Leukaemia survival rates improve but more needs to be done.

MORE effective therapies are needed for acute leukaemia, particularly for people over 50 years of age at diagnosis, according to research published today by the Medical Journal of Australia.

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Led by Dr Kerri Beckmann, a Research Fellow at the University of South Australia, the researchers analysed data from the South Australian Cancer Registry for all South Australian residents diagnosed with primary acute lymphoblastic leukaemia (ALL) or acute myeloid leukaemia (AML) during 1980‒2016. Their aim was to examine population changes in 5-year survival, by socio-demographic characteristics.

“Crude 5-year disease-specific survival was 58% for the 1035 people diagnosed with ALL during 1980–2016, and 18% for the 2814 people diagnosed with AML,” Beckmann and colleagues reported.


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“Survival improved steadily across the study period: from 44% for people with ALL diagnosed during 1980–1984 to 69% for those diagnosed during 2010‒2016; and from 9% to 23% for people diagnosed with AML.

“Disease-specific mortality increased with age.

“After adjusting for other factors, rates of change in risk of leukaemia-related death were greater for younger than older patients with ALL or AML, but were not significantly influenced by socio-economic status or remoteness.”

Beckmann and colleagues suggested several factors may have contributed to the sustained improvements in survival that they found.

“For ALL, intensive chemotherapy protocols for people changed little during the study period, but have been extended to older patients as management of toxicity and support services for infection and graft versus host disease improved,” they wrote.

“For people with AML, the major change to treatment protocols has been the introduction of high dose cytarabine therapy and the addition of all-trans retinoic acid (tretinoin) and arsenic trioxide for treating some forms.

“Supportive measures for managing fungal infections, febrile neutropenia, and graft versus host disease have improved. The use of allogeneic stem cell transplantation has increased since the early 2000s, and at the Royal Adelaide Hospital eligibility was extended from 65 to 70 years of age in 2010. These factors may have contributed to improved survival since 2000.”

Despite the improvements over the study period, Beckmann and colleagues wrote that “disease-specific survival of older patients with acute leukaemia remains disappointingly low, particularly for people with AML”.

“Further research, including clinical trials of new therapies tolerated by older patients, is vital to improving outcomes.”

IMAGE CREDIT: University of South Australia, Royal Adelaide Hospital


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