA, implementing this testing in real-time will enable the treatment of pediatric cancer to move toward incorporating risk stratification for optimized therapy., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Gastier-Foster, Lutwama, Mbabazi, Mlenga, Ulaya, Namazzi, Hollingsworth, Lopez-Terrada, Fisher, Roy, Allen, Poplack, Mzikamanda, Ozuah and Wasswa.)
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- 2024
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6. Addressing the childhood cancer crisis in sub-Saharan Africa.
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Lubega J, Chirande L, Atwine B, Davidson A, Kashaigili HJ, Kanyamuhunga A, Langat RK, Munube D, Mzikamanda R, Namazzi R, Nzamu I, Akullo A, Allen C, Gastier-Foster JM, Hockenberry M, Ozuah N, Wasswa P, Smith R, Wilson-Lewis K, and Poplack DG
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- Humans, Child, Africa South of the Sahara epidemiology, Neoplasms epidemiology, Neoplasms therapy
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Competing Interests: We declare no competing interests. We thank John Damonti and the Bristol Myers Squibb Foundation for their founding gift to Global HOPE.
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- 2023
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7. Outcomes of Wilms tumor therapy in Lilongwe, Malawi, 2016-2021: Successes and ongoing research priorities.
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Holmes DM, Matatiyo A, Mpasa A, Huibers MHW, Manda G, Tomoka T, Mulenga M, Namazzi R, Mehta P, Zobeck M, Mzikamanda R, Chintagumpala M, Allen C, Nuchtern JG, Borgstein E, Aronson DC, Ozuah N, Nandi B, and McAtee CL
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- Child, Humans, Infant, Retrospective Studies, Malawi epidemiology, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Combined Modality Therapy, Nephrectomy, Neoplasm Staging, Kidney Neoplasms pathology, Wilms Tumor pathology
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Introduction: Wilms tumor therapy in low- and middle-income countries (LMICs) relies on treatment protocols adapted to resource limitations, but these protocols have rarely been evaluated in real-world settings. Such evaluations are necessary to identify high-impact research priorities for clinical and implementation trials in LMICs. The purpose of this study was to identify highest priority targets for future clinical and implementation trials in sub-Saharan Africa by assessing outcomes of a resource-adapted treatment protocol in Malawi., Methods: We conducted a retrospective cohort study of children treated for Wilms tumor with an adapted SIOP-backbone protocol in Lilongwe, Malawi between 2016 and 2021. Survival analysis assessed variables associated with poor outcome with high potential for future research and intervention., Results: We identified 136 patients, most commonly with stage III (n = 35; 25.7%) or IV disease (n = 35; 25.7%). Two-year event-free survival (EFS) was 54% for stage I/II, 51% for stage III, and 13% for stage IV. A single patient with stage V disease survived to 1 year. Treatment abandonment occurred in 36 (26.5%) patients. Radiotherapy was indicated for 55 (40.4%), among whom three received it. Of these 55 patients, 2-year EFS was 31%. Of 14 patients with persistent metastatic pulmonary disease at the time of nephrectomy, none survived to 2 years. Notable variables independently associated with survival were severe acute malnutrition (hazard ratio [HR]: 1.9), increasing tumor stage (HR: 1.5), and vena cava involvement (HR: 3.1)., Conclusion: High-impact targets for clinical and implementation trials in low-resource settings include treatment abandonment, late presentation, and approaches optimized for healthcare systems with persistently unavailable radiotherapy., (© 2023 Wiley Periodicals LLC.)
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- 2023
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8. Health-related quality of life of patients with sickle cell disease aged 8-17 years at Kamuzu Central Hospital, Malawi.
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Wachepa S, Bvalani R, Namubiru T, Namugerwa S, Kaudha G, Mpasa A, Munube D, Rujumba J, Ozuah N, and Kiguli S
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- Adolescent, Child, Cross-Sectional Studies, Female, Hospitals, Humans, Malawi epidemiology, Male, Pain etiology, Anemia, Sickle Cell therapy, Quality of Life
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Background: Sickle cell disease (SCD) is characterized by both acute and chronic complications that affect the daily lives of patients and lower their quality of life., Objective: To describe the health-related quality of life (HRQoL) and the associated factors in children aged 8-17 years with SCD attending the pediatric hematology clinic at Kamuzu Central Hospital (KCH) in Lilongwe, Malawi., Methods: A mixed-methods cross-sectional study was conducted at KCH. Patient data were collected with the aid of a standardized case report form. HRQoL was assessed using PedsQL™ Sickle Cell Disease Module by the child's report. Associations between HRQoL scores and independent variables were evaluated by a linear regression model. In-depth interviews were then carried out and the qualitative data were analyzed using content thematic analysis., Results: A hundred and sixty-three children with SCD were enrolled and 52.1% were females. Their median age was 11.2 ± 2.7 years. The mean global HRQoL score of the children was 62 ± 17.3. The highest scores were in the treatment domain (72.5 ± 15.1) while the lowest scores were in the emotions domain (55.2 ± 28.7). The mean pain score was 58.8 ± 16.3. The factors associated with low HRQoL scores were pain (β-coefficient -6.97 CI (-3.07,-15.58); p value .034) and low hemoglobin levels (β-coefficient 2.29 CI (.65-3.91); p value .006)., Conclusion: The HRQoL of this population is low. Pain and low hemoglobin were significantly associated with low HRQoL scores. Adequate treatment to control pain and increase the steady-state hemoglobin may improve the HRQoL of children with SCD. Interventions to address low emotional scores are recommended., (© 2022 Wiley Periodicals LLC.)
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- 2022
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9. Spatial distribution of incident pediatric Burkitt lymphoma in central and northern Malawi and association with malaria prevalence.
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Gondwe Y, Salima A, Manda A, Ozuah N, Mapurisa G, Brandt K, Gopal S, Tomoka T, Fedoriw Y, and Westmoreland KD
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- Child, Humans, Malawi epidemiology, Prevalence, Burkitt Lymphoma complications, Burkitt Lymphoma epidemiology, Malaria epidemiology, Malaria, Falciparum complications, Malaria, Falciparum epidemiology
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Background: Burkitt lymphoma (BL) accounts for 90% of pediatric lymphomas in sub-Saharan Africa. Plasmodium falciparum malaria is considered an etiological factor of BL. We describe the geographic distribution of pediatric BL in Malawi and association with P. falciparum malaria prevalence rate (PfPR)., Methods: We enrolled 220 pathologically confirmed incident pediatric BL cases (2013-2018) into an observational clinical cohort at Kamuzu Central Hospital (KCH) in Lilongwe district. KCH is the main tertiary cancer referral center serving the central and northern regions of Malawi. Using an ecological study design, we calculated district-level annual BL incidence rate using census population estimates. District-level PfPR was extracted from the National Malaria Control Program 2010 report. BL incidence and PfPR maps were constructed in QGIS. Moran's I test was used to identify BL spatial clusters. Pearson's correlation and multiple linear regression analyses were used to statistically examine the relationship between PfPR and BL., Results: BL incidence was higher in central region districts (8.2 cases per million) than northern districts (2.9 cases per million) and was elevated in lakeshore districts. Districts with elevated PfPR tended to have elevated BL incidence. A low-risk BL cluster was detected in the north. Statistically, BL incidence was positively correlated with PfPR (r = .77, p < .01). A 1% increase in PfPR predicted an increase in BL incidence of 0.2 cases per million (p = .03), when controlling for travel time from referral district hospital to KCH., Conclusion: Our study supports evidence for an association between P. falciparum and BL and highlights a need to improve geographic accessibility to tertiary cancer services in Malawi's northern region., (© 2022 Wiley Periodicals LLC.)
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- 2022
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10. Palliative Care Services within a Pediatric Hematology-Oncology Program in a Low-Resource Setting.
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Silverstein A, Butia M, Bank R, Manda G, Nyasulu C, Mwango N, Makuti S, Chikasema M, Torrey S, Hesselgrave J, Casas J, Thambo L, Msekandiana A, Chiume M, Ozuah N, and Huibers MH
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- Child, Female, Humans, Male, Medical Oncology, Palliative Care, Hematology, Hospice and Palliative Care Nursing, Neoplasms therapy, Terminal Care
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Context: Outcomes for children with cancer in sub-Saharan Africa (SAA) are dismal due to delayed diagnosis and limited access to curative therapy. When establishing a pediatric hematology-oncology (PHO) program in low-resource settings, early integration of palliative care services becomes essential. While palliative care is a human right, equitable distribution is lacking., Objectives: We aim to describe our experience establishing a palliative care program, the services offered, and the distribution of patients served., Methods: This is a brief description of our PHO palliative care program in Lilongwe, Malawi at a tertiary care center and a three-year retrospective review of activities (2017-2020). Services offered include inpatient, outpatient, home visits, end of life care, and strengthening of referral systems., Results: Over the three-year period, 315 patients were enrolled. 57% (n=179) were male. The median age was seven years (5 months-22 years). Patients served were from 17 of 28 districts within Malawi. Diagnoses of patients included 43% solid tumors (n=135), 22% lymphoma (n=68), 15% leukemia (n=47), and 21% hematologic disease (n=65). 40% of patients have died (n=125), with 53% of deaths occurring at home (n=66), 22% in the hospital (n=28), and 25% at unknown locations (n=31)., Conclusion: Palliative care is a critical component of PHO programs worldwide. Programs must leverage existing networks to ensure optimal care to children and families. We demonstrate the feasibility of integrating palliative care services within a PHO program in a low-resource setting, which could serve as a model for other countries in SSA., (Copyright © 2022 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.)
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- 2022
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11. Pediatric lymphoma patients in Malawi present with poor health-related quality of life at diagnosis and improve throughout treatment and follow-up across all Pediatric PROMIS-25 domains.
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Ellis GK, Chapman H, Manda A, Salima A, Itimu S, Banda G, Seguin R, Manda G, Butia M, Huibers M, Ozuah N, Tilly A, Stover AM, Basch E, Gopal S, Reeve BB, and Westmoreland KD
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- Child, Female, Follow-Up Studies, Humans, Malawi epidemiology, Male, Patient Reported Outcome Measures, Lymphoma diagnosis, Lymphoma epidemiology, Lymphoma therapy, Quality of Life
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Background: Patient-reportedoutcomes (PROs) that assess health-related quality of life (HRQoL) are increasingly important components of cancer care and research that are infrequently used in sub-Saharan Africa (SSA)., Methods: We administered the Chichewa Pediatric Patient-Reported Outcome Measurement Information System Pediatric (PROMIS)-25 at diagnosis, active treatment, and follow-up among pediatric lymphoma patients in Lilongwe, Malawi. Mean scores were calculated for the six PROMIS-25 HRQoL domains (Mobility, Anxiety, Depressive Symptoms, Fatigue, Peer Relationships, Pain Interference). Differences in HRQoL throughout treatment were compared using the minimally important difference (MID) and an ANOVA analysis. Kaplan-Meier survival estimates and Cox hazard ratios for mortality are reported., Results: Seventy-five children completed PROMIS-25 surveys at diagnosis, 35 (47%) during active treatment, and 24 (32%) at follow-up. The majority of patients died (n = 37, 49%) or were lost to follow-up (n = 6, 8%). Most (n = 51, 68%) were male, median age was 10 (interquartile range [IQR] 8-12), 48/73 (66%) presented with advanced stage III/IV, 61 (81%) were diagnosed with Burkitt lymphoma and 14 (19%) Hodgkin lymphoma. At diagnosis, HRQoL was poor across all domains, except for Peer Relationships. Improvements in HRQoL during active treatment and follow-up exceeded the MID. On exploratory analysis, fair-poor PROMIS Mobility <40 and severe Pain Intensity = 10 at diagnosis were associated with increased mortality risk and worse survival, but were not statistically significant., Conclusions: Pediatric lymphoma patients in Malawi present with poor HRQoL that improves throughout treatment and survivorship. Baseline PROMIS scores may provide important prognostic information. PROs offer an opportunity to include patient voices and prioritize holistic patient-centered care in low-resource settings., (© 2021 Wiley Periodicals LLC.)
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- 2021
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12. Caring for Children with Cancer in Africa during the COVID-19 Crisis: Implications and Opportunities.
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Slone JS, Ozuah N, and Wasswa P
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- Adolescent, Africa epidemiology, COVID-19, Child, Child, Preschool, Female, Humans, Infant, Infant, Newborn, Male, SARS-CoV-2, Betacoronavirus, Coronavirus Infections epidemiology, Coronavirus Infections therapy, Neoplasms epidemiology, Neoplasms therapy, Pandemics, Pneumonia, Viral epidemiology, Pneumonia, Viral therapy
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- 2020
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