Response and Survival Estimates of Patients With Plasma Cell Myeloma in a Resource-Constrained Setting Using Protocols From High-Income Countries: A Single-Center Experience From Sri Lanka.

Autor:	Hewamana S; Clinical Haematology Unit, Lanka Hospitals, Colombo, Sri Lanka.; Asiri Surgical Hospital, Colombo, Sri Lanka., Gunasena P; Lanka Hospitals, Colombo, Sri Lanka., Jayasinghe C; University of Sri Jayewardenepura, Colombo, Sri Lanka., Skandarajah T; National Cancer Institute, Colombo, Sri Lanka., Harischandra M; Lanka Hospitals, Colombo, Sri Lanka., Abeyaratne S; Lanka Hospitals, Colombo, Sri Lanka., Ekanayake L; Lanka Hospitals, Colombo, Sri Lanka., Somasundaram G; Lanka Hospitals, Colombo, Sri Lanka., Somiah S; Lanka Hospitals, Colombo, Sri Lanka., Srinivasan V; Lanka Hospitals, Colombo, Sri Lanka., Arseculeratne G; Lanka Hospitals, Colombo, Sri Lanka., Perera N; Lanka Hospitals, Colombo, Sri Lanka., Fernando J; Lanka Hospitals, Colombo, Sri Lanka., Faiz M; Lanka Hospitals, Colombo, Sri Lanka., Munasinghe N; Lanka Hospitals, Colombo, Sri Lanka., Mowlana A; Lanka Hospital Diagnostics, Colombo, Sri Lanka., Deshapriya S; Clinical Haematology Unit, Lanka Hospitals, Colombo, Sri Lanka., Mawathakubura S; Clinical Haematology Unit, Lanka Hospitals, Colombo, Sri Lanka., Wickramarathna C; Faculty of Medicine, University of Ruhuna, Matara, Sri Lanka., Wijewickrama A; National Institute of Infectious Diseases, Angoda, Sri Lanka., Jayawardena P; National Hospital of Sri Lanka, Colombo, Sri Lanka., Perera E; Asiri Surgical Hospital, Colombo, Sri Lanka., Peiris N; Asiri Surgical Hospital, Colombo, Sri Lanka., Paranawithane S; Lanka Hospitals, Colombo, Sri Lanka., Perera C; Durdens Hospital, Colombo, Sri Lanka., Kariyawasam C; Sri Jayewardenepura General Hospital, Colombo, Sri Lanka., Munasinghe S; Military Hospital, Colombo, Sri Lanka., De Silva C; Faculty of Medicine, University of Colombo, Colombo, Sri Lanka., Wadanamby R; Lanka Hospital Diagnostics, Colombo, Sri Lanka., Galagoda G; Lanka Hospital Diagnostics, Colombo, Sri Lanka., Lin TT; Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom., Wijesiriwardena B; Lanka Hospitals, Colombo, Sri Lanka., Balawardena J; General Sir John Kotelawala Defence University, Werahera, Colombo, Sri Lanka.
Jazyk:	angličtina
Zdroj:	JCO global oncology [JCO Glob Oncol] 2022 Jun; Vol. 8, pp. e2100352.
DOI:	10.1200/GO.21.00352
Abstrakt:	Purpose: There is a significant disparity in global cancer care and outcome between countries. Progress in the treatment of symptomatic plasma cell myeloma (PCM) in high-income countries is not seen in low- and middle-income countries. Materials and Methods: This is was a retrospective cohort study of all patients diagnosed with PCM between May 1, 2013, and September 30, 2021, at the first hemato-oncology center in Sri Lanka. We aimed to provide data on clinicopathologic characteristics, response, and survival estimates. Results: A total of 79 patients with PCM received first-line therapy during the study period. The median age was 64 years, and approximately one third (33%) of patients were older than 70 years. There were 42 (53%) males and 37 females. Hypercalcemia, renal impairment, anemia, and bone disease were detected in 36.7%, 38%, 72.1%, and 81%, respectively. Thirty-nine, 34, and six patients received a combination of cyclophosphamide, thalidomide, and dexamethasone; bortezomib, thalidomide, and dexamethasone; and other treatments, respectively. The overall response rate (≥ partial response) was approximately 97% for both cyclophosphamide, thalidomide, and dexamethasone and bortezomib, thalidomide, and dexamethasone. Twenty-three (29%) of these patients died during the study period, but only 14 (18%) died due to PCM or associated sepsis. After a median follow-up of 40.6 months (range, 35.2-59.07 months), the median overall survival was 84.2 months (95% CI, 60.87 to not available). The 5-year estimated overall survival was 65%. Conclusion: To our knowledge, this is the only well-characterized study on long-term survival of patients with PCM in Sri Lanka. We have shown that it is possible to successfully apply Western treatment and supportive care protocols to the local population. These published data will help to benchmark and improve the treatment and develop blood cancer care in the local setting.
Databáze:	MEDLINE
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