Dr. Deogratias Ruhangaza
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Browsing Dr. Deogratias Ruhangaza by Author "Alan Paciorek"
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Publication A Ten-Year Experience of Treating Chronic Myeloid Leukemia in Rural Rwanda: Outcomes and Insights for a Changing Landscape(American Society of Clinical Oncology (ASCO), 2022-07) ;Jennifer Morgan ;Rebecca J. DeBoer ;Jean Bosco Bigirimana ;Cam Nguyen ;Deogratias Ruhangaza ;Alan Paciorek ;Fred Mugabo ;Chandler Villaverde ;Nicaise Nsabimana ;Pascal Bihizimana ;Aline Umwizerwa ;Leslie E. Lehmann ;Lawrence N. ShulmanCyprien ShyiramberePURPOSE In describing our ten-year experience with treating chronic myeloid leukemia (CML) as part of the Glivec Patient Assistance Program (GIPAP) in rural Rwanda, we evaluate (1) patient characteristics and treatment outcomes, (2) resource-adapted management strategies, and (3) the impact of diagnostic capacity development. METHODS We retrospectively reviewed all patients with BCR-ABL–positive CML enrolled in this GIPAP program between 2009 and 2018. Clinical data were analyzed using descriptive statistics, Kaplan-Meier methods, proportional hazards regression, and the Kruskal-Wallis test. RESULTS One hundred twenty-four patients were included. The median age at diagnosis was 34 (range 8-81) years. On imatinib, 91% achieved complete hematologic response (CHR) after a median of 49 days. Seven (6%) and 12 (11%) patients had primary and secondary imatinib resistance, respectively. The 3-year overall survival was 80% (95% CI, 72 to 87) for the cohort, with superior survival in imatinib responders compared with those with primary and secondary resistance. The median time from imatinib initiation to CHR was 59 versus 38 days ( P = .040) before and after in-country diagnostic testing, whereas the median time to diagnosis ( P = .056) and imatinib initiation ( P = .170) was not significantly different. CONCLUSION Coupling molecular diagnostics with affordable access to imatinib within a comprehensive cancer care delivery program is a successful long-term strategy to treat CML in resource-constrained settings. Our patients are younger and have higher rates of imatinib resistance compared with historic cohorts in high-income countries. High imatinib resistance rates highlight the need for access to molecular monitoring, resistance testing, and second-generation tyrosine kinase inhibitors, as well as systems to support drug adherence. Hematologic response is an accurate resource-adapted predictor of survival in this setting. Local diagnostic capacity development has allowed for continuous, timely CML care delivery in Rwanda. - Some of the metrics are blocked by yourconsent settings
Publication Cervical cancer treatment in Rwanda: Resource-driven adaptations, quality indicators, and patient outcomes(Elsevier BV, 2022-02) ;Rebecca J. DeBoer ;Victoria Umutoni ;Lisa Bazzett-Matabele ;Ethan Katznelson ;Cam Nguyen ;Aline Umwizerwa ;Jean Bosco Bigirimana ;Alan Paciorek ;Nicaise Nsabimana ;Deogratias Ruhangaza ;Diomede Ntasumbumuyange ;Lawrence N. Shulman ;Scott A. TriedmanCyprien ShyirambereObjective: Most cervical cancer cases and deaths occur in low- and middle-income countries, yet clinical research from these contexts is significantly underrepresented. We aimed to describe the treatment quality, resource-driven adaptations, and outcomes of cervical cancer patients in Rwanda. Methods: A retrospective cohort study was conducted of all patients with newly diagnosed cervical cancer enrolled between April 2016 and June 2018. Data were abstracted from medical records and analyzed using descriptive statistics, Kaplan Meier methods, and Cox proportional hazards regression. Results: A total of 379 patients were included; median age 54 years, 21% HIV-infected. A majority (55%) had stage III or IV disease. Thirty-four early-stage patients underwent radical hysterectomy. Of 254 patients added to a waiting list for chemoradiation, 114 ultimately received chemoradiation. Of these, 30 (26%) received upfront chemoradiation after median 126 days from diagnosis, and 83 (73%) received carboplatin/paclitaxel while waiting, with a median 56 days from diagnosis to chemotherapy and 207 days to chemoradiation. There was no survival difference between the upfront chemoradiation and prior chemotherapy subgroups. Most chemotherapy recipients (77%) reported improvement in symptoms. Three-year event-free survival was 90% with radical hysterectomy (95% CI 72–97%), 66% with chemoradiation (95% CI 55–75%), and 12% with chemotherapy only (95% CI 6–20%). Conclusions: Multi-modality treatment of cervical cancer is effective in low resource settings through coordinated care and pragmatic approaches. Our data support a role for temporizing chemotherapy if delays to chemoradiation are anticipated. Sustainable access to gynecologic oncology surgery and expanded access to radiotherapy are urgently needed. Keywords: Cervical cancer,Sub-Saharan Africa,Health equity, Access to health care, Quality indicators,Treatment outcome