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A Cancer Patient's Remarkable Response to Antimalarial Drug Treatment

by Sushma Rao on May 23, 2018 at 3:20 PM
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A Cancer Patient's Remarkable Response to Antimalarial Drug Treatment

An ovarian cancer patient's exceptionable journey to recovery could be attributed an antimalarial drug treatment she received for an autoimmune disease, according to a case report. The report which discusses in detail the patient's remarkable recovery and response to treatment was published in ecancermedicalscience.

Researchers led by Dr Franco Muggia, Professor of Medicine at NYU Langone's Perlmutter Cancer Center, New York, USA, describe a case of a patient who received treatment for dermatomyositis, an autoimmune condition that causes muscle weakness and skin rashes. For this condition, she received treatment that included hydroxychloroquine and quinacrine, which are more commonly known as antimalarial drugs.

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But the patient later presented with an advanced and aggressive form of ovarian cancer. Although effective treatments exist, this type of cancer is usually expected to recur within a median of 18 months to 2 years.

Dr Muggia's patient surprised her doctors with her immediate and lasting response to the cancer treatment.

Three years on, the patient continues to be disease-free - both from ovarian cancer and dermatomyositis. Follow-up has shown no signs of cancer, and the patient is reportedly symptom-free.
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Previously published evidence in ecancermedicalscience has shown that antimalarial drugs hydroxychloroquine and quinacrine may play a role in cancer treatment, as they appear to work together with cancer drugs, making treatments more effective.

The medical community is becoming increasingly interested in "repurposed" drugs, or drugs that were originally developed for one condition, then found to be useful for other conditions.

"This is an interesting example of serendipity - an incidental finding of a cancer patient responding strongly to a non-cancer drug used for the treatment of a co-morbid condition," says Dr Pan Pantziarka of The Anticancer Fund, Belgium, and one of the leaders of the Repurposing Drugs in Oncology (ReDO) Project. "It's important to publish such cases as they may provide early data for later preclinical and clinical investigation."

Dr Muggia stresses that conclusions cannot be drawn from the example of one patient. "However, the depth of the response of an aggressive high-grade serous ovarian cancer to the initial platinum-taxane doublet, after months of dermatomyositis and treatment with anti-malarial drugs, should encourage further inquiries into the role of autophagy, its subsequent inhibition, and immunity in enhancing responses to [platinum-based] chemotherapy."

Dr Pantziarka says, "There is already strong evidence that anti-malarials such as hydroxychloroquine and chloroquine possess anticancer activity, as was summarised by the ReDO Project last year. If replicated, it would show yet again the therapeutic value still to be realised in so many of our existing non-cancer medicines."

Dr Muggia adds, "Much remains to be learned about ovarian cancer biology and autophagy. We hope the current report catalyzes additional work in this area."

At the time of publication, Dr Muggia's patient remained disease-free.



Source: Eurekalert
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