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Home NEWS Science News Cancer

Studies find combination chemotherapy beneficial and cost-effective in sub-Saharan Africa

Bioengineer by Bioengineer
July 22, 2021
in Cancer
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Credit: UNC School of Medicine

CHAPEL HILL, North Carolina–Researchers at the UNC Lineberger Comprehensive Cancer Center demonstrated in a clinical trial in Malawi that a five-drug combination chemotherapy provided curative benefit compared to current standard-of care-therapy in people diagnosed with lymphoma, and now they have determined this option is also cost-effective. The economic finding appeared July 22, 2021, in Lancet Global Health.

The clinical trial results, reported May 19, 2021, in Lancet Global Health involved 37 people with diffuse large B-cell lymphoma (DLBCL). The majority of patients were also HIV-positive, which greatly increased their risk of DLBCL; all HIV-positive patients were treated with anti-viral drugs. The trial participants received a standard four-drug chemotherapy combination known as CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone) along with rituximab, an antibody therapy. After two years of follow-up, 55 percent of the patients were still alive, an outcome that is higher than CHOP alone based on earlier studies.

With the trial results in hand, the researchers wanted to know if either CHOP or CHOP plus rituximab were cost-effective treatments in a resource-limited setting. Demographically, Malawi is a sub-Saharan country in Africa with roughly 19 million residents. The healthcare resources available in the 2017-2018 government budget for Malawi were $170 million dollars (about $9 per person); external donors contribute approximately another $350 million annually to health expenditures.

UNC Lineberger’s Matthew Painschab, MD, lead author of the economic analysis and co-lead author of the treatment efficacy study, said cost-effectiveness analyses allow comparisons across diverse diseases so that limited resources can be optimally allocated.

“Without such analyses, relatively expensive upfront costs for cancer medicines will often seem prohibitively costly for a relatively small number of patients compared to other available public health interventions,” said Painschab, assistant professor in the Division of Hematology at UNC School of Medicine and a member of UNC-Project Malawi. “We demonstrated that an upfront, time-limited expense followed by decades of healthy life may be a prudent investment, relative to other accepted interventions such as daily, lifelong antiretroviral treatment for HIV.”

On a per-patient basis, comparing supportive care (no chemotherapy) to chemotherapy with CHOP, chemotherapy prevented more than seven disability-adjusted life years (DALYs) at a cost of $193 per DALY prevented. One DALY is a year of life lived in perfect health and therefore losses represent both years lost from dying early as well as quality life-years lost to disability. Adding rituximab to CHOP prevented about three DALYs at a cost of $1,145 per DALY.

“Our analysis has important implications for saving lives,” said Painschab. “Though precise estimates of cancer incidence are lacking, we estimate it would cost about one million dollars annually to treat all cases of DLBCL in Malawi with CHOP, saving an estimated 252 lives. For two million dollars more annually, we could add rituximab, which costs about $500 a dose in Malawi, and the five-drug regimen could save an additional 100 lives.”

In addition to the recently published studies, the researchers are conducting some of the first molecular profiling studies for HIV-associated lymphoma in the world. They hope that greater biologic understanding of DLBCL in Malawi may lead to more targeted, safe and effective treatment strategies. They note there is still much work to be done in this area, both in the U.S. and Malawi.

“Proving that treating DLBCL in Malawi can be cost-effective was not necessarily intuitive, as upfront costs of treating cancer patients often seem daunting for countries facing many competing health priorities,” noted Stephen Kimani, MD, a fellow in Hematology/Oncology at UNC-Chapel Hill and research fellow at UNC Project Malawi and first author of the study that found the combination therapy was effective. “Investments in high-quality, potentially curative cancer care may be very prudent when short-term costs result in a normal life expectancy thereafter. These sorts of demonstrations will hopefully spur a treatment access movement for cancer that is analogous to what has occurred for HIV.”

###

Authors and disclosures

Cost-effectiveness research

In addition to Painschab, the paper’s other authors are Stephanie Wheeler, PhD, UNC Lineberger and UNC Gillings School of Global Public Health; Wilberforce Mhango, Bongani Kaimila, MBBS, MSc, Takondwa Zuze, MBBS, Victor Mithi, MBBS, Edwards Kasonkanji, MPH and Noel Mumba, UNC Project Malawi, Lilongwe; Racquel E Kohler, PhD, Rutgers Cancer Institute of New Jersey, New Brunswick; Richard Nyasosela, MBBS, Kamuzu Central Hospital, Lilongwe, Malawi; and Satish Gopal, MD, formerly of the Center for Global Health, National Cancer Institute, Bethesda, MD.

The research was supported by NIH grants K01TW011470, U54CA190152, D43TW009340, UM1CA121947, P30CA233709, R25CA057711 and T32CA11633911.

Efficacy of treatment research

In addition to Kimani and Painschab, the paper’s other authors are Bongani Kaimila, MBBS, UNC Project Malawi and University of Malawi College of Medicine; Tamiwe Tomoka, MMed, UNC Project Malawi, University of Malawi College of Medicine and UNC School of Medicine; Edwards Kasonkanji, Takondwa Zuze, MBBS, Maria Chikasema, Asekanadziwa Mtangwanika, Mena Chawinga, Wilberforce Mhango, Simon Nicholas, Fred Chimzimu, Coxcilly Kampani, Robert Krysiak, MS, Ryan Seguin, MPH, UNC Project Malawi, Lilongwe; Maurice Mulenga, MMed, Richard Nyasoselam, MMed, Malawi Ministry of Health; Amy Lilly,MD, UNC School of Medicine; Cara Randall, MD, West Virginia University; Katherine D. Westmoreland, MD, UNC Project-Malawi and UNC Lineberger; Nathan D. Montgomery, MD, Yuri Fedoriw, MD, UNC Project-Malawi and UNC School of Medicine; and Satish Gopal, MD, Center for Global Health, National Cancer Institute.

The research was funded in part by a UNC Lineberger Developmental Research Award and NIH grants D43TW009340, K01TW011470 and UM1CA121947.

Media Contact
Bill Schaller
[email protected]

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